Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic>
Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by comb...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Dias, Carla Silva [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2018transfer abstract |
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| Schlagwörter: |
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| Umfang: |
10 |
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| Übergeordnetes Werk: |
Enthalten in: Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations - Wang, Zhaoyang ELSEVIER, 2021, PPB : an official journal of the Federation of European Societies of Plant Physiology, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:127 ; year:2018 ; pages:119-128 ; extent:10 |
| Links: |
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| DOI / URN: |
10.1016/j.plaphy.2018.03.016 |
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| 245 | 1 | 0 | |a Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> |
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| 520 | |a Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. | ||
| 520 | |a Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. | ||
| 650 | 7 | |a Hemibiotrophic fungus |2 Elsevier | |
| 650 | 7 | |a Fungal disease |2 Elsevier | |
| 650 | 7 | |a Anthracnose |2 Elsevier | |
| 650 | 7 | |a Photosynthesis |2 Elsevier | |
| 700 | 1 | |a Araujo, Leonardo |4 oth | |
| 700 | 1 | |a Alves Chaves, Joicy Aparecida |4 oth | |
| 700 | 1 | |a DaMatta, Fábio M. |4 oth | |
| 700 | 1 | |a Rodrigues, Fabrício A. |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a Wang, Zhaoyang ELSEVIER |t Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations |d 2021 |d PPB : an official journal of the Federation of European Societies of Plant Physiology |g Amsterdam [u.a.] |w (DE-627)ELV006529712 |
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10.1016/j.plaphy.2018.03.016 doi GBV00000000000446.pica (DE-627)ELV043111688 (ELSEVIER)S0981-9428(18)30139-6 DE-627 ger DE-627 rakwb eng 690 620 VZ 50.03 bkl Dias, Carla Silva verfasserin aut Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> 2018transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Hemibiotrophic fungus Elsevier Fungal disease Elsevier Anthracnose Elsevier Photosynthesis Elsevier Araujo, Leonardo oth Alves Chaves, Joicy Aparecida oth DaMatta, Fábio M. oth Rodrigues, Fabrício A. oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:127 year:2018 pages:119-128 extent:10 https://doi.org/10.1016/j.plaphy.2018.03.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 127 2018 119-128 10 |
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10.1016/j.plaphy.2018.03.016 doi GBV00000000000446.pica (DE-627)ELV043111688 (ELSEVIER)S0981-9428(18)30139-6 DE-627 ger DE-627 rakwb eng 690 620 VZ 50.03 bkl Dias, Carla Silva verfasserin aut Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> 2018transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Hemibiotrophic fungus Elsevier Fungal disease Elsevier Anthracnose Elsevier Photosynthesis Elsevier Araujo, Leonardo oth Alves Chaves, Joicy Aparecida oth DaMatta, Fábio M. oth Rodrigues, Fabrício A. oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:127 year:2018 pages:119-128 extent:10 https://doi.org/10.1016/j.plaphy.2018.03.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 127 2018 119-128 10 |
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10.1016/j.plaphy.2018.03.016 doi GBV00000000000446.pica (DE-627)ELV043111688 (ELSEVIER)S0981-9428(18)30139-6 DE-627 ger DE-627 rakwb eng 690 620 VZ 50.03 bkl Dias, Carla Silva verfasserin aut Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> 2018transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Hemibiotrophic fungus Elsevier Fungal disease Elsevier Anthracnose Elsevier Photosynthesis Elsevier Araujo, Leonardo oth Alves Chaves, Joicy Aparecida oth DaMatta, Fábio M. oth Rodrigues, Fabrício A. oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:127 year:2018 pages:119-128 extent:10 https://doi.org/10.1016/j.plaphy.2018.03.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 127 2018 119-128 10 |
