4.7 Article

Genome-wide analysis reveals widespread roles for RcREM genes in floral organ development in Rosa chinensis

期刊

GENOMICS
卷 113, 期 6, 页码 3881-3894

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.ygeno.2021.09.017

关键词

Rosa chinensis; REM gene family; Floral organ mutation; Gene expression profiles; Flower development

资金

  1. National Key Research and Development Program of China [2020YFE0202900]
  2. Natural Science Foundation of Jiangsu Province [BK20180543]
  3. NSFC, China [31801890, 32172615, 31972449]
  4. Fundamental Research Funds for the Central Universities, China [KYZZ2021003, KJQN201927, KYZ201831, KYZZ201918]
  5. high-performance computing platform of Bioinformatics Center, Nanjing Agricultural University

向作者/读者索取更多资源

Members of the REM gene family in Rosaceae, particularly in rose, have undergone significant expansion primarily through tandem duplication and show specific expression in reproductive organs. These genes play important roles in floral organ identity and are co-expressed with key genes regulating flowering time, floral organ development, and cell proliferation and expansion in R. chinensis.
Members of the REM (Reproductive Meristem) gene family are expressed primarily in reproductive meristems and floral organs. However, their evolution and their functional profiles in flower development remain poorly understood. Here, we performed genome-wide identification and evolutionary analysis of the REM gene family in Rosaceae. This family has been greatly expanded in rose (Rosa chinensis) compared to other species, primarily through tandem duplication. Expression analysis revealed that most RcREM genes are specifically expressed in reproductive organs and that their specific expression patterns are dramatically altered in rose plants with mutations affecting floral organs. Protein-protein interaction analysis indicated that RcREM14 interact with RcAP1 (one of the homology of A class genes in ABCDE model), highlighting the roles of RcREM genes in floral organ identity. Finally, co-expression network analysis indicated that RcREM genes are co-expressed with a high proportion of key genes that regulate flowering time, floral organ development, and cell proliferation and expansion in R. chinensis.

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