Root and Agro-Morphological Traits Performance in Cowpea under Drought Stress

Santos, R. F.; Carvalho, Márcia; Rosa, Eduardo; Carnide, V.; Castro, Isaura

doi:10.3390/agronomy10101604

Cited by 28 publications

(13 citation statements)

References 53 publications

(110 reference statements)

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“…In the study of plant adaptation processes (avoidance or tolerance) in reaction to water deficit conditions, the dynamics of the shoot and the root adjustments are considered as a significant parameter [14]. The results of this study showed that significant changes occurred in basic biomass parameters in both organs, and they are consistent with other previously reported findings [15][16][17].…”

Section: Resultssupporting

confidence: 90%

Morphological and biochemical changes in shoot and root organs of common vetch (Vicia sativa L.) after exposure to drought stress

Beyaz¹

2022

ScienceAsia

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Morphological and biochemical responses of shoot and root organs of post-drought stress vetch plant were investigated. Vetch seedlings were exposed to drought stress (100 g/l PEG 6000 ) under in vitro conditions. Parameters were measured on 14-day-old seedlings. Under drought stress, shoot and root length, fresh weight, and water content were decreased. The dry matter ratio (DMR) increased in both the root and the shoot, and an increase in root dry weight was detected. Moreover, drought induced changes in activities of antioxidant enzymes including catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione reductase (GR) in both organs. Enzymes analysis revealed a reverse association between CAT and SOD with APX and GR activities. The inverse relationship between these antioxidant enzyme activities may depend on the plant's growth period. An increase in proline and malondialdehyde (MDA) contents was detected. Overall, the increase in morphological and biochemical parameters indicates that the root organ had a stronger response than the shoot organ under drought stress. The basic scientific knowledge obtained from this study could benefit future studies, such as breeding, in vetch plants.

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Section: Resultssupporting

confidence: 90%

Morphological and biochemical changes in shoot and root organs of common vetch (Vicia sativa L.) after exposure to drought stress

Beyaz¹

2022

ScienceAsia

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“…Il a donc eu une allocation préférentielle de la matière sèche vers la partie aérienne (tige plus feuilles). Contrairement au cas du voandzou, les travaux réalisés par Turk et al (2004) et Santos et al (2020) ont montré que la croissance racinaire a été moins affectée que celle de la tige chez la lentille et le niébé.…”

Section: Discussionunclassified

Effet du déficit hydrique induit par l’agar-agar sur la croissance des vitroplants de deux morphotypes de voandzou (Vigna subterranea L. Verdc.)

Touré¹,

Koné²,

Coulibaly³

et al. 2022

Int. J. Bio. Chem. Sci

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Le voandzou (Vigna subterranea L.) est l’une des légumineuses à graines tropicales généralement cultivé dans les régions à faible pluviométrie. Cette étude visait à déterminer le comportement des morphotypes Ci2 et Ci4 de voandzou en conditions de déficit hydrique. Les vitroplants issus du développement des axes embryonnaires des graines et âgés de dix jours, ont été transférés sur le milieu de base de Murashige et Skoog (½MS0) solidifié avec différentes concentrations d’agar-agar (6 g/l, 12 g/l, 18 g/l, 24 g/l, 30 g/l, 36 g/l) pour induire le déficit hydrique. Après 30 jours d’incubation, l’évaluation des vitroplants a montré que l’effet du déficit hydrique sur leur croissance a varié selon l’organe et le morphotype utilisé. Le système racinaire des plantules a été plus affecté par le déficit hydrique comparativement au système aérien. Les taux de réduction de la hauteur des plantules, du nombre de feuilles, de la biomasse fraîche aérienne et de la biomasse sèche racinaire ont respectivement été de 39,46%, 16,66%, 72,88%, 29,39%, 32,50%, 52,25% pour le morphotype Ci2 et de 45,94%, 39,40%, 72,15%, 53,80%, 39,18% 67,93% pour le morphotype Ci4. La réduction de la croissance consécutivement au déficit hydrique induit par l’agar-agar a été plus importante avec le morphotype Ci4. Aussi, le morphotype Ci2, dont la réduction de la croissance a été moins affectée est considéré comme étant le plus tolérant au déficit hydrique. English title: Effect of water deficit induced by agar-agar on the vitroplants growth of two landraces of voandzeia (Vigna subterranea L. Verdc.) Voandzeia (Vigna subterranea L.) is one of the most common tropical legumes grown in low rainfall areas. The objective of this study were to determine the behavior of two landraces (Ci2 and Ci4) under water deficit conditions. Vitroplants from the development of the embryonic axes of seed, aged ten days, were transferred to the base medium of Murashige and Skoog (½MS0) solidified with different concentrations of agar agar (6 g/l, 12 g/l, 18 g/l, 24 g/l, 30 g/l, 36 g/l) to induce water deficit. After 30 days of incubation, vitroplant evaluation showed that the effect of water deficit on growth varied depending on organ and landrace used. Seedling root systems were more affected by water deficit than the aerial system. The reduction rates of seedling height, leaf number, aerial fresh biomass, and root dry biomass were respectively 39.46%, 16.66%, 72.88%, 29.39%, 32.50%, 52.25% for landrace Ci2, and 4 5.94%, 39.40%, 72.15%, 53.80%, 39.18% 67.93% for landrace Ci4. The reduction in growth following agar-agar induced water deficit was greater with morphotype Ci4. Also, landrace Ci2, whose reduction in growth has been less affected, is considered to be the most water deficit tolerant.

