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Orchid Biochemistry 3.0
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Orchid Biochemistry 3.0

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (30 January 2024) | Viewed by 2104

Special Issue Editor

Prof. Dr. Jen-Tsung Chen

E-Mail Website
Guest Editor
Department of Life Sciences, National University of Kaohsiung, Kaohsiung 811, Taiwan
Interests: bioactive compounds; chromatography techniques; medicinal plants; phytochemicals; plant biotechnology; plant growth regulators; plant secondary metabolites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is the continuation of our previous Special Issues "Orchid Biochemistry" and "Orchid Biochemistry 2.0".

Orchidaceae is one of the largest families among the angiosperms and is represented by approximately 25,000–28,000 species worldwide across a wide range of habitats. Orchids are well known for their attractive flowers and have high economical value in the global horticultural market. Less attention is often given to the fact that some orchids are edible or scented, and more than this, many species have long been used in preparations as traditional medicine. In the past two decades, extensive studies have been carried out on genetic and functional genomic analysis to achieve progress in biotechnology and breeding programs for orchids. However, in-depth research on the bioactive compounds of orchids is still limited to several species.

In order to address the lack of phytochemical knowledge, this Special Issue aims to integrate recent innovative approaches and attempts to make significant progress in orchid biochemistry by expanding our knowledge on a wide range of topics, including biosynthetic machinery, pharmacognosy, biotechnology, and high-throughput technologies, including bioinformatics and other related topics.

Prof. Dr. Jen-Tsung Chen
Guest Editor

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. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. There is an Article Processing Charge (APC) for publication in this open access journal. For details about the APC please see here. 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

  • biochemistry
  • bioinformatics
  • biosynthetic machinery
  • flower scent
  • gene expression
  • genomics
  • high-throughput technologies
  • metabolomics
  • orchid
  • pharmacognosy
  • pharmacology
  • proteomics
  • traditional medicine
  • transcriptomics

Published Papers (2 papers)

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Research

19 pages, 17747 KiB  
Article
Genome-Wide Identification, Expression, and Molecular Characterization of the CONSTANS-like Gene Family in Seven Orchid Species
by Yonglu Wei, Jianpeng Jin, Zengyu Lin, Chuqiao Lu, Jie Gao, Jie Li, Qi Xie, Wei Zhu, Genfa Zhu and Fengxi Yang
Int. J. Mol. Sci. 2023, 24(23), 16825; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms242316825 - 27 Nov 2023
Viewed by 818
Abstract
The orchid is one of the most distinctive and highly valued flowering plants. Nevertheless, the CONSTANS-like (COL) gene family plays significant roles in the control of flowering, and its functions in Orchidaceae have been minimally explored. This research identified 68 potential [...] Read more.
The orchid is one of the most distinctive and highly valued flowering plants. Nevertheless, the CONSTANS-like (COL) gene family plays significant roles in the control of flowering, and its functions in Orchidaceae have been minimally explored. This research identified 68 potential COL genes within seven orchids’ complete genome, divided into three groups (groups I, II, and III) via a phylogenetic tree. The modeled three-dimensional structure and the conserved domains exhibited a high degree of similarity among the orchid COL proteins. The selection pressure analysis showed that all orchid COLs suffered a strong purifying selection. Furthermore, the orchid COL genes exhibited functional and structural heterogeneity in terms of collinearity, gene structure, cis-acting elements within their promoters, and expression patterns. Moreover, we identified 50 genes in orchids with a homology to those involved in the COL transcriptional regulatory network in Arabidopsis. Additionally, the first overexpression of CsiCOL05 and CsiCOL09 in Cymbidium sinense protoplasts suggests that they may antagonize the regulation of flowering time and gynostemium development. Our study will undoubtedly provide new resources, ideas, and values for the modern breeding of orchids and other plants. Full article
(This article belongs to the Special Issue Orchid Biochemistry 3.0)
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21 pages, 5489 KiB  
Article
Heat Stress Alleviation by Exogenous Calcium in the Orchid Dendrobium nobile Lindl: A Biochemical and Transcriptomic Analysis
by Yijun Fan, Jie Ma, Yuanyuan Liu, Xueyan Tan, Xuebing Li, Erya Xu, Linlong Xu and Aoxue Luo
Int. J. Mol. Sci. 2023, 24(19), 14692; https://0-doi-org.brum.beds.ac.uk/10.3390/ijms241914692 - 28 Sep 2023
Viewed by 810
Abstract
The growth of Dendrobium nobile is sensitive to heat stress. To find an effective method for enhancing heat tolerance, this study investigated the relieving effect of exogenous calcium at different concentrations (0 mmol/L, 5 mmol/L, 10 mmol/L, 15 mmol/L, 20 mmol/L CaCl2 [...] Read more.
The growth of Dendrobium nobile is sensitive to heat stress. To find an effective method for enhancing heat tolerance, this study investigated the relieving effect of exogenous calcium at different concentrations (0 mmol/L, 5 mmol/L, 10 mmol/L, 15 mmol/L, 20 mmol/L CaCl2) on heat stress in D. nobile. Principal component analysis was used to screen the optimal exogenous calcium concentration, and transcriptome analysis was used to reveal its possible heat tolerance mechanism. The results showed that compared with the T0, a 10 mmol/L calcium treatment: increased the average leaf length, leaf width, plant height, and fresh matter accumulation of D. nobile by 76%, 103.39%, 12.97%, and 12.24%, respectively (p < 0.05); significantly increased chlorophyll a (Chla), chlorophyll b (Chlb), carotenoids(Car), ascorbic acid (ASA), glutathione (GSH), and flavonoids by 15.72%, 8.54%, 11.88%, 52.17%, 31.54%, and 36.12%, respectively; and effectively enhanced the enzyme activity of the antioxidant system, increasing superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) by 1.38, 1.61, and 2.16 times, respectively (p < 0.05); At the same time, the treatment can effectively reduce the yellow leaf rate and defoliation rate of D. nobile under heat stress. The principal component analysis method and membership function were used to calculate the D value to rank the relief effects of each calcium treatment group, and the results also showed that 10 mmol/L CaCl2 had the best relief effect. Transcriptomics testing identified 7013 differentially expressed genes, of which 2719 were upregulated, and 294 were downregulated. Among them, genes such as HSPA1s, HSP90A, HSPBP1, ATG8, COMT, REF1, E1.11.1.7, along with transcription factors such as MYB, bHLH, WRKY, and NAC, formed the network of tolerance to heat stress in D. nobile. This study provides new insights for improving the cultivation techniques of D. nobile. Full article
(This article belongs to the Special Issue Orchid Biochemistry 3.0)
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