Complete chloroplast genome of <i>Hevea benthamiana</i>, a SALB-resistant relative wild species of rubber tree

Niu, Ying-Feng; Hu, Yanshi; Liu, Ziyan; Zheng, Cheng; Liu, Jin

doi:10.1080/23802359.2020.1763868

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…In previous studies, we sequenced the complete nuclear genome of rubber tree ( Liu et al., 2020 ). The chloroplast genomes of four species of the genus Hevea were also sequenced ( Tangphatsornruang et al., 2011 ; Feng et al., 2020 ; Niu et al., 2020a , b ; Hu et al., 2022 ). But only one mitochondrial genome of Hevea species has been released, which needs further exploration ( Shearman et al., 2014 ).…”

Section: Introductionmentioning

confidence: 99%

Mitochondrial genome variation and intergenomic sequence transfers in Hevea species

Niu,

Gao,

Liu

2024

Front. Plant Sci.

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Among the Hevea species, rubber tree (Hevea brasiliensis) is the most important source of natural rubber. In previous studies, we sequenced the complete nuclear and chloroplast genomes of Hevea species, providing an invaluable resource for studying their phylogeny, disease resistance, and breeding. However, given that plant mitochondrial genomes are more complex and more difficult to assemble than that of the other organelles, little is known about their mitochondrial genome, which limits the comprehensive understanding of Hevea genomic evolution. In this study, we sequenced and assembled the mitochondrial genomes of four Hevea species. The four mitochondrial genomes had consistent GC contents, codon usages and AT skews. However, there were significant differences in the genome lengths and sequence repeats. Specifically, the circular mitochondrial genomes of the four Hevea species ranged from 935,732 to 1,402,206 bp, with 34–35 unique protein-coding genes, 35–38 tRNA genes, and 6–13 rRNA genes. In addition, there were 17,294–46,552 bp intergenomic transfer fragments between the chloroplast and mitochondrial genomes, consisting of eight intact genes (psaA, rrn16S, tRNA-Val, rrn5S, rrn4.5S, tRNA-Arg, tRNA-Asp, and tRNA-Asn), intergenic spacer regions and partial gene sequences. The evolutionary position of Hevea species, crucial for understanding its adaptive strategies and relation to other species, was verified by phylogenetic analysis based on the protein-coding genes in the mitochondrial genomes of 21 Malpighiales species. The findings from this study not only provide valuable insights into the structure and evolution of the Hevea mitochondrial genome but also lay the foundation for further molecular, evolutionary studies, and genomic breeding studies on rubber tree and other Hevea species, thereby potentially informing conservation and utilization strategies.

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Section: Introductionmentioning

confidence: 99%

Mitochondrial genome variation and intergenomic sequence transfers in Hevea species

Niu,

Gao,

Liu

2024

Front. Plant Sci.

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Genic Conservation and Genetic Improvement of Hevea brasiliensis

Sathik

Gireesh

2021

Cash Crops

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Characterization of the complete chloroplast genome of Hevea pauciflora (Euphorbiaceae), an important wild relative of the rubber tree

Hong

Liu

2022

Mitochondrial DNA Part B

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Hevea pauciflora belongs to the Euphorbiaceae family, an important wild relative of the rubber tree. This study sequenced, assembled, and annotated the complete chloroplast genome of H. pauciflora . The complete chloroplast genome is 161,123 bp with a canonical quadripartite structure containing a large single-copy (LSC) region (89,109 bp), a small single-copy (SSC) region (18,376 bp), and two inverted repeat regions (IRa and IRb) (26,819 bp, each). A total of 134 genes were annotated, including 86 protein-coding genes, four pseudogenes, 36 tRNA genes, and eight rRNA genes. The 134 genes include four major groups: ‘self-replication’, ‘photosynthesis’, ‘unknown function’, and ‘others’. A phylogenetic analysis clustered H. pauciflora , H. brasiliensis , H. camargoana , and H. benthamiana into one clade, consistent with traditional taxonomy. This study provides useful data for further studies of Hevea genus and the phylogenetic relationships of Euphorbiaceae species.

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Complete chloroplast genome of Hevea benthamiana, a SALB-resistant relative wild species of rubber tree

Cited by 3 publications

References 14 publications

Mitochondrial genome variation and intergenomic sequence transfers in Hevea species

Mitochondrial genome variation and intergenomic sequence transfers in Hevea species

Genic Conservation and Genetic Improvement of Hevea brasiliensis

Characterization of the complete chloroplast genome of Hevea pauciflora (Euphorbiaceae), an important wild relative of the rubber tree

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