Biochemistry And Microbial Sciences - Research Publications

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    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)
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    SUMO and SUMOylation in Plants: Ignored Arsenal to Combat Abiotic Stress
    (Springer, 2023-10-11T00:00:00) Yadav, Radheshyam; Chaudhary, Shivam; Ramakrishna, Wusirika
    Plants being fixed in one place are exposed to various episodes of different abiotic stresses such as drought, salinity, cold, and heat. SUMOylation is one of the ignored arsenals that help plants to develop tolerance to these external abiotic stresses. SUMOylation of target protein generally leads to changes in its transportation, transcriptional regulation, apoptosis, stability, and response to different stresses. de-SUMOylation of substrate proteins by SUMO proteases also play a crucial role in maintaining the cellular pool of SUMO. This review highlights different components of SUMOylation and their role in different abiotic stresses and their ability to contribute to plant abiotic stress tolerance. Furthermore, the current perspective of SUMOylation in phytochrome signaling, nutrient and ROS homeostasis is discussed. The full potential of SUMOylation in combination with other molecular approaches to combat abiotic stresses in plants is not yet realized. As research in this area continues to advance, it is crucial to explore the interplay between SUMOylation and other signaling networks, as well as the crosstalk with different stress-responsive pathways. Additionally, understanding the specificity and dynamics of SUMOylation in response to specific stressors can provide valuable insights for designing targeted interventions to enhance plant stress tolerance. In conclusion, the review highlights the emerging significance of SUMOylation in plant stress responses and its potential in contributing to plant resilience against abiotic stresses. � 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.