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Purwar Shalini,Chugh Vishal,Singh Poornima,Srivastava Akhilesh Kumar,Singh Akhilesh Kumar,Mishra Akhilesh Chandra,Singh Ashutosh,Singh Chandra Mohan 한국식물생명공학회 2024 Plant biotechnology reports Vol.18 No.1
Subtilisin-like serine proteases (SBT), a serine proteolytic enzymes play an important role in plant growth function and during different stresses responses. The systematic analysis of the SBT gene family in Musa acuminate (MaSBT) has been done and their responses to abiotic stresses in banana variety cv. G-9 were also analyzed. Total of 67 MaSBT genes were identified and based on phylogeny these were grouped into five districted subgroups. Cis-acting element analysis indicated that almost all MaSBT promoters contain regulatory elementary related to growth and development, hormonal regulation, and stress responses. The gene structure and domain analysis showed a maximum of seventeen exons and four functional domains in MaSBT. The 42 orthologous genes, 07 MaSBT paralogous genes were also identified through synteny analysis. The Ka /Ks study indicated that four MaSBT paralogous gene pairs were tandemly duplicated, while the other three were segmental duplications. Further, the expression pattern via RNA-seq data revealed that MaSBTs exhibited differential expres- sion specifically in response to the abiotic stress of low nitrogen. and also during the flowering time. The MaSBT-1.7 gene was found involved in the response to salt stress and flowering. These findings establish a cornerstone for future research on banana's salt stress mechanism. The study offers valuable insights into SBT encoding genes, shedding light on their roles in growth, development, and abiotic stress responses