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
Fatty Acid Methyl Ester Analysis of Olive Oil Degraded by Pseudomonas fluorescens
Fatty acids are the major components of lipids; and the physical, chemical and physiological properties of a lipid class depend primarily on its fatty acid composition. Gas chromatography method can be used for the ident...
Comparative Evaluation of Methicillin-resistant Staphylococcus aureus (MRSA) Isolates from Hospital and Community Settings in Nigeria
The ability of Staphylococcus aureus to resist cefoxitin amongst other antibiotics has made it a significant public health problem in hospital and community settings. In this study, the occurrence of cefoxitin (methicill...
Influence of Bradyrhizobium and Mycorrhiza on Growth, Yield and Phosphorus Use Efficiency on Soybean under Manure Application
A field experiment was conducted at the Federal University of Agriculture, Abeokuta, South West Nigeria, to determine the influence of Bradyrhizobium and mycorrhiza on growth, yield and phosphorus use efficiency of soybe...
Antibiotic Susceptibility and Plasmid Profile of Escherichia coli from Door Handles in Two Tertiary Institutions in Nasarawa State, Nigeria
Aim: This study is aimed at isolation, antibiotic susceptibility and plasmid study of Escherichia coli isolates from door handles in the study location. Study Design: Cross-sectional study. Place and Duration of Study: T...
In vivo Studies of Antiviral Effect of Tetrapleura tetraptera Extracts on Newcastle Disease Virus
Newcastle disease (ND) is an economically important disease of poultry. Vaccination had been the only way of prevention in Nigeria and indeed many countries of the world. Possible therapy is presently lacking. Drugs deve...