菌物学报2025，Vol.44Issue(4)：14-28,15.DOI:10.13346/j.mycosystema.240296
早期描述物种的模式标定及基因组解析:以中国第一个被描述的真菌新种五棱散尾鬼笔为例
Typification and genome analyses of early described fungal species:a case study of Lysurus mokusin,the first new fungal species described in China
摘要
Abstract
Lysurus mokusin(L.f.)Fr.,initially described and named'mo-ku-sin'after pronunciation of Chinese'蘑菰蕈'by the French missionary Cibot in 1774,is the first scientifically described fungus from China.To facilitate the correct application of its name,its typification and taxonomic study according to the current nomenclature code were carried out.The lectotype and epitype were designated,and mitochondrial genome and nuclear genome of the epitype specimen were assembled.The circulated mitochondria of L.mokusin totaled 101.1 kb,containing 26 tRNA and 16 protein-coding genes.Each nuclear haplotype contains 11 chromosomes with a total length of 33 Mb and 8/11 fragment contigs of 1.4 Mb.The BUSCO analysis suggested that the genome is 88.5％completed.This is the first genome reported for Lysurus.A high proportion of repeat sequences(ca.16％)was detected and,after masking,8 637 and 8 572 protein-coding genes were predicted for two haplotypes,respectively.The gene distribution shows a typical pattern of a"two-speed genome".In addition,27 non-redundant biosynthetic gene clusters(BGCs)were predicted,mainly distributed in Chr01,Chr04 and Chr06.Two BGCs are 100％homologous to known insecticidal and antimicrobial BGCs producing xenotetrapeptide and rhizomide.Our study provides a model for the typification of numerous early-described species lacking types in China.关键词
附加模式/DNA条形码/HiFi测序/双速基因组/生物合成基因簇Key words
epitype/DNA barcoding/HiFi sequencing/two-speed genome/biosynthetic gene cluster引用本文复制引用
梁俊敏,王科,杜卓,赵明君,蔡磊,戴玉成..早期描述物种的模式标定及基因组解析:以中国第一个被描述的真菌新种五棱散尾鬼笔为例[J].菌物学报,2025,44(4):14-28,15.基金项目
中华人民共和国科学技术部基础资源调查专项(2021FY100900)This work was supported by the National Science and Technology Fundamental Resources Investigation Program of China(2021FY100900). （2021FY100900）
