Antagonistic Compounds Producing Plant Growth Promoting Rhizobacteria: A Tool for Management of Plant Disease
Journal Title: Journal of Advances in Microbiology - Year 2017, Vol 3, Issue 4
Abstract
Agriculture is facing struggle to meet the various confront of reducing plant diseases for an increasing world population food security. Great quantities of synthetic fertilizers and pesticides are required for high productivity which can damage ecosystem structures and functions, including the soil microbial community which plays an important role in agriculture sustainability. Soil is an excellent niche of growth of much plant growth promoting rhizobacteria. PGPR are naturally occurring soil bacteria that aggressively colonize in plant roots and play a vital role in crop protection, growth promotion and in the improvement of soil health. Scientific researchers involve multidisciplinary approaches to understand adaptation of PGPR, effects on plant physiology and growth induced systemic resistance, biocontrol of plant pathogens and biofertilization. The primary mechanism of biocontrol by PGPR involves the production of antibiotics such as carboxylic acid, 2,4-diacetyl phloroglucinoloomycin,pyoluteorin,pyrrolnitrin,kanosamine,zwittemycin-A and pantocin. A cascade of endogenous signals such as sensor kinases, N-acyl homoserine lactones and sigma factors regulates the synthesis of antibiotics. Some of these antibiotics have broad spectrum against many plant pathogens like fungi, viruses and bacteria, affecting crop plants. These antibiotics also serve as determinants in triggering induced systemic resistance (ISR) in the plant system.
Authors and Affiliations
Himanshu Singh, Vishakha Jaiswal, Siddhi Singh, S. P. Tiwari, Bharti Singh, Deepmala Katiyar
Keywords
Related Articles
- EP ID EP338181
- DOI 10.9734/JAMB/2017/33368
- Views 86
- Downloads 0
Screening a Saliva Repository for Scardovia wiggsiae and Streptococcus mutans: A Pilot Study
Introduction: Many studies have evaluated the prevalence of cariogenic pathogens among dental school patients, most notably the Gram-positive organism Streptococcus mutans (SM). Recent evidence has suggested another cari...
Virulence Characteristics and Public Health Significance of Bacteria Isolated from University of Ibadan Libraries
Aims: To verify the possibility of isolating virulent microorganisms from books and indoor air in University of Ibadan libraries and to investigation the virulent characteristics and antibiotics sensitivities of these mi...
Bacteriological Quality Assessment of Bottled Water Brands Marketed in Kitale Town, Trans- Nzoia County, Kenya
Background: Consumption of bottled water is increasing rapidly in developing countries as it is generally perceived to be pure, clean and of good quality. This has led to the sale of different brands of bottled water in...
RpoB Gene-Based Characterization of Non-Tuberculous Mycobacteria in Zimbabwe
Aims: To characterize archived nontuberculous Mycobacteria (NTM) samples previously isolated from humans across Zimbabwe during the 2014 national tuberculosis survey. The rpoB gene of the isolates was targeted for charac...
Utilization Potential of Kitchen Waste Sludge as Organic Fertilizer
Aim: To investigate the possible conversion of kitchen waste sludge into organic fertilizer using a bio-treatment agent. Place and Duration of Study: The study was carried out at Afe Babalola University in the green hous...