Analysis of Spatial-Temporal Variation in Floral Volatiles Emitted from by Headspace Solid-Phase Microextraction and GC-MS.

is a rare aromatic species native to southeastern China, but its floral scent properties and release dynamics remain unclear. This study is the first systematic analysis of spatial-temporal variation in volatile organic compounds (VOCs) emitted from by headspace solid-phase microextraction (HS-SPME) with gas chromatography-mass spectrometry (GC-MS). Thirty-two VOCs were identified, 20 of which were detected for the first time.

Integration of chromatin accessibility and gene expression reveals new regulators of cold hardening to enhance freezing tolerance in Prunus mume.

Low temperature is one of the most important abiotic factors limiting the growth, development and geographical distribution of plants. Prunus mume is an attractive woody ornamental plant that blooms in early spring in Beijing. However, the molecular mechanisms underlying cold hardening to enhance freezing tolerance in Prunus genus remains elusive.

Multiomics analysis reveals the mechanisms underlying the different floral colors and fragrances of Rosa hybrida cultivars.

The color and fragrance of rose flowers affect their commercial value. However, several rose varieties with new floral colors developed by the bud mutation method lost their fragrance during the breeding process, raising the question: Is there a relationship between floral color and aroma traits? Rose cultivar 'Yellow Island' (YI) with intensely aroma and yellow petals, while its bud mutant 'Past Feeling' (PF) with light aroma and pink petals mixing some yellow, two cultivars were used to explore this question using multiomics approaches. We investigated the genomic polymorphisms between PF and YI by whole-genome resequencing.

The Establishment of a Genetic Transformation System and the Acquisition of Transgenic Plants of Oriental Hybrid Lily ( L.).

Lily ( spp.) has elegant flowers and beautiful colors, which makes it popular among people. However, the poor stress resistance and self-propagation ability of lily limit its application in landscaping to a great extent.

Functional characterization of two flowering repressors SHORT VEGETATIVE PHASE and TERMINAL FLOWER 1 in reblooming bearded Iris (Iris spp.).

Reblooming bearded iris (Iris spp.) could bloom in both spring and autumn, which has extended the ornamental periods. Our previous transcriptome analysis has indicated the possible regulatory role of SHORT VEGETATIVE PHASE (SVP) in reblooming of bearded iris.

Transcriptomic analysis reveals the formation mechanism of anemone-type flower in chrysanthemum.

Background: The ray and disc florets on the chrysanthemum capitulum are morphologically diverse and have remarkably abundant variant types, resulting in a rich variety of flower types. An anemone shape with pigmented and elongated disk florets is an important trait in flower shape breeding of chrysanthemums. The regulatory mechanism of their anemone-type disc floret formation was not clear, thus limiting the directional breeding of chrysanthemum flower types.

, a Sugar Transporter in Lily, Is Regulated by Transcription Factor to Participate in the ABA Signaling Pathway and Enhance Tolerance to Multiple Abiotic Stresses in Tobacco.

Sugar transport and distribution plays an important role in lily bulb development and resistance to abiotic stresses. In this study, a member of the Sugar Will Eventually be Exported Transporters () gene family, , from Oriental hybrid lily 'Sorbonne' was identified. LoSWEET14 encodes a protein of 278 amino acids and is capable of transporting sucrose and some types of hexoses.

Identification and Characterization of Transcription Factors Involved in Geraniol Biosynthesis in .

Fragrance is an important characteristic of rose flowers and is largely determined by the terpenes. Rose has a unique NUDX1 (NUDIX HYDROLASES 1)-dependent monoterpene geraniol biosynthesis pathway, but little is known about its transcriptional regulation. In this study, we characterized two China rose () materials from the 'Old Blush' variety with contrasting aromas.

Effects of low temperature on flowering and the expression of related genes in var. .

Introduction: var. blooms 2-3 times a year, among which the autumn flowering period has great potential for exploitation, but the number of flowers in the autumn flowering period is much smaller than that in the spring flowering period.

Methods: Using 'Hei Zhenzhu' and 'Xiangnong Xiangyun' as experimental materials, the winter growth environment of var.

Diacylglycerol Acyltransferase 3(DGAT3) Is Responsible for the Biosynthesis of Unsaturated Fatty Acids in Vegetative Organs of .

'Diacylglycerol acyltransferase (DGAT)' acts as a key rate-limiting enzyme that catalyzes the final step of the biosynthesis of triacylglycerol (TAG). The study was to characterize the function of the gene in , which is known for its accumulation of high levels of unsaturated fatty acids (UFAs). We identified a gene which encodes a soluble protein that is located within the chloroplasts of .

Exploring the Molecular Mechanism of Sepal Formation in the Decorative Flowers of 'Endless Summer' Based on the ABCDE Model.

With its large inflorescences and colorful flowers, has been one of the most popular ornamental plants in recent years. However, the formation mechanism of its major ornamental part, the decorative floret sepals, is still not clear. In this study, we compared the transcriptome data of 'Endless Summer' from the nutritional stage (BS1) to the blooming stage (BS5) and annotated them into the Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Ontology (GO) databases.

The -Targeted () Transcription Factor Regulates the Flowering Time by Binding to the Promoter of () in .

