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LEA gene expression asssessment in advanced mutant rice genotypes under drought stress


Kamarudin, Zarifth Shafika and Yusop, Mohd Rafii and Ismail, Mohd Razi and Tengku Muda Mohamed, Mahmud and Harun, Abdul Rahim and Yusuff, Oladosu and Magaji, Usman and Fatai, Arolu (2019) LEA gene expression asssessment in advanced mutant rice genotypes under drought stress. International Journal of Genomics, 2019. art. no. 8406036. pp. 1-8. ISSN 2314-436X; ESSN: 2314-4378


Late embryogenesis abundant (LEA) proteins are primarily found in plants stem, roots, and other organs and play significant roles in tolerance to several abiotic stresses. Plants synthesize a discrete set of LEA proteins in response to drought stress. In this study, the expression patterns of LEA genes were investigated in two advanced mutant rice genotypes subjected to the drought stress condition and different physiological traits including photosynthetic rate, leaf chlorophyll content, and photosystem II (PSII) photochemical efficiency (Fv/Fm) which were analyzed to confirm their drought tolerance. Five LEA genes (OsLEA1, OsLEA2, OsLEA3, OsLEA4, and OsLEA5) were used in the evaluation of rice genotypes and were significantly upregulated by more than 4-fold for MR219-4 and MR219-9. The upregulated genes by these two varieties showed high similarity with the droughttolerant check variety, Aeron1. This indicates that these advanced mutant genotypes have better tolerance to drought stress. The changes in the expression level of LEA genes among the selected rice genotypes under drought stress were further confirmed. Hence, LEA genes could be served as a potential tool for drought tolerance determination in rice. MR219-4 and MR219-9 were found to be promising in breeding for drought tolerance as they offer better physiological adaptation to drought stress.

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Official URL or Download Paper: https://www.hindawi.com/journals/ijg/2019/8406036/

Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture
Institute of Tropical Agriculture and Food Security
DOI Number: https://doi.org/10.1155/2019/8406036
Publisher: Hindawi
Keywords: Embryogenesis; Photochemical; Genotypes; LEA genes
Depositing User: Ms. Nida Hidayati Ghazali
Date Deposited: 17 Jun 2021 00:54
Last Modified: 17 Jun 2021 00:54
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1155/2019/8406036
URI: http://psasir.upm.edu.my/id/eprint/81207
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