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The genomic and bulked segregant analysis of Curcuma alismatifolia revealed its diverse bract pigmentation

aBIOTECH 2022年第3期3卷 178-196页

作者： Xuezhu Liao Yuanjun Ye Xiaoni Zhang Dan Peng Mengmeng Hou Gaofei Fu Jianjun Tan Jianli Zhao Rihong Jiang Yechun Xu Jinmei Liu Jinliang Yang Wusheng Liu luke rtembrock Genfa Zhu Zhiqiang Wu Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen518120China Guangdong Provincial Key Lab of Ornamental Plant Germplasm Innovation and Utilization Environmental Horticulture Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou510640China Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology Yunnan UniversityKunming650504China Guangxi Engineering and Technology Research Center for Woody Spices Guangxi Key Laboratory for Cultivation and Utilization of Special Non-Timber Forest CropsGuangxi Forestry Research InstituteNanning530002China Department of Agronomy and Horticulture University of Nebraska-LincolnLincolnNE68583USA Department of Horticultural Science North Carolina State UniversityRaleighNC27607USA Department of Agricultural Biology Colorado State UniversityFort CollinsCO80523USA Kunpeng Institute of Modern Agriculture at Foshan Foshan528200China

Compared with most flowers where the showy part comprises specialized leaves(petals)directly subtending the reproductive structures,most Zingiberaceae species produce showy“flowers”through modifications of leaves(bracts)subtending the true flowers throughout an *** alismatifolia,belonging to the Zingiberaceae family,a plant species originating from Southeast Asia,has become increasingly popular in the flower market worldwide because of its varied and esthetically pleasing bracts produced in different ***,we present the chromosome-scale genome assembly of ***“Chiang Mai Pink”and explore the underlying mechanisms of bract *** genomic analysis revealed *** contains a residual signal of whole-genome *** genes,including pigment-related genes,exhibit functional and structural differentiation resulting in diverse bract colors among *** *** addition,we identified the key genes that produce different colored bracts in ***,such as F3′5'H,DFR,ANS and several transcription factors for anthocyanin synthesis,as well as chlH and CAO in the chlorophyll synthesis pathway by conducting transcriptomic analysis,bulked segregant analysis using both DNA and RNA data,and population genomic *** work provides data for understanding the mechanism of bract pigmentation and will accelerate breeding in developing novel cultivars with richly colored bracts in *** and related *** is also important to understand the variation in the evolution of the Zingiberaceae family.

关键词： Anthocyanin synthesis Siam tulip Floriculture Zingiberaceae Genome evolution

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A high-quality Bougainvillea genome provides new insights into evolutionary history and pigment biosynthetic pathways in the Caryophyllales

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Horticulture Research 2023年第8期10卷 85-96页

作者： Lan Lan Huiqi Zhao Suxia Xu Shenglong Kan Xiaoni Zhang Weichao Liu Xuezhu Liao luke rtembrock Yonglin Ren Wayne Reeve Jun Yang Zhiqiang Wu Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen518120China School of Medical Molecularand Forensic SciencesMurdoch University6150Western Australia90 South StreetMurdochAustralia Kunpeng Institute of Modern Agriculture at Foshan Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518124China Sanya Institute Hainan Academy of Agricultural SciencesSanya572025China Institute of Tropical Horticulture Research Hainan Academy of Agricultural SciencesHaikou571100China Fujian Key Laboratory of Subtropical Plant Physiology&Biochemistry Fujian Institute of Subtropical BotanyXiamen361006China Key Laboratory of Horticultural Plant Biology College of Horticulture and Forestry SciencesHuazhong Agricultural UniversityWuhan430070China Department of Agricultural Biology Colorado State UniversityFort CollinsCO80523USA

Bougainvillea is a perennial ornamental shrub that is highly regarded in ornamental horticulture around the ***,the absence of genome data limits our understanding of the pathways involved in bract coloration and ***,we report a chromosome-level assembly of the giga-genome of Bougainvillea×buttiana‘Mrs Butt’,a cultivar thought to be the origin of many other Bougainvillea *** assembled genome is∼5 Gb with a scaffold N50 of 151756278 bp and contains 86572 genes which have undergone recent whole-genome *** confirmed that multiple rounds of whole-genome multiplication have occurred in the evolutionary history of the Caryophyllales,reconstructed the relationship in the Caryophyllales at whole genome level,and found discordance between species and gene trees as the result of complex introgression *** investigated betalain and anthocyanin biosynthetic pathways and found instances of independent evolutionary innovations in the nine different Caryophyllales *** explore the potential formation mechanism of diverse bract colors in Bougainvillea,we analyzed the genes involved in betalain and anthocyanin biosynthesis and found extremely low expression of ANS and DFR genes in all cultivars,which may limit anthocyanin *** findings indicate that the expression pattern of the betalain biosynthetic pathway did not directly correlate with bract color,and a higher expression level in the betalain biosynthetic pathway is required for colored *** improved understanding of the correlation between gene expression and bract color allows plant breeding outcomes to be predicted with greater certainty.

关键词： evolutionary insight breeding

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