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Plant growthpromoting rhizobia:challenges andopportunities Subramaniam GopalakrishnanArumugam SathyaRajendran Vijayabharathi2014 год

Plant growth promoting rhizobia: challenges and opportunities
review

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Аннотация: Modern agriculture faces challenges, such as loss of soil fertility, fluctuating climatic factors and increasing pathogen and pest attacks. Sustainability and environmental safety of agricultural production relies on eco-friendly approaches like biofertilizers, biopesticides and crop residue return. The multiplicity of beneficial effects of microbial inoculants, particularly plant growth promoters (PGP), emphasizes the need for further strengthening the research and their use in modern agriculture. PGP inhabit the rhizosphere for nutrients from plant root exudates. By reaction, they help in (1) increased plant growth through soil nutrient enrichment by nitrogen fixation, phosphate solubilization, siderophore production and phytohormones production (2) increased plant protection by influencing cellulase, protease, lipase and β-1,3 glucanase productions and enhance plant defense by triggering induced systemic resistance through lipopolysaccharides, flagella, homoserine lactones, acetoin and butanediol against pests and pathogens. In addition, the PGP microbes contain useful variation for tolerating abiotic stresses like extremes of temperature, pH, salinity and drought; heavy metal and pesticide pollution. Seeking such tolerant PGP microbes is expected to offer enhanced plant growth and yield even under a combination of stresses. This review summarizes the PGP related research and its benefits, and highlights the benefits of PGP rhizobia belonging to the family Rhizobiaceae, Phyllobacteriaceae and Bradyrhizobiaceae.
Год издания: 2014
Авторы: Subramaniam Gopalakrishnan, Arumugam Sathya, Rajendran Vijayabharathi, Rajeev K. Varshney, C. L. L. Gowda, L. Krishnamurthy
Издательство: Springer Science+Business Media
Источник: 3 Biotech
Ключевые слова: Legume Nitrogen Fixing Symbiosis, Plant-Microbe Interactions and Immunity, Nematode management and characterization studies
Другие ссылки: 3 Biotech (PDF)
3 Biotech (HTML)
PubMed Central (HTML)
PubMed (HTML)