Genome assembly and resequencing analyses provide new insights into the evolution, domestication and ornamental traits of crape myrtle.

Crape myrtle () is a globally used ornamental woody plant and is the representative species of . However, studies on the evolution and genomic breeding of have been hindered by the lack of a reference genome. Here we assembled the first high-quality genome of using PacBio combined with Hi-C scaffolding to anchor the 329.

 (Rosaceae), a new species from Yunnan, China.

A new species and its variant R.funingensisf.rosea, both collected from Yunnan Province, China, are, for the first time, documented and illustrated in this study.

Whole-Genome Identification of Regulatory Function of CDPK Gene Families in Cold Stress Response for and var. Tortuosa.

Calcium-dependent protein kinases (CDPK) are known to mediate plant growth and development and respond to various environmental changes. Here, we performed whole-genome identification of CDPK families in cultivated and wild mei (). We identified 14 and 17 CDPK genes in and var.

Genomic Resequencing Unravels the Genetic Basis of Domestication, Expansion, and Trait Improvement in Morus Atropurpurea.

Mulberry is an economically important plant in the sericulture industry and traditional medicine. However, the genetic and evolutionary history of mulberry remains largely unknown. Here, this work presents the chromosome-level genome assembly of Morus atropurpurea (M.

Genome-Wide Identification of the and Gene Families in Response to Cold Stress in .

Protein kinases of the MAPK cascade family (MAPKKK-MAPKK-MAPK) play an essential role in plant stress response and hormone signal transduction. However, their role in the cold hardiness of (Mei), a class of ornamental woody plant, remains unclear. In this study, we use bioinformatic approaches to assess and analyze two related protein kinase families, namely, MAP kinases (MPKs) and MAPK kinases (MKKs), in wild and its variety var.

Corrigendum: Genome-wide identification of Aux/IAA gene family and their expression analysis in .

[This corrects the article DOI: 10.3389/fgene.2022.

FsHemF is involved in the formation of yellow Forsythia leaves by regulating chlorophyll synthesis in response to light intensity.

The leaves of Forsythia koreana 'Suwon Gold' are yellow under natural light condition and can revert to green when the light intensity is reduced. To understand the molecular mechanism of leaf color changes in response to light intensity, we compared the chlorophyll content and precursor content between yellow- and green-leaf Forsythia under shade and light-recovery conditions. We identified the conversion of coproporphyrin III (Coprogen III) to protoporphyrin IX (Proto IX) as the primary rate-limiting step of chlorophyll biosynthesis in yellow-leaf Forsythia.

The Secrets of Meristems Initiation: Axillary Meristem Initiation and Floral Meristem Initiation.

The branching phenotype is an extremely important agronomic trait of plants, especially for horticultural crops. It is not only an important yield character of fruit trees, but also an exquisite ornamental trait of landscape trees and flowers. The branching characteristics of plants are determined by the periodic initiation and later development of meristems, especially the axillary meristem (AM) in the vegetative stage and the floral meristem (FM) in the reproductive stage, which jointly determine the above-ground plant architecture.

Study on the Flower Induction Mechanism of .

The flower induction of "Endless Summer" is regulated by a complex gene network that involves multiple signaling pathways to ensure continuous flowering throughout the growing season, but the molecular determinants of flower induction are not yet clear. In this study, genes potentially involved in signaling pathway mediating the regulatory mechanism of flower induction were identified through the transcriptomic profiles, and a hypothetical model for this regulatory mechanism was obtained by an analysis of the available transcriptomic data, suggesting that sugar-, hormone-, and flowering-related genes participated in the flower induction process of "Endless Summer". The expression profiles of the genes involved in the biosynthesis and metabolism of sugar showed that the beta-amylase gene displayed a high expression level at the BS2 stage and implied the hydrolysis of starch.

The plastome reveals new insights into the evolutionary and domestication history of peonies in East Asia.

Backgroud: Paeonia holds considerable value in medicinal, ornamental horticultural, and edible oil industries, but the incomplete state of phylogenetic research in this genus poses a challenge to the effective conservation and development of wild germplasm, and also impedes the practical utilization of existing cultivars. Due to its uniparental inheritance and lack of recombination, the plastome (i.e.

Genes Were Involved in Regulating Axillary Bud Formation of × .

