Identification and evaluation of Aspergillus tubingensis as a potential biocontrol agent against grey mould on tomato

文献类型： 外文期刊

第一作者： Zhao, Juan

作者： Zhao, Juan;Liu, Weicheng;Liu, Dewen;Lu, Caige;Zhang, Dianpeng;Wu, Huiling;Dong, Dan;Meng, Lingling

作者机构：

关键词： Aspergillus tubingensis;Species identification;Grey mould;Botrytis cinerea;Biocontrol potential;Plant growth promotion

期刊名称：JOURNAL OF GENERAL PLANT PATHOLOGY （ 影响因子：1.449； 五年影响因子：1.416 ）

ISSN： 1345-2630

年卷期： 2018 年 84 卷 2 期

页码：

收录情况： SCI

摘要： Grey mould of tomato caused by Botrytis cinerea is a highly damaging disease worldwide. This study was aimed at identifying fungal strain QF05, which was isolated from the sandy soil collected in the Qinghai-Tibet Plateau in China and to evaluate its biocontrol potential on grey mould and growth promotion effect on tomato plants. On the basis of morphological observation and a multigene phylogeny based on the ITS, beta-tubulin and calmodulin genes, QF05 was identified as Aspergillus tubingensis. An in vitro dual culture test indicated obvious antagonistic activity by strain QF05 against B. cinerea. Strain QF05 distinctly reduced grey mould in assays on tomato fruits and plants. Treatments with the culture filtrate of strain QF05 and a tenfold dilution of the filtrate gave disease biocontrol efficacy of 34.5 and 31.0% on tomato plants, respectively. QF05 also promoted seed germination and plant growth of tomato. Length and total fresh and dry mass of tomato plants were all significantly increased by 17.8, 25.7 and 56.8%, respectively, after treatment with the tenfold dilution of the culture filtrate. QF05 also had positive biocontrol attributes such as indoleacetic acid and siderophore production, phosphate solubilization, and rhizosphere colonization. All these results indicated the good performance of A. tubingensis QF05 for the biocontrol of tomato grey mould and growth promotion of tomato plants.

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