title: Interrelationships between Bacillus sp. CHEP5 and Bradyrhizobium sp. SEMIA6144 in the induced systemic resistance against Sclerotium rolfsii and symbiosis on peanut plants.
abstract: 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.
authors.affiliation: Departamento de Ciencias Naturales, Facultad de Ciencias Exactas, Fisico-quimicas y Naturales, Universidad Nacional de Rio Cuarto, Agencia Postal 3, 5800 Rio Cuarto, Cordoba, Argentina.
authors.forename: Maria Soledad
authors.initials: MS
authors.lastname: Figueredo
authors.forename: Maria Laura
authors.initials: ML
authors.lastname: Tonelli
authors.forename: Tania
authors.initials: T
authors.lastname: Taurian
authors.forename: Jorge
authors.initials: J
authors.lastname: Angelini
authors.forename: Fernando
authors.initials: F
authors.lastname: Ibanez
authors.forename: Lucio
authors.initials: L
authors.lastname: Valetti
authors.forename: Vanina
authors.initials: V
authors.lastname: Munoz
authors.forename: Maria Soledad
authors.initials: MS
authors.lastname: Anzuay
authors.forename: Liliana
authors.initials: L
authors.lastname: Luduena
authors.forename: Adriana
authors.initials: A
authors.lastname: Fabra
mesh_terms: D010367:Arachis / Q000378:metabolism / Q000382:microbiology*; D001203:Ascomycota / Q000502:physiology*; D001407:Bacillus / Q000502:physiology*; D061046:Biological Control Agents; D020369:Bradyrhizobium / Q000502:physiology*; D002734:Chlorophyll / Q000378:metabolism; D060467:Disease Resistance; D010935:Plant Diseases / Q000382:microbiology; D018517:Plant Roots / Q000382:microbiology; D013559:Symbiosis
chemical_list: D061046:Biological Control Agents; D002734:Chlorophyll