Branching is an important agronomic and economic trait in cut chrysanthemums. The axillary meristem (AM) formation of the axillary buds of cut chrysanthemums has a decisive role in its branching characteristics. However, little is known about the regulation mechanism of axillary meristem formation in chrysanthemums at the molecular level.

The mechanisms of optimal nitrogen conditions to accelerate flowering of Chrysanthemum vestitum under short day based on transcriptome analysis.

Nitrogen (N) plays an important role in the development of plants, with N application having been shown to accelerate flowering of cultivated plants. However, the mechanism of optimal N conditions to accelerate flowering of short-day plants is still unclear. In this study, it was found that Chrysanthemum vestitum is a typical short-day plant like most chrysanthemum varieties, and its flowering must go through a short-day induction stage.

Populus D-type cyclin gene PsnCYCD1;1 accelerates cell division and participates in secondary growth of vascular bundles.

Plant growth and development rely heavily on cyclins, which comprise an important class of cell division regulators. D-type cyclins (CYCDs) are responsible for the rate-limiting step of G1 cells. In the plant kingdom, despite the importance of CYCDs in herbaceous plants, there is little knowledge of these proteins in perennial woody plants.

Effect of the pectin contents and nanostructure on the stem straightness of two cultivars.

Herbaceous peony ( Pall.) is an ancient ornamental crop and, in recent decades, an emerging popular cut flower. Straight stems are a vital criterion for cut herbaceous peony selection, while many cultivars bend as the plant develops.

Genome-wide identification and characterization analysis of RWP-RK family genes reveal their role in flowering time of Chrysanthemum lavandulifolium.

Background: RWP-RKs are plant specific transcription factors, which are widely distributed in plants in the form of polygenic families and play key role in nitrogen absorption and utilization, and are crucial to plant growth and development. However, the genome-wide identification and function of RWP-RK in Compositae plants are widely unknown.

Results: In this study, 101 RWP-RKs in Chrysanthemum lavandulifolium were identified and tandem repeat was an important way for the expansion of RWP-RKs in Compositae species.

Effective Induction of Fertile Gametes in Oriental × Trumpet (OT) Lily by High Temperatures.

Lily is a very important bulb crop, and interspecific distant hybridization is a crucial method of lily breeding. However, F interspecific hybrids tend to be highly sterile due to low levels of genetic homozygosity. This can be addressed by meiotic polyploidization, which has the advantage of reducing breeding time and being able to promote genetic recombination resulting in many variant progenies.

Genome-wide identification of the MIKCc-type MADS-box gene family in reveals their roles in the capitulum development.

× is well known throughout the world for its diverse and exquisite flower types. However, due to the complicated genetic background of ×, it is difficult to understand the molecular mechanism of its flower development. And it limits the molecular breeding of improving chrysanthemum flower types.

Floral Development Stage-Specific Transcriptomic Analysis Reveals the Formation Mechanism of Different Shapes of Ray Florets in Chrysanthemum.

The formation mechanism of different ray floret shapes of chrysanthemum ( × ) remains elusive due to its complex genetic background. , with the basic ray floret shapes of the flat, spoon, and tubular types, is considered a model material for studying ray floret morphogenesis. In this study, the flat and tubular type lines of at specific stages were used to investigate the key genes that regulate morphological differences in ray florets.

Xylem development and phloem conductivity in relation to the stem mechanical strength of Paeonia lactiflora.

The quality of cut Paeonia lactiflora flowers is limited by their low stem mechanical strength, but the underlying mechanism of this low strength is poorly understood. In this study, two P. lactiflora cultivars with distinct stem mechanical strengths (Chui Touhong with low stem mechanical strength and Da Fugui with high stem mechanical strength) were used as test materials.

The complete chloroplast genome of and its phylogenetic analysis.

Wall. ex G. Don, 1837 is an important medicinal plant belonging to the genus in the Apocynaceae family.

Transcriptome sequencing and gene expression analysis revealed early ovule abortion of Paeonia ludlowii.

Background: Paeonia ludlowii (Stern & G. Taylor D.Y.

Specific-Locus Amplified Fragment Sequencing (SLAF-Seq).

Specific length amplified fragment sequencing (SLAF-seq) technology is a simplified genome sequencing technology based on next-generation sequencing. SLAF-seq technology has several distinguishing characteristics: 1. Deep sequencing to ensure accuracy of genotyping; 2.

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.