The growth‐promoting effects of Bacillus amyloliquefaciens W82T‐44 on soybean and its biocontrol potential against soybean Phytophthora root rot

• Published in: Plant pathology 2024-12, Vol.73 (9), p.2429-2439
• Main Authors: Liu, Haixu, Zhang, Zhuoqun, Xu, Ying, Du, Xiuming, Wen, Jingzhi
• Format: Article
• Language: English
• Subjects: Ammonia; Bacillomycin; Bacillus amyloliquefaciens; Biological control; biological control agents; Biological effects; catechol oxidase; Cellulase; Chitinase; Disease control; Encystment; endo-1,4-beta-glucanase; Fermentation; Filtrate; filtrates; Genes; Germination; Mycelia; mycelium; oospores; Pathogenesis; Peroxidase; Phenylalanine; phenylalanine ammonia-lyase; Phytophthora; Phytophthora root rot; Phytophthora sojae; plant height; plant pathology; Polyphenol oxidase; proteinases; Rhizosphere; Root rot; siderophores; soil; Soil microorganisms; Soil resistance; Soil-borne diseases; soybean; Soybeans; Surfactin; zoospores
• ISSN: 0032-0862; 1365-3059
• DOI: 10.1111/ppa.13994

The most devastating soilborne disease of soybean is Phytophthora root rot (PRR) caused by Phytophthora sojae. Biological control has emerged as an effective method of reducing soilborne diseases. The present study isolated the bacterial strain W82T‐44 from the rhizosphere soil of a resistant soybean variety Williams 82. This strain was identified as Bacillus amyloliquefaciens and exhibited a 92.4% inhibition of mycelial growth of P. sojae. W82T‐44 produced cellulase, siderophore and protease and significantly promoted soybean growth. W82T‐44 treatment, compared to the negative control, was found to significantly (p