Conserved Plastid Genomes of Pourthiaea Trees: Comparative Analyses and Phylogenetic Relationship DOI Open Access
Ting Ren, Chang Peng, Yuan Lu

et al.

Forests, Journal Year: 2024, Volume and Issue: 15(10), P. 1811 - 1811

Published: Oct. 16, 2024

The genus Pourthiaea Decne., a deciduous woody group with high ornamental value, belongs to the family Rosaceae. Here, we reported newly sequenced plastid genome sequences of beauverdiana (C. K. Schneid.) Hatus., parvifolia E. Pritz., villosa (Thunb.) and Photinia glomerata Rehder & H. Wilson. plastomes these three species shared typical quadripartite structures, ranging in size from 159,903 bp (P. parvifolia) 160,090 beauverdiana). contained pair inverted repeat regions (26,394–26,399 bp), separated by small single-copy region (19,304–19,322 bp) large (87,811–87,973 bp). A total 113 unique genes were predicted for plastomes, including four ribosomal RNA genes, 30 transfer 79 protein-coding genes. Analyses repeat/single-copy boundary, mVISTA, nucleotide diversity, genetic distance showed that 13 (including 10 published plastomes) are highly conserved. number simple sequence repeats long is similar among species. non-coding (trnT-GGU-psbD, trnR-UCU-atpA, trnH-GUG-psbA) most divergent. Only one gene, rbcL, was under positive selection. Phylogenetic analyses based on 78 29 nrDNA strongly supported monophyly Pourthiaea. As relationship other genera our phylogenies, sister Malus plastome while it remaining phylogenies. Furthermore, significant cytonuclear discordance likely stems hybridization events within Pourthiaea, reflecting complex evolutionary dynamics genus. Our study provides valuable insights further phylogenetic, taxonomic, delimitation studies as well essential support horticultural improvement conservation germplasm resources.

Language: Английский

Phytochemical and biological studies on rare and endangered plants endemic to China. Part XXXVI. Tsugaforrestiacids A–O: Structurally diverse C-18 carboxylated diterpenoids from the twigs and needles of the ‘vulnerable’ conifer and their inhibitory effects on ATP-citrate lyase DOI

Peng‐Jun Zhou,

Ze‐Yu Zhao,

Jin‐Xin Zhu

et al.

Phytochemistry, Journal Year: 2024, Volume and Issue: 226, P. 114221 - 114221

Published: July 11, 2024

Language: Английский

Citations

5
Intraspecific and Intrageneric Genomic Variation across Three Sedum Species (Crassulaceae): A Plastomic Perspective DOI Open Access
Sijia Zhang, Shiyun Han,

De Bi

et al.

Genes, Journal Year: 2024, Volume and Issue: 15(4), P. 444 - 444

Published: March 31, 2024

Sedum is the largest succulent genus in Crassulaceae. Because of predominant maternal inheritance, little recombination, and slow evolution, plastomes can serve as powerful super barcodes for inter- or intra-species phylogenetic analyses. While previous research has focused on between species, studies are scarce. Here, we sequenced from three species (Sedum alfredii, plumbizincicola, japonicum) to understand their evolutionary relationships plastome structural evolution. Our analyses revealed minimal size GC content variation across species. However, gene distribution at IR boundaries, repeat structures, codon usage patterns showed diversity both inter-specific intra-specific levels. Notably, an rps19 expansion a bias toward A/T-ending codons were observed. Codon aversion motifs also varied, potentially serving markers future studies. Phylogenetic confirmed non-monophyly divided Acre clade into two groups. Individuals same clustered together, with strong support S. tricarpum, plumbizincicola. Additionally, japonicum clearly affiliates clade. This study provides valuable insights intra-generic Sedum, well overall evolution within genus.

Language: Английский

Citations

4
Forest and Population Characteristics of Vulnerable Relict Tsuga forrestii Downie in China DOI Creative Commons

Peng-Bin Han,

Shugang Lu,

Cindy Q. Tang

et al.

Diversity, Journal Year: 2025, Volume and Issue: 17(3), P. 148 - 148

Published: Feb. 22, 2025

Tsuga forrestii Downie, a vulnerable species endemic to China, is confined small, fragmented habitats in the northwestern Yunnan and southwestern Sichuan Provinces, China. Understanding current status of its communities populations crucial for protecting existing natural forest resources. We surveyed 33 plots Sichuan, where T. primary dominant species. analyzed their community characteristics including vertical stratification, diversity, population structure, classified them into four distinct types: (1) evergreen coniferous forest; (2) forrestii-Lithocarpus variolosus broad-leaved mixed (3) forrestii-Quercus guyayifolia (4) forrestii-Abies forest. These forests exhibited multilayered as appeared arborous shrub layers, associated taxa were mainly Abies, Lithocarpus, Quercus, Castanopsis, Rhododendron. No significant differences richness or diversity indices phylogenetic relatedness metrics among types found. The maximum age remaining wild specimens was 344 years, with individuals under 20 years over 170 old being rare. average growth rate forrestii, based on ring width, fluctuated time, range mean values 0.92 3.31 mm/year. Established seedlings/saplings rare found unstable microhabitats. findings highlight poor regeneration decline populations. Improving maintaining status.

Language: Английский

Citations

0
Conserved Plastid Genomes of Pourthiaea Trees: Comparative Analyses and Phylogenetic Relationship DOI Open Access
Ting Ren, Chang Peng, Yuan Lu

et al.

Forests, Journal Year: 2024, Volume and Issue: 15(10), P. 1811 - 1811

Published: Oct. 16, 2024

The genus Pourthiaea Decne., a deciduous woody group with high ornamental value, belongs to the family Rosaceae. Here, we reported newly sequenced plastid genome sequences of beauverdiana (C. K. Schneid.) Hatus., parvifolia E. Pritz., villosa (Thunb.) and Photinia glomerata Rehder & H. Wilson. plastomes these three species shared typical quadripartite structures, ranging in size from 159,903 bp (P. parvifolia) 160,090 beauverdiana). contained pair inverted repeat regions (26,394–26,399 bp), separated by small single-copy region (19,304–19,322 bp) large (87,811–87,973 bp). A total 113 unique genes were predicted for plastomes, including four ribosomal RNA genes, 30 transfer 79 protein-coding genes. Analyses repeat/single-copy boundary, mVISTA, nucleotide diversity, genetic distance showed that 13 (including 10 published plastomes) are highly conserved. number simple sequence repeats long is similar among species. non-coding (trnT-GGU-psbD, trnR-UCU-atpA, trnH-GUG-psbA) most divergent. Only one gene, rbcL, was under positive selection. Phylogenetic analyses based on 78 29 nrDNA strongly supported monophyly Pourthiaea. As relationship other genera our phylogenies, sister Malus plastome while it remaining phylogenies. Furthermore, significant cytonuclear discordance likely stems hybridization events within Pourthiaea, reflecting complex evolutionary dynamics genus. Our study provides valuable insights further phylogenetic, taxonomic, delimitation studies as well essential support horticultural improvement conservation germplasm resources.

Language: Английский

Citations

0