The role of β-aminobutyric acid in enhancing cadmium tolerance in Arabidopsis thaliana
The role of β-aminobutyric acid in enhancing cadmium tolerance in Arabidopsis thaliana
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DOI：
10.1134/s1021443709040190
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发表时间：
2009-06
影响因子：
1.4
通讯作者：
S. Cao;G. Ren;L. Jiang;H. Yuan;G. Ma
中科院分区：
文献类型：
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作者：
S. Cao;G. Ren;L. Jiang;H. Yuan;G. Ma
β-氨基丁酸（BABA）预处理可显著缓解镉胁迫对拟南芥根系生长的抑制作用。在Cd胁迫下，ABA处理与未处理植株的Cd含量差异不显著。谷胱甘肽（GSH）的生物合成的抑制剂丁硫酰亚胺的治疗，取消了ABA介导的增强镉耐受性。此外，ABA处理的植株中GSH 1和AtATM 3的转录水平略高于水处理的Cd胁迫植株。我们的研究结果表明，BABA保护拟南芥镉胁迫通过GSH依赖的途径。
An inhibition of the root growth of Arabidopsis plants subjected to cadmium-induced stress was significantly alleviated by β-aminobutyric acid (BABA) pretreatment. There was no significant difference in Cd content between BABA-pretreated and BABA-untreated plants under Cd stress. Treatment with buthionine sulfoximine, an inhibitor of glutathione (GSH) biosynthesis, abolished BABA-mediated enhanced Cd tolerance. In addition, the transcript levels ofGSH1andAtATM3in BABA-treated plants were somewhat higher than those of water-treated plants subjected to Cd stress. Our results suggest that BABA protects Arabidopsis against Cd stress through a GSH-dependent pathway.