CAJ | 학술논문

低温是植物生长的主要环境胁迫因子之一.植物对低温的应激是一个复杂的过程,包括低温信号的感知、信号转导和转录调控等阶段.低温可以通过质膜流动性的改变被质膜感知,也可以通过质膜上的钙离子通透性通道、组氨酸激酶、受体激酶和磷酸酯酶感知.低温信号转导包括钙信号途径和其他信号途径,其中钙信号途径是低温应答过程中重要的信号途径.在此途径中,因低温增加的胞质钙离子能被CDPK、磷酸酶和MAPK识别并传导;其他信号途径主要与ABA有关.低温信号最终将启动CBF和非CBF介导的转录调控,提高植物的低温抗性.
저온시식물생장적주요배경협박인자지일.식물대저온적응격시일개복잡적과정,포괄저온신호적감지、신호전도화전록조공등계단.저온가이통과질막류동성적개변피질막감지,야가이통과질막상적개리자통투성통도、조안산격매、수체격매화린산지매감지.저온신호전도포괄개신호도경화기타신호도경,기중개신호도경시저온응답과정중중요적신호도경.재차도경중,인저온증가적포질개리자능피CDPK、린산매화MAPK식별병전도;기타신호도경주요여ABA유관.저온신호최종장계동CBF화비CBF개도적전록조공,제고식물적저온항성.
Cold is one of the key environmental stressors which affect plant growth and development. The response process of plant to cold is a complex procedure. It includes several steps, such as low temperature signal perception, signal transduction, transcription regulation. Cold can be perceived by plasma membrane either due to changes in membrane fluidity or with the help of sensors like Ca2+ permeable channels, histidine kinases, receptor kinases and phospholipases. Cold signal transduction includes calcium signal pathway and other signal pathways, of which calcium signal pathway is an important pathway of cold response process in plant. In this pathway, cytosolic Ca2+induced by cold can be recognized and transduced by CDPKs, phoshatase and MAPKs. Other signal pathways are mainly related to ABA. Cold signal will at last switch on CBF and non-CBF independent transcriptional cascade, thus to improve plant resistance to cold.