Mycobiology.
2004 Mar;32(1):47-53.
Induction of Defense Related Enzymes and Pathogenesis Related Proteins in Pseudomonas fluorescens-Treated Chickpea in Response to Infection by Fusarium oxysporum f. sp. ciceri
- Affiliations
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- 1Laboratory of Applied Mycology, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi 221005, India.
- 2Glyco-Immunochemistry Research Laboratory, Institute of Molecular and Cellular Biology, College of Medicine, Chang-Gung University, Kwei-San, Tao-Yuan 333, Taiwan.
- 3Laboratory of Microbial Biotechnology, P G Department of Botany, SMMT P G College, Ballia 277 001, India.
- 4National Bureau of Agriculturally Important Microorganisms, NBPGR Old Building, Pusa Campus, New Delhi 110012, India. aroradilip@yahoo.co.in
- 5Department of Biology, Dongguk University, Seoul 100-715, Korea.
Abstract
- Pseudomonas fluorescens 1-94 induced systemic resistance in chickpea against Fusarium wilt of chickpea caused by Fusarium oxysporum f. sp. ciceri by the synthesis and accumulation of phenolic compounds, phenylalanine ammonia lyase(PAL) and pathogenesis related(PR) proteins(chitinase, beta-1,3-glucanase and peroxidase). Time-course accumulation of these enzymes in chickpea plants inoculated with P. fluorescens was significantly(LSD, P=0.05) higher than control. Maximum activities of PR-proteins were recorded at 3 days after inoculation in all induced plants; thereafter, the activity decreased progressively. Five PR peroxidases detected in induced chickpea plants. Molecular mass of these purified peroxidases was 20, 29, 43, 66 and 97 kDa. Purified peroxidases showed antifungal activity against plant pathogenic fungi.
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