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“…Contrary reports showed a reduced uptake of N, P, K, Mg and Ca in legumes (Habibzadeh et al 2015;McCulloch et al 2021;Ullah and Farooq 2021) underwater stress which could be explained by the reduction in transpiration rates, altered membrane permeability, decline in the root-absorbing power and impaired nutrient mobility in the soil (Santos et al 2020).A greater demand of the minerals for seeds can be expected as the plant grows thus, it is expected that lower mineral content of leaves in dry seed stage rather than immature pods. Moreover, leaf nutrients content is affected by developmental stage.…”

Section: Leaf Nutrients Contentmentioning

confidence: 86%

“…However, under climate change, extreme unfavorable conditions such as drought and heat stress affect cowpea production in the arid and semi-arid regions, leading to yield loss(Venkatesh and Park 2014 ).This pattern is expected to continue as cowpea is the main grain legume of Mediterranean areas, Africa tropics and sub-tropics (Prgomet et al 2019 ). In addition, Europe is facing a deficit of about 70% of grain legumes (Santos et al 2020 ) and 60% of the current legumes producing areas in Sub Saharan Africa are projected to become unsuitable for common bean production before the end of the century (Carvalho et al 2019 ; Karapanos et al 2017 ; Keshavarz and Sadegh-Ghol-Moghadam 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Cowpea seeds from plants subjected to restricted-and full-irrigation regimes show differential phytochemical activity

et al. 2022

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Background Water scarcity is responsible for losses in the yield of many plants and this is expected to continue due to climate change. However, cowpea which is known for its drought tolerance, is considered as a plant without limitations to climate change. A two-year experiment was conducted to evaluate the effect of water restriction on phenolic compounds, antioxidant capacity and leaf nutrients concentration of four cultivars of cowpea at different growth stages. At second leaf stage, two irrigation regimes were initiated (Water irrigation was applied after 75% and 55% of field capacity, as well watered and drought stress treatment, respectively).Plants samples were collectedat three stages(immature pod, immature seed and dry seed stage) for total phenol and flavonoids content, ortho-diphenols andantioxidant capacity measurement and leaves sampling for nutrients concentration. Results The results indicated that polyphenolic compounds and antioxidant capacity increased under drought conditions. However, in both irrigation regimes, immature pods had the higher polyphenolic compounds, antioxidant capacity and leaf nutrients concentration rather than immature seeds and dry seeds. Among the genotypes, ILC482 revealed the highest content of total phenolics and ortho-diphenols (6.9 and 3.57 mg GA g−1dry weight, respectively). In addition, nitrogen, phosphorus and magnesium concentration of leaves were higher in ILC482 genotype. Under drought stress, ILC482 maintained higher ABTS radical scavenging capacity (0.0083 mmol Trolox g−1dry weight) compared to other genotypes. Conclusions It is suggested that drought stress affect the quality of cowpea productions through polyphenolic compounds, ABTS and DPPH radical scavenging capacity which can be used as a helpful strategy to save water in the regions where water is scare.

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Root and Agro-Morphological Traits Performance in Cowpea under Drought Stress

Cited by 28 publications

References 53 publications

Morphological and biochemical changes in shoot and root organs of common vetch (Vicia sativa L.) after exposure to drought stress

Morphological and biochemical changes in shoot and root organs of common vetch (Vicia sativa L.) after exposure to drought stress

Effet du déficit hydrique induit par l’agar-agar sur la croissance des vitroplants de deux morphotypes de voandzou (Vigna subterranea L. Verdc.)

Cowpea seeds from plants subjected to restricted-and full-irrigation regimes show differential phytochemical activity

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