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Horticulturae
Special Issues
Evaluation, Protection, and Efficient Utilization of Excellent Resources of Peony
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Evaluation, Protection, and Efficient Utilization of Excellent Resources of Peony

A special issue of Horticulturae (ISSN 2311-7524). This special issue belongs to the section "Genetics, Genomics, Breeding, and Biotechnology (G2B2)".

Deadline for manuscript submissions: closed (20 October 2023) | Viewed by 4352

Special Issue Editors

Dr. Shunli Wang

E-Mail Website
Guest Editor
Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Interests: peony; flowering; chemical compound identification; edible food development; medicinal compound
Dr. Shanshan Li

E-Mail Website
Guest Editor
Institute of Botany, Chinese Academy of Sciences, Beijing 100081, China
Interests: Paeonia; floral scent; flower color; terpenoid; polyphenol; molecular mechanism

Special Issue Information

Dear Colleagues,

Peony is of great medicinal, ornamental, edible, oil, and economic value, and it can provide not only fresh flowers, but also most of the oil (α-Linolenic acid), vitamins, minerals, antioxidants, medicinal materials, and bioactivity substances that are necessary for humans. Many more products, including medicine, beer, milk powder, cosmetics, etc., have also been developed. However, good peony resources are still needed for the development and utilization of peonies. Additionally, further investigations should be carried out on the genes and genomes underlying the most important peony traits and metabolism synthesis, the functions of bioactivity substances should be analyzed, and new products should be developed to advance the peony industry. With the increasing societal demand for a better, healthier, and longer life, the exploration and utilization of peony resources are incredibly necessary. Therefore, new strategies for the evaluation and utilization of peony resources and deciphering of the mechanisms of regulation of important economic and agronomic traits are urgently needed. This Special Issue aims to offer an overview of the most recent advances in the evaluation, utilization, and product development of peonies. Particularly, this Special Issue aims to publish selected contributions on advances in the evaluation, gene exploration, and efficient utilization of excellent resources of peony.

Potential topics include but are not limited to:

  • Evaluation of peony resources;
  • Excellent gene exploration;
  • Cultivation and tissue culture;
  • Molecular mechanisms of important economic and agronomic traits;
  • Mechanisms of important metabolite synthesis;
  • Function of peony extractions;
  • Edible food development;
  • Role of chemical compounds in medicine.

Dr. Shunli Wang
Dr. Shanshan Li
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. Horticulturae 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 2200 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

  • peony
  • germplasm evaluation
  • gene clone
  • mechanisms of important characters
  • cultivation
  • medicinal compound
  • edible food development
  • antioxidant

Published Papers (3 papers)

