PR-13/Thionin But Not PR-1 Mediates Bacterial Resistance in Nicotiana attenuata in Nature, and Neither Influences Herbivore Resistance
Increases in pathogenesis-related (PR) transcripts are commonly interpreted as evidence of plants' resistance responses to pathogens; however, few studies have examined whether increases in PR proteins protect plants growing under natural conditions. Pseudomonas syringae pv. tomato DC3000, whic...
Ausführliche Beschreibung
Autor*in: |
Cbgowda Rayapuram [verfasserIn] Jianqiang Wu [verfasserIn] Christiane Haas [verfasserIn] Ian T. Baldwin [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2008 |
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Übergeordnetes Werk: |
In: Molecular Plant-Microbe Interactions - The American Phytopathological Society, 2021, 21(2008), 7, Seite 988-1000 |
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Übergeordnetes Werk: |
volume:21 ; year:2008 ; number:7 ; pages:988-1000 |
Links: |
Link aufrufen |
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DOI / URN: |
10.1094/MPMI-21-7-0988 |
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Katalog-ID: |
DOAJ077856589 |
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520 | |a Increases in pathogenesis-related (PR) transcripts are commonly interpreted as evidence of plants' resistance responses to pathogens; however, few studies have examined whether increases in PR proteins protect plants growing under natural conditions. Pseudomonas syringae pv. tomato DC3000, which is virulent and causes disease in Arabidopsis, is also pathogenic to the native tobacco Nicotiana attenuata. N. attenuata responds to P. syringae pv. tomato DC3000's challenges with increases in salicylic acid and transcripts of at least two PR genes, PR-1 and PR13/Thionin. To determine if either of these PR proteins functions in bacterial resistance, we independently silenced both genes by RNAi and found that only PR-13/Thionin mediates resistance to P. syringae pv. tomato DC3000 in glasshouse experiments. When NaPR-1- and NaThionin-silenced plants were transplanted into the plant's native habitat in the Great Basin Desert of Utah, opportunistic Pseudomonas spp. performed better on NaThionin-silenced plants compared with NaPR-1-silenced and wild-type (WT) plants, and accounted for increased plant mortality. The native herbivore community of N. attenuata attacked both NaPR-1- and PR-13/NaThionin-silenced plants to the same degree as it did in WT plants, indicating that neither PR protein provides resistance to herbivores. Although PR-1 is generally considered a marker gene of disease resistance, we found no evidence that it has an antimicrobial function. In contrast, PR-13/NaThionin is clearly an ecologically relevant defense protein involved in resisting pathogens in N. attenuata. | ||
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10.1094/MPMI-21-7-0988 doi (DE-627)DOAJ077856589 (DE-599)DOAJ579e8d8acdcc4c6287caba9182e2cd88 DE-627 ger DE-627 rakwb eng QR1-502 QK1-989 Cbgowda Rayapuram verfasserin aut PR-13/Thionin But Not PR-1 Mediates Bacterial Resistance in Nicotiana attenuata in Nature, and Neither Influences Herbivore Resistance 2008 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Increases in pathogenesis-related (PR) transcripts are commonly interpreted as evidence of plants' resistance responses to pathogens; however, few studies have examined whether increases in PR proteins protect plants growing under natural conditions. Pseudomonas syringae pv. tomato DC3000, which is virulent and causes disease in Arabidopsis, is also pathogenic to the native tobacco Nicotiana attenuata. N. attenuata responds to P. syringae pv. tomato DC3000's challenges with increases in salicylic acid and transcripts of at least two PR genes, PR-1 and PR13/Thionin. To determine if either of these PR proteins functions in bacterial resistance, we independently silenced both genes by RNAi and found that only PR-13/Thionin mediates resistance to P. syringae pv. tomato DC3000 in glasshouse experiments. When NaPR-1- and NaThionin-silenced plants were transplanted into the plant's native habitat in the Great Basin Desert of Utah, opportunistic Pseudomonas spp. performed better on NaThionin-silenced plants compared with NaPR-1-silenced and wild-type (WT) plants, and accounted for increased plant mortality. The native herbivore community of N. attenuata attacked both NaPR-1- and PR-13/NaThionin-silenced plants to the same degree as it did in WT plants, indicating that neither PR protein provides resistance to herbivores. Although PR-1 is generally considered a marker gene of disease resistance, we found no evidence that it has an antimicrobial function. In contrast, PR-13/NaThionin is clearly an ecologically relevant defense protein involved in resisting pathogens in N. attenuata. Microbiology Botany Jianqiang Wu verfasserin aut Christiane Haas verfasserin aut Ian T. Baldwin verfasserin aut In Molecular Plant-Microbe Interactions The American Phytopathological Society, 2021 21(2008), 7, Seite 988-1000 (DE-627)325568367 (DE-600)2037108-1 19437706 nnns volume:21 year:2008 number:7 pages:988-1000 https://doi.org/10.1094/MPMI-21-7-0988 kostenfrei https://doaj.org/article/579e8d8acdcc4c6287caba9182e2cd88 kostenfrei https://apsjournals.apsnet.org/doi/10.1094/MPMI-21-7-0988 kostenfrei https://doaj.org/toc/0894-0282 Journal toc kostenfrei https://doaj.org/toc/1943-7706 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_602 GBV_ILN_2007 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4367 GBV_ILN_4700 AR 21 2008 7 988-1000 |
