Symbiotic nitrogen fixation and nitrate reduction in two peanut cultivars with different growth habit and branching pattern structures

Delfini, Romina; Belgoff, Cecilia; Fernandez, Elena Mercedes; Fabra, Adriana; Castro, Stella

doi:10.1007/s10725-010-9461-1

Cited by 10 publications

(7 citation statements)

References 22 publications

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“…Groundnut inoculated by Bradyrhizobium under drought conditions had a large quantity of amino acids which was derived from the nitrogenase-catalyzed conversion of atmospheric N to NH 4 + ions necessary for amino acid and protein formation in the plant (Delfini et al 2010 ). The observed increase in protein level of legume-inoculated plants implied that these microbes aid in the supply of nitrogen via fixation in the presence of the nitrogenase enzyme operating at the root nodules of the plant.…”

Section: Drought Stress In the Reduction Of Plant Performancementioning

confidence: 99%

The influence of plant growth-promoting rhizobacteria in plant tolerance to abiotic stress: a survival strategy

Enebe

Babalola

2018

Appl Microbiol Biotechnol

267

105

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Action is needed to face the global threat arising from inconsistent rainfall, rise in temperature, and salinization of farm lands which may be the product of climate change. As crops are adversely affected, man and animals may face famine. Plants are severely affected by abiotic stress (drought, salinity, alkalinity, and temperature), which impairs yield and results in loss to farmers and to the nation at large. However, microbes have been shown to be of great help in the fight against abiotic stress, via their biological activities at the rhizosphere of plants. The external application of chemical substances such as glycine betaine, proline, and nutrients has helped in sustaining plant growth and productive ability. In this review, we tried to understand the part played by bioinoculants in aiding plants to resist the negative consequences arising from abiotic stress and to suggest better practices that will be of help in today’s farming systems. The fact that absolute protection and sustainability of plant yield under stress challenges has not been achieved by microbes, nutrients, nor the addition of chemicals (osmo-protectants) alone suggests that studies should focus on the integration of these units (microbes, nutrients, chemical stimulants, and osmo-protectants) into a strategy for achieving a complete tolerance to abiotic stress. Also, other species of microbes capable of shielding plant from stress, boosting yield and growth, providing nutrients, and protecting the plants from harmful invading pathogens should be sought.

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Section: Drought Stress In the Reduction Of Plant Performancementioning

confidence: 99%

The influence of plant growth-promoting rhizobacteria in plant tolerance to abiotic stress: a survival strategy

Enebe

Babalola

2018

Appl Microbiol Biotechnol

267

105

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“…The ability of symbiotic N 2 fixation and nodulation (nodule weight and numbers) has been detected among cultivars of peanut [8]. Differences were also found among peanut cultivars in terms of response to Bradyrhizobium inoculation and N fertilizer application [9].…”

Section: Introductionmentioning

confidence: 93%

Integrating inorganic NP application and Bradyrhizobium inoculation to minimize production cost of peanut (Arachis hypogea L.) in eastern Ethiopia

Argaw

2018

Agric & Food Secur

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Background: Integrated application of inorganic NP and inoculation of Bradyrhizobium sp. exhibits various effect on nodulation and productivity of peanut in different locations. Therefore, this field experimental was set up in Fedis and Babile to investigate the effect of nitrogen, phosphorus and Bradyrhizobium inoculation on nodulation and yield of peanut. Methods: Fourteen treatments were laid out in randomized complete block with three replications. Results: ANOVA revealed that the main effect of Bradyrhizobium inoculation, N and P and their two and three ways interaction had significant effect on most of the investigated traits of peanut. Applying 20 kg N ha −1 significantly enhanced the nodule number (NN) and nodule dry weight (NDW) at Fedis but reduction of nodulation was found at Babile site. Phosphorus application at 60 and 30 kg P 2 O 5 ha −1 significantly increased the NDW by 88.4 and 34% over the P control at Babile and Fedis site, respectively. A significant increase in grain yield at 60 and 30 kg P 2 O 5 ha −1 was also observed at Babile and Fedis, respectively. Although Bradyrhizobium increased the nodulation at Fedis site, this effect was not observed on yield of peanut. A significant increase in NN and NDW by inoculation was found with only when N was not applied either of the locations. However, inorganic N application increased plant N accumulation at Babile site. Conclusions: According to the results from the field experiments, the yield of peanut at Babile and Fedis can be enhanced by applying 60 and 30 kg P 2 O 5 ha −1 , respectively, with background rhizobia. Although P application increase the yield of peanut, the yield is still far below the potential yield of peanut reported elsewhere. Hence, further investigation of other yield limiting factors in the study sites is needed.

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“…Similar results on increase in amino acids were obtained to Costa et al [35] investigating Vigna unguiculata plants. Delfini et al [36] evaluating the responses of two Arachis hypogaea cultivars submitted to inoculation of Bradyrhizobium sp. showed significant increase in amino acids.…”

Section: Interference Positive On Nitrogen Compounds Of Plants Inoculmentioning

confidence: 99%

“…The inoculation proportioned increase of total dry matter, and this result must be linked to better development and efficiency of root system, in which presents higher nitrogen absorption using the nodulation process. I addition, normally the higher nitrogen fixation will produce increase in amino acids and also proteins [36], and it exercises influence on photoassimilates availability.…”

Section: Bradyrhizobium Producing Better Performance On Morphologicalmentioning

confidence: 99%

Tolerance to Drought in Leguminous Plants Mediated by Rhizobium and Bradyrhizobium

Lobato¹,

Silveira²,

Costa³

et al. 2013

Responses of Organisms to Water Stress

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Water deficit is an abiotic factor that affects the agricultural production with high frequency and intensity, influencing aspects related to plant development, such as decrease in photosynthesis rate, reduction in leaf area [3], and stomata closing [4]. Crops normally present performance affected by water deficiency, which can cause lower growth and development (Figure 1), with progressive reduction in leaf dry matter [5] and consequent repercussion on production parameters, such as number of grains and pods per plant. Root system presents complex strategy aiming to maintain water supply in conditions of water deficit, by increasing the root elongation rate and completely inhibiting the shoot [6]. On the other hand, plants growing in low water potentials normally present root thinner [7], and this morphological modification is an adaptation to increase water absorption efficiency. Therefore, a combination of changes in morphological, physiological and biochemical levels are necessary to plant survival in environments affected by drought.

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Symbiotic nitrogen fixation and nitrate reduction in two peanut cultivars with different growth habit and branching pattern structures

Cited by 10 publications

References 22 publications

The influence of plant growth-promoting rhizobacteria in plant tolerance to abiotic stress: a survival strategy

The influence of plant growth-promoting rhizobacteria in plant tolerance to abiotic stress: a survival strategy

Integrating inorganic NP application and Bradyrhizobium inoculation to minimize production cost of peanut (Arachis hypogea L.) in eastern Ethiopia

Tolerance to Drought in Leguminous Plants Mediated by Rhizobium and Bradyrhizobium

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