Assembly and comparative analysis of the complete mitochondrial genome of white towel gourd (Luffa cylindrica)

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC ACS Applied Electronic Materials Pub Date : 2024-05-01 DOI:10.1016/j.ygeno.2024.110859

Yihui Gong , Xuan Luo , Ting Zhang , Guihua Zhou , Jingyi Li , Bin Zhang , Peng Li , Hua Huang

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Abstract

Mitochondria play an important role in the energy production of plant cells through independent genetic systems. This study has aimed to assemble and annotate the functions of the mitochondrial (mt) genome of Luffa cylindrica. The mt genome of L. cylindrica contained two chromosomes with lengths of 380,879 bp and 67,982 bp, respectively. Seventy-seven genes including 39 protein-coding genes, 34 tRNA genes, 3 rRNA genes, and 1 pseudogene, were identified. About 90.63% of the codons ended with A or U bases, and 98.63% of monomers contained A/T, which contributed to the high A/T content (55.91%) of the complete mt genome. Six genes (ATP8, CCMFC, NAD4, RPL10, RPL5 and RPS4) showed positive selection. Phylogenetic analysis indicates that L. cylindrica is closely related to L. acutangula. The present results provide the mt genome of L. cylindrica, which may facilitate possible genetic variation, evolutionary, and molecular breeding studies of L. cylindrica.

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白毛巾葫芦（Luffa cylindrica）完整线粒体基因组的组装和比较分析。

线粒体通过独立的遗传系统在植物细胞的能量生产中发挥着重要作用。本研究旨在组装和注释圆筒丝瓜线粒体（mt）基因组的功能。圆柱丝瓜的线粒体基因组包含两条染色体，长度分别为 380,879 bp 和 67,982 bp。共鉴定出 77 个基因，包括 39 个蛋白质编码基因、34 个 tRNA 基因、3 个 rRNA 基因和 1 个假基因。约90.63%的密码子以A或U碱基结尾，98.63%的单体含有A/T，这导致完整的mt基因组中A/T含量较高（55.91%）。6个基因（ATP8、CCMFC、NAD4、RPL10、RPL5和RPS4）出现了正选择。系统进化分析表明，圆筒孢霉（L. cylindrica）与尖孢霉（L. acutangula）亲缘关系密切。本研究结果提供了圆筒黑麦草（L. cylindrica）的 mt 基因组，可能有助于圆筒黑麦草（L. cylindrica）的遗传变异、进化和分子育种研究。

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