Dehydration-induced alterations in growth and osmotic potential of callus from six tepary bean lines varying in drought resistance

Mohamed, Mohamed F.; Tawfik, Azza A.

doi:10.1007/s11240-006-9159-2

Cited by 8 publications

(4 citation statements)

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“…3" showed lowest leaf Ψs under water deficit condition. Interestingly, it was found that leaf Ψs of "Longdong" and "Xinjiang Daye" were significantly lower than that of the other three cultivars under the normal condition, indicating that their adaptability to drought may be stronger than the other cultivars, since the lower initial leaf Ψs means the stronger water retention capacity (Mohamed and Tawfik, 2006;Ma et al, 2012). The data of leaf relative water content (RWC) in this study support this point.…”

Section: Discussionsupporting

confidence: 71%

Comprehensive Assessment of Drought Resistance in Seedlings of Five Alfalfa (Medicago Sativa L.) Cultivars

Guo¹

2019

Appl. Ecol. Env. Res.

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Selecting drought-tolerant alfalfa cultivars is conducive to improve the forage yield in arid and semi-arid areas. In this study, drought resistance of five alfalfa (Medicago sativa L.) cultivars at the seedling stage was analyzed by using agronomic and physiological indicators. After withholding water for 6 days and then re-watering for 4 days, shoot dry weights of "Longdong" and "Daye" were significantly higher than that of the other cultivars. Under drought stress, "Daye" had healthier plasma membrane with the minimum leaf membrane permeability, while the leaf osmotic potential of "Longdong" and "Gannong No. 3" were significantly lower than that of the other three cultivars. Moreover, "Longdong" showed the highest leaf relative water content. According to the combination of above indicators, the relative drought resistance of the five cultivars decreased in order: "Longdong", "Daye", "Gannong No. 3", "Sandili", and "Rambler". This study suggested that "Longdong" and "Daye" might be more suitable for planting in arid and semi-arid regions.

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Section: Discussionsupporting

confidence: 71%

Comprehensive Assessment of Drought Resistance in Seedlings of Five Alfalfa (Medicago Sativa L.) Cultivars

Guo¹

2019

Appl. Ecol. Env. Res.

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“…Osmotic potential was determined with an osmometer (030), using sap extracts from fresh calli tissues. Osmolarity was expressed as MPa using the formula ψ s = 0.00227 k, where k = osmolarity in mosmol kg −1 [ 104 ].…”

Section: Methodsmentioning

confidence: 99%

Oxidative damage, antioxidant mechanism and gene expression in tomato responding to salinity stress under in vitro conditions and application of iron and zinc oxide nanoparticles on callus induction and plant regeneration

2021

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Background Salinity is one of the most challenging abiotic stresses restricting the growth of plants. In vitro screening will increase the efficiency and speed of salinity tolerant genotypes identifications. The response of four tomato cultivars under salinity was analyzed in vitro to evaluate the seedlings growth, biochemical, and gene expression responses as well as the effect of nano zinc and iron on callus induction and plant regeneration. Results The results showed that an increase in salinity stress in the medium decreased the germination percentage, fresh and dry weight of shoot, root length, chlorophyll a, b and carotenoids content, K and Ca content, and on the other hand, Na content was increased. MDA content (‘Nora’, ‘PS-10’, ‘Peto’ and ‘Roma’: 1.71, 1.78, 1.66 and 2.16 folds, respectively), electrolyte leakage (‘PS-10’: 33.33%; ‘Roma’: 56.33%), were increased with salinity of 100 mM compared to control. Proline content was increased in 50 mM NaCl (10.8 fold). The most activity of antioxidant enzymes including CAT, SOD, APX, GPX, and GR was observed in the ‘PS-10’ cultivar, and the lowest activity of these enzymes was observed in ‘Roma’ under salinity stress. The AsA and GSH were decreased and DHA and GSSG were increased with the increased intensity of salinity. The relative expression of SOD, APX, and GR genes varied in different cultivars at different salinity concentrations. The most percentage of callus induction was observed with applying iron oxide nanoparticles, and the most regeneration rate was recorded using zinc oxide nanoparticles. Conclusion The results showed that salt-tolerant cultivars such as ‘PS-10’ with better osmotic adjustment, are suitable candidates for the future production and breeding programs. The use of nutrient nanoparticles under salinity stress for different tomato cultivars increased their performance.

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“…A plant's morphological and physiological traits can be altered as a kind of adaptation in response to drought. Some of the ways plants react to drought include shrinking their leaves, sealing their stomata, altering the proportion of their biomass that is found in their shoots and roots, and modifying their roots (47)(48)(49). In response to drought stress, legumes' root systems grow and are distributed in ways that optimize their ability to survive (50, 51).…”

Section: Problems Related To Production and Climate Resilient Featuresmentioning

confidence: 99%

Underutilized legumes: nutrient status and advanced breeding approaches for qualitative and quantitative enhancement

et al. 2023

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Underutilized/orphan legumes provide food and nutritional security to resource-poor rural populations during periods of drought and extreme hunger, thus, saving millions of lives. The Leguminaceae, which is the third largest flowering plant family, has approximately 650 genera and 20,000 species and are distributed globally. There are various protein-rich accessible and edible legumes, such as soybean, cowpea, and others; nevertheless, their consumption rate is far higher than production, owing to ever-increasing demand. The growing global urge to switch from an animal-based protein diet to a vegetarian-based protein diet has also accelerated their demand. In this context, underutilized legumes offer significant potential for food security, nutritional requirements, and agricultural development. Many of the known legumes like Mucuna spp., Canavalia spp., Sesbania spp., Phaseolus spp., and others are reported to contain comparable amounts of protein, essential amino acids, polyunsaturated fatty acids (PUFAs), dietary fiber, essential minerals and vitamins along with other bioactive compounds. Keeping this in mind, the current review focuses on the potential of discovering underutilized legumes as a source of food, feed and pharmaceutically valuable chemicals, in order to provide baseline data for addressing malnutrition-related problems and sustaining pulse needs across the globe. There is a scarcity of information about underutilized legumes and is restricted to specific geographical zones with local or traditional significance. Around 700 genera and 20,000 species remain for domestication, improvement, and mainstreaming. Significant efforts in research, breeding, and development are required to transform existing local landraces of carefully selected, promising crops into types with broad adaptability and economic viability. Different breeding efforts and the use of biotechnological methods such as micro-propagation, molecular markers research and genetic transformation for the development of underutilized crops are offered to popularize lesser-known legume crops and help farmers diversify their agricultural systems and boost their profitability.

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Dehydration-induced alterations in growth and osmotic potential of callus from six tepary bean lines varying in drought resistance

Cited by 8 publications

References 10 publications

Comprehensive Assessment of Drought Resistance in Seedlings of Five Alfalfa (Medicago Sativa L.) Cultivars

Comprehensive Assessment of Drought Resistance in Seedlings of Five Alfalfa (Medicago Sativa L.) Cultivars

Oxidative damage, antioxidant mechanism and gene expression in tomato responding to salinity stress under in vitro conditions and application of iron and zinc oxide nanoparticles on callus induction and plant regeneration

Underutilized legumes: nutrient status and advanced breeding approaches for qualitative and quantitative enhancement

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