Comprehensive assembly and comparative examination of the full mitochondrial genome in Castanea mollissima Blume

Guo, Haili; Liu, Qiong; Chen, Ying; Niu, Hongyun; Zhao, Qianru; Song, Hui; Pang, Ruidong; Huang, Xiaolu; Zhang, Jingzheng; Zhao, Zhiheng; Liu, Dan; Zhu, Jingle

doi:10.1016/j.ygeno.2023.110740

Genomics

2023

DOI: 10.1016/j.ygeno.2023.110740

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Comprehensive assembly and comparative examination of the full mitochondrial genome in Castanea mollissima Blume

Haili Guo,

Qiong Liu,

Ying Chen

et al.

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2024

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The complete mitochondrial genome of Castanopsis carlesii and Castanea henryi reveals the rearrangement and size differences of mitochondrial DNA molecules

Tu,

Xin,

et al. 2024

BMC Plant Biol

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Background Castanopsis carlesii is a dominant tree species in subtropical evergreen broad-leaved forests and holds significant ecological value. It serves as an excellent timber tree species and raw material for cultivating edible fungi. Henry Chinquapin (Castanea henryi) wood is known for its hardness and resistance to water and moisture, making it an exceptional timber species. Additionally, its fruit has a sweet and fruity taste, making it a valuable food source. However, the mitogenomes of these species have not been previously reported. To gain a better understanding of them, this study successfully assembled high-quality mitogenomes of C. carlesii and Ca. henryi for the first time. Results Our research reveals that the mitochondrial DNA (mtDNA) of C. carlesii exhibits a unique multi-branched conformation, while Ca. henryi primarily exists in the form of two independent molecules that can be further divided into three independent molecules through one pair of long repetitive sequences. The size of the mitogenomes of C. carlesii and Ca. henryi are 592,702 bp and 379,929 bp respectively, which are currently the largest and smallest Fagaceae mitogenomes recorded thus far. The primary factor influencing mitogenome size is dispersed repeats. Comparison with published mitogenomes from closely related species highlights differences in size, gene loss patterns, codon usage preferences, repetitive sequences, as well as mitochondrial plastid DNA segments (MTPTs). Conclusions Our study enhances the understanding of mitogenome structure and evolution in Fagaceae, laying a crucial foundation for future research on cell respiration, disease resistance, and other traits in this family.

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The complete mitochondrial genome of Castanopsis carlesii and Castanea henryi reveals the rearrangement and size differences of mitochondrial DNA molecules

Tu,

Xin,

et al. 2024

BMC Plant Biol

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show abstract

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Comprehensive assembly and comparative examination of the full mitochondrial genome in Castanea mollissima Blume

Cited by 1 publication

References 54 publications

The complete mitochondrial genome of Castanopsis carlesii and Castanea henryi reveals the rearrangement and size differences of mitochondrial DNA molecules

The complete mitochondrial genome of Castanopsis carlesii and Castanea henryi reveals the rearrangement and size differences of mitochondrial DNA molecules

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