干旱区生态环境知识资源中心(Arid): 红砂愈伤组织适应盐胁迫的渗透调节机制研究

Arid

	红砂愈伤组织适应盐胁迫的渗透调节机制研究
其他题名	Study on Mechanisms of Osmo regulation of Reaumuria soongorica Callus in Adapting to Salt Stress
	谭会娟; 李新荣; 赵昕; 刘玉冰
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2011
卷号	31 期号:5 页码:1119-1123
中文摘要	测定在不同盐胁迫下红砂愈伤组织中几种渗透调节物质的累积量,研究盐胁迫下红砂的渗透调节机制。研究结果表明,在盐胁迫下,红砂愈伤组织的相对生长率随着盐浓度的增加先升高后降低。红砂愈伤组织具有很强的耐盐能力,低于100 mM NaCl处理可促进红砂的生长,大于100 mM NaCl处理,则会抑制红砂生长。红砂愈伤组织中脯氨酸、甘氨酸甜菜碱、类黄酮和海藻糖在盐胁迫下大量累积,是红砂渗透调节能力改善的积极反应,也是红砂耐盐性强的体现和重要原因。
英文摘要	Reaumuria soongorica (Pall.) Maxim.,a perennial semi-shrub,is widely found in semi-arid areas in northwestern China. It is a resurrection plant that can tolerate prolonged protoplast desiccation conditions and revive upon rehydration. The present study aimed to investigate the salt tolerance mechanisms of calluses induced from R. soongorica. The growth and organic osmolytes under salt stress were examined. Results were summarized as follows. The relative growth rate of R. soongorica callus reached the maximum in 14 days presence of 100 mM NaCI and it was inhibited with further increasing of NaCl concentrations. The callus had higher relative growth rate in low salt concentrations than in high NaCl concentrations or no NaCl, which indicated that R. soongorica callus need salt in the progress of R. soongorica growing. Examination of the osmotic substances under salt stress showed accumulation of proline,glycine betaine and trehalose with increasing of NaCl concentrations,and the strong osmotic adjustment ability was a important factor in the salt resistant mechanism. The results indicated that the calluses of R. soongorica retained similar to other halophytes in response to salt stress.
中文关键词	红砂 ; 愈伤组织 ; 盐胁迫 ; 渗透调节
英文关键词	Reaumuria soongorica callus salt stress osmotic adjustment
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:4311317
来源机构	中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/227544
作者单位	中国科学院寒区旱区环境与工程研究所, 中国科学院极端环境生物抗逆特性与生物技术实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	谭会娟,李新荣,赵昕,等. 红砂愈伤组织适应盐胁迫的渗透调节机制研究[J]. 中国科学院西北生态环境资源研究院,2011,31(5):1119-1123.
APA	谭会娟,李新荣,赵昕,&刘玉冰.(2011).红砂愈伤组织适应盐胁迫的渗透调节机制研究.中国沙漠,31(5),1119-1123.
MLA	谭会娟,et al."红砂愈伤组织适应盐胁迫的渗透调节机制研究".中国沙漠 31.5(2011):1119-1123.