A chromosome-level genome assembly for Erianthus fulvus provides insights into its biofuel potential and facilitates breeding for improvement of sugarcane  

作　　者：Ling Kui Aasim Majeed Xianhong Wang Zijiang Yang Jian Chen Lilian He Yining Di Xuzhen Li Zhenfeng Qian Yinming Jiao Guoyun Wang Lufeng Liu Rong Xu Shujie Gu Qinghui Yang Shuying Chen Hongbo Lou Yu Meng Linyan Xie Fu Xu Qingqing Shen Amit Singh Karl Gruber Yunbing Pan Tingting Hao Yang Dong Fusheng Li 

机构地区：[1]Sugarcane Research Institute of Yunnan Agricultural University,Kunming,Yunnan 650201,China [2]Shenzhen Qianhai Shekou Free Trade Zone Hospital,Shenzhen 518067,China [3]Plant Molecular Genetics Laboratory,School of Agricultural Biotechnology,Punjab Agricultural University,Ludhiana,India [4]College of Agronomy and Biotechnology of Yunnan Agricultural University,Kunming,Yunnan 650201,China [5]The Key Laboratory of Crop Production and Smart Agriculture of Yunnan Province,Kunming,Yunnan 650201,China [6]International Genome Center,Jiangsu University,Zhenjiang,Jiangsu 212013,China [7]State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan,Yunnan Agricultural University,Kunming,Yunnan 650201,China [8]Yunnan Plateau Characteristic Agriculture Industry Research Institute,Kunming,Yunnan 650201,China [9]Institute of Molecular Biosciences,University of Graz,8010 Graz,Austria

出　　处：《Plant Communications》2023年第4期189-207,共19页植物通讯（英文）

基　　金：supported by grants from the Major Science and Technology Projects in Yunnan Province(202202AE090021);a special project of Yunnan Key Laboratory of Crop Production and Smart Agriculture(202105AG070007);a sub-project of the National Key Research and Development Program of China(2018YFD1000503);the National Natural Science Foundation of China(31960451,31560417);a Key Project of Applied Basic Research Program of Yunnan Province(2015FA024);the ESI Discipline Promotion Program of Yunnan Agricultural University(2019YNAUESIMS01).

摘　　要：Erianthus produces substantial biomass,exhibits a good Brix value,and shows wide environmental adaptability,making it a potential biofuel plant.In contrast to closely related sorghum and sugarcane,Erianthus can grow in degraded soils,thus releasing pressure on agricultural lands used for biofuel production.However,the lack of genomic resources for Erianthus hinders its genetic improvement,thus limiting its potential for biofuel production.In the present study,we generated a chromosome-scale reference genome for Erianthus fulvus Nees.The genome size estimated by flow cytometry was 937 Mb,and the assembled genome size was 902 Mb,covering 96.26%of the estimated genome size.A total of 35065 proteincoding genes were predicted,and 67.89%of the genome was found to be repetitive.A recent wholegenome duplication occurred approximately 74.10 million years ago in the E.fulvus genome.Phylogenetic analysis showed that E.fulvus is evolutionarily closer to S.spontaneum and diverged after S.bicolor.Three of the 10 chromosomes of E.fulvus formed through rearrangements of ancestral chromosomes.Phylogenetic reconstruction of the Saccharum complex revealed a polyphyletic origin of the complex and a sister relationship of E.fulvus with Saccharum sp.,excluding S.arundinaceum.On the basis of the four amino acid residues that provide substrate specificity,the E.fulvus SWEET proteins were classified as monoand disaccharide sugar transporters.Ortho-QTL genes identified for 10 biofuel-related traits may aid in the rapid screening of E.fulvus populations to enhance breeding programs for improved biofuel production.The results of this study provide valuable insights for breeding programs aimed at improving biofuel production in E.fulvus and enhancing sugarcane introgression programs.

关 键 词：BIOFUEL cold stress Erianthus fulvus QTLS reference genome SWEET family 

分 类 号：O62[理学—有机化学]