文献类型：期刊文献

英文题名：Advances in the Evolutionary Mechanisms and Genomic Studies of Sexual Differentiation in Lauraceae Plants

作者：Wang, Siqi[1,2,3] Wang, Yangdong[1,3] Chen, Yicun[1,3] Zhao, Yunxiao[1,3] Gao, Ming[1,3]

第一作者：Wang, Siqi

通信作者：Gao, M[1];Gao, M[2]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Nanjing Forestry Univ, Coll Forestry, Nanjing 210037, Peoples R China;[3]Zhejiang Key Lab Forest Genet & Breeding, Hangzhou 311400, Peoples R China

年份：2025

卷号：26

期号：9

外文期刊名：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

收录：;Scopus(收录号：2-s2.0-105004891271);WOS:【SCI-EXPANDED(收录号:WOS:001486486800001)】；

基金：This work was supported by Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding [Grant No. 2021C02070-3], the Fundamental Research Funds of CAF [Grant No. CAFYBB2020QA002].

语种：英文

外文关键词：Lauraceae; sexual differentiation; genome duplication; sex chromosomes; molecular breeding; ecological restoration

摘要：The Lauraceae family, a keystone group in subtropical evergreen broad-leaved forest ecosystems, exhibits exceptional diversity in sexual systems (including hermaphroditic flowers, functionally unisexual flowers, and pseudo-dioecy), serving as a natural model for studying plant sexual differentiation mechanisms. This review synthesizes advances in the evolutionary mechanisms and genomic studies of sexual differentiation in Lauraceae, focusing on three key areas: (1) the evolution of taxonomic classification and floral morphology, (2) molecular trajectories of sexual differentiation, and (3) challenges and future directions in sex determination research (e.g., sex-linked marker development and gene-editing-assisted breeding). Morphological and phylogenetic analyses suggest that ancestral Lauraceae species were late Cretaceous hermaphroditic trees, with recent radiation of unisexual lineages (e.g., Cinnamomum and Laurus) linked to pollinator pressure, genome duplication events (WGD), and incipient sex chromosome evolution. Despite progress, critical challenges remain, including unresolved thresholds for sex chromosome origination, unquantified molecular pathways integrating environmental signals (e.g., photoperiod, temperature) with genetic networks, and the lack of efficient sex-specific markers and genetic transformation systems. Future studies should integrate single-cell omics, epigenetic profiling, and cross-species comparative genomics to elucidate spatiotemporal dynamics and evolutionary drivers of sexual differentiation. These efforts will advance genetic improvement and ecological restoration strategies. This review provides a systematic framework for advancing plant sexual evolution theory and promoting sustainable utilization of Lauraceae resources.