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

Journal of biosciences

Fernando Ibañez¹  María Laura Tonellie¹  Vanina Muñoz¹  Adriana Fabra1¹  Liliana Ludueña¹  Tania Taurian¹  Marí­a Soledad Figueredo¹  Jorge Angelini¹  Marí­a Soledad Anzuay¹  Lucio Valetti¹ 

[1] Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Físico-quimicas y Naturales, Universidad Nacional de Río Cuarto, Agencia Postal 3, 5800 Río Cuarto, Córdoba, Argentina$$

关键词: Co-inoculation;    induced systemic resistance;    nodulation;    peanut;    plant growth promotion;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

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.

【 授权许可】

Unknown