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Plant J

Title:		A chromosome-level genome of Syringa oblata provides new insights into chromosome formation in Oleaceae and evolutionary history of lilacs
Author(s):		Wang Y; Lu L; Li J; Li H; You Y; Zang S; Zhang Y; Ye J; Lv Z; Zhang Z; Qin Y; Zhang H; Xia F; Li H; Zhang H; Fan P; Shi L; Liang Z; Cui H;
Address:		"Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Xiangshan, Beijing, 100093, China. Beijing Key Laboratory of Grape Science and Enology, Institute of Botany, Chinese Academy of Sciences, Xiangshan, Beijing, 100093, China. State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China. University of Chinese Academy of Sciences, Beijing, 100049, China. Shandong University of Traditional Chinese Medicine, Jinan, 250300, China. College of Forestry, Inner Mongolian Agricultural University, Hohhot, 010019, China. Institute of Gardening, Hohhot, Inner Mongolia, Hohhot, 010030, China"
Journal Title:		Plant J
Year:		2022
Volume:		20220714
Issue:		3
Page Number:		836 - 848
DOI:		10.1111/tpj.15858
ISSN/ISBN:		1365-313X (Electronic) 0960-7412 (Linking)
Abstract:		"Lilacs (Syringa L.), a group of well-known ornamental and aromatic woody plants, have long been used for gardening, essential oils and medicine purposes in East Asia and Europe. The lack of knowledge about the complete genome of Syringa not only hampers effort to better understand its evolutionary history, but also prevents genome-based functional gene mining that can help in the variety improvement and medicine development. Here, a chromosome-level genome of Syringa oblata is presented, which has a size of 1.12 Gb including 53 944 protein coding genes. Synteny analysis revealed that a recent duplication event and parallel evolution of two subgenomes formed the current karyotype. Evolutionary analysis, transcriptomics and metabolic profiling showed that segment and tandem duplications contributed to scent formation in the woody aromatic species. Moreover, phylogenetic analysis indicated that S. oblata shared a common ancestor with Osmanthus fragrans and Olea europaea approximately 27.61 million years ago (Mya). Biogeographic reconstruction based on a resequenced data set of 26 species suggested that Syringa originated in the northern part of East Asia during the Miocene (approximately 14.73 Mya) and that the five Syringa groups initially formed before the Late Miocene (approximately 9.97 Mya). Furthermore, multidirectional dispersals accompanied by gene introgression among Syringa species from Northern China during the Miocene were detected by biogeographic reconstruction. Taken together, the results showed that complex gene introgression, which occurred during speciation history, greatly contributed to Syringa diversity"
Keywords:		Chromosomes *Oleaceae/genetics Phylogeny *Syringa/genetics Transcriptome Syringa biogeographic dispersal floral scent genome ploidy evolution;
Notes:		"MedlineWang, Yi Lu, Limin Li, Jingrui Li, Huayang You, Yichen Zang, Shuying Zhang, Yongqing Ye, Jianfei Lv, Zemin Zhang, Zhaoyu Qin, Yongsheng Zhang, Hongling Xia, Fei Li, Hui Zhang, Huijin Fan, Peige Shi, Lei Liang, Zhenchang Cui, Hongxia eng Research Support, Non-U.S. Gov't England 2022/06/09 Plant J. 2022 Aug; 111(3):836-848. doi: 10.1111/tpj.15858. Epub 2022 Jul 14"