Characterization of heat resistant mutant strains of Rhizobium sp. [Cajanus] for growth, survival and symbiotic properties

Nehra, Kiran; Yadav, A. S.; Sehrawat, Anita R.; Vashishat, Rajni

doi:10.1007/s12088-007-0060-4

Cited by 17 publications

(9 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“… Rahmani et al (2009) established that heat tolerance in Bradyrhizobium directly affects the symbiotic efficiency between Bradyrhizobium and the soybean host. All stages of legume–rhizobium symbiosis are susceptible to high temperature ( Hungria and Vargas, 2000 ; Nehra et al, 2007 ; Yadav and Nehra, 2013 ). Hungria and Franco (1993) , studied the effect of high-temperature exposure on nodulation and efficiency of N 2 fixation in common beans; under high-temperature treatment (35 and 38°C/8 h/day), nodules formed but were inefficient at N 2 fixation.…”

Section: Physiological Responsesmentioning

confidence: 99%

Food Legumes and Rising Temperatures: Effects, Adaptive Functional Mechanisms Specific to Reproductive Growth Stage and Strategies to Improve Heat Tolerance

et al. 2017

View full text Add to dashboard Cite

Ambient temperatures are predicted to rise in the future owing to several reasons associated with global climate changes. These temperature increases can result in heat stress- a severe threat to crop production in most countries. Legumes are well-known for their impact on agricultural sustainability as well as their nutritional and health benefits. Heat stress imposes challenges for legume crops and has deleterious effects on the morphology, physiology, and reproductive growth of plants. High-temperature stress at the time of the reproductive stage is becoming a severe limitation for production of grain legumes as their cultivation expands to warmer environments and temperature variability increases due to climate change. The reproductive period is vital in the life cycle of all plants and is susceptible to high-temperature stress as various metabolic processes are adversely impacted during this phase, which reduces crop yield. Food legumes exposed to high-temperature stress during reproduction show flower abortion, pollen and ovule infertility, impaired fertilization, and reduced seed filling, leading to smaller seeds and poor yields. Through various breeding techniques, heat tolerance in major legumes can be enhanced to improve performance in the field. Omics approaches unravel different mechanisms underlying thermotolerance, which is imperative to understand the processes of molecular responses toward high-temperature stress.

show abstract

Section: Physiological Responsesmentioning

confidence: 99%

Food Legumes and Rising Temperatures: Effects, Adaptive Functional Mechanisms Specific to Reproductive Growth Stage and Strategies to Improve Heat Tolerance

et al. 2017

View full text Add to dashboard Cite

show abstract

“…It plays an important role in increasing yield by converting atmospheric nitrogen into usable forms [ 36 ]. Being resistant to different temperature ranges Rhizobium normally enters the root hairs, multiplies there and forms nodules [ 37 ]. Rhizobium inoculants in different locations and soil types were reported to significantly increase the grain yields of bengal gram [ 38 ], lentil [ 39 ], pea, alfalfa and sugar beet rhizosphere [ 40 ], berseem [ 41 ], ground nut [ 36 ] and soybean [ 42 ].…”

Section: Introductionmentioning

confidence: 99%

Biofertilizers function as key player in sustainable agriculture by improving soil fertility, plant tolerance and crop productivity

et al. 2014

View full text Add to dashboard Cite

Current soil management strategies are mainly dependent on inorganic chemical-based fertilizers, which caused a serious threat to human health and environment. The exploitation of beneficial microbes as a biofertilizer has become paramount importance in agriculture sector for their potential role in food safety and sustainable crop production. The eco-friendly approaches inspire a wide range of application of plant growth promoting rhizobacteria (PGPRs), endo- and ectomycorrhizal fungi, cyanobacteria and many other useful microscopic organisms led to improved nutrient uptake, plant growth and plant tolerance to abiotic and biotic stress. The present review highlighted biofertilizers mediated crops functional traits such as plant growth and productivity, nutrient profile, plant defense and protection with special emphasis to its function to trigger various growth- and defense-related genes in signaling network of cellular pathways to cause cellular response and thereby crop improvement. The knowledge gained from the literature appraised herein will help us to understand the physiological bases of biofertlizers towards sustainable agriculture in reducing problems associated with the use of chemicals fertilizers.

show abstract

“…High soil temperatures in tropical and subtropical climates are a major problem for BNF because it can affect N 2 fixation. Critical temperatures for N 2 fixation are around 35ºC -40ºC (Nehra et al, 2007, Yadav & Nehra, 2013…”

Section: Introductionmentioning

confidence: 99%

Nodulation, gas exchanges and production of peanut cultivated with Bradyrhizobium in soils with different textures

et al. 2016

View full text Add to dashboard Cite

Nitrogen fertilization from biological source is an uncommon practice for peanut growers due to the limited results, mainly in environments with water restriction. In this study, the response of a commercial Bradyrhizobium was evaluated on the nodulation and production of peanuts grown in sandy and medium textured soils. Two experiments using different soils were carried out in the field during the dry season, in Campina Grande, Paraíba State, Brazil. Three peanut genotypes were submitted to the following treatments: 1-no nitrogen fertilization (control), 2- chemical fertilization (ammonium sulfate) and 3- inoculation with Bradyrhizobium [commercial strain BR 1405 (SEMIA 6144)]. A completely randomized 3x3 factorial design was adopted with five repetitions for both experiments. The evaluates variables were: height of the main stem, number of nodes/plant, root length, root dry weight, weight of pods/plant and number of pods/plant. In addition, gas exchanges were estimated using IRGA apparatus. Both genotypes (BRS Havana and L7 Bege) were benefited in relation to production due to an inoculation with SEMIA 6144. No physiological response was verified in genotypes or N-treatments to gas exchange, excepting for the Ci/Ca ratio in the medium textured soil experiment. BRS Havana showed low Ci/Ca ratio in Bradyrhizobium treatment, indicating that SEMIA 6144 improved the plants photosynthetic efficiency.

show abstract

Characterization of heat resistant mutant strains of Rhizobium sp. [Cajanus] for growth, survival and symbiotic properties

Cited by 17 publications

References 20 publications

Food Legumes and Rising Temperatures: Effects, Adaptive Functional Mechanisms Specific to Reproductive Growth Stage and Strategies to Improve Heat Tolerance

Food Legumes and Rising Temperatures: Effects, Adaptive Functional Mechanisms Specific to Reproductive Growth Stage and Strategies to Improve Heat Tolerance

Biofertilizers function as key player in sustainable agriculture by improving soil fertility, plant tolerance and crop productivity

Nodulation, gas exchanges and production of peanut cultivated with Bradyrhizobium in soils with different textures

Contact Info

Product

Resources

About