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10.1016/j.plaphy.2018.03.016 doi GBV00000000000446.pica (DE-627)ELV043111688 (ELSEVIER)S0981-9428(18)30139-6 DE-627 ger DE-627 rakwb eng 690 620 VZ 50.03 bkl Dias, Carla Silva verfasserin aut Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> 2018transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Hemibiotrophic fungus Elsevier Fungal disease Elsevier Anthracnose Elsevier Photosynthesis Elsevier Araujo, Leonardo oth Alves Chaves, Joicy Aparecida oth DaMatta, Fábio M. oth Rodrigues, Fabrício A. oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:127 year:2018 pages:119-128 extent:10 https://doi.org/10.1016/j.plaphy.2018.03.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 127 2018 119-128 10 |
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10.1016/j.plaphy.2018.03.016 doi GBV00000000000446.pica (DE-627)ELV043111688 (ELSEVIER)S0981-9428(18)30139-6 DE-627 ger DE-627 rakwb eng 690 620 VZ 50.03 bkl Dias, Carla Silva verfasserin aut Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> 2018transfer abstract 10 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. Hemibiotrophic fungus Elsevier Fungal disease Elsevier Anthracnose Elsevier Photosynthesis Elsevier Araujo, Leonardo oth Alves Chaves, Joicy Aparecida oth DaMatta, Fábio M. oth Rodrigues, Fabrício A. oth Enthalten in Elsevier Science Wang, Zhaoyang ELSEVIER Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations 2021 PPB : an official journal of the Federation of European Societies of Plant Physiology Amsterdam [u.a.] (DE-627)ELV006529712 volume:127 year:2018 pages:119-128 extent:10 https://doi.org/10.1016/j.plaphy.2018.03.016 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 50.03 Methoden und Techniken der Ingenieurwissenschaften VZ AR 127 2018 119-128 10 |
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Enthalten in Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations Amsterdam [u.a.] volume:127 year:2018 pages:119-128 extent:10 |
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Enthalten in Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations Amsterdam [u.a.] volume:127 year:2018 pages:119-128 extent:10 |
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Generalized finite difference method with irregular mesh for a class of three-dimensional variable-order time-fractional advection-diffusion equations |
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Dias, Carla Silva @@aut@@ Araujo, Leonardo @@oth@@ Alves Chaves, Joicy Aparecida @@oth@@ DaMatta, Fábio M. @@oth@@ Rodrigues, Fabrício A. @@oth@@ |
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water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>colletotrichum truncatum</ce:italic> |
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Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> |
| abstract |
Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. |
| abstractGer |
Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. |
| abstract_unstemmed |
Considering the potential of anthracnose to decrease soybean yield and the need to gain more information regarding its effect on soybean physiology, the present study performed an in-depth analysis of the photosynthetic performance of soybean leaflets challenged with Colletotrichum truncatum by combining chlorophyll a fluorescence images with gas-exchange measurements and photosynthetic pigment pools. There were no significant differences between non-inoculated and inoculated plants in leaf water potential, apparent hydraulic conductance, net CO2 assimilation rate, stomatal conductance to water vapor and transpiration rate. For internal CO2 concentration, significant difference between non-inoculated and inoculated plants occurred only at 36 h after inoculation. Reductions in the values of the chlorophyll a fluorescence parameters [initial fluorescence (F 0), maximal fluorescence (F m), maximal photosystem II quantum yield (F v/F m), quantum yield of regulated energy dissipation (Y(NPQ))] and increases in effective PS II quantum yield (Y(II)), quantum yield of non-regulated energy dissipation Y(NO) and photochemical quenching coefficient (q P) were noticed on the necrotic vein tissue in contrast to the surrounding leaf tissue. It appears that the impact of the infection by C. truncatum on the photosynthetic performance of the leaflets was minimal considering the preference of the fungus to colonize the veins. |
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Water relation, leaf gas exchange and chlorophyll <ce:italic>a</ce:italic> fluorescence imaging of soybean leaves infected with <ce:italic>Colletotrichum truncatum</ce:italic> |
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