摘要
为了挖掘樟叶越桔根优势内生真菌二型伞霉的生物学功能,将其回接到宿主组培苗中进行干旱胁迫试验,测定其对宿主组培苗干旱胁迫生理的影响。结果表明:在水分正常的情况下,二型伞霉在植物正常的生长过程中有助于增强过氧化物酶的活性;在干旱胁迫下,接种二型伞霉能够快速且显著地增强植物中过氧化物酶的活性,有利于组培苗迅速调节自身的过氧化氢酶活性;同时,二型伞霉能够快速且明显地增强植物中脯氨酸的含量和可溶性糖的累积。因此,樟叶越桔根中的优势内生真菌二型伞霉能够增强樟叶越桔抵御干旱的能力。
To excavate the biological function of Umbelopsis dimorpha,the dominant endophytic fungus in the roots of Vaccinium dunalianum,it was inoculated into the host tissue culture seedlings for drought stress test.It showed that U.dimorpha contributed to the enhancement of peroxidase activity during the normal growth of the plant under normal water conditions.Moreover,the dominant endophytic fungi could rapidly and significantly enhance the peroxidase activity in plantlets under drought stress.This was conducive to the rapid regulation of catalase activity in plantlets.At the same time,the content of proline in plantlets was increased more rapidly and significantly,and the response speed of the regulation of soluble sugar content in plantlets was improved to contribute its accumulation under drought stress.The results indicated that U.dimorpha,the dominant endophytic fungus in the roots of V.dunalianum could enhance the drought resistance of the host.
作者
安雪菲
罗旭璐
唐军荣
刘云
杨晓琴
马焕成
赵平
An Xuefei;Luo Xulu;Tang Junrong;Liu Yun;Yang Xiaoqin;Ma Huancheng;Zhao Ping(Key Laboratory of National Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China,Southwest Forestry University,Kunming Yunnan 650233,China;Key Laboratory of National Forestry and Grassland Administration on Biodiversity Conservation in Southwest China,Southwest Forestry University,Kunming Yunnan 650233,China;Yunnan Forestry Technological College,Kunming Yunnan 650233,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2022年第1期108-114,共7页
Journal of Southwest Forestry University：Natural Sciences
基金
云南省教育厅科学研究基金项目(2020Y0405)资助
国家自然科学基金项目(32060107,32060327)资助。
关键词
樟叶越桔
组培苗
真菌
二型伞霉
干旱胁迫
Vaccinium dunalianum
tissue culture seedling
fungi
Umbelopsis dimorpha
drought stress