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PR-13/Thionin But Not PR-1 Mediates Bacterial Resistance in Nicotiana attenuata in Nature, and Neither Influences Herbivore Resistance |
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Increases in pathogenesis-related (PR) transcripts are commonly interpreted as evidence of plants' resistance responses to pathogens; however, few studies have examined whether increases in PR proteins protect plants growing under natural conditions. Pseudomonas syringae pv. tomato DC3000, which is virulent and causes disease in Arabidopsis, is also pathogenic to the native tobacco Nicotiana attenuata. N. attenuata responds to P. syringae pv. tomato DC3000's challenges with increases in salicylic acid and transcripts of at least two PR genes, PR-1 and PR13/Thionin. To determine if either of these PR proteins functions in bacterial resistance, we independently silenced both genes by RNAi and found that only PR-13/Thionin mediates resistance to P. syringae pv. tomato DC3000 in glasshouse experiments. When NaPR-1- and NaThionin-silenced plants were transplanted into the plant's native habitat in the Great Basin Desert of Utah, opportunistic Pseudomonas spp. performed better on NaThionin-silenced plants compared with NaPR-1-silenced and wild-type (WT) plants, and accounted for increased plant mortality. The native herbivore community of N. attenuata attacked both NaPR-1- and PR-13/NaThionin-silenced plants to the same degree as it did in WT plants, indicating that neither PR protein provides resistance to herbivores. Although PR-1 is generally considered a marker gene of disease resistance, we found no evidence that it has an antimicrobial function. In contrast, PR-13/NaThionin is clearly an ecologically relevant defense protein involved in resisting pathogens in N. attenuata. |
abstractGer |
Increases in pathogenesis-related (PR) transcripts are commonly interpreted as evidence of plants' resistance responses to pathogens; however, few studies have examined whether increases in PR proteins protect plants growing under natural conditions. Pseudomonas syringae pv. tomato DC3000, which is virulent and causes disease in Arabidopsis, is also pathogenic to the native tobacco Nicotiana attenuata. N. attenuata responds to P. syringae pv. tomato DC3000's challenges with increases in salicylic acid and transcripts of at least two PR genes, PR-1 and PR13/Thionin. To determine if either of these PR proteins functions in bacterial resistance, we independently silenced both genes by RNAi and found that only PR-13/Thionin mediates resistance to P. syringae pv. tomato DC3000 in glasshouse experiments. When NaPR-1- and NaThionin-silenced plants were transplanted into the plant's native habitat in the Great Basin Desert of Utah, opportunistic Pseudomonas spp. performed better on NaThionin-silenced plants compared with NaPR-1-silenced and wild-type (WT) plants, and accounted for increased plant mortality. The native herbivore community of N. attenuata attacked both NaPR-1- and PR-13/NaThionin-silenced plants to the same degree as it did in WT plants, indicating that neither PR protein provides resistance to herbivores. Although PR-1 is generally considered a marker gene of disease resistance, we found no evidence that it has an antimicrobial function. In contrast, PR-13/NaThionin is clearly an ecologically relevant defense protein involved in resisting pathogens in N. attenuata. |
abstract_unstemmed |
Increases in pathogenesis-related (PR) transcripts are commonly interpreted as evidence of plants' resistance responses to pathogens; however, few studies have examined whether increases in PR proteins protect plants growing under natural conditions. Pseudomonas syringae pv. tomato DC3000, which is virulent and causes disease in Arabidopsis, is also pathogenic to the native tobacco Nicotiana attenuata. N. attenuata responds to P. syringae pv. tomato DC3000's challenges with increases in salicylic acid and transcripts of at least two PR genes, PR-1 and PR13/Thionin. To determine if either of these PR proteins functions in bacterial resistance, we independently silenced both genes by RNAi and found that only PR-13/Thionin mediates resistance to P. syringae pv. tomato DC3000 in glasshouse experiments. When NaPR-1- and NaThionin-silenced plants were transplanted into the plant's native habitat in the Great Basin Desert of Utah, opportunistic Pseudomonas spp. performed better on NaThionin-silenced plants compared with NaPR-1-silenced and wild-type (WT) plants, and accounted for increased plant mortality. The native herbivore community of N. attenuata attacked both NaPR-1- and PR-13/NaThionin-silenced plants to the same degree as it did in WT plants, indicating that neither PR protein provides resistance to herbivores. Although PR-1 is generally considered a marker gene of disease resistance, we found no evidence that it has an antimicrobial function. In contrast, PR-13/NaThionin is clearly an ecologically relevant defense protein involved in resisting pathogens in N. attenuata. |
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PR-13/Thionin But Not PR-1 Mediates Bacterial Resistance in Nicotiana attenuata in Nature, and Neither Influences Herbivore Resistance |
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