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新兴盐沼作为新型拟康宁木霉和其他真菌生物效应物的来源，用于生物盐农业。

Emerging salt marshes as a source of Trichoderma arenarium sp. nov. and other fungal bioeffectors for biosaline agriculture.

机构信息

Fungal Genomics Laboratory (FungiG), Nanjing Agricultural University, Nanjing, P.R. China.

Jiangsu Provincial Key Lab of Solid Organic Waste Utilization, Jiangsu Collaborative Innovation Center of Solid Organic Wastes, Educational Ministry Engineering Center of Resource-Saving Fertilizers, Nanjing Agricultural University, Nanjing, P.R. China.

出版信息

J Appl Microbiol. 2021 Jan;130(1):179-195. doi: 10.1111/jam.14751. Epub 2020 Jul 24.

DOI:10.1111/jam.14751
PMID:32590882
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7818382/
Abstract

AIMS

Sustainable agriculture requires effective and safe biofertilizers and biofungicides with low environmental impact. Natural ecosystems that closely resemble the conditions of biosaline agriculture may present a reservoir for fungal strains that can be used as novel bioeffectors.

METHODS AND RESULTS

We isolated a library of fungi from the rhizosphere of three natural halotolerant plants grown in the emerging tidal salt marshes on the south-east coast of China. DNA barcoding of 116 isolates based on the rRNA ITS1 and 2 and other markers (tef1 or rpb2) revealed 38 fungal species, including plant pathogenic (41%), saprotrophic (24%) and mycoparasitic (28%) taxa. The mycoparasitic fungi were mainly species from the hypocrealean genus Trichoderma, including at least four novel phylotypes. Two of them, representing the taxa Trichoderma arenarium sp. nov. (described here) and T. asperelloides, showed antagonistic activity against five phytopathogenic fungi, and significant growth promotion on tomato seedlings under the conditions of saline agriculture.

CONCLUSIONS

Trichoderma spp. of salt marshes play the role of natural biological control in young soil ecosystems with a putatively premature microbiome.

SIGNIFICANCE AND IMPACT OF THE STUDY

The saline soil microbiome is a rich source of halotolerant bioeffectors that can be used in biosaline agriculture.

摘要

目的

可持续农业需要具有低环境影响的有效且安全的生物肥料和生物杀菌剂。与生物盐农业条件非常相似的自然生态系统可能为真菌菌株提供了一个储备库，这些菌株可以用作新型生物效应物。

方法和结果

我们从中国东南沿海新兴潮汐盐沼中生长的三种耐盐植物的根际中分离了一批真菌文库。基于 rRNA ITS1 和 2 以及其他标记物（tef1 或 rpb2）对 116 个分离物进行 DNA 条形码分析，揭示了 38 种真菌物种，包括植物病原性（41%）、腐生性（24%）和真菌寄生性（28%）类群。真菌寄生菌主要来自 Hypocrealean 属的 Trichoderma，包括至少四个新的系统发育型。其中两种，代表新种 Trichoderma arenarium sp. nov.（本文描述）和 T. asperelloides，对五种植物病原真菌表现出拮抗活性，并在盐农业条件下对番茄幼苗表现出显著的生长促进作用。

结论

盐沼中的 Trichoderma 属在具有假定不成熟微生物组的年轻土壤生态系统中发挥着天然生物防治的作用。

研究的意义和影响

盐土微生物组是耐盐生物效应物的丰富来源，可用于生物盐农业。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/5a130bdb7bba/JAM-130-179-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/4023455a97af/JAM-130-179-g001.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/358c7f92debb/JAM-130-179-g003.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/06d88c185de3/JAM-130-179-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/5a130bdb7bba/JAM-130-179-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/4023455a97af/JAM-130-179-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/f61f693478e8/JAM-130-179-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/358c7f92debb/JAM-130-179-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/95947b45fd32/JAM-130-179-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/9e2945f9a559/JAM-130-179-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/06d88c185de3/JAM-130-179-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a35b/7818382/5a130bdb7bba/JAM-130-179-g007.jpg

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