Genome-wide investigation and expression analysis of APETALA-2 transcription factor subfamily reveals its evolution, expansion and regulatory role in abiotic stress responses in Indica Rice (Oryza sativa L. ssp. indica)

文献类型： 外文期刊

第一作者： Ahmed, Sohaib

作者： Ahmed, Sohaib;Azhar, Muhammad Tehseen;Waqas, Muhammad;Atif, Rana Muhammad;Rashid, Muhammad Abdul Rehman;Rashid, Muhammad Abdul Rehman;Zafar, Syed Adeel;Uzair, Muhammad;Azhar, Muhammad Tehseen;Rana, Iqrar Ahmad;Azeem, Farrukh;Chung, Gyuhwa;Ali, Zulfiqar;Atif, Rana Muhammad

作者机构：

关键词： APETALA-2; Gene expression; Stress response; Phylogenetic analysis

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2021 年 113 卷 1 期

页码：

收录情况： SCI

摘要： Rice is an important cereal crop that serves as staple food for more than half of the world population. Abiotic stresses resulting from changing climatic conditions are continuously threating its yield and production. Genes in APETALA-2 (AP2) family encode transcriptional regulators implicated during regulation of developmental processes and abiotic stress responses but their identification and characterization in indica rice was still missing. In this context, twenty-six genes distributed among eleven chromosomes in Indica rice encoding AP2 transcription factor subfamily were identified and their diverse haplotypes were studied. Phylogenetic analysis of OsAP2 TF family-members grouped them into three clades indicating conservation of clades among cereals. Segmental duplications were observed to be principal route of evolution, supporting the higher positive selection-pressure, which were estimated to be originated about 10.57 to 56.72 million years ago (MYA). Conserved domain analysis and intron-exon distribution pattern of identified OsAP2s revealed their exclusive distribution among the specific clades of the phylogenetic tree. Moreover, the members of osa-miR172 family were also identified potentially targeting four OsAP2 genes. The real-time quantitative expression profiling of OsAP2s under heat stress conditions in contrasting indica rice genotypes revealed the differential expression pattern of OsAP2s (6 genes up regulated and 4 genes down-regulated) in stressand genotype-dependent manner. These findings unveiled the evolutionary pathways of AP2-TF in rice, and can help the functional characterization under developmental and stress responses

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序