文献类型：期刊文献

英文题名：Sequencing of leaf endophytic fungal communities of Carya illinoinensis revealed a dominance of pathogenic fungi

作者：Wang, Lujun[1] Zhou, Misheng[1] Cai, Xinling[1] Liu, En[3] Koide, Roger T.[2] Zhang, Qian[3]

第一作者：Wang, Lujun

通信作者：Zhang, Q[1]

机构：[1]Anhui Acad Forestry, 618-1 Huangshan Rd, Hefei 230031, Peoples R China;[2]Brigham Young Univ, Dept Biol, Provo, UT 84602 USA;[3]Chinese Acad Forestry, Res Inst Forestry, 1 Dongxiaofu,Xiangshan Rd, Beijing 100091, Peoples R China

年份：2024

卷号：131

外文期刊名：PHYSIOLOGICAL AND MOLECULAR PLANT PATHOLOGY

收录：;Scopus(收录号：2-s2.0-85187701812);WOS:【SCI-EXPANDED(收录号:WOS:001289623600001)】；

基金：This work was supported by the Forestry Science and Technology Extension Demonstration Project of Central Finance (Wan2021TG04) and National Nature Science Foundation of China (31870099)

语种：英文

外文关键词：Leaf endophyte; Functional annotation; Plant pathogen; Pecan tree age

摘要：Understanding the composition of leaf endophytic fungal communities could have important implications for orchard management. The planted area of pecan trees, Carya illinoinensis, , is increasing in China. Leaf diseases of pecan trees cause huge economic losses and have incidence ofabout 50%-90%. However, little is known about whether the pathogens mainly persist on leaf surfaces, in the soil or in the air, or live within leaves as endophytes. In this study, pecan leaves were sampled from 2-, 3-, 6-, and 10-year old trees in the subtropical humid monsoon climate of China, and leaf endophytic fungal communities were characterized using high throughput sequencing. Leaf endophytic fungal OTUs (operational taxonomic units) mainly belonged to Ascomycota, with a much smaller fraction in the Basidiomycota. Ramularia was the dominant genus across all four tree ages. Plant pathogens were found to be the dominant functional guild by functional group annotation using FUNGuild. Three known disease agents of pecan ( Trichomerium dioscoreae, , Phaeosphaeria fuckelii and Alternaria alternata), ), were detected as leaf endophytes. To our knowledge, this is the first report of leaf fungal pathogens occurring as dominant endophytes in pecan leaves.