Interrelationships between Bacillus sp. CHEP5 and Bradyrhizobium sp. SEMIA6144 in the induced systemic resistance against Sclerotium rolfsii and symbiosis on peanut plants

• Published in: Journal of biosciences Vol. 39; no. 5; pp. 877 - 885
• Main Authors: Figueredo, María Soledad, Tonelli, María Laura, Taurian, Tania, Angelini, Jorge, Ibañez, Fernando, Valetti, Lucio, Muñoz, Vanina, Anzuay, María Soledad, Ludueña, Liliana, Fabra, Adriana
• Format: Journal Article
• Language: English
• Published: India Springer India 01.12.2014; Springer Nature B.V
• Subjects: Arachis - metabolism; Arachis - microbiology; Arachis hypogaea; Ascomycota - physiology; Bacillus; Bacillus - physiology; Bacteria; Biological control; Biological Control Agents; Biomedical and Life Sciences; Biomedicine; Bradyrhizobium; Bradyrhizobium - physiology; Cell Biology; Chlorophyll - metabolism; Crop yield; Disease Resistance; Enzymatic activity; Legumes; Life Sciences; Microbiology; Peanuts; Plant Diseases - microbiology; Plant growth; Plant resistance; Plant Roots - microbiology; Plant Sciences; Sclerotium rolfsii; Symbiosis; Zoology; induced systemic resistance; nodulation; peanut; plant growth promotion; Co-inoculation
• ISSN: 0250-5991; 0973-7138
• DOI: 10.1007/s12038-014-9470-8

Plant-growth-promoting bacteria are often used to enhance crop yield and for biological control of phytopathogens. Bacillus sp. CHEP5 is a biocontrol agent that induces systemic resistance (ISR) in Arachis hypogaea L. (peanut) against Sclerotium rolfsii , the causal agent of root and stem wilt. In this work, the effect of the co-inoculation of Bacillus sp. CHEP5 and the peanut nodulating strain Bradyrhizobium sp. SEMIA 6144 was studied on induction of both systemic resistance and nodulation processes. Bradyrhizobium sp. SEMIA 6144 did not affect the ability of Bacillus sp. CHEP5 to protect peanut plants from S. rolfsii by ISR and the priming in challenged-plants, as evidenced by an increment in phenylalanine ammonia-lyase enzyme activity. Additionally, the capacity of Bradyrhizobium sp. SEMIA 6144 to induce nodule formation in pathogen-challenged plants was improved by the presence of Bacillus sp. CHEP5.