Alleviation of Salinity Stress Effects in Forage Cowpea (Vigna unguiculata L.) by Bradyrhizobium sp. Inoculation

Omara, Alaa El-Dein; El-Gaafarey, Tamer G.

doi:10.9734/mrji/2018/40727

Cited by 6 publications

(9 citation statements)

References 37 publications

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“…Also, all strains were able to grow in all tested PEG concentrations at up to 25%. Therefore, T. harzianum was the most tolerant to higher applied PEG 6000 concentrations compared to the other Trichoderma strains and these results may be due to an alteration of synthesis patterns of lipopolysaccharides and protein subjected to adaptation of drought stress [28][29][30]. (Fig.…”

Section: Discussionmentioning

confidence: 95%

Biocompatibility Effect of Bradyrhizobium japonicum and Trichoderma Strains on Growth, Nodulation and Physiological Traits of Soybean (Glycine max L.) under Water Deficit Conditions

Nahrawy

Elbagory

Omara

2020

JAMB

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In the future, drought are expected to increase, affecting the productivity of crops sensitive to water scarcity. Through N2-fixation process, soybean is capable of achieving its nitrogen demands, however, this process is inhibited under drought stress conditions. Therefore, it is vital to find suitable solutions for the agricultural sustainability of soybean. Under pot experiment, biocompatibility was studied between Bradyrhizobium japonicum and Trichoderma strains (Trichoderma viride, T. harzianum and T. kongii) for their ability to stimulate the growth, nodulation, N content and photosynthetic pigments of soybean plants under different irrigation intervals (every 2 days (I1), every 4 days (I2), and every 6 days (I3)). The experiment was conducted in summer 2020 with a split-plot randomized complete block design and six replicates. Among the Trichoderma strains, T. harzianum was the most tolerant to growth and auxin production in the maximum 25% PEG 6000 (poly ethylene glycol) concentration. Also, co-inoculation treatment (irrigation every 6 days and inoculation with B. japonicum + T. harzianum) recorded an increase rate reached to 69.4% for shoot length, 102.53% for root length, 79.06% for shoot dry weight, 103.44% for root dry weight and 178.57% for N content compared to control treatment. For physiological traits (chlorophyll a, b, carotenoids and total soluble sugar), there was a significant increase was observed when soybean plants inoculated with B. japonicum + T. harzianum treatment followed by B. japonicum + T. kongii treatment, under irrigation every 6 days condition. On the contrary, a decrease was observed in proline content for the same treatments. Thus, an adequate microbial consortium of Bradyrhizobium - Trichoderma, could represent a promising practical method for increasing the productivity of soybean especially when grown under drought conditions.

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Section: Discussionmentioning

confidence: 95%

Biocompatibility Effect of Bradyrhizobium japonicum and Trichoderma Strains on Growth, Nodulation and Physiological Traits of Soybean (Glycine max L.) under Water Deficit Conditions

Nahrawy

Elbagory

Omara

2020

JAMB

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“…After investigating the salt stress and inoculation effect on nodulation and growth of forage cowpea (Vigna unguiculata cv. Baladi), Omara and Tamer [98] reported the alleviation of detrimental effects of salt stress by applying dual inoculation with tolerant Bradyrhizobium SARSRh3 + Bradyrhizobium SARS-Rh5 due to improvement in nodulation, growth dynamics, increase in K uptake, and reduced Na uptake in forage cowpea plants.…”

