The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis
Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Loli...
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| Autor*in: |
CARVER, T. L. W. [verfasserIn] THOMAS, B. J. [verfasserIn] INGERSON-MORRIS, S. M. [verfasserIn] |
|---|
| Format: |
E-Artikel |
|---|
| Erschienen: |
Oxford, UK: Blackwell Publishing Ltd ; 1990 |
|---|
| Umfang: |
Online-Ressource |
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| Reproduktion: |
2007 ; Blackwell Publishing Journal Backfiles 1879-2005 |
|---|---|
| Übergeordnetes Werk: |
In: Plant pathology - Oxford [u.a.] : Wiley-Blackwell, 1952, 39(1990), 4, Seite 0 |
| Übergeordnetes Werk: |
volume:39 ; year:1990 ; number:4 ; pages:0 |
| Links: |
|---|
| DOI / URN: |
10.1111/j.1365-3059.1990.tb02536.x |
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| 245 | 1 | 0 | |a The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis |
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| 520 | |a Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. | ||
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10.1111/j.1365-3059.1990.tb02536.x doi (DE-627)NLEJ241032067 DE-627 ger DE-627 rakwb CARVER, T. L. W. verfasserin aut The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis Oxford, UK Blackwell Publishing Ltd 1990 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| THOMAS, B. J. verfasserin aut INGERSON-MORRIS, S. M. verfasserin aut RODERICK, H.W. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 39(1990), 4, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:39 year:1990 number:4 pages:0 http://dx.doi.org/10.1111/j.1365-3059.1990.tb02536.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 39 1990 4 0 |
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10.1111/j.1365-3059.1990.tb02536.x doi (DE-627)NLEJ241032067 DE-627 ger DE-627 rakwb CARVER, T. L. W. verfasserin aut The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis Oxford, UK Blackwell Publishing Ltd 1990 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| THOMAS, B. J. verfasserin aut INGERSON-MORRIS, S. M. verfasserin aut RODERICK, H.W. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 39(1990), 4, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:39 year:1990 number:4 pages:0 http://dx.doi.org/10.1111/j.1365-3059.1990.tb02536.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 39 1990 4 0 |
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10.1111/j.1365-3059.1990.tb02536.x doi (DE-627)NLEJ241032067 DE-627 ger DE-627 rakwb CARVER, T. L. W. verfasserin aut The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis Oxford, UK Blackwell Publishing Ltd 1990 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| THOMAS, B. J. verfasserin aut INGERSON-MORRIS, S. M. verfasserin aut RODERICK, H.W. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 39(1990), 4, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:39 year:1990 number:4 pages:0 http://dx.doi.org/10.1111/j.1365-3059.1990.tb02536.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 39 1990 4 0 |
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10.1111/j.1365-3059.1990.tb02536.x doi (DE-627)NLEJ241032067 DE-627 ger DE-627 rakwb CARVER, T. L. W. verfasserin aut The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis Oxford, UK Blackwell Publishing Ltd 1990 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| THOMAS, B. J. verfasserin aut INGERSON-MORRIS, S. M. verfasserin aut RODERICK, H.W. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 39(1990), 4, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:39 year:1990 number:4 pages:0 http://dx.doi.org/10.1111/j.1365-3059.1990.tb02536.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 39 1990 4 0 |
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10.1111/j.1365-3059.1990.tb02536.x doi (DE-627)NLEJ241032067 DE-627 ger DE-627 rakwb CARVER, T. L. W. verfasserin aut The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis Oxford, UK Blackwell Publishing Ltd 1990 Online-Ressource nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. 2007 Blackwell Publishing Journal Backfiles 1879-2005 |2007|||||||||| THOMAS, B. J. verfasserin aut INGERSON-MORRIS, S. M. verfasserin aut RODERICK, H.W. oth In Plant pathology Oxford [u.a.] : Wiley-Blackwell, 1952 39(1990), 4, Seite 0 Online-Ressource (DE-627)NLEJ243927657 (DE-600)2020845-5 1365-3059 nnns volume:39 year:1990 number:4 pages:0 http://dx.doi.org/10.1111/j.1365-3059.1990.tb02536.x text/html Verlag Deutschlandweit zugänglich Volltext GBV_USEFLAG_U ZDB-1-DJB GBV_NL_ARTICLE AR 39 1990 4 0 |
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The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis |
| abstract |
Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. |
| abstractGer |
Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. |
| abstract_unstemmed |
Field and glasshouse observations of Lolium spp. grasses indicated that the lower, abaxial, leaf surface was rarely infected by powdery mildew (Erysiphe graminis) even when the upper, adaxial, surface was densely colonized. Experiments showed that conidia of two strains of E. graminis, one from Lolium and one from Avena, germinated equally well on both surfaces of Lolium and Avena leaves, but that the subsequent growth and development of germlings was impaired on the lower surface of Lolium leaves, so that most formed only multiple short germ tubes or an abnormal long tube, and only c. 25% or fewer formed infection structures. This contributes to the apparent resistance of the lower Lolium leaf surface to powdery mildew and may help to explain why the disease is relatively unimportant in UK ryegrass crops, since infection structures develop at a high frequency on only 50% of the leaf area, i.e. the upper surface. Scanning electron microscopy showed that the epicuticular waxes on the lower Lolium leaf surface form amorphous sheets. This contrasts with the crystalline plate waxes seen on the upper surface of Lolium leaves and on both surfaces of oat leaves. However, when the lower Lolium leaf surface was washed with chloroform to remove epicuticular wax, normal germling and infection structure development was obtained on the wax-free surface. This suggests that the sheet waxes prevent the pathogen gaining access to features of the cuticular membrane which trigger normal germling development. |
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| title_short |
The role of the abaxial leaf surface waxes of Lolium spp. in resistance to Erysiphe graminis |
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http://dx.doi.org/10.1111/j.1365-3059.1990.tb02536.x |
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THOMAS, B. J. INGERSON-MORRIS, S. M. RODERICK, H.W. |
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THOMAS, B. J. INGERSON-MORRIS, S. M. RODERICK, H.W. |
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10.1111/j.1365-3059.1990.tb02536.x |
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2024-07-05T21:37:47.393Z |
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