In silico promoter and expression analyses of rice Auxin Binding Protein 57 (ABP57)

Farah Afiqah  Baharuddin; Zhan Xuan Khong; Zamri Zainal; Noor Liyana Sukiran

doi:10.14719/pst.2021.8.3.1208

Authors

Farah Afiqah Baharuddin Department of Biological Sciences and Biotechnology, Faculty Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia https://orcid.org/0000-0003-0164-2462
Zhan Xuan Khong Department of Biological Sciences and Biotechnology, Faculty Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia https://orcid.org/0000-0003-3362-2722
Zamri Zainal 1-Department of Biological Sciences and Biotechnology, Faculty Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia. 2-Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia https://orcid.org/0000-0002-8324-5999
Noor Liyana Sukiran Department of Biological Sciences and Biotechnology, Faculty Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia https://orcid.org/0000-0002-9200-6009

DOI:

https://doi.org/10.14719/pst.2021.8.3.1208

Keywords:

abiotic stress, auxin Binding Protein, Expression analysis, promoter analysis, Rice

Abstract

Auxin Binding Protein 57 (ABP57) is one of the molecular components involved in rice response to abiotic stress. The ABP57 gene encodes an auxin receptor which functions in activating the plasma membrane H+-ATPase. Biochemical properties of ABP57 have been characterized; however, the function of ABP57, particularly on stress and hormone responses is still limited. This study was conducted to understand the regulation of ABP57 expression under abiotic stress. Thus, in silico identification of cis-acting regulatory elements (CAREs) in the promoter region of ABP57 was performed. Several motifs and transcription factor binding site (TFBS) that are involved in abiotic stress such as ABRE, DRE, AP2/EREBP, WRKY and NAC were identified. Next, expression analysis of ABP57 under drought, salt, auxin (IAA) and abscisic acid (ABA) was conducted by reverse transcription-PCR (RT-PCR) to verify the effect of these treatments on ABP57 transcript level. ABP57 was expressed at different levels in the shoot and root under drought conditions, and its expression was increased under IAA and ABA treatments. Moreover, our results showed that ABP57 expression in the root was more responsive to drought, auxin and ABA treatments compared to its transcript in the shoot. This finding suggests that ABP57 is a drought-responsive gene and possibly regulated by IAA and ABA.

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Author Biographies

Zamri Zainal, 1-Department of Biological Sciences and Biotechnology, Faculty Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia. 2-Institute of Systems Biology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

Professor, Dept. of Biological Sciences & Biotechnology, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

Noor Liyana Sukiran, Department of Biological Sciences and Biotechnology, Faculty Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

Senior Lecturer, Dept. of Biological Sciences & Biotechnology, Faculty of Science & Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia

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