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5. Genome‐wide study of OsWRKY gene in Oryza sativa subsp. japonica.

Author

Meher, Jhumishree, Narware, Jeetu, and Masurkar, Prahlad

Subjects
*TRANSCRIPTION factors, *RICE, *ZINC-finger proteins, *SEQUENCE alignment, *ABIOTIC stress
Abstract

WRKY transcription factor (TF) family is well known to govern essential physiological functioning as well as regulate plant response to biotic and abiotic stress. In this study, we have identified 108 OsWRKY genes in the genome of Oryza sativa subsp. japonica, using the updated genomic data from the Rice Annotation Project Database and Oryzabase, which were further used to conduct the phylogenetic study, motif analysis, gene structure analysis, chromosomal mapping, and prediction of sub‐cellular localization. The multiple sequence alignment OsWRKY proteins revealed the presence of nine different types of alterations in the conserved heptapeptide sequence WRKYGQK associated with 19 OsWRKY genes. Physiochemical analysis discloses the hydrophobic amino acid‐rich, thermally stable, and polar nature of OsWRKY proteins. These genes were noted as highly conserved between the two cultivated sub‐species of Oryza sativa, that is Indica and japonica type. Additionally, from motif analysis, we have found a new motif, which was categorized as hAT family C‐terminal dimerization region associated with four members of group IIc. We have identified 21 stress‐responsive OsWRKY genes, and their significance to the different biotic and abiotic stress‐mediated cascades was further evaluated by analysing 1500 kb upstream sequences and this disclosed the presence of important phytohormone‐responsive cis‐elements in the OsWRKY gene, suggesting its direct involvement in defence against a wide range of external stressors and these 21 OsWRKY genes are tentatively listed as possible candidates for more study. [ABSTRACT FROM AUTHOR]

Published
2024
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8. Management of Fusarium udum Causing Wilt of Pigeon Pea

Author

Kumar, Gagan, Bajpai, Raina, Teli, Basavaraj, Meher, Jhumishree, Rashid, Md. Mahtab, Sarma, Birinchi Kumar, Gupta, Vijai Kumar, Series Editor, Tuohy, Maria G., Series Editor, Singh, Bhim Pratap, editor, Singh, Garima, editor, Kumar, Krishna, editor, Nayak, S. Chandra, editor, and Srinivasa, N., editor

Published
2020
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9. List of Contributors

Author

Ansari, Waquar Akhter, primary, Avasthi, Shubhi, additional, Bajpai, Raina, additional, Chaudhari, Anand Kumar, additional, Choudhary, Krishna Kumar, additional, Das, Somenath, additional, Dikshit, Anupam, additional, Gautam, Ajay Kumar, additional, Gond, Surendra K., additional, Gupta, Akanksha, additional, Hora, Amandeep, additional, Krishna, Ram, additional, Kumar, Ajay, additional, Kumar, Akshay, additional, Kumari, Baby, additional, Lata, Rusi, additional, Mallick, M.A., additional, Mani, Mahendra, additional, Meher, Jhumishree, additional, Mishra, Pooja, additional, Mukherjee, Arpan, additional, Pandey, Anand, additional, Pandey, K.D., additional, Patel, Jaisingh, additional, Prakash, Bhanu, additional, Rai, Snigdha, additional, Rashid, Md. Mahtab, additional, Shrivastava, Alok Kumar, additional, Singh, Amit Kishore, additional, Singh, Anand Vikram, additional, Singh, Divya, additional, Singh, Kshitij Kumar, additional, Singh, Major, additional, Singh, Monika, additional, Singh, Prashant Kumar, additional, Singh, Prem Pratap, additional, Singh, Sandeep Kumar, additional, Singh, Vipin Kumar, additional, Solanki, Manoj K., additional, Srivastava, Akhileshwar Kumar, additional, Srivastava, Meenakshi, additional, Srivastava, Piush, additional, Teli, Basavaraj, additional, Tripathi, Arpita, additional, Verma, Hariom, additional, Verma, Jay Prakash, additional, Wenjing, Wang, additional, and Yadav, Sudheer Kumar, additional

Published
2019
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15. Binding of stress-responsive OsWRKY proteins through WRKYGQK heptapeptide residue with the promoter region of two rice blast disease resistance genes Pi2and Pi54is important for development of blast resistance

Author

Meher, Jhumishree, Sarkar, Ankita, and Sarma, Birinchi Kumar

Abstract

Molecular docking was done to investigate the interactions between five differentially expressed rice WRKY proteins when challenged with the rice blast disease caused by Magnaporthe oryzaeand drought stresses applied either individually or overlapped, with the promoter region of two blast resistance genes (Pi2and Pi54). Molecular docking was performed using the HDOCK server. Initially, the homology models for each of the five rice WRKY proteins were prepared using I-TASSER server, and then the secondary structure as well as the DNA-binding pockets were predicted using PSIPRED and BindUP servers, respectively. The molecular docking study revealed a differential binding pattern of the rice WRKYs with the two blast resistance genes. The WRKY proteins (OsWRKY88 and OsWRKY102), whose transcript levels decrease when drought and blast stresses are overlapped, interact with the two resistance genes mostly involving the residues of the zinc finger structure. On the other hand, the WRKY proteins (OsWRKY53-1 and OsWRKY113), whose transcript levels did not reduce significantly when challenged by drought and blast overlapped condition compared to individual treatment of blast, interact mostly involving the residues of the conserved WRKYGQK heptapeptide sequence. Interestingly, the protein OsWRKY74 whose transcript levels are unaffected in both individual and overlapped stresses, interacts with both the blast resistance genes involving few residues of both WRKYGQK heptapeptide and the zinc finger structure. The findings thus indicate that the interaction of OsWRKY proteins involving the conserved WRKYGQK heptapeptide sequence with the blast resistance genes Pi2and Pi54is important to mitigate the blast challenge in rice even during overlapping challenges of drought.

Published
2023
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