Cowpea (Vigna unguiculata L. Walp.): A choice crop for sustainability during the climate change periods

Ayalew, Tewodros; Yoseph, Tarekegn

doi:10.7324/jabb.2022.100320

Cited by 10 publications

(8 citation statements)

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Section: Discussionmentioning

confidence: 99%

“…Cowpea production in Brazil is primarily concentrated in the semi-arid regions of the northeast. Although cowpeas are considered drought-tolerant, water de cits during the early vegetative stages can negatively affect their morphological and physiological traits, ultimately affecting biological nitrogen xation (BNF) and grain yield (Munjonji et al 2018;Ayalew and Yoseph 2022;Lumactud et al 2022).Plant growth-promoting rhizobacteria (PGPR) offer a promising biotechnological approach for mitigating the effects of abiotic stress on various crops (Bittencourt et al 2023;Cao et al 2023). Microbial communities sourced from speci c environments, such as semi-arid regions, adapted to drought conditions, may exhibit enhanced effectiveness in assisting plants to cope with water de cits (Shirinbayan et al 2019;Shet and Garg 2022;Braga et al 2022).…”

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confidence: 99%

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Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain

Correa,

Pacheco,

Viana

et al. 2023

Preprint

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Background and Aims Drought is one of the main causes of global crop decline. Plant growth-promoting rhizobacteria enhance plant tolerance to adverse environmental conditions. This study aimed to determine whether the rhizobacteria Microvirga vignae (BR 3296 and BR 3299) and Bradyrhizobium sp. (BR 3301) can maintain cowpea growth under drought stress. Methods We analyzed biomass, nodulation, nitrogen accumulation, and physiological traits of the inoculated plants. Rhizobacterial strains were assessed for exopolysaccharide (EPS) and indole acetic acid (IAA) production, growth, and biofilm formation in a water-stress medium induced by polyethylene glycol (PEG)-6000. The expression of genes associated with abscisic acid (ABA) biosynthesis in root nodules was also investigated. Results All evaluated strains were grown in a culture medium supplemented with PEG. M. vignae strains exhibited increased biofilm formation and EPS production, while Bradyrhizobium showed high IAA production. Cowpea plants inoculated with Bradyrhizobium exhibit higher levels of nodulation, biomass, and nitrogen accumulation. Conversely, M. vignae strains were more efficient at alleviating drought stress and maintaining nodulation, biomass, nitrogen accumulation, and stomatal conductance similar to well-watered plants. Drought-inducible genes were more strongly upregulated in the nodules of plants inoculated with Bradyrhizobium than in those inoculated with M. vignae. Conclusion Our results suggest that M. vignae strains, isolated from a semi-arid region, help plants withstand water-stress, whereas the strain of Bradyrhizobium sp. isolated from a wet region did not effectively alleviate drought stress. However, Bradyrhizobium sp. conferred growth and nitrogen accumulation to cowpea superior to M. vignae and like plants supplied with nitrogen fertilizer.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain

Correa,

Pacheco,

Viana

et al. 2023

Preprint

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“…"It grows well in a wide range of soils and conditions, although it thrives in well-drained sandy loams or sandy soils with pH values between 5.5 and 6.5" [14,15]. "The crop performs well even when produced in poor nutrient soils due to its ability to (BNF) fix nitrogen in the soil" [16]. Cowpea is a multipurpose crop that nourishes both humans and animals while also delivering a lucrative and constant income flow to farmers and grain traders [17] (Ngum et al, 2022).…”

Section: Review Articlementioning

confidence: 99%

Improving the Photosynthetic Efficiency and Productivity of Cowpea in Sub Saharan Africa: A Review

Alidu

Appiah

2022

JSRR

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Recent studies have found compelling evidence that enhancing photosynthetic mechanisms through genetic engineering can increase crop yield potential. This paper focuses on cowpea productivity in Sub-Saharan Africa, its importance, factors limiting photosynthetic potential, and techniques towards boosting cowpea photosynthetic efficiency. High light intensity, low temperature, low CO2 environment, and water scarcity have all been identified as key limiting factors for crop photosynthetic efficiency. Deactivation of Rubisco functioning in shade has also been noted to reduce cowpea photosynthetic potential. However, recent successes have been observed through genetic manipulation of photosynthesis traits so as to improve photosynthetic efficiency and yield under control conditions with considerable increase in yield from 14 to 40%. Thus, improving photosynthesis has the potential to increase crop productivity.

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“…In addition to its important nutritional potential, its short biological cycle makes this crop ideal for participation in organic farming systems due to its high rates of nitrogen fixation, phosphorus use efficiency and regrowth capacity [ 16 , 17 ]. Like other leguminous crops, it enhances soil improvement due to its ability to coexist with several Rhizobium bacteria species [ 18 , 19 ], resulting in the enrichment of the soil with nitrogen [ 20 , 21 ]. Cowpea can also improve soil structure by forming a deep root system and reduce soil erosion due to the extensive coverage that the plants provide [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Cowpea Constraints and Breeding in Europe

Lazaridi

Bebeli

2023

Plants

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Cowpea (Vigna unguiculata (L.) Walp.) is a legume with a constant rate of cultivation in Southern European countries. Consumer demand for cowpea worldwide is rising due to its nutritional content, while Europe is constantly attempting to reduce the deficit in the production of pulses and invest in new, healthy food market products. Although the climatic conditions that prevail in Europe are not so harsh in terms of heat and drought as in the tropical climates where cowpea is mainly cultivated, cowpea confronts with a plethora of abiotic and biotic stresses and yield-limiting factors in Southern European countries. In this paper, we summarize the main constraints for cowpea cultivation in Europe and the breeding methods that have been or can be used. A special mention is made of the availability plant genetic resources (PGRs) and their potential for breeding purposes, aiming to promote more sustainable cropping systems as climatic shifts become more frequent and fiercer, and environmental degradation expands worldwide.

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Cowpea (Vigna unguiculata L. Walp.): A choice crop for sustainability during the climate change periods

Cited by 10 publications

References 0 publications

Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain

Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain

Improving the Photosynthetic Efficiency and Productivity of Cowpea in Sub Saharan Africa: A Review

Cowpea Constraints and Breeding in Europe

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