Characterization and phylogenetic analysis of the complete chloroplast genome sequence of (Rchb. f. 1854).

(Rchb. f.), an ornamental orchid known for vibrant flowers, has a 148,090 bp chloroplast genome with 36.

The chloroplast genome of Chrozophora sabulosa Kar. & Kir. and its exploration in the evolutionary position uncertainty of genus Chrozophora.

Chrozophora sabulosa Kar. & Kir. is a biennial herbaceous plant that belongs to the Euphorbiaceae family and has medicinal properties.

Preparation of a novel DNA-imprinted sensor based on chitosan and its highly sensitive detection of Pb.

Lead ion is very harmful to the environment, so it is very important to study its detection methods. In this study, a novel electrochemical sensor was constructed by modifying deoxyribonucleic acid (DNA) on the electrode, which can be used for the detection of Pb in the environment. Part of the mixed solution of chitosan (CS) and Pb template ions was dropped onto the surface of a glassy carbon electrode.

Transcriptome and hormone metabolome reveal the mechanism of stem bending in water lily () cut-flowers.

Water lilies are popular ornamental cut-flowers with significant economic and cultural value. However, stem bending affects the preservation of cut-flowers during their vase life. To gain further insights into the molecular mechanisms of stem bending, transcriptome profiling, hormone measurement, and morphological analysis were performed using the stems of the 'Blue Bird' water lily.

A new lithophilous species of Gesneriaceae, , from the karst area of South Yunnan, China.

A new lithophytic species of Gesneriaceae, K.Tan, X.Q.

Comparison of Composition, Free-Radical-Scavenging Capacity, and Antibiosis of Fresh and Dry Leave Aqueous Extract from .

Numerous plants of medicinal value grow on Hainan Island (China). Given the lack of knowledge on the phytochemical and pharmacological properties of Chun and Y. F.

 (Orchidaceae, Epidendroideae), a new species from Hainan Island, China.

, a new species of Orchidaceae from Hainan Island, China, is described and illustrated. It is morphologically similar to , and with dwarf habits, scarcely opening flowers, elongated fruit stems, curved and fleshy perianth tubes and similar columns and lips, but can be easily distinguished from them by having a pair of lateral wings bent outwards at the apex of the column and lateral wings with acuminate tips lower than the anther. According to the IUCN Red List Categories and Criteria, the new species is assessed as Endangered (EN).

Transcriptome Analysis Revealing the Interaction of Abscisic Acid and Cell Wall Modifications during the Flower Opening and Closing Process of .

As a tropical flower, is a typical night-blooming waterlily used in water gardening. Its petals are rich in aromatic substances that can be used to extract essential oils and as flower tea. However, the short life of the flower seriously affects the development of its cut flowers.

DhMYB2 and DhbHLH1 regulates anthocyanin accumulation activation of late biosynthesis genes in -type .

-type is a popular orchid with good ornamental and market value. Despite their popularity, molecular regulation of anthocyanin biosynthesis during flower development remains poorly understood. In this study, we systematically investigated the regulatory roles of the transcription factors DhMYB2 and DhbHLH1 in anthocyanins biosynthesis.

Full-length transcriptome revealed the accumulation of polyunsaturated fatty acids in developing seeds of .

Background: is cultivated as a valuable oilseed crop, and its mature seeds are rich in polyunsaturated fatty acids (FAs), which are widely used in food and pharmaceutical industries. Recently, next-generation sequencing (NGS) transcriptome studies in indicated that some candidate genes were involved in oil biosynthesis. The NGS were inaccuracies in assembly of some candidate genes, leading to unknown errors in date analyses.

Morpho-histology, endogenous hormone dynamics, and transcriptome profiling in during female cone development.

de Laubenfels is a perennial dioeciously gymnosperm species dominant in tropical montane rain forests. Due to deforestation, natural disasters, long infancy, and poor natural regeneration ability, the population of this species has been significantly reduced and listed as an endangered protected plant. To better understand the female cone development in , we examined the morphological and anatomical changes, analyzed the endogenous hormone dynamics, and profiled gene expression.

Characterization of the Key Bibenzyl Synthase in .

, an endemic medicinal herb in Hainan Island, is rich in bibenzyls. However, the key rate-limited enzyme involved in bibenzyl biosynthesis has yet to be identified in . In this study, to explore whether there is a significant difference between the tissues, the total contents of bibenzyls were determined in roots, pseudobulbs, and leaves.

Transcriptome Analysis Reveals the Senescence Process Controlling the Flower Opening and Closure Rhythm in the Waterlilies ( L.).

Most waterlily flowers open at dawn and close after noon usually for three to four days, and thereafter wilt. The short lifespan of flowers restricts the development of the flower postharvest industry. The termination of flower movements is a key event during flower aging process.

Metabolite analysis in Nymphaea 'Blue Bird' petals reveal the roles of flavonoids in color formation, stress amelioration, and bee orientation.

