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Pepper (Capsicum annum L.) Metacaspase Homologue Camc9 Functions as a Positive Regulator of Cell Death : 세포 괴사에 관여하는 고추 메타케스페이즈 유전자 연구
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- Authors
- Advisor
- 최도일
- Major
- 식물생산과학부(원예과학전공)
- Issue Date
- 2012-02
- Publisher
- 서울대학교 대학원
- Description
- 학위논문 (석사)-- 서울대학교 대학원 : 식물생산과학부(원예과학전공), 2012. 2. 최도일.
- Abstract
- Cysteine proteases such as caspases play important roles in programmed cell death (PCD) of metazoans. Metacaspases, a family of cysteine proteases are structurally similar to caspases than any other caspase-like proteases in plants. In type2 Arabidopsis metacaspases, Arabidopsis metacaspase 9 (Atmc9) has a shorter linker region between domain p10 and p20 and less than 40% identity compared to type II metacaspases. However, the biological roles of Atmc9 in plant-pathogens interaction remain largely unknown. A Capsicum annuum metacaspase 9 (Camc9) is structurally homologous to Atmc9. I demonstrated that the loss of Camc9 function delayed cell death that was induced by bacterial pathogens. Conversely, a gain of Camc9 function enhanced cell death. Under jasmonate signaling, over-expression of Camc9 accelerated hypersensitive response cell death. These results strongly suggest that Camc9 is a positive regulator in pathogen-induced plant cell death via the JA-mediated singling pathway.
- Language
- eng
- URI
- https://hdl.handle.net/10371/155118
http://dcollection.snu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000001407
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