Dataset Information

Characterization of the complete chloroplast genome of mangrove Rhizophora apiculata Blume (Rhizophoraceae).

ABSTRACT: The chloroplast (cp) genome sequence of Rhizophora apiculata was characterized. The cp genome length was 164,343 bp in length, containing a typical structure of a large single copy (LSC) of 93,155 bp, a small single copy (SSC) of 19,376 bp, and two inverted repeats (IRs) of 25,906 bp, with a GC content of 34.9%. There were 131 genes were annotated in the cp genome, including 85 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. A phylogenetic analysis using cp genomes of mangroves and ecologically associated species resolved R. apiculata in Rhizophora with R. stylosa and R. x lamarckii. This complete chloroplast sequence offers a promising tool for further species identification and evolutionary studies of Rhizophora, as well as for mangroves.

SUBMITTER: Li YC

PROVIDER: S-EPMC8231346 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Characterization of the complete chloroplast genome of mangrove <i>Rhizophora apiculata</i> Blume (Rhizophoraceae).

Li Yi-Chan YC Li Su-Yuan SY Zhang Tian-Hao TH Qin Lan-Li LL An Yi-Dong YD Pang Yu-Kun YK Jiang Guo-Feng GF

Mitochondrial DNA. Part B, Resources 20210623 7

The chloroplast (cp) genome sequence of <i>Rhizophora apiculata</i> was characterized. The cp genome length was 164,343 bp in length, containing a typical structure of a large single copy (LSC) of 93,155 bp, a small single copy (SSC) of 19,376 bp, and two inverted repeats (IRs) of 25,906 bp, with a GC content of 34.9%. There were 131 genes were annotated in the cp genome, including 85 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. A phylogenetic analysis using cp genomes of mangroves and ...[more]

PMID: 34222659

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Project description:Low temperatures largely determine the geographic limits of plant species by reducing survival and growth. Inter-specific differences in the geographic distribution of mangrove species have been associated with cold tolerance, with exclusively tropical species being highly cold-sensitive and subtropical species being relatively cold-tolerant. To identify species-specific adaptations to low temperatures, we compared the chilling stress response of two widespread Indo-West Pacific mangrove species from Rhizophoraceae with differing latitudinal range limits-Bruguiera gymnorhiza (L.) Lam. ex Savigny (subtropical range limit) and Rhizophora apiculata Blume (tropical range limit). For both species, we measured the maximum photochemical efficiency of photosystem II (Fv/Fm) as a proxy for the physiological condition of the plants and examined gene expression profiles during chilling at 15 and 5 °C. At 15 °C, B. gymnorhiza maintained a significantly higher Fv/Fm than R. apiculata. However, at 5 °C, both species displayed equivalent Fv/Fm values. Thus, species-specific differences in chilling tolerance were only found at 15 °C, and both species were sensitive to chilling at 5 °C. At 15 °C, B. gymnorhiza downregulated genes related to the light reactions of photosynthesis and upregulated a gene involved in cyclic electron flow regulation, whereas R. apiculata downregulated more RuBisCo-related genes. At 5 °C, both species repressed genes related to CO2 assimilation. The downregulation of genes related to light absorption and upregulation of genes related to cyclic electron flow regulation are photoprotective mechanisms that likely contributed to the greater photosystem II photochemical efficiency of B. gymnorhiza at 15 °C. The results of this study provide evidence that the distributional range limits and potentially the expansion rates of plant species are associated with differences in the regulation of photosynthesis and photoprotective mechanisms under low temperatures.

Dataset Information

Characterization of the complete chloroplast genome of mangrove Rhizophora apiculata Blume (Rhizophoraceae).

Publications

Characterization of the complete chloroplast genome of mangrove <i>Rhizophora apiculata</i> Blume (Rhizophoraceae).

Similar Datasets

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