Journal ArticleDOI
Role of microorganisms in adaptation of agriculture crops to abiotic stresses
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In this article, the authors exploit the properties of microorganisms such as their unique properties of tolerance to extremities, their ubiquity, genetic diversity, their interaction with crop plants and develop methods for their successful deployment in agriculture production.Abstract:
Increased incidences of abiotic and biotic stresses impacting productivity in principal crops are being witnessed all over the world. Extreme events like prolonged droughts, intense rains and flooding, heat waves and frost damages are likely to further increase in future due to climate change. A wide range of adaptations and mitigation strategies are required to cope with such impacts. Efficient resource management and crop/livestock improvement for evolving better breeds can help to overcome abiotic stresses to some extent. However, such strategies being long drawn and cost intensive, there is a need to develop simple and low cost biological methods for the management of abiotic stress, which can be used on short term basis. Microorganisms could play a significant role in this respect, if we can exploit their unique properties of tolerance to extremities, their ubiquity, genetic diversity, their interaction with crop plants and develop methods for their successful deployment in agriculture production. Besides influencing the physico-chemical properties of rhizospheric soil through production of exopolysaccharides and formation of biofilm, microorganisms can also influence higher plants response to abiotic stresses like drought, chilling injury, salinity, metal toxicity and high temperature, through different mechanisms like induction of osmo-protectants and heat shock proteins etc. in plant cells. Use of these microorganisms per se can alleviate stresses in crop plants thus opening a new and emerging application in agriculture. These microbes also provide excellent models for understanding the stress tolerance, adaptation and response mechanisms that can be subsequently engineered into crop plants to cope with climate change induced stresses.read more
Citations
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Book
Role of Rhizospheric Microbes in Soil
TL;DR: There is an urgent need for an ecologically compatible, environment-friendly technique in agriculture system that might be able to provide adequate supply of essential nutrients for the alarming growing rate of human populations through qualitative and quantitative improvement of agricultural products.
Book ChapterDOI
Salinity: A Major Agricultural Problem—Causes, Impacts on Crop Productivity and Management Strategies
Abdul Majeed,Zahir Muhammad +1 more
TL;DR: In this paper, the problem emerges when the concentration of Na+, Cl−, and ions of other allied salts exceeds in soil than standard levels, which primarily disturbs the osmotic functions and then consequently alters several metabolic activities required for normal growth and development of plants.
Journal ArticleDOI
Role of Plant Growth-Promoting Rhizobacteria (PGPR), Biochar, and Chemical Fertilizer under Salinity Stress
Aliya Fazal,Asghari Bano +1 more
TL;DR: In this article, the role of biochar, phosphate-solubilizing rhizobacteria (Pseudomonas sp.), and chemical fertilizer under induced salt stress (150mM sodium chloride (NaCl)) was evaluated in a growth chamber with 14h photoperiod at 22/26°C.
Journal ArticleDOI
The role of endophytes in secondary metabolites accumulation in medicinal plants under abiotic stress
TL;DR: The interaction between endophytes and their medicinal plant host under abiotic stress is examined to examine the symbiotic relationship between medicinal plants and theirendophytes.
Journal ArticleDOI
Plant-assisted selection: a promising alternative for in vivo identification of wheat (Triticum turgidum L. subsp. Durum) growth promoting bacteria
Brenda Valenzuela-Aragon,Fannie Isela Parra-Cota,Gustavo Santoyo,Guillermo Luis Arellano-Wattenbarger,Sergio de los Santos-Villalobos +4 more
TL;DR: PAS is an easy and feasible in vivo alternative for identification of PGPB, showing strong wheat growth promotion events compared with those strains obtained by MTS, but ecological and economic factors need to be investigated to use the obtained strains by PAS for commercial microbial inoculants formulations.
References
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Journal ArticleDOI
Organic matter and water-stable aggregates in soils
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TL;DR: In this article, the effectiveness of various binding agents at different stages in the structural organization of aggregates is described and forms the basis of a model which illustrates the architecture of an aggregate.
Journal ArticleDOI
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TL;DR: This review restricts itself to bacteria that are derived from and exert this effect on the root and generally designated as PGPR (plant-growth-promoting rhizobacteria), which can be direct or indirect in their effects on plant growth.
Journal ArticleDOI
Hydroxyl radical scavenging activity of compatible solutes
TL;DR: Of the compatible solutes tested, sorbitol, mannitol, myo-inositol and proline were effective hydroxyl radical scavengers and Glycinebetaine was ineffective.
Journal ArticleDOI
Rhizobium-Legume Symbiosis and Nitrogen Fixation under Severe Conditions and in an Arid Climate
TL;DR: The Rhizobium-legume (herb or tree) symbiosis is suggested to be the ideal solution to the improvement of soil fertility and the rehabilitation of arid lands and is an important direction for future research.
Journal ArticleDOI
Rhizosphere bacteria help plants tolerate abiotic stress
TL;DR: PGPR might also increase nutrient uptake from soils, thus reducing the need for fertilizers and preventing the accumulation of nitrates and phosphates in agricultural soils, and reduce the effects of water contamination from fertilizer run-off and lead to savings for farmers.