Loropetalum subcordatum
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ABSTRACT:
PROVIDER: PRJNA479364 | ENA |
REPOSITORIES: ENA
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Project description:Loropetalum subcordatum Genome sequencing and assembly
| PRJNA417724 | ENA
Project description:Loropetalum chinense var. rubrum genome
| PRJNA1058446 | ENA
Project description:Flower transcriptome of Loropetalum chinense var. rubrum
| PRJNA1058453 | ENA
Project description:Loropetalum chinense var. rubrum Yieh (L. chinense) is an evergreen shrub or small tree of Hamamelidaceae. In this study, the chloroplast genome sequence of L. chinense is 159,451 bp in length, consisting of a large single-copy region with 88,166 bp (LSC), a small single-copy region with 18,773 bp (SSC), and two inverted repeat regions with 26,256 bp (IRs). The GC content in the chloroplast genome of L. chinense is 38.0%. The chloroplast genome of L. chinense contained 125 genes, including 84 protein-coding genes, 37 tRNA genes, and 4 rRNA genes. The phylogenetic tree showed that L. chinense was closely related to L. subcordatum.
| S-EPMC8667894 | biostudies-literature
Project description:BACKGROUND:Loropetalum subcordatum is an endangered species endemic to China that is characterized by narrow distribution, small population size, and delayed fertilization. However, the genetic diversity of the entire extant natural and ex situ populations has not been assessed to date. In this study, we evaluated the genetic diversity and structure of six natural populations and a single ex situ population (the only known ex situ population of L. subcordatum) using sequence-related amplified polymorphism data. RESULTS:In total, 553 reliable DNA bands, of which 359 (63.28%) were polymorphic, were amplified by polymerase chain reaction with combinations of 15 primers. Low average gene diversity within populations and high genetic differentiation were detected in L. subcordatum. A Mantel test demonstrated that there was a positive correlation between genetic and geographic distances, indicating that significant genetic divergence was likely the result of geographic isolation among natural populations. Furthermore, based on genetic structure patterns, populations of L. subcordatum were divided into three clusters. Group 1 was composed of specimens from Libo, Guizhou Province (GZ) and Huanjiang, Guangxi Zhuang Autonomous Region (GX). Group 2 was composed of Mt. Wuguishan, Guangdong Province (GD). Group 3 was composed of three populations in Hong Kong Special Administrative Region. Additionally, clonal reproduction probably existed in GD population. According to the genetic information analysis and field survey, the ex situ population did not match its source population (GD) in terms of genetics, and its habitat was different from the original natural habitat. We observed that a few individual GD seeds were needed to improve ZS ex situ in the future. CONCLUSIONS:Compared to previous SRAP-based studies of endangered plants, L. subcordatum had extremely low average gene diversity within populations and high genetic differentiation among populations. At present, the unique ex situ population has not been successful due to non-representative samples being taken, a smaller population size, and man-made changes in habitat. Potential strategies are suggested to improve the conservation of this species.
| S-EPMC5812050 | biostudies-literature
Project description:“Pruning” is a simple and efficient way to control the flowering period, but it is rarely used in perennial woody ornamental plants. In this paper, Loropetalum chinense var. rubrum was pruned in different degrees, and the relationship between pruning intensity and flowering number, and flowering time and chlorophyll fluorescence parameters were compared. After statistics, it was found that pruning could advance blossoms of L. chinense var. rubrum; also, light and heavy cutting could both obtain a larger number of flowers. In addition, through correlation analysis, it was found that during the flowering period, the Rfd parameter of the unpruned treatment had a very significant positive correlation with the number of flowers FN, which was 0.81. In other pruning treatment groups, Rfd and FN also presented a certain positive correlation, indicating that the Rfd parameter can be used to predict the number of flowers during the flowering process of L. chinense var. rubrum. The research results provided a new idea for the regulation of the flowering period of L. chinense var. rubrum and other woody ornamental plants and laid the foundation for the diversified application of L. chinense var. rubrum.
| S-EPMC9104088 | biostudies-literature