文献类型：期刊文献

英文题名：Transcriptomic Time-Course Sequencing: Insights into the Cell Wall Macromolecule-Mediated Fruit Dehiscence during Ripening in Camellia oleifera

作者：Sheng, Yu[1,2] Yao, Xiaohua[1] Liu, Linxiu[1,3] Yu, Chunlian[2] Wang, Kunxi[2] Wang, Kailiang[1] Chang, Jun[1] Chen, Juanjuan[1,3] Cao, Yongqing[1]

第一作者：盛宇;Sheng, Yu

通信作者：Yao, XH[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, State Key Lab Tree Genet & Breeding, Key Lab Tree Breeding Zhejiang Prov, Hangzhou 311400, Peoples R China;[2]Changshan Country Oil Tea Ind Dev Ctr, Quzhou Doctoral Innovat Workstat, Quzhou 323900, Peoples R China;[3]Nanjing Forestry Univ, Coll Forestry, Nanjing 210037, Peoples R China

年份：2023

卷号：12

期号：18

外文期刊名：PLANTS-BASEL

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001083906000001)】；

基金：This research was funded by Fundamental Research Funds for the Central Non-profit Research Institution of Chinese Academy of Forestry (CAFYBB2022XA003-2), the National Key R & D Program of China (2019YFD1001602), and Fundamental Research Funds for the Central Non-profit Research Institution of Chinese Academy of Forestry (CAFYBB2017ZA004-1)

语种：英文

外文关键词：Camellia oleifera; transcriptome; cell wall; fruit dehiscence

摘要：Camellia oleifera (C. oleifera), one of the world's four major edible woody oil crops, has been widely planted in southern China's subtropical region for the extremely high nutritional and health benefits of its seed oil. Timing and synchronization of fruit dehiscence are critical factors influencing the oil output and quality, as well as the efficiency and cost of harvesting C. oleifera, yet they extremely lack attention. To gain an understanding of the molecular basis underlying the dehiscence of C. oleifera fruit, we sampled pericarp-replum tissues containing dehiscence zones from fruits at different developmental stages and performed time-series transcriptomic sequencing and analysis for the first time. Statistical and GO enrichment analysis of differentially expressed genes revealed that drastic transcriptional changes occurred over the last short sampling interval (4 days, 18th-22nd October), which directed functional classifications link to cell wall and cell wall macromolecule activity. WGCNA further showed that factors controlling cell wall modification, including endo-1,3;1,4-beta-D-glucanase, WAT1-like protein 37, LRR receptor-like serine/threonine-protein kinase, and cellulose synthase A catalytic subunit, were identified as core members of the co-expression network of the last stage highly related modules. Furthermore, in these modules, we also noted genes that were annotated as coding for polygalacturonase and pectinesterase, two pectinases that were expected to be major players in cell separation during dehiscence. qRT-PCR further confirmed the expression profiles of these cell wall modification relating factors, which possessed a special high transcriptional abundance at the final stage. These results suggested the cell wall associated cell separation, one of the essential processes downstream of fruit dehiscence, happened in dehiscing fruit of C. oleifera during ripening. Hydrolases acting on cell wall components are good candidates for signal mediating dehiscence of C. oleifera fruit. In conclusion, our analysis provided insights into the cell wall macromolecule-mediated fruit dehiscence during ripening in C. oleifera.