Dark septate endophyte Falciphora oryzae-assisted alleviation of cadmium in rice

文献类型： 外文期刊

第一作者： Su, Zhen-Zhu

作者： Su, Zhen-Zhu;Dai, Meng-Di;Zhu, Jia-Nan;Liu, Xiao-Hong;Li, Lin;Lin, Fu-Cheng;Zhu, Xue-Ming;Wang, Jiao-Yu;Lin, Fu-Cheng;Yuan, Zhi-Lin

作者机构：

关键词： Dark septate endophytes; Cadmium; Tolerance; Proteomics; Syntaxin1

期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）

ISSN： 0304-3894

年卷期： 2021 年 419 卷

页码：

收录情况： SCI

摘要： Dark septate endophytes (DSEs) are the typical representatives of root endophytic fungi in heavy metal (HM)contaminated environments. However, little is known about their roles in the HMs tolerance of hosts and the underlying mechanism. Here, we investigated the biological roles and molecular mechanisms of a DSE strain Falciphora oryzae in alleviating cadmium (Cd) toxicities in rice. It was found that F. oryzae possessed a capacity of accumulating Cd in its vacuoles and chlamydospores. During symbiosis, F. oryzae conferred improved Cd tolerance to rice, decreasing Cd accumulation in roots and translocation to shoots. F. oryzae alleviated Cd toxicity to rice by sequestering Cd in its vacuoles. Further application of F. oryzae as fertilizer in the field could reduce Cd content in rice grains. We identified a SNARE Syntaxin 1 gene through proteomics, which participated in Cd tolerance of F. oryzae by regulating chlamydospore formation and vacuole enlargement. This study provided novel insights into how the DSEs and their host plants combat Cd stress.

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