Background:The Hainan Partridge(Arborophila ardens,Phasianidae,Galliformes) is an endemic species of Hainan Island,China,and it is classified as globally vulnerable species.There are at least 16 species in genus Arbor...Background:The Hainan Partridge(Arborophila ardens,Phasianidae,Galliformes) is an endemic species of Hainan Island,China,and it is classified as globally vulnerable species.There are at least 16 species in genus Arborophila and no genome sequence is available.Methods:The whole genome of Hainan Partridge was de novo sequenced(with shotgun approach on the Illumina 2000 platform) and assembled.Results:The genome size of Arborophila ardens is about 1.05 Gb with a high N50 scaffold length of 8.28 Mb and it is the first high quality genome announced in Arborophila genus.About 9.19% of the genome was identified as repeat sequences and about 5.88 million heterozygous SNPs were detected.A total of 17,376 protein-coding genes were predicted and their functions were annotated.The genome comparison between Hainan Partridge and Red Junglefowl(Gallus gallus) demonstrated a conserved genome structure.The phylogenetic analysis indicated that the Hainan Partridge possessed a basal phylogenetic position in Phasianidae and it was most likely derived from a common ancestor approximately 36.8 million years ago(Mya).We found that the Hainan Partridge population had experienced bottleneck and its effective population decreased from about 1,040,000 individuals 1.5 Mya to about 200,000 individuals 0.2 Mya,and then recovered to about 460,000 individuals.The number of 1:1 orthologous genes that were predicted to have undergone positive selection in the Hainan Partridge was 504 and some environmental adaptation related categories,such as response to ultraviolet radiation were represented in GO distribution analysis.Conclusions:We announced the first high quality genome in Arborophila genus and it will be a valuable genomic resource for the further studies such as evolution,adaption,conservation,not only on Hainan Partridge but also on Arborophila or Phasianidae species.展开更多
Enoch Arden is a narrative poem by Alfred Tennyson,which turns out to be the record of the process of its hero's spiritual journey and can be interpreted from the perspectives of the description of natural landscape.
Elizabeth Arden伊丽莎白雅顿八小时润泽霜自1933年上市以来，以前所未有的修复、舒缓及滋润肌肤功效著称于世70年，它深得专业模特、演艺界专业化妆人员以及世界各地女士们的喜爱．并成为极为抢手的美容化妆圣品，且因其多种神奇的用...Elizabeth Arden伊丽莎白雅顿八小时润泽霜自1933年上市以来，以前所未有的修复、舒缓及滋润肌肤功效著称于世70年，它深得专业模特、演艺界专业化妆人员以及世界各地女士们的喜爱．并成为极为抢手的美容化妆圣品，且因其多种神奇的用途被誉为“世界第八大奇迹”。2007年2月，展开更多
基金supported by the National Natural Science Foundation of China(Grant No.31702017)
文摘Background:The Hainan Partridge(Arborophila ardens,Phasianidae,Galliformes) is an endemic species of Hainan Island,China,and it is classified as globally vulnerable species.There are at least 16 species in genus Arborophila and no genome sequence is available.Methods:The whole genome of Hainan Partridge was de novo sequenced(with shotgun approach on the Illumina 2000 platform) and assembled.Results:The genome size of Arborophila ardens is about 1.05 Gb with a high N50 scaffold length of 8.28 Mb and it is the first high quality genome announced in Arborophila genus.About 9.19% of the genome was identified as repeat sequences and about 5.88 million heterozygous SNPs were detected.A total of 17,376 protein-coding genes were predicted and their functions were annotated.The genome comparison between Hainan Partridge and Red Junglefowl(Gallus gallus) demonstrated a conserved genome structure.The phylogenetic analysis indicated that the Hainan Partridge possessed a basal phylogenetic position in Phasianidae and it was most likely derived from a common ancestor approximately 36.8 million years ago(Mya).We found that the Hainan Partridge population had experienced bottleneck and its effective population decreased from about 1,040,000 individuals 1.5 Mya to about 200,000 individuals 0.2 Mya,and then recovered to about 460,000 individuals.The number of 1:1 orthologous genes that were predicted to have undergone positive selection in the Hainan Partridge was 504 and some environmental adaptation related categories,such as response to ultraviolet radiation were represented in GO distribution analysis.Conclusions:We announced the first high quality genome in Arborophila genus and it will be a valuable genomic resource for the further studies such as evolution,adaption,conservation,not only on Hainan Partridge but also on Arborophila or Phasianidae species.
文摘Enoch Arden is a narrative poem by Alfred Tennyson,which turns out to be the record of the process of its hero's spiritual journey and can be interpreted from the perspectives of the description of natural landscape.
