|Table of Contents|

Plant Growth Promoting Rhizobacteria CS2-6 for Soil Regulation and Control of Pepper Wilting Disease

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2026年7
Page:
106-116
Research Field:
Publishing date:

Info

Title:
Plant Growth Promoting Rhizobacteria CS2-6 for Soil Regulation and Control of Pepper Wilting Disease
Author(s):
HAO Yu1; MENG Yang1; ZHAO Linlin1; XIAO Yi2
(1.School of Agriculture and Engineering，Nanyang Vocational College of Agriculture，Nanyang,Henan 473000；2.College of Information and Intelligence，Hunan Agricultural University，Changsha，Hunan 410128)
Keywords:
plant growth promoting rhizobacteria; Stenotrophomonas pavanii; Fusarium capsicum wilt; soil enzymes; soil nutrients; soil microorganism
PACS:
S436.418
DOI:
10.11937/bfyy.20253503
Abstract:
Taking pepper as test materials，flat plate confrontation and pot experiments were conducted to explore the optimal cultivation conditions of plant rhizosphere growth promoting rhizobacteria CS2-6，its control effect on pepper wilt disease，and its effects on soil microbial content，soil enzyme activity，and soil nutrient content，in order to provide reference for biological control of pepper wilt disease.The results showed that CS2-6 had a significant inhibitory effect on Fusarium oxysporum f.sp.capsicum (FOC)，the pathogen of pepper wilt disease；orthogonal experiment found that the optimal carbon source for CS2-6 cultivation was soluble starch (2% concentration)，the optimal nitrogen source was beef paste (2% concentration)，and the optimal pH was 7.The inhibition rate of strain CS2-6 on FOC spore production reached 65.4%，and the highest inhibition rate on FOC spore germination was 89.2%.Identified as Stenotrophomonas pavanii through colony morphology and 16S rRNA analysis.The pot experiment found that CS2-6 had the best control effect on pepper wilt disease at 77.7%，significantly higher than the control effect under 50% benomyl treatment (60.0%).Under FOC+CS2-6 treatment，CS2-6 has a certain colonization ability in both pepper roots and rhizosphere soil.After 15 days of treatment，the colonization amounts in roots and rhizosphere soil reached 5.5×104 cfu·g-1 and 11.1×104 cfu·g-1，respectively.In addition，compared with FOC treatment，FOC+CS2-6 treatment significantly increased the number of bacteria and actinomycetes in pepper rhizosphere soil，reduced the number of fungi，and increased the activities of urease，acid phosphatase，sucrase，catalase，cellulase，and β-glucosidase in pepper rhizosphere soil by 36.6%，28.3%，17.9%，126.5%，67.5%，and 79.6%，respectively.The content of available nitrogen，available phosphorus，and available potassium in soil increased by 55.4%，158.2%，and 52.9%，respectively.The conclusion was that the oligotrophic bacterium CS2-6 had a significant inhibitory effect on FOC and had good control effect on fusarium capsicum wilt，with certain market development prospects.

References:

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Last Update: 2026-04-14