生态学杂志2011，Vol.30Issue(10)：2155-2164,10.
外源水杨酸对镉胁迫下两种菊芋品系幼苗的缓解作用
Mitigation effects of exogenous salicylic acid on the seedling growth of two Helianthus tuberosus varieties under Cd stress,
摘要
Abstract
The cadmium (Cd) in soil environment has a high toxicity, which not only harms plant growth and development, but also threatens human health. Salicylic acid (SA) , a plant growth regulator, can play an important role in inducing plant Cd-resistance. This paper studied the mitigation effects of different concentration (0, 10, 100, and 1000μmol·L-1) SA on the Cd toxicity to two H. Tuberosus varieties (NY5 and NY2) under various Cd stress (0, 50, and 100μmol·L-1). The results showed that exogenous SA could mitigate the Cd toxicity to NY5 and NY2. The SA increased the pigment content, improved the photosynthetic parameters, enhanced the bioconcentration factor (BCF) and translocation factor (TF) , and reduced the Cd accumulation in plant organs, but the optimal concentration of SA differed with the varieties and their organs. It was suggested that applying appropriate concentration of CA could effectively enhance the Cd-resistance of the two H. Tuberosus varieties.关键词
镉胁迫/水杨酸/菊芋/光合特性/镉吸收转运Key words
Cd stress/salicylic acid/Helianthus tuberosus/photosynthetic characteristics/Cd uptake and translocation分类
农业科技引用本文复制引用
陈良,隆小华,晋利,金善钊,郑晓涛,刘兆普..外源水杨酸对镉胁迫下两种菊芋品系幼苗的缓解作用[J].生态学杂志,2011,30(10):2155-2164,10.基金项目
国家科技支撑项目(2011BAD13B09)、公益性行业(农业)科研专项经费项目(200903001-05)和江苏省科技支撑项目(BE2010305)资助. （2011BAD13B09）
