Drought tolerance potential of Vigna mungo L. lines as deciphered by modulated growth, antioxidant defense, and nutrient acquisition patterns

Abstract

Water shortage is one of the major environmental constraints that hamper the crop productivity worldwide. The present study was aimed to examine the drought tolerance potential of seven cultivars/lines of Vigna mungo L. depending upon their germination behavior, seedling growth, antioxidative defense mechanism, and nutrient acquisition. An experiment was conducted in the growth chamber using petri-plates and laid out in a completely randomized design (CRD). Hoagland's nutrient solution supplemented with 12 % PEG-8000 (drought treatment) or without PEG-800 (control) was used. Drought stress significantly altered the germination attributes as well as biomass production of all the studied cultivars/lines. Least adversative effects of drought stress were recorded in lines M-01001-1 and M-6036-21, respectively. The studied cultivars/lines exhibited differential response for various biochemical attributes under drought stress. The maximum increase in MDA and SOD activities and protein content was recorded in line M-6036-21, while the maximum AsA was recorded in line M-01001-1. Drought stress resulted in a significant reduction of plant N, P, K, Ca, and Mg contents, while the plant iron (Fe) contents remained unaffected. Results revealed that cultivars/lines M-01001-1 and M-6036-21 exhibited enhanced performance in terms of nutrient acquisition when stressed by drought. Based upon seed germination behavior, plant biomass production, biochemical attributes and mineral elements, the cultivars/lines M-01001-1 and M-6036-21 were identified as drought tolerant, while M-97 and Arroj-II were identified as drought sensitive.

Alpha-tocopherol fertigation confers growth physio-biochemical and qualitative yield enhancement in field grown water deficit wheat (Triticum aestivum L.)

“…In present study α-Toc foliar application also increased the nutritional quality in terms of its own content in wheat seeds. It was found exogenous application of biochemicals/antioxidants not only regulates its own metabolism but also enhances the content of other antioxidative enzymes 5,42 and the content of non-enzymatic compounds 41 . Similar has been found in present study where α-Toc foliar application not only improved its metabolism in terms of increased content of α-Toc and γ-Toc but also other studied enzymatic and non-enzymatic compounds, as a result better seed nutritional quality in terms of antioxidative properties.…”

Fertigation of Ajwain (Trachyspermum ammi L.) with Fe-Glutamate Confers Better Plant Performance and Drought Tolerance in Comparison with FeSO4

“…Global environmental changes have altered the ongoing rainfall patterns all over the world, resulting in drought stress in some areas and flooding in others [3]. Under such conditions, the demand for food is increasing due to the deleterious effects of drought on crop production [4,5]. Different ways or techniques are being employed to handle this problem and improve and conserve plants.…”

Complex molecular mechanisms underlying MYMIV-resistance in Vigna mungo revealed by comparative transcriptome profiling

“…Vigna mungo (blackgram) is one of the most consumed grain legumes, cultivated mostly by the Asiatic populations for food and medicinal properties promoting nutritional benefits for human health 1,2 . Owing to its ability of symbiotic nitrogen fixation, blackgram seeds serve as a vital source of dietary protein.…”