Induction of resistance against Cercospora leaf spot in safflower by seed treatment with plant growth-promoting rhizobacteria

Govindappa, M. and Rai, V. Ravishankar and Lokesh, S. (2014) Induction of resistance against Cercospora leaf spot in safflower by seed treatment with plant growth-promoting rhizobacteria. Archives Of Phytopathology And Plant Protection, Archives Of Phytopathology And Plant Protection. pp. 1-14. ISSN 0323-5408

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Official URL: http://dx.doi.org/10.1080/03235408.2014.880574

Abstract

Out of seven isolates of rhizobacteria, four strains including GBO-3, INR937a, INR937b and IPC-11 were selected as inducers of systemic resistance against Cercospora carthami and tested individually for biological control of different important seed-borne fungal pathogens. The level of control achieved by each rhizobacterium varied with the pathosystem studied. The isolates GBO-3, INR937a, INR937b and IPC-11 exhibited reduced disease intensity in terms of average number of leaf lesions as compared to untreated control in protection experiments against C. carthami. Micromobilised with rhizobacterium GBO-3, INR937a, INR937b and IPC-11 safflower seeds were grown under greenhouse and challenge inoculated with C. carthami were selected for estimation of lipoxygenase, polyphenylalanine ammonia-lyase, peroxidase, polyphenol oxidase and ?-1,3 glucanase activities were estimated spectrophotometrically. Increase in all enzymes was detected in foliar extracts from plants at different stages after challenge inoculation.Out of seven isolates of rhizobacteria, four strains including GBO-3, INR937a, INR937b and IPC-11 were selected as inducers of systemic resistance against Cercospora carthami and tested individually for biological control of different important seed-borne fungal pathogens. The level of control achieved by each rhizobacterium varied with the pathosystem studied. The isolates GBO-3, INR937a, INR937b and IPC-11 exhibited reduced disease intensity in terms of average number of leaf lesions as compared to untreated control in protection experiments against C. carthami. Micromobilised with rhizobacterium GBO-3, INR937a, INR937b and IPC-11 safflower seeds were grown under greenhouse and challenge inoculated with C. carthami were selected for estimation of lipoxygenase, polyphenylalanine ammonia-lyase, peroxidase, polyphenol oxidase and ?-1,3 glucanase activities were estimated spectrophotometrically. Increase in all enzymes was detected in foliar extracts from plants at different stages after challenge inoculation.

Item Type: Article
Additional Information: Unmapped bibliographic data: M3 - doi: 10.1080/03235408.2014.880574 [Field not mapped to EPrints] JO - Archives Of Phytopathology And Plant Protection [Field not mapped to EPrints]
Subjects: Agriculture Biological Sciences > Microbiology
University of Mysore > PG Campuses > Manasagangotri, Mysore > Agriculture Biological Sciences > Microbiology
Divisions: PG Campuses > Manasagangotri, Mysore > Microbiology
Depositing User: Praveen Kumari B.L
Date Deposited: 18 Jun 2014 07:38
Last Modified: 18 Jun 2014 07:38
URI: http://eprints.uni-mysore.ac.in/id/eprint/16921

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