摘要
多胺与乙烯是植物体内广泛存在并具有重要生理作用的两类生长调节物质,具有共同的前体S-腺苷蛋氨酸。在逆境胁迫下,多胺的含量与乙烯的产生速率一般会发生显著的变化并相互影响,具体影响取决于植物的种类、器官、组织及胁迫的程度、方式等。在逆境胁迫下多胺对细胞膜系统具有显著的保护作用,而乙烯则可增加细胞膜的透性,二者代谢上的变化对细胞膜保护系统,特别是对植物体内活性氧、自由基的产生与清除体系具有重要的影响。
Polyamines and ethylene occur ubiquitously in plant kingdom and orchestrate plant growth, development and stress physiology, therefore both of them are regarded as two kinds of important plant growth regulators, and both have the same substrate s-adenosylmethionine (SAM). During osmotic stress both polyamines content and ethylene evolution changed generally and may interact with each other, and the correlation between them is determined by many factors, such as plant species, organs, tissues and the stress methods and degrees. Polyamines do have some important protective effects on cell membrane protective system, on the other hand ethylene promotes cell membrane permeability, therefore the interaction between polyamines and ethylene does have some important influences on cell membrane protective systems, particularly on the system of active oxygen and free radicals generating and scavenging system.
出处
《甘肃农业大学学报》
CAS
CSCD
2002年第3期265-271,共7页
Journal of Gansu Agricultural University
基金
国家重点基础研究专项资金(G1999011705)
国家自然科学基金(30170161)
关键词
相关性
逆境胁迫
多胺
乙烯
细胞膜保护系统
代谢
adverse environmental stress
polyamines
ethylene
cell membrane protection system
