Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungus

Fusarium oxysporum f. sp. cubense tropical race 4 (FocTR4) is a devastating phytopathogen responsible for significant losses in banana production worldwide. Trichoderma and other biocontrol agents (BCAs) have been used as suitable disease control methods for banana Fusarium wilt. In this study, the...

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Main Authors: Mei Luo, Yue Chen, Qiurong Huang, Zhenxin Huang, Handa Song, Zhangyong Dong
Format: Article
Language:English
Published: Frontiers Media S.A. 2023-11-01
Series:Frontiers in Microbiology
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmicb.2023.1301062/full
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author Mei Luo
Mei Luo
Yue Chen
Qiurong Huang
Zhenxin Huang
Handa Song
Handa Song
Zhangyong Dong
Zhangyong Dong
author_facet Mei Luo
Mei Luo
Yue Chen
Qiurong Huang
Zhenxin Huang
Handa Song
Handa Song
Zhangyong Dong
Zhangyong Dong
author_sort Mei Luo
collection DOAJ
description Fusarium oxysporum f. sp. cubense tropical race 4 (FocTR4) is a devastating phytopathogen responsible for significant losses in banana production worldwide. Trichoderma and other biocontrol agents (BCAs) have been used as suitable disease control methods for banana Fusarium wilt. In this study, the endophytic T. koningiopsis Tk905 strain was isolated from the roots of dendrobe plants and identified utilizing morphological and molecular analyses. Antifungal activity tests revealed that Tk905 effectively inhibited mycelial growth with inhibition rates ranging from 26.52 to 75.34%. Additionally, Tk905 covered the pathogen mycelia, and spores were observed on or around the pathogen hyphae. The average root and shoot fresh weights and plant height, of Tk905-inoculated plants were significantly higher than those of the untreated plants. Furthermore, Tk905 treatment significantly increased the activity of antioxidant enzymes, such as catalase (CAT), phenylalanine ammonia-lyase (PAL), polyphenol oxidase (PPO), and peroxidase (POD), suggesting that Tk905 may enhance plant defence systems by activating their antioxidant mechanisms. Most importantly, Tk905-treated plants inoculated by three methods exhibited significantly lower disease incidence and severity than untreated plants. The protective effects of Tk905 against FocTR4 infection were not only observed in the early stages of infection but persisted throughout the experiment, suggesting that T. koningiopsis Tk905 can provide long-lasting protection against Fusarium wilt.
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spelling doaj.art-8e660f435b384ae09b382cf7a3d0edc32023-11-07T10:07:10ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2023-11-011410.3389/fmicb.2023.13010621301062Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungusMei Luo0Mei Luo1Yue Chen2Qiurong Huang3Zhenxin Huang4Handa Song5Handa Song6Zhangyong Dong7Zhangyong Dong8Innovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, ChinaKey laboratory of Fruit and Vegetable Green Prevention and Control in South-China, Ministry of Agriculture and Rural Affairs, Guangzhou, ChinaInnovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, ChinaInnovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, ChinaInnovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, ChinaInnovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, ChinaKey laboratory of Fruit and Vegetable Green Prevention and Control in South-China, Ministry of Agriculture and Rural Affairs, Guangzhou, ChinaInnovative Institute for Plant Health, Zhongkai University of Agriculture and Engineering, Guangzhou, ChinaKey laboratory of Fruit and Vegetable Green Prevention and Control in South-China, Ministry of Agriculture and Rural Affairs, Guangzhou, ChinaFusarium oxysporum f. sp. cubense tropical race 4 (FocTR4) is a devastating phytopathogen responsible for significant losses in banana production worldwide. Trichoderma and other biocontrol agents (BCAs) have been used as suitable disease control methods for banana Fusarium wilt. In this study, the endophytic T. koningiopsis Tk905 strain was isolated from the roots of dendrobe plants and identified utilizing morphological and molecular analyses. Antifungal activity tests revealed that Tk905 effectively inhibited mycelial growth with inhibition rates ranging from 26.52 to 75.34%. Additionally, Tk905 covered the pathogen mycelia, and spores were observed on or around the pathogen hyphae. The average root and shoot fresh weights and plant height, of Tk905-inoculated plants were significantly higher than those of the untreated plants. Furthermore, Tk905 treatment significantly increased the activity of antioxidant enzymes, such as catalase (CAT), phenylalanine ammonia-lyase (PAL), polyphenol oxidase (PPO), and peroxidase (POD), suggesting that Tk905 may enhance plant defence systems by activating their antioxidant mechanisms. Most importantly, Tk905-treated plants inoculated by three methods exhibited significantly lower disease incidence and severity than untreated plants. The protective effects of Tk905 against FocTR4 infection were not only observed in the early stages of infection but persisted throughout the experiment, suggesting that T. koningiopsis Tk905 can provide long-lasting protection against Fusarium wilt.https://www.frontiersin.org/articles/10.3389/fmicb.2023.1301062/fullTrichoderma koningiopsissoil-borne diseaseinduced resistanceplant-growth promotingbiocontrol
spellingShingle Mei Luo
Mei Luo
Yue Chen
Qiurong Huang
Zhenxin Huang
Handa Song
Handa Song
Zhangyong Dong
Zhangyong Dong
Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungus
Frontiers in Microbiology
Trichoderma koningiopsis
soil-borne disease
induced resistance
plant-growth promoting
biocontrol
title Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungus
title_full Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungus
title_fullStr Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungus
title_full_unstemmed Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungus
title_short Trichoderma koningiopsis Tk905: an efficient biocontrol, induced resistance agent against banana Fusarium wilt disease and a potential plant-growth-promoting fungus
title_sort trichoderma koningiopsis tk905 an efficient biocontrol induced resistance agent against banana fusarium wilt disease and a potential plant growth promoting fungus
topic Trichoderma koningiopsis
soil-borne disease
induced resistance
plant-growth promoting
biocontrol
url https://www.frontiersin.org/articles/10.3389/fmicb.2023.1301062/full
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