Section: Role Of Biofertilizers In Alleviating Abiotic Stress In Planmentioning

confidence: 99%

Applications and Constraints of Plant Beneficial Microorganisms in Agriculture

Debnath¹,

Rawat²,

Mukherjee³

et al. 2020

Biostimulants in Plant Science

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At present time, chemical fertilizers are more in practice for crop production, which failed to upkeep soil and environment quality and affected the sustainability of the agricultural production system. Conversely, biofertilizers are ecosystem friendly, one of the best modern tools for agriculture, and are used to improve soil fertility and quality. Biofertilizers have now emerged as a highly potent alternative to inorganic fertilizers and offer an ecologically sound and economically attractive route for augmenting nutrient supply and increasing crop production. These include live cells of diverse genera of microorganisms and have the potential to fix atmospheric nitrogen and solubilize and mobilize plant nutrients from insoluble form through microbiological process. It has also the potential to diminish the gap between nutrient supply through fertilizers and nutrient removal by crops. Hence, biofertilizers can be a feasible option to the farmers to increase crop productivity and should find greater acceptance from the extension workers and commercial biofertilizer manufacturers. Applications and Constraints of Plant Beneficial Microorganisms in Agriculture DOI: http://dx.doi.org/10.5772/intechopen.89190 atmospheric nitrogen, which is transformed into organic nitrogenous compound. The nitrogen-fixing bacteria work under two conditions, symbiotically (Rhizobium, Frankia) and as free-living bacteria (nonsymbiotic) such as Azotobacter and Azospirillum. The N 2 -fixing bacteria associated with nonlegumes include species of Achromobacter, The most exploited symbiotic N 2 -fixing bacteria are those belonging to the family Rhizobiaceae. Rhizobium inoculants are of greatest importance because of their ability to fix atmospheric N 2 in association with certain legumes [11]. It is estimated that N 2 fixation by Rhizobium in root nodules of legumes is of the order of 14 million tons on a global scale and is almost 15% of the industrial N fixation. Yield of many legumes can be increased substantially by the use of appropriate Rhizobium cultures. For successful nodulation each legume requires a specific species of Rhizobium to form effective nodules. Many legumes may be modulated by diverse strains of rhizobia, but growth is enhanced only when nodules are produced by effective strains of rhizobia [12]. Rhizobium can be used for legumes crop and trees (e.g., lucerne) and is a crop-specific inoculant, for example, Rhizobium trifolii for berseem, Rhizobium meliloti for lucerne, Rhizobium phaseoli for green gram and black gram, Rhizobium japonicum for soya bean, Rhizobium leguminosarum for pea and lentil, Rhizobium lupini for chickpea, and Rhizobium spp. for cowpea. Rhizobium is however limited by cross-inoculation group, and only certain legumes are benefited by this symbiosis.Similar to the Rhizobium, other filamentous bacteria of genus Frankia belonging to the family Frankiaceae are found in the root nodules of nonlegumes such as trees and shrubs. These bacteria live in symbiosis with actinorhizal plants. These actinorhiza...

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“…isolates on seed yield and seed quality of forage cowpea under salinityaffected soil conditions.These bacteria (halo-tolerant Bradyrhizobium spp. isolates SARS-Rh3 and SARS-Rh5) were previously selected by (Omara and El-Gaafarey, 2018).…”

Section: Field Experimentsmentioning

confidence: 99%

“…All fertilizers treatments was applied according to the recommendation of Ministry of Agriculture and Land Reclamation. The inoculation treatments were prepared and applied according to Omara and El-Gaafarey (2018…”

Section: Field Experimentsmentioning

confidence: 99%

Impact of bio-inoculation with Bradyrhizobium spp. on yield and Seed quality of forage cowpea (Vigna unguiculata L.) under soil salinity conditions

El-Gaafarey

El-Nahrawy

2020

EBSS

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A STUDY was carried out to assess the effect of single and/or combined inoculation with Bradyrhizobium spp. isolates on seed yield and quality of forage cowpea (Vigna unguiculata cv. Baladi) under salinity-affected soil conditions. The experiment was conducted in a split plot design for two growing seasons, 2018 and 2019, with two main plot treatments of irrigation water (normal and saline) and four sub-plot inoculation treatments. Results revealed that sub-main plot treatments differed significantly for number of branches, number of pods, pod length, number of seeds pod-1 , pod weight plot-1 (Kg) and seed yield (Kg fed-1) of forage cowpea plants as affected by the type of irrigation water in the two growing seasons. Also, combination treatment (Bradyrhizobium SARS-Rh3 and Bradyrhizobium SARS-Rh5) significantly minimized the negative effects of saline irrigation water treatment for seed content of elements (N, P, K, Zn, Mn, Fe and Cu). In the same context, inoculation treatments followed the descending order of SARS-Rh3 + SARS-Rh5>SARS-Rh5>SARS-Rh3 > control for total carbohydrate and protein % of cowpea seeds during 2018 and 2019 seasons. For assessment of seed quality viz., seed germination (%), seedling length (cm), seedling weight (g), vigour index I and vigour index II were higher in 2019 than 2018 season. Similar finding was observed in economic evaluation for SARS-Rh3+SARS-Rh5 treatment which enhanced profitability of cowpea during the two growing seasons.

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Alleviation of Salinity Stress Effects in Forage Cowpea (Vigna unguiculata L.) by Bradyrhizobium sp. Inoculation

Cited by 6 publications

References 37 publications

Biocompatibility Effect of Bradyrhizobium japonicum and Trichoderma Strains on Growth, Nodulation and Physiological Traits of Soybean (Glycine max L.) under Water Deficit Conditions

Biocompatibility Effect of Bradyrhizobium japonicum and Trichoderma Strains on Growth, Nodulation and Physiological Traits of Soybean (Glycine max L.) under Water Deficit Conditions

Applications and Constraints of Plant Beneficial Microorganisms in Agriculture

Impact of bio-inoculation with Bradyrhizobium spp. on yield and Seed quality of forage cowpea (Vigna unguiculata L.) under soil salinity conditions

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