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Genetic Studies of Ornamental Horticulture and Floriculture
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Genetic Studies of Ornamental Horticulture and Floriculture

A special issue of Genes (ISSN 2073-4425). This special issue belongs to the section "Plant Genetics and Genomics".

Deadline for manuscript submissions: closed (15 July 2023) | Viewed by 4663

Special Issue Editors

Prof. Dr. Zhixiong Liu

E-Mail Website
Guest Editor
College of Horticulture and Gardening, Yangtze University, Jingzhou, China
Interests: flower development; flower organ identity specification; germplasm innovation and breeding technology of garden plants; genetics
Dr. Danlong Jing

E-Mail Website
Guest Editor
College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
Interests: flowering time; flower organ development; flower and leaf color; horticulture plant germplasms

Special Issue Information

Dear Colleagues,

Ornamental plants beautify our living environment with striking colors, pleasant flower scents, and attractive morphology. The recent progress of biotechnology, such as genome assembly, genetic transformation, genome editing, and metabolomics, etc., has been extensively harnessed in ornamental plants and has rapidly accelerated the development of ornamental horticulture and floriculture. The purpose of this Special Issue is to address the achievements of biotechnology, genetics, and breeding in ornamental horticulture and/or floriculture. Original research articles and reviews are encouraged regarding, but not limited to, the following areas:

  • Biotic- or abiotic-stress-resistant gene functions of ornamental plants;
  • Genome editing and genetic transformation research and application in ornamental plants;
  • Molecular regulatory mechanisms of key traits of ornamental plants;
  • Ornamental plants’ genetics and germplasm innovation;
  • Genetic transformations and genome editing for modifying and improving the key traits of ornamental plants;
  • Flower size, color, scent, dormancy, and morphology-regulated genes and networks;
  • Regulatory mechanisms of ornamental plant growth and development;
  • Flowering, inflorescence architecture, and flower organ identity determination.

Prof. Dr. Zhixiong Liu
Dr. Danlong Jing
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Genes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • molecular genetics
  • flowering
  • flower development
  • flower and/or leaf color
  • flower scent
  • flower size
  • flower and inflorescence morphology
  • genetic transformation
  • biotechnology
  • molecular mechanism
  • transcriptomics
  • metabolomics
  • genomics
  • QTL/gene mapping
  • marker-assisted selection
  • gene identification
  • key traits of ornamental plants
  • genome editing
  • ornamental plants
  • gene regulation
  • transcriptional regulators
  • growth and development
  • genetic resources
  • resistance/tolerance
  • abiotic and biotic stress
  • epigenomics

Published Papers (3 papers)

