Browsing by Author "Bokolia, Muskan"

Now showing 1 - 3 of 3

Exogenous application of biostimulants for As stress tolerance in crop plants
(Elsevier, 2023-08-04T00:00:00) Garg, Tashima; Arora, Bhumika; Bokolia, Muskan; Joshi, Anjali; Kumar, Vinay; Kumar, Avneesh; Kaur, Simranjeet
Arsenic (As) is a nonessential toxic metalloid existing in two different inorganic forms: arsenite As (III) and arsenate As (V) which cause hindrance in plant developmental processes and are hazardous to human beings. As contamination is a major environmental issue as it stimulates physiological and metabolic dysfunctions, for instance, nutrient and redox imbalance, rate of photosynthesis, and membrane integrity, ultimately leading to reduced crop yield. Plants show detoxification processes to overcome As toxic effects by effluxing excess metal ions through metal transporters, accumulating As in the vacuole, and producing antioxidant enzymes. In recent times, the exogenous application of various biostimulants such as hormones, antioxidants, osmolytes, and others is being explored to combat As-mediating injuries to crop plants. These compounds are effective in improving seed germination, antioxidant enzyme activity, plant biomass, and overall growth of the plants. The objective of this chapter is to provide recent knowledge on the biostimulants hallmarks to alleviate As stress in crop plants. � 2023 Elsevier Inc. All rights reserved.
Exogenous application of biostimulants for As stress tolerance in crop plants
(Elsevier, 2023-08-04T00:00:00) Garg, Tashima; Arora, Bhumika; Bokolia, Muskan; Joshi, Anjali; Kumar, Vinay; Kumar, Avneesh; Kaur, Simranjeet
Arsenic (As) is a nonessential toxic metalloid existing in two different inorganic forms: arsenite As (III) and arsenate As (V) which cause hindrance in plant developmental processes and are hazardous to human beings. As contamination is a major environmental issue as it stimulates physiological and metabolic dysfunctions, for instance, nutrient and redox imbalance, rate of photosynthesis, and membrane integrity, ultimately leading to reduced crop yield. Plants show detoxification processes to overcome As toxic effects by effluxing excess metal ions through metal transporters, accumulating As in the vacuole, and producing antioxidant enzymes. In recent times, the exogenous application of various biostimulants such as hormones, antioxidants, osmolytes, and others is being explored to combat As-mediating injuries to crop plants. These compounds are effective in improving seed germination, antioxidant enzyme activity, plant biomass, and overall growth of the plants. The objective of this chapter is to provide recent knowledge on the biostimulants hallmarks to alleviate As stress in crop plants. � 2023 Elsevier Inc. All rights reserved.
Genome-wide identification of NAC transcription factors in Avena sativa under salinity stress
(Elsevier B.V., 2023-10-29T00:00:00) Bokolia, Muskan; Singh, Baljinder; Kumar, Avneesh; Goyal, Nandni; Singh, Kashmir; Chhabra, Ravindresh
Background: NAC (NAM, ATAF1/2, and CUC2) is one of the most prominent family of plant-specific transcription factors that play diverse roles in plant growth and development as well as in abiotic stress responses in plants. The members of this family are recognized by presence of typical conserved NAC domain at the N-terminal and diverse C-terminal region. Results: In this study, we have identified 101 Avena sativa NAC (AsNAC) genes from the available Avena genome database. Genes were analyzed for their physicochemical properties, conserved motifs, gene structure, chromosomal localization, phylogenetic relationship, and cis-acting elements. The phylogenetic analysis illustrated that there were 15 subgroups in both Avena sativa and Arabidopsis thaliana. Mainly four types of cis-acting regulatory elements were present in the promoter regions of NAC genes, including hormone-responsive, light-responsive, stress-responsive and growth and developmental responsive elements. The chromosomal mapping analysis concluded that 101 NAC genes of Avena sativa were unevenly distributed on 21 chromosomes. Expression analysis identified 27 Avena NAC genes that respond to salt stress based on transcriptomic data analysis available on the NCBI SRA database. Significance: The genome-wide identification and molecular analysis of NAC TFs involved in environmental stress responses have the ability to overcome the limitations that came across in producing the transgenic crops with superior quality and improved production under abiotic stressed conditions. Future prospectives: These NAC genes may be considered as potential candidates for further explorations of functional analysis and could be used to develop stress tolerant lines in Avena sativa. � 2023 The Author(s)