Construction of Pseudomolecules for the Chinese Chestnut (Castanea mollissima) Genome

被引：38

作者：

Wang, Jinping ^{[1
]}

Tian, Shoule ^{[1
]}

Sun, Xiaoli ^{[1
]}

Cheng, Xinchao ^{[2
]}

Duan, Naibin ^{[3
]}

Tao, Jihan ^{[1
]}

Shen, Guangning ^{[1
]}

机构：

[1] Shandong Inst Pomol, 66 Longtan Rd, Tai An 271000, Shandong, Peoples R China

[2] Biomarker Technol Corp, Floor 8,Shunjie Bldg,12 Fudian Rd, Beijing 101300, Peoples R China

[3] Shandong Acad Agr Sci, Shandong Ctr Crop Germplasm Resources, Jinan 250100, Shandong, Peoples R China

来源：

G3-GENES GENOMES GENETICS | 2020年 / 10卷 / 10期

关键词：

Chinese chestnut; Castanea mollissimaBlume; genome assembly; single molecular sequencing; high-throughput chromosome conformation capture; QUALITY; IDENTIFICATION; ASSEMBLIES; EVOLUTION; BURR;

D O I：

10.1534/g3.120.401532

中图分类号：

Q3 [遗传学];

学科分类号：

071007 ; 090102 ;

摘要：

The Chinese chestnut (Castanea mollissimaBl.) is a woody nut crop with a high ecological value. Although many cultivars have been selected from natural seedlings, elite lines with comprehensive agronomic traits and characters remain rare. To explore genetic resources with aid of whole genome sequence will play important roles in modern breeding programs for chestnut. In this study, we generated a high-qualityC. mollissimagenome assembly by combining 90x Pacific Biosciences long read and 170x high-throughput chromosome conformation capture data. The assembly was 688.93 Mb in total, with a contig N50 of 2.83 Mb. Most of the assembled sequences (99.75%) were anchored onto 12 chromosomes, and 97.07% of the assemblies were accurately anchored and oriented. A total of 33,638 protein-coding genes were predicted in theC. mollissimagenome. Comparative genomic and transcriptomic analyses provided insights into the genes expressed in specific tissues, as well as those associated with burr development in the Chinese chestnut. This highly contiguous assembly of theC. mollissimagenome provides a valuable resource for studies aiming at identifying and characterizing agronomical-important traits, and will aid the design of breeding strategies to develop more focused, faster, and predictable improvement programs.

引用

页码：3565 / 3574

页数：10

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