干旱胁迫对文冠果脯氨酸和可溶性蛋白质含量的影响
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摘要
为探究文冠果的耐旱机制,对文冠果幼苗进行不同程度的干旱胁迫处理,分析文冠果叶片的脯氨酸和可溶性蛋白含量变化。结果表明:随着干旱胁迫的加重,文冠果幼苗体内积累的脯氨酸含量随之增加。可溶性蛋白质含量在重度干旱处理下最高,表明重度干旱胁迫对可溶性蛋白含量影响最大,而中度干旱胁迫对可溶性蛋白含量影响较小,表明文冠果幼苗体内的可溶性蛋白质含量与干旱胁迫程度呈正相关。
In order to explore the drought tolerance mechanism of Xanthoceras sorbifolia,different degrees of drought stress were applied to Xanthoceras sorbifolia seedlings,and the changes of proline and soluble protein contents in Xanthoceras sorbifolia leaves were analyzed.The results showed that proline accumulation in Xanthoceras sorbifolia seedlings increased with the increase of drought stress.Soluble protein content was the highest under severe drought stress,which indicated that severe drought stress had the greatest effect on soluble protein content,while mild drought stress had little effect on soluble protein content,indicating that soluble protein content in Xanthoceras sorbifolia seedlings was positively correlated with the degree of drought stress.
In order to explore the drought tolerance mechanism of Xanthoceras sorbifolia,different degrees of drought stress were applied to Xanthoceras sorbifolia seedlings,and the changes of proline and soluble protein contents in Xanthoceras sorbifolia leaves were analyzed.The results showed that proline accumulation in Xanthoceras sorbifolia seedlings increased with the increase of drought stress.Soluble protein content was the highest under severe drought stress,which indicated that severe drought stress had the greatest effect on soluble protein content,while mild drought stress had little effect on soluble protein content,indicating that soluble protein content in Xanthoceras sorbifolia seedlings was positively correlated with the degree of drought stress.
引文
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[3]祁伟亮,冯鸿,刘松青,等.不同桑品种在干旱胁迫下脯氨酸及可溶性蛋白质含量的变化规律研究[J].中国野生植物资源,2017,36(5):34-36,39.
[4]郭春芳,孙云.干旱胁迫下植物的渗透调节及脯氨酸代谢研究进展[J].福建教育学院学报,2015,16(1):114-118,128.
[5]刘旋,田礼欣,佟昊阳,等.低温胁迫下玉米幼苗根系受外源海藻糖调控的生理表现[J].生态学杂志,2018(8):2354-2361.
[6]刘旦.5-氨基乙酰丙酸调控干旱胁迫下油菜幼苗生长的生理机制研究[D].杭州:浙江大学,2012.
[7]李楠,孙航,张姝哲,等.辽河保护区五种委陵菜在PEG胁迫下渗透调节物质可溶性蛋白质与脯氨酸变化[J].湖北农业科学,2016,55(8):1936-1938,1978.