Seed Biopriming With Osmo-Tolerant Rhizobacteria Enhances the Tolerance of Alfalfa (Medicago Sativa L.)-Rhizobia Symbiosis to Water Deficit

Lahrizi, Yahya; Oukaltouma, Khawla; Mouradi, Mohammed; Farissi, Mohamed; Qaddoury, Ahmed; Bouizgaren, Abdelaziz; Ghoulam, Cherki

doi:10.15666/aeer/1901_563580

Cited by 6 publications

(3 citation statements)

References 27 publications

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“…In response to water deficit stress, plants activate their own drought response mechanisms, such as physiological and structural changes, the expression of drought-resistant genes, and the synthesis of hormones and osmotic regulatory substances to alleviate the water deficit stress [31]. The use of drought tolerant species is one of the strategies to deal with water shortage in the agricultural sector [2,3]. Since plant performance is influenced by morpho-physiological, biochemical, and molecular traits, these traits can be used as a tool to identify and select drought-tolerant plants.…”

Section: Discussionmentioning

confidence: 99%

“…Plants are often subject to several environmental stresses which negatively influence their growth, development, and productivity. Drought is one of the most harmful abiotic stresses, particularly in the Mediterranean basin, where arid climate causes water scarcity and high evapotranspiration [1,2]. Severe droughts may directly reduce or eliminate yields, leading to a decline in crop productivity by up to 50-70%, which may affect 40% of the global population [3].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the Morpho-Physiological, Biochemical and Molecular Responses of Contrasting Medicago truncatula Lines under Water Deficit Stress

Haddoudi

Hdira

Hanana

et al. 2021

Plants

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Medicago truncatula is a forage crop of choice for farmers, and it is a model species for molecular research. The growth and development and subsequent yields are limited by water availability mainly in arid and semi-arid regions. Our study aims to evaluate the morpho-physiological, biochemical and molecular responses to water deficit stress in four lines (TN6.18, JA17, TN1.11 and A10) of M. truncatula. The results showed that the treatment factor explained the majority of the variation for the measured traits. It appeared that the line A10 was the most sensitive and therefore adversely affected by water deficit stress, which reduced its growth and yield parameters, whereas the tolerant line TN6.18 exhibited the highest root biomass production, a significantly higher increase in its total protein and soluble sugar contents, and lower levels of lipid peroxidation with greater cell membrane integrity. The expression analysis of the DREB1B gene using RT-qPCR revealed a tissue-differential expression in the four lines under osmotic stress, with a higher induction rate in roots of TN6.18 and JA17 than in A10 roots, suggesting a key role for DREB1B in water deficit tolerance in M. truncatula.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Evaluation of the Morpho-Physiological, Biochemical and Molecular Responses of Contrasting Medicago truncatula Lines under Water Deficit Stress

Haddoudi

Hdira

Hanana

et al. 2021

Plants

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“…The application of seed biopriming enhances drought tolerance in various widely grown crops, such as rice ( Bashyal et al., 2020 ; Bashyal et al., 2021 ), tomato ( Anbazhagan et al . ; Pehlivan et al., 2018 ), wheat ( Gangwar and Singh, 2018 ), and alfalfa ( Lahrizi et al., 2021 ). The present study was conducted in wheat seedlings because wheat is the most important nutrient-rich cereal crop, a factor that has markedly increased global demand for this crop.…”

Section: Introductionmentioning

confidence: 99%

Seed Bio-priming of wheat with a novel bacterial strain to modulate drought stress in Daegu, South Korea

et al. 2023

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Wheat is one of the major cereal crop grown food worldwide and, therefore, plays has a key role in alleviating the global hunger crisis. The effects of drought stress can reduces crop yields by up to 50% globally. The use of drought-tolerant bacteria for biopriming can improve crop yields by countering the negative effects of drought stress on crop plants. Seed biopriming can reinforce the cellular defense responses to stresses via the stress memory mechanism, that its activates the antioxidant system and induces phytohormone production. In the present study, bacterial strains were isolated from rhizospheric soil taken from around the Artemisia plant at Pohang Beach, located near Daegu, in the South Korea Republic of Korea. Seventy-three isolates were screened for their growth-promoting attributes and biochemical characteristics. Among them, the bacterial strain SH-8 was selected preferred based on its plant growth-promoting bacterial traits, which are as follows: abscisic acid (ABA) concentration = 1.08 ± 0.05 ng/mL, phosphate-solubilizing index = 4.14 ± 0.30, and sucrose production = 0.61 ± 0.13 mg/mL. The novel strain SH-8 demonstrated high tolerance oxidative stress. The antioxidant analysis also showed that SH-8 contained significantly higher levels of catalase (CAT), superoxide dismutase (SOD), and ascorbic peroxidase (APX). The present study also quantified and determined the effects of biopriming wheat (Triticum aestivum) seeds with the novel strain SH-8. SH-8 was highly effective in enhancing the drought tolerance of bioprimed seeds; their drought tolerance and germination potential (GP) were increased by up to 20% and 60%, respectively, compared with those in the control group. The lowest level of impact caused by drought stress and the highest germination potential, seed vigor index (SVI), and germination energy (GE) (90%, 2160, and 80%, respectively), were recorded for seeds bioprimed with with SH-8. These results show that SH-8 enhances drought stress tolerance by up to 20%. Our study suggests that the novel rhizospheric bacterium SH-8 (gene accession number OM535901) is a valuable biostimulant that improves drought stress tolerance in wheat plants and has the potential to be used as a biofertilizer under drought conditions.

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Seed Priming and Nano Priming Techniques as Tools to Alleviate Osmotic Stress in Legumes

Mouradi

Farissi

Khadraji

et al. 2023

Biosaline Agriculture as a Climate Change Adaptation for Food Security

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Seed Biopriming With Osmo-Tolerant Rhizobacteria Enhances the Tolerance of Alfalfa (Medicago Sativa L.)-Rhizobia Symbiosis to Water Deficit

Cited by 6 publications

References 27 publications

Evaluation of the Morpho-Physiological, Biochemical and Molecular Responses of Contrasting Medicago truncatula Lines under Water Deficit Stress

Evaluation of the Morpho-Physiological, Biochemical and Molecular Responses of Contrasting Medicago truncatula Lines under Water Deficit Stress

Seed Bio-priming of wheat with a novel bacterial strain to modulate drought stress in Daegu, South Korea

Seed Priming and Nano Priming Techniques as Tools to Alleviate Osmotic Stress in Legumes

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