Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringae
Pathogens induce pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) and effector-triggered immunity (ETI) in plants. PAMPs are microbial molecules recognized by host plants as nonself signals, whereas pathogen effectors are evolved to aid in parasitism but are sometimes recognized...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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The American Phytopathological Society
2010-07-01
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| Series: | Molecular Plant-Microbe Interactions |
| Online Access: | https://apsjournals.apsnet.org/doi/10.1094/MPMI-23-7-0940 |
| _version_ | 1811291175204683776 |
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| author | Jie Zhang Haibin Lu Xinyan Li Yan Li Haitao Cui Chi-Kuang Wen Xiaoyan Tang Zhen Su Jian-Min Zhou |
| author_facet | Jie Zhang Haibin Lu Xinyan Li Yan Li Haitao Cui Chi-Kuang Wen Xiaoyan Tang Zhen Su Jian-Min Zhou |
| author_sort | Jie Zhang |
| collection | DOAJ |
| description | Pathogens induce pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) and effector-triggered immunity (ETI) in plants. PAMPs are microbial molecules recognized by host plants as nonself signals, whereas pathogen effectors are evolved to aid in parasitism but are sometimes recognized by specific intracellular resistance proteins. In the absence of detectable ETI determining classical incompatible interactions, basal resistance exists during compatible and nonhost interactions. What triggers the basal resistance has remained elusive. Here, we provide evidence that ETI contributes to basal resistance during both compatible and nonhost Arabidopsis–Pseudomonas syringae interactions. Mutations in RAR1 and NDR1, two genes required for ETI, compromise basal resistance in both compatible and nonhost interactions. Complete nonhost resistance to P. syringae pv. tabaci required a functional type III secretion system. PTI appears to play a greater role in nonhost resistance than basal resistance during compatible interactions, because abrogation of PTI compromises basal resistance during nonhost but not compatible interactions. Strikingly, simultaneous abrogation of ETI and flagellin-induced PTI rendered plants completely susceptible to the nonadapted bacterium P. syringae pv. tabaci, indicating that ETI and PTI act synergistically during nonhost resistance. Thus, both nonhost resistance and basal resistance to virulent bacteria can be unified under PTI and ETI. |
| first_indexed | 2024-04-13T04:25:29Z |
| format | Article |
| id | doaj.art-00869e95cc054b079d9dad4e2629170b |
| institution | Directory Open Access Journal |
| issn | 0894-0282 1943-7706 |
| language | English |
| last_indexed | 2024-04-13T04:25:29Z |
| publishDate | 2010-07-01 |
| publisher | The American Phytopathological Society |
| record_format | Article |
| series | Molecular Plant-Microbe Interactions |
| spelling | doaj.art-00869e95cc054b079d9dad4e2629170b2022-12-22T03:02:32ZengThe American Phytopathological SocietyMolecular Plant-Microbe Interactions0894-02821943-77062010-07-0123794094810.1094/MPMI-23-7-0940Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringaeJie ZhangHaibin LuXinyan LiYan LiHaitao CuiChi-Kuang WenXiaoyan TangZhen SuJian-Min ZhouPathogens induce pathogen-associated molecular pattern (PAMP)-triggered immunity (PTI) and effector-triggered immunity (ETI) in plants. PAMPs are microbial molecules recognized by host plants as nonself signals, whereas pathogen effectors are evolved to aid in parasitism but are sometimes recognized by specific intracellular resistance proteins. In the absence of detectable ETI determining classical incompatible interactions, basal resistance exists during compatible and nonhost interactions. What triggers the basal resistance has remained elusive. Here, we provide evidence that ETI contributes to basal resistance during both compatible and nonhost Arabidopsis–Pseudomonas syringae interactions. Mutations in RAR1 and NDR1, two genes required for ETI, compromise basal resistance in both compatible and nonhost interactions. Complete nonhost resistance to P. syringae pv. tabaci required a functional type III secretion system. PTI appears to play a greater role in nonhost resistance than basal resistance during compatible interactions, because abrogation of PTI compromises basal resistance during nonhost but not compatible interactions. Strikingly, simultaneous abrogation of ETI and flagellin-induced PTI rendered plants completely susceptible to the nonadapted bacterium P. syringae pv. tabaci, indicating that ETI and PTI act synergistically during nonhost resistance. Thus, both nonhost resistance and basal resistance to virulent bacteria can be unified under PTI and ETI.https://apsjournals.apsnet.org/doi/10.1094/MPMI-23-7-0940 |
| spellingShingle | Jie Zhang Haibin Lu Xinyan Li Yan Li Haitao Cui Chi-Kuang Wen Xiaoyan Tang Zhen Su Jian-Min Zhou Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringae Molecular Plant-Microbe Interactions |
| title | Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringae |
| title_full | Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringae |
| title_fullStr | Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringae |
| title_full_unstemmed | Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringae |
| title_short | Effector-Triggered and Pathogen-Associated Molecular Pattern–Triggered Immunity Differentially Contribute to Basal Resistance to Pseudomonas syringae |
| title_sort | effector triggered and pathogen associated molecular pattern triggered immunity differentially contribute to basal resistance to pseudomonas syringae |
| url | https://apsjournals.apsnet.org/doi/10.1094/MPMI-23-7-0940 |
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