Identification and Characterization of Three Epichloë Endophytes Isolated from Wild Barley in China
文献类型： 外文期刊
作者： Wang, Zhengfeng 1 ; Zhao, Feng 1 ; Bao, Qijun 1 ; Liu, Xiaoning 1 ; Guo, Cheng 2 ;
作者机构： 1.Gansu Acad Agr Sci, Econ Crop & Malt Barley Res Inst, Lanzhou 730070, Peoples R China
2.Gansu Acad Agr Sci, Plant Protect Res Inst, Lanzhou 730070, Peoples R China
关键词：
wild barley;
期刊名称：JOURNAL OF FUNGI （ 影响因子：4.0； 五年影响因子：4.5 ）
ISSN：
年卷期： 2025 年 11 卷 2 期
页码：
收录情况： SCI
摘要： Epichlo & euml; endophytes have been found in cool-season grasses and can produce alkaloids that are toxic to vertebrates and insects. Due to their beneficial effects, Epichlo & euml; can provide plants with resistance to some abiotic and biotic stresses. The biological and physiological characteristics of the endophytic strains XJE1, XJE2, and XJE3 isolated from wild barley were measured across a range of pH, salt concentrations, and growth values. The phylogenetic position of the Epichlo & euml; isolates was examined using the tefA and actG genes. The optimal pH values for mycelial growth of XJE1, XJE2, and XJE3 were 7-8, 6-7, and 8-9, respectively. The isolates grew significantly better at 0.3 mol/L NaCl than at 0.5 mol/L and 0.1 mol/L NaCl. Based on the conidiophore and conidia morphology, growth characteristics, and phylogenetic relationships, the endophyte isolated from wild barley is likely Epichlo & euml; bromicola. These isolates exhibited differences in mating types and alkaloid biosynthesis genes. Screening for salt tolerance and alkaloid biosynthetic genes in endophytic strains will provide new insights into useful traits to breed into new forage germplasms.
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