Comparative transcriptome analysis provides novel insights into molecular response of salt-tolerant and sensitive polyembryonic mango genotypes to salinity stress at seedling stage.

Autor:	Perveen N; Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lakepost, Bengaluru, Karnataka, India., Dinesh MR; Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lakepost, Bengaluru, Karnataka, India., Sankaran M; Division of Fruit Crops, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lakepost, Bengaluru, Karnataka, India., Ravishankar KV; Division of Biotechnology, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lakepost, Bengaluru, Karnataka, India., Krishnajee HG; Division of Biotechnology, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lakepost, Bengaluru, Karnataka, India., Hanur VS; Division of Biotechnology, ICAR-Indian Institute of Horticultural Research, Hesaraghatta Lakepost, Bengaluru, Karnataka, India., Alamri S; Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, Saudi Arabia., Kesawat MS; School of Biological Sciences, Seoul National University, Seoul, Republic of Korea., Irfan M; School of Biological Sciences, Seoul National University, Seoul, Republic of Korea.
Jazyk:	angličtina
Zdroj:	Frontiers in plant science [Front Plant Sci] 2023 Apr 12; Vol. 14, pp. 1152485. Date of Electronic Publication: 2023 Apr 12 (Print Publication: 2023).
DOI:	10.3389/fpls.2023.1152485
Abstrakt:	Introduction: Increased soil salinity in the recent years has adversely affected the productivity of mango globally. Extending the cultivation of mango in salt affected regions warrants the use of salinity tolerant/resistant rootstocks. However, the lack of sufficient genomic and transcriptomic information impedes comprehensive research at the molecular level. Method: We employed RNA sequencing-based transcriptome analysis to gain insight into molecular response to salt stress by using two polyembryonic mango genotypes with contrasting response to salt stress viz., salt tolerant Turpentine and salt susceptible Mylepelian. Results: RNA sequencing by Novaseq6000 resulted in a total of 2795088, 17535948, 7813704 and 5544894 clean reads in Mylepelian treated (MT), Mylepelian control (MC), Turpentine treated (TT) and Turpentine control (TC) respectively. In total, 7169 unigenes annotated against all the five public databases, including NR, NT, PFAM, KOG, Swissport, KEGG and GO. Further, maximum number of differentially expressed genes were found between MT and MC (2106) followed by MT vs TT (1158) and TT and TC (587). The differentially expressed genes under different treatment levels included transcription factors (bZIP, NAC, bHLH), genes involved in Calcium-dependent protein kinases (CDPKs), ABA biosynthesis, Photosynthesis etc. Expression of few of these genes was experimentally validated through quantitative real-time PCR (qRT-PCR) and contrasting expression pattern of Auxin Response Factor 2 (ARF2), Late Embryogenesis Abundant (LEA) and CDPK genes were observed between Turpentine and Mylepelian. Discussion: The results of this study will be useful in understanding the molecular mechanism underlying salt tolerance in mango which can serve as valuable baseline information to generate new targets in mango breeding for salt tolerance. Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. (Copyright © 2023 Perveen, Dinesh, Sankaran, Ravishankar, Krishnajee, Hanur, Alamri, Kesawat and Irfan.)
Databáze:	MEDLINE
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