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한국식물학회 / v.53, no.1, 2010년, pp.70-78 
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( Alerted Defense System Attenuates Hypersensitive Response-Associated Cell Death in Arabidopsis siz1 Mutant ) |
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| 초 록 |
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| Plants defend themselves by inducing sophisticated multilevel defense responses against pathogenic attack. The first line of defense against microbial pathogens is the process of nonself-recognition, which mediates the activation of the necessary defense repertoire. The hypersensitive response (HR), a macroscopic collapse of plant leaves in primary infection site, is one of such plant resistance responses. Subsequently, the HR triggers a general resistance mechanism called systemic acquired resistance (SAR), rendering uninfected parts of the plants less sensitive to further pathogenic attacks. Here, we show that SIZ1 mutation-mediated preexisting SAR attenuates HR-associated cell death in Arabidopsis thaliana. In siz1 mutant, the amount of PR1 and PR5 stayed high level, and the growth of pathogenic bacteria Pseudomonas syringae pv. maculicola (Pma) strain $M6C{Delta}E$ was reduced. Early callose deposition, spontaneous formation of microscopic cell death, and reactive oxygen species (ROS) were also observed in siz1 mutant. |
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| 키워드 |
| Plant defense response;SUMO E3 ligase;Hypersensitive response;Cell death;Systemic acquired resistance; |
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Journal of Plant Biology / v.53, no.1, 2010년, pp.70-78
한국식물학회
ISSN : 1226-9239
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201022442400881)
언어 : 영어 |
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| 논문 제공 : KISTI 한국과학기술정보연구원 |
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