In this study, metabolome of open petals (OP) and closed petals (CP) from Nymphaea 'Blue Bird' was firstly investigated. A total of 455 metabolites was identified in Nymphaea 'Blue Bird' petals, which was mainly composed of 100 flavonoids, 83 phenolic acids, 64 amino acids and derivatives, 60 lipids, 32 alkaloids, 32 organic acids, 24 nucleotides and derivatives, and 12 lignans and coumarins. By differential analysis, 192 metabolites were identified with variable importance in project ≥ 1, among which 83 and 109 metabolites were up- and down-regulated in OP group, respectively.

Genome-Wide Identification and Expression Analysis of MYB Transcription Factor Superfamily in .

is an important traditional Chinese medicine and naturally grows on tree trunks and cliffs, where it can encounter diverse environmental stimuli. MYB transcription factors are widely involved in response to abiotic stresses. However, the gene family has not yet been systematically cataloged in .

Transcriptomics and Metabolomics Reveal Purine and Phenylpropanoid Metabolism Response to Drought Stress in , an Endemic Orchid Species in Hainan Island.

Drought stress is a bottleneck factor for plant growth and development, especially in epiphytic orchids that absorb moisture mainly from the air. Recent studies have suggested that there are complex transcriptional regulatory networks related to drought stress in In this study, the transcription and metabolite alterations involved in drought stress response in were investigated through RNA-seq and metabolomics. A total of 856 metabolites were identified from stressed and control samples, with 391 metabolites showing significant differences.

First Report of and Causing Canker Disease of Sacha Inchi in Hainan, China.

Sacha inchi ( L.) belongs to the family Euphorbiaceae. It is a perennial wooden oilseed crop, and also exhibits a good source of polyunsaturated fatty acids, protein and other bioactive compounds, such as tocopherols, carotenes and phytosterols (Chirinos et al.

Complete plastome sequence of Linnaeus, a dyestuff and medicinal species.

Linnaeus is a great tree of Fabaceae. It is mainly distributed in the Southern provinces of China and Southeast Asian countries. It can be used to extract dyes.

Complete plastome sequence of Hook. f. a dyestuff species.

Hook. f. is a great tree of Apocynaceae.

Genetic delimitation of species from Hainan Island.

Hainan Island harbours an extraordinary diversity of Gesneriaceae with 14 genera and 23 species, amongst which two species and one variety are recognised in the genus . These three taxa are all Hainan-endemics and show a complex geographical distribution pattern with considerable morphological intermixtures. In this study, we combined DNA (nuclear ITS sequences and cpDNAL-F and 1b) to evaluate genetic delimitation for 12 populations from the island, together with morphological similarity analysis using 16 morphological traits.

-Methyladenine DNA Modification in the Woodland Strawberry () Genome Reveals a Positive Relationship With Gene Transcription.

-methyladenine (6mA) DNA modification has been detected in several eukaryotic organisms, where it plays important roles in gene regulation and epigenetic memory maintenance. However, the genome-wide distribution patterns and potential functions of 6mA DNA modification in woodland strawberry () remain largely unknown. Here, we examined the 6mA landscape in the genome by adopting single-molecule real-time sequencing technology and found that 6mA modification sites were broadly distributed across the woodland strawberry genome.

Pollen-mediated gene flow ensures connectivity among spatially discrete sub-populations of Phalaenopsis pulcherrima, a tropical food-deceptive orchid.

Background: Gene flow in plants via pollen and seeds is asymmetrical at different geographic scales. Orchid seeds are adapted to long-distance wind dispersal but pollinium transfer is often influenced by pollinator behavior. We combined field studies with an analysis of genetic diversity among 155 physically mapped adults and 1105 F1 seedlings to evaluate the relative contribution of pollen and seed dispersal to overall gene flow among three sub-populations of the food-deceptive orchid Phalaenopsis pulcherrima on Hainan Island, China.

mRNA and miRNA Expression Analysis Reveal the Regulation for Flower Spot Patterning in 'Panda'.

cultivar 'Panda' is a beautiful and valuable ornamental for its big flower and unique big spots on the petals and sepals. Although anthocyanins are known as the main pigments responsible for flower colors in , and the anthocyanins biosynthetic pathway in is generally well known, the detailed knowledge of anthocynins regulation within the spot and non-spot parts in 'Panda' flower is limited. In this study, transcriptome and small RNA libraries analysis from spot and non-spot sepal tissues of 'Panda' were performed, and we found , , and miR156g, miR858 is associated with the purple spot patterning in its sepals.

Chemical constituents from .

A new phenolic derivative () and a new dihydrophenanthrene () were isolated from the aerial part of rofe, along with 12 known compounds. The structures of the new compounds were elucidated by spectroscopic analysis，and the relative configuration of compound was determined by -based configuration analysis (JBCA) method. Bioassay result indicated that compound exhibited weak antibacterial activity against and .