Isolation and Characterization of Novel Biological Control Agent Against

Overview

Journal Biology (Basel)

Publisher MDPI

Specialty Biology

Date 2022 Dec 23

PMID 36552234

Authors

Xinglong Lian

Shuang Liu

Lanyuwen Jiang

Xinyu Bai

Yuanyuan Wang

Affiliations

Soon will be listed here.

Abstract

One of the most severe soil-borne pathogens in the world is the root-knot nematode (Meloidogyne incognita). Biological control is gaining more importance as environmental awareness increases. Thus, keeping this in mind, a total of 712 bacterial strains were isolated from 117 rhizosphere soil samples and investigated for potential biological control activity against M. incognita. Strain Sneb518 (Clostridium beijerinckii) was identified as having solid biocontrol activity against M. incognita. Sneb518 demonstrated significant inhibition against M. incognita, with J2 mortality reaching 90.73% at 12 h and with eggs hatching at a rate of 6.00% at 24 h, compared to a hatchability level of 29.07% for the control. Additionally, Sneb518 was excellent for enhancing seed germination. The seeds coated with a fermentation broth containing Sneb518 efficiently boosted the germination rate to 88.49%. The effectiveness and stability of C. beijerinckii Sneb518 against M. incognita were then further evaluated in a greenhouse. According to the pot experiment data, Sneb518 considerably (p < 0.05) reduced the number of root galls and egg masses on roots and also significantly (p < 0.05) increased tomato plant growth. C. beijerinckii Sneb518-treated tomato seedlings exhibited 50.26% biocontrol effectiveness compared to the control group. Our results demonstrate that C. beijerinckii Sneb518 can be a potential biological control agent against root-knot nematode disease and a biomass enhancer. This research will give new options for the sustainable control of root-knot nematode disease in tomatoes and other host plants.

Citing Articles

Influence of medium modifications (optimization) on high nematicidal activity of the fermentation broth of .

Liu S, Zhang K, Yu Y, Lian X, Jiang L, Meng F Front Bioeng Biotechnol. 2024; 11:1283112.

PMID: 38239919 PMC: 10795176. DOI: 10.3389/fbioe.2023.1283112.

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