High-quality evergreen azalea genome reveals tandem duplication-facilitated low-altitude adaptability and floral scent evolution

doi:10.1111/pbi.13680

KIB OpenIR

	High-quality evergreen azalea genome reveals tandem duplication-facilitated low-altitude adaptability and floral scent evolution
	Wang,Xiuyun ; Gao,Yuan ; Wu,Xiaopei ; Wen,Xiaohui ; Li,Danqing ; Zhou,Hong ; Li,Zheng ; Liu,Bing ; Wei,Jianfen ; Chen,Fei ; Chen,Feng ; Zhang,Chengjun; Zhang,Liangsheng ; Xia,Yiping
	2021
发表期刊	PLANT BIOTECHNOLOGY JOURNAL
ISSN	1467-7644
卷号	19 期号:12 页码:2544-2560
摘要	Azalea belongs to Rhododendron, which is one of the largest genera of flowering plants and is well known for the diversity and beauty in its more than 1000 woody species. Rhododendron contains two distinct groups: the most high-altitude and a few low-altitude species; however, the former group is difficult to be domesticated for urban landscaping, and their evolution and adaptation are little known. Rhododendron ovatum has broad adaptation in low-altitude regions but possesses evergreen characteristics like high-altitude species, and it has floral fragrance that is deficient in most cultivars. Here we report the chromosome-level genome assembly of R. ovatum, which has a total length of 549 Mb with scaffold N50 of 41 Mb and contains 41 264 predicted genes. Genomic micro-evolutionary analysis of R. ovatum in comparison with two high-altitude Rhododendron species indicated that the expansion genes in R. ovatum were significantly enriched in defence responses, which may account for its adaptability in low altitudes. The R. ovatum genome contains much more terpene synthase genes (TPSs) compared with the species that lost floral fragrance. The subfamily b members of TPS are involved in the synthesis of sesquiterpenes as well as monoterpenes and play a major role in flora scent biosynthesis and defence responses. Tandem duplication is the primary force driving expansion of defence-responsive genes for extensive adaptability to the low-altitude environments. The R. ovatum genome provides insights into low-altitude adaptation and gain or loss of floral fragrance for Rhododendron species, which are valuable for alpine plant domestication and floral scent breeding.
关键词	Azalea Rhododendron ovatum altitude adaptability floral scent terpene synthase (TPS) tandem duplication defence response PHYLOGENETIC ANALYSIS TERPENE SYNTHASES PLANT VOLATILES SALICYLIC-ACID JASMONIC ACID WHOLE-GENOME GENE DIVERSITY TOOL TRANSCRIPTOME
DOI	10.1111/pbi.13680
WOS记录号	WOS:000686953600001
引用统计	被引频次：41[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/73072
专题	中国科学院昆明植物研究所
作者单位	1.Zhejiang Univ, Coll Agr & Biotechnol, Genom & Genet Engn Lab Ornamental Plants, Hangzhou, Peoples R China 2.Fujian Agr & Forestry Univ, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Minist Educ Genet & Breeding & Multiple Utilizat, Key Lab,Coll Life Sci, Fuzhou, Peoples R China 3.Chinese Acad Sci, Kunming Inst Bot, Southwest China Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China 4.Hangzhou Landscaping Inc, Res & Dev Ctr, Hangzhou, Peoples R China 5.Nanjing Agr Univ, Coll Hort, Nanjing, Peoples R China 6.Univ Tennessee, Dept Plant Sci, Knoxville, TN USA
推荐引用方式 GB/T 7714	Wang,Xiuyun,Gao,Yuan,Wu,Xiaopei,et al. High-quality evergreen azalea genome reveals tandem duplication-facilitated low-altitude adaptability and floral scent evolution[J]. PLANT BIOTECHNOLOGY JOURNAL,2021,19(12):2544-2560.
APA	Wang,Xiuyun.,Gao,Yuan.,Wu,Xiaopei.,Wen,Xiaohui.,Li,Danqing.,...&Xia,Yiping.(2021).High-quality evergreen azalea genome reveals tandem duplication-facilitated low-altitude adaptability and floral scent evolution.PLANT BIOTECHNOLOGY JOURNAL,19(12),2544-2560.
MLA	Wang,Xiuyun,et al."High-quality evergreen azalea genome reveals tandem duplication-facilitated low-altitude adaptability and floral scent evolution".PLANT BIOTECHNOLOGY JOURNAL 19.12(2021):2544-2560.