经济树种全基因组测序成果要报

摘要

There exist some dififcultiesinassemblyandannotation ofgenome sequencing of economic trees owning toits enormousgenome. In order to enhanceresearch efifciency onwholegenomein economic trees,itis necessary toanalyzeand compare theresearch progressat theaspectand the existing problems. Theachievements ofwhole genome sequencing of the 28 economic tree specieswere summarized. The sequencing strategies, technology,methods, and the sequencingmaterialswere compared. Thewholegenome size,gene numbers,gene density,averagelength of genes,averagelength ofintrons, GC contentand other structure characteristicswereanalyzed.Moreover, theimportant molecular eventsin the evolution process of the specieswere collected,and theimportant biological economic traitswere dissected,including cellulose,lignin, sugarand starch,grease,resistance,and so on. Inaddition, theimportantrole of Chinain theifeld ofgenome scienceswasforecasted.%经济树种通常基因组较大,测序的组装、注释等存在较大困难,有必要对这方面的研究进展及存在的问题进行分析比较,以提高经济林木全基因组的研究效率.对已经完成全基因组测序的28种经济树种的全基因组测序成果进行了概述,比较了所采用的测序策略、技术与方法及所利用的测序材料,分析了各物种全基因组的大小、基因数量、基因密度、基因均长、平均内含子长度、GC含量等结构特点,汇集了各树种系统发育中的基因组复制等重要分子事件,探讨了其纤维素、木质素、糖与淀粉、油脂、抗性、生殖等重要生物经济性状的基因组学特征,展望了中国在基因组科学领域中的重要影响.