Salt Stress is Alleviated by Either Proline or Silicon But Not by Their Combination in Alfalfa (Medicago sativa L.) Inoculated with a Salt-Tolerant Ensifer meliloti Strain

Moukhtari, Ahmed El; Crilat, Emilie; Carol, Pierre; Lamsaadi, Nadia; Hidri, Rabaa; Farissi, Mohamed; Savouré, Arnould

doi:10.1007/s00344-022-10865-1

Cited by 3 publications

(2 citation statements)

References 84 publications

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“…This proline accumulation can positively affect plant growth and, consequently, seed germination, biomass, photosynthesis, gas exchange, and seed yield 6,38 . As shown in Figure 5, by increasing the amount of salinity, total dry weights were decreased.…”

Section: Resultsmentioning

confidence: 94%

Introducing sorghum DREB2 gene in maize (Zea mays L.) to improve drought and salinity tolerance

Izadi-Darbandi

Alameldin

Namjoo

et al. 2023

Biotech and App Biochem

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Salinity and drought are significant abiotic stresses causing a considerable loss of seed and biomass yield in most commercial crops. Some of the most critical players in the abscisic acid pathway are drought responsive element binding (DREB) proteins that are a part of AP2/ethylene response factor transcription factors that bind to promoters of some family genes needed to be expressed under abiotic stresses. In this study, salt‐ and drought‐tolerant maize plants were produced from immature maize embryos bombarded by the sorghum (Sorghum bicolor L.) DREB2 gene that is linked to hygromycin resistance (hpt) genes. The putative transgenic calli were transferred to an N6 medium containing 1 mg/L benzylaminopurine and 50 mg/L hygromycin. Regeneration was completed after 4 weeks on selective media under a 16/8 h light/dark condition at 25°C. Polymerase chain reaction (PCR) and reverse transcription‐PCR approved the existence of upstream promoter (rd29a), hpt gene, and the expression of the DREB2 in transgenes up to the third generation (T2). It was found that the K+/Na+ ratio and the amount of proline as a screening indicator were higher in transgenic plants compared to their wild types. This result is a promising model to enhance maize tolerance to abiotic stressors.

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Section: Resultsmentioning

confidence: 94%

Introducing sorghum DREB2 gene in maize (Zea mays L.) to improve drought and salinity tolerance

Izadi-Darbandi

Alameldin

Namjoo

et al. 2023

Biotech and App Biochem

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“…For example, a recent review reported that Si mitigates the negative effect of abiotic stresses as early as seed germination [ 22 ] and several studies have reported that Si supply enables alleviation of plants experiencing drought [ 23 ] or heat stress [ 24 ]. In the same way, a Si supply enables better tolerance to salt stress by sustaining various biological process such as photosynthesis or by stimulating detoxification of reactive oxygen species (ROS) [ 25 ]. Moreover, it has been shown that Si supplementation is beneficial in plants subjected to nutrient deficiency, such as deficits in N, P and K, and to a lesser extent S [ 26 , 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Silicon Supply Improves Nodulation and Dinitrogen Fixation and Promotes Growth in Trifolium incarnatum Subjected to a Long-Term Sulfur Deprivation

Coquerel,

Arkoun,

Dupas

et al. 2023

Plants

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In many crops species, sulfur (S) deprivation negatively affects growth, seed yield quality and plant health. Furthermore, silicon (Si) is known to alleviate many nutritional stresses but the effects of Si supply on plants subjected to S deficiency remain unclear and poorly documented. The objective of this study was to evaluate whether Si supply would alleviate the negative effects of S deprivation on root nodulation and atmospheric dinitrogen (N2) fixation capacity in Trifolium incarnatum subjected (or not) to long-term S deficiency. For this, plants were grown for 63 days in hydroponic conditions with (500 µM) or without S and supplied (1.7 mM) or not with Si. The effects of Si on growth, root nodulation and N2 fixation and nitrogenase abundance in nodules have been measured. The most important beneficial effect of Si was observed after 63 days. Indeed, at this harvest time, a Si supply increased growth, the nitrogenase abundance in nodules and N2 fixation in S-fed and S-deprived plants while a beneficial effect on the number and total biomass of nodules was only observed in S-deprived plants. This study shows clearly for the first time that a Si supply alleviates negative effects of S deprivation in Trifolium incarnatum.

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Biostimulatory effects of ascorbic acid in improving plant growth, photosynthesis-related parameters and mitigating oxidative damage in alfalfa (Medicago sativa L.) under salt stress condition

El Moukhtari,

Lamsaadi,

Farissi

2024

Biologia

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Salt Stress is Alleviated by Either Proline or Silicon But Not by Their Combination in Alfalfa (Medicago sativa L.) Inoculated with a Salt-Tolerant Ensifer meliloti Strain

Cited by 3 publications

References 84 publications

Introducing sorghum DREB2 gene in maize (Zea mays L.) to improve drought and salinity tolerance

Introducing sorghum DREB2 gene in maize (Zea mays L.) to improve drought and salinity tolerance

Silicon Supply Improves Nodulation and Dinitrogen Fixation and Promotes Growth in Trifolium incarnatum Subjected to a Long-Term Sulfur Deprivation

Biostimulatory effects of ascorbic acid in improving plant growth, photosynthesis-related parameters and mitigating oxidative damage in alfalfa (Medicago sativa L.) under salt stress condition

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