农药学学报2012，Vol.14Issue(3)：267-276,10.DOI:10.3969/j.issn.1008-7303.2012.03.05
冠菌素对盐胁迫下棉花幼苗中渗透调节物质和激素水平的调控
Effect of coronatine on osmotic regulation and hormone of cotton (Gossypium hirsutum L.)seedling under salt stress
摘要
Abstract
Salinity is the major environmental factor that limits cotton germination and growth in cotton seedling period. To evaluate the potential of coronatine (COR) for alleviating salt stress on osmotic regulation and hormone of cotton seedling, hydroponical culture experiments were carried out using transgenic insect-resistant cotton (Gossypium hirsutum L. ,cv. CCRI 41 ,CCRI 45 and 99B) treated with NaCl and COR. The results showed that coronatine increased the proline content by 110% under salinity stress,compared to NaCl treatment. Abscisic acid (ABA) content in leaves were increased by 27% , 119% and 239% , respectively, under 0. 01,0. 1 and 1 μmol/L COR treatment, and ABA content in root were increased by 222% and 130% , respectively, under 0. 1 and 1 μmol/L COR treatment. Coronatine also caused a considerable increase in jasmonate (JAs) ,and indole-3-acetic acid (IAA) content,which may induced the expression of genes response to salt stress,maintained the stability of membrane,thus,enhanced the ability of osmotic regulation of cotton seedlings.关键词
冠菌素/盐胁迫/棉花/渗透调节/激素Key words
coronatine/salt stress/cotton/osmotic regulation/hormone分类
农业科技引用本文复制引用
谢志霞,杜明伟,李茂营,李召虎,田晓莉,段留生..冠菌素对盐胁迫下棉花幼苗中渗透调节物质和激素水平的调控[J].农药学学报,2012,14(3):267-276,10.基金项目
国家自然科学基金(30871490) （30871490）
国家高技术研究发展计划(863计划)项目(2011AA10A206). （863计划）
