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Position: Home > Articles > Effects of applying exogenous plant hormone on praline metabolism of Swainsonia salsula seedlings under NaCl stress Acta Prataculturae Sinica 2014,23 (2) 189-195

外源植物激素对NaCl胁迫下苦马豆苗期脯氨酸代谢的影响

作  者:
王若梦;董宽虎;李钰莹;李晨;杨静芳
单  位:
山西农业大学动物科技学院
关键词:
苦马豆;植物激素;盐胁迫;脯氨酸代谢
摘  要:
以苦马豆为实验材料,在8种不同浓度NaCl(0,80,160,240,320,400,480和560mmol/L)胁迫下,分别向叶面喷施细胞分裂素类物质6-BA和脱落酸(ABA),通过2周的胁迫生长后,对其根冠比、脯氨酸以及脯氨酸代谢酶活性进行测定,进行外源植物激素对苦马豆耐盐性影响的研究,为进一步培育耐盐牧草提供一定的理论基础。结果表明,外源植物激素可以提高苦马豆的抗盐性,且根系中酶活性对植物激素的敏感程度大于叶片。植物激素6-BA比ABA的作用更为显著。外源植物激素使苦马豆幼苗中脯氨酸不再是抗逆性的主要检测指标。
译  名:
Effects of applying exogenous plant hormone on praline metabolism of Swainsonia salsula seedlings under NaCl stress
作  者:
WANG Ruo-meng;DONG Kuan-hu;LI Yu-ying;LI Chen;YANG Jing-fang;Shanxi Agricultural University,College of Animal Science and Veterinary Medicine;
关键词:
Swainsonia salsula;;plant hormone;;salt stress;;proline metabolism
摘  要:
Swainsonia salsula seedlings were treated with cytokinin(6-BA)and abscisic acid(ABA)then subjected to eight salt treatments(0,80,160,240,320,400,480,560mmol/L of NaCl).Proline metabolism enzymes,root top ratio of leaves and roots of S.salsula were analyzed to study the effects of exogenous plant hormone on salinity tolerance after two weeks to provide a theoretical basis for cultivation of salt-tolerant forage.Exogenous plant hormone improved salinity to lerance of S.salsula.Under exogenous plant hormone treatment,roots were more sensitive to hormone treatment than leaves and the effect of 6-BA was more significant than that of ABA.After exposure to exogenous plant hormone,other indexes of stress resistance were reduced except Pro in S.salsula.

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