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Research

20 pages, 5629 KiB  
Article
Selection and Validation of miRNA Reference Genes by Quantitative Real-Time PCR Analysis in Paeonia suffruticosa
by Chenjie Zhang, Chengwei Song, Linfeng Chen, Huili Ma, Yabing Zhang, Dalong Guo, Lili Guo and Xiaogai Hou
Horticulturae 2023, 9(2), 148; https://doi.org/10.3390/horticulturae9020148 - 22 Jan 2023
Cited by 2 | Viewed by 1251
Abstract
The miRNA, a kind of endogenous non-coding small RNA, plays an essential role in regulation of gene expression in plants. Quantitative real-time PCR (qRT-PCR) assay is one of the most common methods used for quantification of miRNA expression, and levels of expression are [...] Read more.
The miRNA, a kind of endogenous non-coding small RNA, plays an essential role in regulation of gene expression in plants. Quantitative real-time PCR (qRT-PCR) assay is one of the most common methods used for quantification of miRNA expression, and levels of expression are normalized by comparing with reference genes. The present study was intended to identify the appropriate reference genes for normalizing the level of miRNA expression in various developmental stages and tissues such as the bud development process, flower development stages, and different tissues of tree peony of different flowering times. Five algorithms (Delta Ct, geNorm, NormFinder, BestKeeper, and RefFinder) were used for stability analysis. The results showed that mtr-MIR160b-p3 and gma-miR394a-5p were the most stable miRNAs expressed during the bud development process of early-flowering tree peony ‘Feng dan’; PC-5p-19095 was the most stable during the bud development process of late-flowering tree peony ‘Lian he’, followed by gma-miR394a-5p and mtr-MIR160b-p3; the mtr-miR159a was the most stable miRNA expressed in the flower development stages of different tree peony varieties. The PC-3p-871 was the most stable miRNA expressed in different tissues of early-flowering tree peony ‘Feng dan’, followed by PC-5p-4, and PC-5p-4 was the most stable in late-flowering tree peony ‘Lian he’, followed by the mtr-miR168b. The findings of this study provide a reference for studying the changes in miRNA expression, and further exploring the regulatory mechanism of miRNA in tree peony. Full article
(This article belongs to the Special Issue Evaluation, Protection, and Efficient Utilization of Excellent Resources of Peony)
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16 pages, 3220 KiB  
Article
Study on Heat Resistance of Peony Using Photosynthetic Indexes and Rapid Fluorescence Kinetics
by Zhijun Li, Wen Ji, Erman Hong, Zhen Fan, Bangyu Lin, Xuanze Xia, Xia Chen and Xiangtao Zhu
Horticulturae 2023, 9(1), 100; https://doi.org/10.3390/horticulturae9010100 - 12 Jan 2023
Cited by 3 | Viewed by 1462
Abstract
To investigate the effects of high-temperature stress on the chlorophyll fluorescence induction kinetics of peony and to determine indicators for the rapid screening of varieties responding to high temperatures, three four-year-old peony variety, ‘Fengdanbai’, ‘Huhong’, and ‘Yinhongqiaodui’, were selected as materials. The photosynthetic [...] Read more.
To investigate the effects of high-temperature stress on the chlorophyll fluorescence induction kinetics of peony and to determine indicators for the rapid screening of varieties responding to high temperatures, three four-year-old peony variety, ‘Fengdanbai’, ‘Huhong’, and ‘Yinhongqiaodui’, were selected as materials. The photosynthetic curves (Pn-PAR) and fast chlorophyll fluorescence curves (OJIP curves) of peony leaves were measured at different times under high-temperature stress conditions (40 °C), the changes in the photosynthetic characteristics of different peony varieties under high-temperature stress were analyzed, and the heat tolerance of peony was evaluated. The results showed that ‘Huhong’ grew well within 16 days, while all of the other varieties showed obvious wilting at 6–9 days. High temperatures damaged the structure and function of the photosystem of peony leaves, indicating that the maximum net photosynthetic rate (Pnmax), apparent quantum efficiency (AQE), maximum photochemical efficiency (Fv/Fm), and photosynthetic performance index (PIABS) all tended to decrease under high-temperature stress, while the rate of closing the PS II reaction center (Mo) and the absorption per reaction center (ABS/RC), the capture (TRo/RC), and the dissipation (Dio/RC) of light energy per reaction center showed an overall increasing trend. The ability to cope with high-temperature stress differed among varieties, and the heat tolerance was determined to be in the descending order of ‘Fengdanbai’ < ‘Yinhongqiaodui’ < ‘Huhong’. The correlation analysis among the parameters and the analysis of the morphological change patterns in peony leaves concluded that PIABS, Dio/RC, and Mo could be used as indicators of peony tolerance to high-temperature stress. The results of the study can provide a basis for the screening of heat-tolerant peony species and peony heat defense in the Jiangnan area. Full article
(This article belongs to the Special Issue Evaluation, Protection, and Efficient Utilization of Excellent Resources of Peony)
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11 pages, 3949 KiB  
Article
Functional Analysis of PsARRO−1 in Root Development of Paeonia suffruticosa
by Yuke Sun, Wenqian Shang, Junhui Yuan, Zheng Wang, Songlin He, Yinglong Song, Liyun Shi, Yuxiao Shen, Jie Ma, Yufeng Xu and Jiange Wang
Horticulturae 2022, 8(10), 903; https://doi.org/10.3390/horticulturae8100903 - 01 Oct 2022
Cited by 1 | Viewed by 1178
Abstract
The adventitious rooting−related oxygenase (ARRO−1) gene is specifically expressed in the early rooting stage and is considered a molecular marker of rooting. In this study, a PsARRO−1 gene (GenBank accession number KJ620008) was identified from a pre−constructed transcriptome database of root [...] Read more.
The adventitious rooting−related oxygenase (ARRO−1) gene is specifically expressed in the early rooting stage and is considered a molecular marker of rooting. In this study, a PsARRO−1 gene (GenBank accession number KJ620008) was identified from a pre−constructed transcriptome database of root development of Paeonia suffruticosa under sandy loam cultivation. The expression was verified by RT−qPCR, and it was found that the expression trend was consistent with the expression in the transcriptome database. The PsARRO−1 gene was specifically highly expressed during the root primordium germination phase. In addition, the RT−qPCR analysis indicated that the expression of PsARRO−1 in roots was significantly higher than in stems and leaves, its peak expression in vitro was 5 days earlier than in soil, and its expression was higher than that of tree peony in soil. Subcellular localization analysis showed that PsARRO−1 was localized in the plasma membrane. Moreover, the transient silent expression of the PsARRO−1 gene was found in the roots of peony seedlings grown using VIGS technology. The root activity was significantly reduced after transient silencing of the expression of the PsARRO−1 gene. These results indicate that PsARRO−1 has a positive regulatory effect on tree peony root development. Full article
(This article belongs to the Special Issue Evaluation, Protection, and Efficient Utilization of Excellent Resources of Peony)
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