Combined genomic, transcriptomic, and metabolomic an alyses provide in sights into chayote (Sechium edule) evolution and fruit development  

作　　者：Anzhen Fu Qing Wang Jianlou Mu Lili Ma Changlong Wen Xiaoyan Zhao Lipu Gao Jian Li Kai Shi Yunxiang Wang Xuechuan Zhang Xuewen Zhang Fengling Wang Donald Grierson Jinhua Zuo 

机构地区：[1]Key Laboratory of Vegetable Postharvest Processing,Ministry of Agriculture,Beijing Key Laboratory of Fruits and Vegetable Storage and Processing,Key Laboratory of Biology and Genetic Improvement of Horticultural Crops(North China)of Ministry of Agriculture,Key Laboratory of Urban Agriculture(North)of Ministry of Agriculture,The Collaborative Innovation Center of Cueurbits Crops,Beijing Vegetable Research Center,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China [2]College of Food Science and Technology,Hebei Agricultural University,Baoding 071001,China [3]Beijing Advanced Innovation Center for Food Nutrition and Human Health,Beijing Technology and Business University,Beijing 100048,China [4]Department of Horticulture,Zhejiang University,Hangzhou 310058,China [5]Beijing Academy of Forestry and Pomology Sciences,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100093,China [6]Biomarker Technologies Corporation,Beijing 101300,China [7]School of Biosciences,University of Nottingham,Sutt on Bonington Campus,Loughborough,Leicestershire LE125RD,UK

出　　处：《Horticulture Research》2021年第1期250-264,共15页园艺研究（英文）

基　　金：the Beijing Municipal Science and Technology Commission(Z191100008619004 and Z191100004019010);the Key Project"Science and Technology Boost the Feonomy 2020",the Special Innovation Ability Construction Fund of Beijing Academy of Agricultural and Forestry Sciences(20180404 and 20200427);the China Agriculture Research System Project(CARS-23);the National Key Research and Ripening Program of China,Collaborative Innovation Center of Beijing Academy of Agricultural and Forestry Sciences(201915);the Young Investigat or Fund of Beijing Academy of Agricultural and Forestry Sciences(202016);the National Natural Scienee Foundation of China(31772022);the Natural Scienee Foundation of Beijing(6182016).

摘　　要：Chayote(Sechium edule)is an agricultural crop in the Cucurbitaceae family that is rich in bioactive components.To enhance genetic research on chayote,we used Nanopore third-generation sequencing combined with Hi-C data to assemble a draft chayote genome.A chromosome-level assembly anchored on 14 chromosomes(N50 contig and scaffold sizes of 8.40 and 46.56 Mb,respectively)estimated the genome size as 606.42 Mb,which is large for the Cucurbitaceae,with 65.94%(401.08 Mb)ofthe genome comprising repetitive sequences;28,237 protein-coding genes were predicted.Comparative genome analysis indicated that chayote and snake gourd diverged from sponge gourd and that a whole-genome duplication(WGD)event occurred in chayote at 25±4 Mya.Transcriptional and metabolic analysis revealed genes involved in fruit texture,pigment,fl avor,fl avonoids,antioxidants,and plant hormones during chayote fruit development.The analysis of the genome,transcriptome,and metabolome provides insights into chayote evolution and lays the groundwork for future research on fruit and tuber development and genetic improvements in chayote.

关 键 词：EVOLUTION SPONGE fruit 

分 类 号：Q943.2[生物学—植物学]