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Research

15 pages, 5397 KiB  
Article
Genome-Wide Analysis of DREB Family Genes and Characterization of Cold Stress Responses in the Woody Plant Prunus nana
by Cheng Qian, Lulu Li, Huanhuan Guo, Gaopu Zhu, Ning Yang, Xiaoyan Tan and Han Zhao
Genes 2023, 14(4), 811; https://doi.org/10.3390/genes14040811 - 28 Mar 2023
Cited by 1 | Viewed by 1354
Abstract
Dehydration response element binding factor (DREB) is a family of plant-specific transcription factors, whose members participate in the regulation of plant responses to various abiotic stresses. Prunus nana, also known as the wild almond, is a member of the Rosaceae family that [...] Read more.
Dehydration response element binding factor (DREB) is a family of plant-specific transcription factors, whose members participate in the regulation of plant responses to various abiotic stresses. Prunus nana, also known as the wild almond, is a member of the Rosaceae family that is rare and found to grow in the wild in China. These wild almond trees are found in hilly regions in northern Xinjiang, and exhibit greater drought and cold stress resistance than cultivated almond varieties. However, the response of P. nana DREBs (PnaDREBs) under low temperature stress is still unclear. In this study, 46 DREB genes were identified in the wild almond genome, with this number being slightly lower than that in the sweet almond (Prunus dulcis cultivar ‘Nonpareil’). These DREB genes in wild almond were separated into two classes. All PnaDREB genes were located on six chromosomes. PnaDREB proteins that were classified in the same groups contained specific shared motifs, and promoter analyses revealed that PnaDREB genes harbored a range of stress-responsive elements associated with drought, low-temperature stress, light responsivity, and hormone-responsive cis-regulatory elements within their promoter regions. MicroRNA target site prediction analyses also suggested that 79 miRNAs may regulate the expression of 40 of these PnaDREB genes, with PnaDREB2. To examine if these identified PnaDREB genes responded to low temperature stress, 15 of these genes were selected including seven homologous to Arabidopsis C-repeat binding factor (CBFs), and their expression was assessed following incubation for 2 h at 25 °C, 5 °C, 0 °C, −5 °C, or −10 °C. In summary, this analysis provides an overview of the P. nana PnaDREB gene family and provides a foundation for further studies of the ability of different PnaDREB genes to regulate cold stress responses in almond plants. Full article
(This article belongs to the Special Issue Genetic Studies of Ornamental Horticulture and Floriculture)
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16 pages, 3695 KiB  
Article
Floral Development Stage-Specific Transcriptomic Analysis Reveals the Formation Mechanism of Different Shapes of Ray Florets in Chrysanthemum
by Ya Pu, Minling Liao, Junzhuo Li, Yuankai Tian, Zhongman Wang, Xiang Song and Silan Dai
Genes 2023, 14(3), 766; https://doi.org/10.3390/genes14030766 - 21 Mar 2023
Cited by 2 | Viewed by 1497
Abstract
The formation mechanism of different ray floret shapes of chrysanthemum (Chrysanthemum × morifolium) remains elusive due to its complex genetic background. C. vestitum, with the basic ray floret shapes of the flat, spoon, and tubular types, is considered a model [...] Read more.
The formation mechanism of different ray floret shapes of chrysanthemum (Chrysanthemum × morifolium) remains elusive due to its complex genetic background. C. vestitum, 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 C. vestitum at specific stages were used to investigate the key genes that regulate morphological differences in ray florets. We found that the expression levels of genes related to auxin synthesis, transport, and response were generally higher in the tubular type than in the flat type. CvARF3 was highly expressed in the flat type, while CvARF5 and CvARF6 were highly expressed in the tubular type. Additionally, the transcription levels of Class B and E genes closely related to petal development, including CvPI, CvAP3, Cvdefh21, CvSEP3, and CvCDM77, were expressed at higher levels in the tubular type than the flat type. Based on the results, it is proposed that auxin plays a key role in the development of ray florets, and auxin-related genes, especially CvARFs, may be key genes to control the morphological difference of ray florets. Simultaneously, MADS-box genes are involved in the co-regulation of ray floret morphogenesis. The results provide novel insights into the molecular mechanism of different petal type formation and lay a theoretical foundation for the directional breeding of petal type in chrysanthemums. Full article
(This article belongs to the Special Issue Genetic Studies of Ornamental Horticulture and Floriculture)
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13 pages, 6283 KiB  
Article
LhANS-rr1, LhDFR, and LhMYB114 Regulate Anthocyanin Biosynthesis in Flower Buds of Lilium ‘Siberia’
by Shaozhong Fang, Mi Lin, Muhammad Moaaz Ali, Yiping Zheng, Xiaoyan Yi, Shaojuan Wang, Faxing Chen and Zhimin Lin
Genes 2023, 14(3), 559; https://doi.org/10.3390/genes14030559 - 23 Feb 2023
Cited by 2 | Viewed by 1405
Abstract
The bulb formation of Lilium is affected by many physiological and biochemical phenomena, including flower bud differentiation, starch and sucrose accumulation, photoperiod, carbon fixation, plant hormone transduction, etc. The transcriptome analysis of flower buds of Lilium hybrid ‘Siberia’ at different maturity stages showed [...] Read more.
The bulb formation of Lilium is affected by many physiological and biochemical phenomena, including flower bud differentiation, starch and sucrose accumulation, photoperiod, carbon fixation, plant hormone transduction, etc. The transcriptome analysis of flower buds of Lilium hybrid ‘Siberia’ at different maturity stages showed that floral bud formation is associated with the accumulation of anthocyanins. The results of HPLC-MS showed that cyanidin is the major anthocyanin found in Lilium ‘Siberia’. Transcriptome KEGG enrichment analysis and qRT-PCR validation showed that two genes related to flavonoid biosynthesis (LhANS-rr1 and LhDFR) were significantly up-regulated. The functional analysis of differential genes revealed that LhMYB114 was directly related to anthocyanin accumulation among 19 MYB transcription factors. Furthermore, the qRT-PCR results suggested that their expression patterns were very similar at different developmental stages of the lily bulbs. Virus-induced gene silencing (VIGS) revealed that down-regulation of LhANS-rr1, LhDFR, and LhMYB114 could directly lead to a decrease in anthocyanin accumulation, turning the purple phenotype into a white color. Moreover, this is the first report to reveal that LhMYB114 can regulate anthocyanin accumulation at the mature stage of lily bulbs. The accumulation of anthocyanins is an important sign of lily maturity. Therefore, these findings have laid a solid theoretical foundation for further discussion on lily bulb development in the future. Full article
(This article belongs to the Special Issue Genetic Studies of Ornamental Horticulture and Floriculture)
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