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来自中国的沉香属植物内生真菌对细菌和真菌病原体具有拮抗作用。

Endophytic Fungi Associated with (Agarwood) from China Show Antagonism against Bacterial and Fungal Pathogens.

作者信息

Du Tian-Ye, Karunarathna Samantha C, Zhang Xian, Dai Dong-Qin, Mapook Ausana, Suwannarach Nakarin, Xu Jian-Chu, Stephenson Steven L, Elgorban Abdallah M, Al-Rejaie Salim, Tibpromma Saowaluck

机构信息

Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing 655011, China.

Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand.

出版信息

J Fungi (Basel). 2022 Nov 14;8(11):1197. doi: 10.3390/jof8111197.

DOI:10.3390/jof8111197
PMID:36422018
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9697865/
Abstract

Agarwood is the most expensive non-construction wood product in the world. As a therapeutic agent, agarwood can cure some diseases, but few studies have been carried out on the antagonistic abilities of endophytic fungi associated with agarwood. Agarwood is mainly found in the genus . The objectives of this study are to understand the antimicrobial activities and their potential as biocontrol agents of the endophytic fungi of . First, fresh samples of were collected from Yunnan and Guangdong Provinces in 2020-2021, and the endophytic fungi were isolated and identified to genus level based on the phylogenetic analyses of the Internal Transcribed Spacer (ITS) region. In this bioassay, 47 endophytic strains were selected to check their bioactivities against three bacterial pathogens viz. and ; and three fungal pathogens viz. and . The antibiosis test was carried out by the dual culture assay (10 days), and among the 47 strains selected, 40 strains belong to 18 genera viz. , , , , , , , , , , , , , , , , , and one strain belongs to Xylariaceae had antimicrobial activities. In particular, sp. (YNA-D3) showed the inhibition of all the bacterial and fungal pathogens with a significant inhibition rate. In addition, the strains viz; sp. (GDA-3A9), sp. (GDA-2A1), sp. (YNA-D3), sp. (YNA-1C3), sp. (GDA-4C1), and sp. (YNA-1C1) showed significant antimicrobial activities and are considered worthy of further studies to identify individual fungal species and their bioactive compounds. This study enriches the diversity of endophytic fungi associated with agarwood, and their potential antagonistic effects against bacterial and fungal pathogens.

摘要

沉香是世界上最昂贵的非建筑木材产品。作为一种治疗剂，沉香可以治愈一些疾病，但对与沉香相关的内生真菌的拮抗能力的研究却很少。沉香主要存在于该属中。本研究的目的是了解内生真菌的抗菌活性及其作为生物防治剂的潜力。首先，于2020 - 2021年从云南和广东省采集新鲜样本，并基于内转录间隔区（ITS）区域的系统发育分析，将内生真菌分离并鉴定到属水平。在该生物测定中，选择了47株内生菌株，检测它们对三种细菌病原体即[具体细菌名称1]、[具体细菌名称2]和[具体细菌名称3]；以及三种真菌病原体即[具体真菌名称1]、[具体真菌名称2]和[具体真菌名称3]的生物活性。通过双培养测定（10天）进行抗菌试验，在所选择的47株菌株中，40株属于18个属，即[具体属名1]、[具体属名2]、[具体属名3]、[具体属名4]、[具体属名5]、[具体属名6]、[具体属名7]、[具体属名8]、[具体属名9]、[具体属名10]、[具体属名11]、[具体属名12]、[具体属名13]、[具体属名14]、[具体属名15]、[具体属名16]、[具体属名17]、[具体属名18]，还有一株属于炭角菌科的菌株具有抗菌活性。特别是，[具体菌种名]（YNA - D3）对所有细菌和真菌病原体均有抑制作用，抑制率显著。此外，[具体菌种名1]（GDA - 3A9）、[具体菌种名2]（GDA - 2A1）、[具体菌种名3]（YNA - D3）、[具体菌种名4]（YNA - 1C3）、[具体菌种名5]（GDA - 4C1）和[具体菌种名6]（YNA - 1C1）表现出显著的抗菌活性，被认为值得进一步研究以鉴定单个真菌物种及其生物活性化合物。本研究丰富了与沉香相关的内生真菌的多样性，以及它们对细菌和真菌病原体的潜在拮抗作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/f1f961f68d38/jof-08-01197-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/378f6a882e19/jof-08-01197-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/f7e52e21f6eb/jof-08-01197-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/c36feabf4370/jof-08-01197-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/f1f961f68d38/jof-08-01197-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/378f6a882e19/jof-08-01197-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/f7e52e21f6eb/jof-08-01197-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/c36feabf4370/jof-08-01197-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b360/9697865/f1f961f68d38/jof-08-01197-g004.jpg

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