摘要
γ-氨基丁酸(GABA)是一种四碳非蛋白氨基酸,是植物抵抗逆境胁迫的主要代谢产物,在逆境胁迫下在植物体内大量积累,有可能提高植物对逆境胁迫的适应能力。为探究γ-氨基丁酸(GABA)对桑树耐盐能力的影响,对NaCl胁迫处理下的桑树幼苗施用外源GABA。结果发现,外源GABA可显著缓解NaCl对桑苗生长的抑制作用,植株叶片的受损伤程度也得到了显著地缓解,同时还减少了O 2-·和H 2O 2在桑树幼苗根尖和叶片中的积累,抑制了活性氧的爆发。因此,GABA的合成代谢可能影响桑树的耐盐能力。
γ-Aminobutyric acid(GABA)is the main metabolite of plants to resist stress.Under stress,a large amount of GABA accumulates in plants,which may improve the adaptability of plants to stress.For inquiryγ-The effect of aminobutyric acid(GABA)on the salt tolerance of mulberry seedlings.The application of exogenous GABA to mulberry seedlings under NaCl stress found that exogenous GABA could significantly alleviate the inhibitory effect of NaCl on the growth of mulberry seedlings,significantly alleviate the damage degree of plant leaves,reduce the accumulation of O 2-·and H 2O 2 in the root tips and leaves of mulberry seedlings,and inhibit the outbreak of reactive oxygen species.Therefore,the anabolism of GABA may affect the salt tolerance of mulberry.
作者
张利琴
殷红燕
张波
杨健
李燕
Zhang Liqin;Yin Hongyan;Zhang Bo;Yang Jian;Li Yan(Tai'an forestry protection and Development Center,Tai'an Shandong 271000,China;Jinan Xiehe Bilingual Experimental School,Jinan Shandong 250107,China)
出处
《北方蚕业》
2021年第3期25-29,共5页
North Sericulture
基金
山东省农业科技园区产业提升工程项目(2019YQ012)。
