Bioprospecting of Plant-Beneficial Bacillus Species for Growth Promotion and Disease Suppression
Ruth Meike Jayanti, Ike Marisna, Jilan Tsani Abdullah, Suryanti, Tri Joko
TL;DR
This study identifies two Bacillus species that can promote plant growth and reduce disease in shallots.
Contribution
The study identifies and validates two Bacillus isolates with plant growth promotion and disease suppression potential.
Findings
Bacillus isolates B-27 and RC76 showed plant-beneficial traits in laboratory and field tests.
Combined treatment with B. velezensis B-27 and B. tropicus RC76 increased plant height and leaf number.
B. velezensis B-27 reduced twisted disease intensity in shallots when applied by spraying.
Abstract
Plant growth-promoting bacteria (PGPB) have been reported to promote plant growth and protect against plant diseases effectively. PGPB can control plant diseases through direct and indirect mechanisms. The direct mechanism involves the ability to provide nutrients and phytohormones. In contrast, the indirect mechanism refers to the ability to suppress the activity of pathogens through the production of various compounds and metabolites. The purpose of this study is to evaluate the plant health-promoting potential of Bacillus species. Several genetic determinants in 18 isolates of PGPB were investigated via polymerase chain reaction based on the genes fenD, sfp, bamC, ituA, aiiA, ipdC and nifH. Plant-beneficial traits were confirmed through seedling growth tests and in vitro antagonistic assays in the laboratory, followed by a field experiment that used selected Bacillus isolates to…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
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Taxonomy
TopicsPlant-Microbe Interactions and Immunity · Plant tissue culture and regeneration · Nematode management and characterization studies