, a famous perennial ornamental plant and fruit tree in Asia, blooms in winter or early spring in the Yangtze River area. The flowering time directly determines its ornamental and economic value, so it is of great significance to study the molecular mechanism of flowering time. (), often regulated by , is an important flowering regulator, although its function is unknown in .

Genome-wide identification of three-amino-acid-loop-extension gene family and their expression profile under hormone and abiotic stress treatments during stem development of .

Transcription factors encoded by the three-amino-acid-loop-extension (TALE) gene family play a key role in regulating plant growth and development, and are involved in plant hormone regulatory pathways and responses to various environmental stresses. Researchers are currently studying genes in different species, but genes have not yet been studied. Therefore, based on the genome, we found a total of 23 gene family members, which were distributed on eight chromosomes.

Comparative transcriptome analysis identified and in regulating yellow-leaf coloration in .

Leaf color is one of the most important features for plants used for landscape and ornamental purposes. However, the regulatory mechanism of yellow leaf coloration still remains elusive in many plant species. To understand the complex genetic mechanism of yellow-leaf , we first compared the pigment content and leaf anatomical structure of yellow-leaf and green-leaf accessions derived from a hybrid population.

Genome-Wide Identification, Evolution, and Expression Analysis of GASA Gene Family in .

The Gibberellic Acid Stimulated Arabidopsis/Gibberellin Stimulated Transcript (GASA/GAST) gene family is a group of plant-specific genes encoding cysteine-rich peptides essential to plant growth, development, and stress responses. Although GASA family genes have been identified in various plant species, their functional roles in are still unknown. In this study, a total of 16 genes were identified via a genome-wide scan in and were grouped into three major gene clades based on the phylogenetic tree.

Genome-Wide Analysis of the Gene Family and Expression Analysis during Flowering Induction in × 'Somei-yoshino'.

SQUAMOSA Promoter-Binding Protein-Like () genes encode plant-specific transcription factors which bind to the SQUAMOSA promoter of the MADS-box genes to regulate its expression. It plays important regulatory roles in floral induction and development, fertility, light signals and hormonal transduction, and stress response in plants. In this study, 32 genes with complete (squamosa promoter binding protein) conserved domain were identified from the genome of 'Somei-yoshino' and analyzed by bioinformatics.

Cytological, physiological and transcriptomic analysis of variegated Leaves in Primulina pungentisepala offspring.

Background: Primulina pungentisepala is suitable for use as a potted plant because of its beautiful leaf variegation, which is significantly different in its selfed offspring. However, the mechanism of P. pungentisepala leaf variegation is unclear.

Effects of Polyploidization on Morphology, Photosynthetic Parameters and Sucrose Metabolism in Lily.

Polyploidization is widely used in ornamental plant breeding. The polyploids usually produce greater amounts of biomass. However, the alternations to sucrose metabolism that occur in lily during development after polyploidization induced using colchicine are poorly understood.

Expression Patterns of Key Genes in the Photoperiod and Vernalization Flowering Pathways in with Different Bulb Sizes.

is a wild , and its flowering transition requires a long period of cold exposure to meet the demand of vernalization. The responses of different sized bulbs to cold exposure and photoperiod are different, and the floral transition pathways of small and large bulbs are different. In this study, small and large bulbs were placed in cold storage for different weeks and then cultured at a constant ambient temperature of 25 °C under long day (LD) and short day (SD) conditions.

Integrated transcriptome and small RNA sequencing in revealing miRNA-mediated regulatory network of floral bud break in .

MicroRNAs is one class of small non-coding RNAs that play important roles in plant growth and development. Though miRNAs and their target genes have been widely studied in many plant species, their functional roles in floral bud break and dormancy release in woody perennials is still unclear. In this study, we applied transcriptome and small RNA sequencing together to systematically explore the transcriptional and post-transcriptional regulation of floral bud break in .

Nutrient Supply Is Essential for Shifting Tree Peony Reflowering Ahead in Autumn and Sugar Signaling Is Involved.

The flowering time of tree peony is short and concentrated in spring, which limits the development of its industry. We previously achieved tree peony reflowering in autumn. Here, we further shifted its reflowering time ahead through proper gibberellin (GA) treatment plus nutrient supply.

Identification and Expression Analysis of Chemosensory Genes in the Antennal Transcriptome of Chrysanthemum Aphid .

As one of the most destructive oligophagous pests, the chrysanthemum aphid () has seriously restricted the sustainable development of the chrysanthemum industry. Olfaction plays a critical role in the environmental perception of aphids, but very little is currently known about the chemosensory mechanism of . In this study, four MsanOBPs, four MsanCSPs, eight MsanORs, two MsanIRs and one MsanSNMP were identified among the 28,323 unigenes derived from the antennal transcriptome bioinformatic analysis of adults.

Asymptotic tests for Hardy-Weinberg equilibrium in hexaploids.

Hexaploids, a group of organisms containing three complete sets of chromosomes in a single nucleus, are of utmost importance to evolutionary studies and breeding programs. Many studies have focused on hexaploid linkage analysis and QTL mapping in controlled crosses, but little methodology has been developed to reveal how hexaploids diversify and evolve in natural populations. We formulate a general framework for studying the pattern of genetic variation in autohexaploid populations through testing deviation from Hardy-Weinberg equilibrium (HWE) at individual molecular markers.