文献类型：期刊文献

英文题名：Lycoperdon perlatum from a coniferous forest forms an ectomycorrhizal relation with and increases drought resistance of Populus x canadensis 'Zhongliao 1'

作者：Zhang, Yan[1] Peng, Long[2] Wang, Shiqi[1] Yao, Jiajia[2] Feng, Lianrong[1] Yang, Chengchao[1] Wang, Nairui[1] Lin, Yang[3] Jiao, Liman[1] Peng, Rusheng[1]

第一作者：Zhang, Yan

通信作者：Zhang, Y[1]

机构：[1]Liaoning Inst Poplar Res, Gaizhou 115213, Peoples R China;[2]Chinese Acad Forestry, Res Inst Subtrop Forestry, Daqiao Rd 73, Hangzhou 311400, Peoples R China;[3]Liaoning Inst Aridland Agr & Forestry, Chaoyang 122099, Peoples R China

年份：2025

外文期刊名：SYMBIOSIS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001425300300001)】；

基金：This work was financially supported by The Natural Science Foundation of Liaoning Province [grant number 2023-MS-048] and The National Key Research and Development Program of China [grant number 2021YFD2201200] and The Research and Development Program of Liaoning Forestry and Grassland Bureau relying on the Scientific and Technological Innovation Platform of the National Forestry and Grassland Administration[grant no. LLC[2022]18].

语种：英文

外文关键词：Drought resistance; Ectomycorrhizal fungi; Root architecture; Osmotic regulation; Antioxidant enzyme; Reactive oxygen species

摘要：Plant-fungal symbiotic associations benefit initial plant adaptation to droughty terrestrial ecosystems. Although information on mycorrhizal and endophytic fungi in drought-resistant mechanisms in crops and conifer species is increasing, additional information is needed on novel ectomycorrhizal fungi that promote adaptation in broad-leaf species. In this study, the effect of the ectomycorrhizal association formed by Lycoperdon perlatum isolated from coniferous forest soil and Populus x canadensis 'Zhongliao 1' on drought resistance was investigated. After colonization, ectomycorrhizal symbiosis was detected in poplar roots, and simultaneously typical characteristic fungal mantle and Hartig net structures were observed in the cross-section of ectomycorrhiza under laser scanning confocal microscopy. Fungal colonization led to increases in plant growth and regulation of root system architecture. Under drought stress, accumulations of soluble sugar and proline increased in colonized plants. Furthermore, the plant-fungal association increased antioxidant enzyme activity, which inhibited the production of reactive oxygen species (ROS) and decreased malondialdehyde content. The results of the study indicated that the ectomycorrhizal symbiosis facilitated drought resistance by both substantially increasing the content of osmoregulatory substances and diminishing excess ROS. Thus, ectomycorrhizal fungi from coniferous forests can establish associations that increase the adaptation of broad-leaf species to the environment.