In vivo biocontrol potential of Bacillus plant growth-promoting rhizobacteria against pectinolytic plant pathogens.

IF 2.4 4区生物学 Q3 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Folia microbiologica Pub Date : 2024-10-31 DOI:10.1007/s12223-024-01214-8

Asmaa Benaissa, Merdia Bestami, Kheira Fellan, Rokaia Benmalek

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Abstract

Bacillus is well known for producing a wide range of compounds that inhibit microbial phytopathogens. From this perspective, we were interested in evaluating the biocontrol potential of 5 plant growth-promoting rhizobacteria Bacillus species (PGPR-Bacillus) on 21 microbial pectinolytic plant pathogens isolated from previous studies. Phytopathogenicity and in vivo biocontrol potential of PGPR curative and preventive treatments were investigated from this angle. Overall, the pathogenicity test on healthy tomato, zucchini, and mandarin showed low rot to no symptoms for all PGPR strain culture treatments. Conversely, zucchini pre-treated with PGPR strains B. circulans and B. cereus for 72 h showed no signs of soft rot and remained healthy when in vitro contaminated with phytopathogens (Neisseria cinerea and Pichia anomala). Additionally, the PGPR-Bacillus strains were shown to be effective in mitigating the symptoms of soft rot in tomatoes, zucchini, and oranges using in vivo curative treatment. It is true that the majority of pectinolytic phytopathogenic strains exhibited antibiotic resistance. In vivo tests revealed that PGPR-Bacillus cell culture was effective against plant pathogens. Thus, PGPR-Bacillus can be considered a potential biocontrol agent for pectinolytic plant pathogens.

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促进植物生长根瘤菌对果胶溶解性植物病原体的体内生物防治潜力。

众所周知，芽孢杆菌能产生多种抑制微生物植物病原体的化合物。从这个角度出发，我们有兴趣评估 5 种植物生长促进根瘤菌芽孢杆菌（PGPR-Bacillus）对以往研究中分离出的 21 种微生物果胶溶植物病原体的生物防治潜力。从这个角度研究了 PGPR 治疗和预防方法的植物致病性和体内生物防治潜力。总体而言，在健康番茄、西葫芦和柑橘上进行的致病性试验表明，所有 PGPR 菌株培养处理的腐烂率都很低，甚至没有症状。相反，用 PGPR 菌株 B. circulans 和 B. cereus 预处理 72 小时的西葫芦没有出现软腐迹象，并且在体外受到植物病原体（Neisseria cinerea 和 Pichia anomala）污染时仍保持健康。此外，PGPR-芽孢杆菌菌株还能有效减轻西红柿、西葫芦和橘子的软腐症状。的确，大多数果胶溶植物病原菌菌株都具有抗生素抗性。体内试验显示，PGPR-芽孢杆菌细胞培养物对植物病原体有效。因此，PGPR-芽孢杆菌可被视为果胶溶解性植物病原体的潜在生物控制剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Folia microbiologica 工程技术-生物工程与应用微生物

CiteScore

5.80

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Unlike journals which specialize ever more narrowly, Folia Microbiologica (FM) takes an open approach that spans general, soil, medical and industrial microbiology, plus some branches of immunology. This English-language journal publishes original papers, reviews and mini-reviews, short communications and book reviews. The coverage includes cutting-edge methods and promising new topics, as well as studies using established methods that exhibit promise in practical applications such as medicine, animal husbandry and more. The coverage of FM is expanding beyond Central and Eastern Europe, with a growing proportion of its contents contributed by international authors.