Advancements in Plant Polyploidy: From Methods to Mechanisms

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Molecular Biology".

Deadline for manuscript submissions: closed (20 June 2024) | Viewed by 2129

Special Issue Editors


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Guest Editor
College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
Interests: plant physiology; biochemistry; molecular biology; stress responses; functional genomics; gene regulation
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Guest Editor
Faculty of Bioscience Engineering, Department of Plants and Crops, Ghent University, Ghent, Belgium
Interests: plants; tissue culture; plant breeding; somatic embryogenesis

Special Issue Information

Dear Colleagues,

Polyploidy, the multiplication of an entire genome resulting in an increased number of chromosomes, plays a crucial role in plant evolution. Understanding the methods and mechanisms involved in plant polyploidy is of utmost importance for advancing our knowledge in this field.

This Special Issue aims to provide a comprehensive overview of research contributions and reviews that cover a range of topics, including techniques for plant polyploidy induction, the role of polyploidy in plant evolution, genetic and epigenetic regulation of polyploidy, as well as the potential benefits and challenges associated with polyploid plants. These topics include, but are not limited to:

  1. Innovative experimental techniques for polyploidy induction and detection;
  2. Molecular mechanisms underlying polyploid formation, maintenance, and genome stability;
  3. Transcriptomic, epigenomic, and proteomic studies elucidating gene expression regulation in response to polyploidy;
  4. Evolutionary consequences and ecological impacts of polyploidization events;
  5. Polyploidy in plant improvement, including hybrid vigor, stress tolerance, and enhanced productivity.

We look forward to receiving your manuscripts and encourage you to submit your work to this Special Issue.

Prof. Dr. Liming Yang
Dr. Stefaan P. O. Werbrouck
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. Plants is an international peer-reviewed open access semimonthly 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 2700 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

  • plant polyploidy
  • hybrid vigor
  • genome stability
  • gene expression
  • polyploidization

Published Papers (2 papers)

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Research

11 pages, 8323 KiB  
Article
The Promising Potential of Triploidy in Date Palm (Phoenix dactylifera L.) Breeding
by Ahmed Othmani, Hammadi Hamza, Karim Kadri, Amel Sellemi, Leen Leus and Stefaan P. O. Werbrouck
Plants 2024, 13(6), 815; https://doi.org/10.3390/plants13060815 - 12 Mar 2024
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Abstract
Date palms are a vital part of oasis ecosystems and are an important source of income in arid and semi-arid areas. Crossbreeding is limited due to the long juvenile stage of date palms and their dioecious nature. The aim of this study was [...] Read more.
Date palms are a vital part of oasis ecosystems and are an important source of income in arid and semi-arid areas. Crossbreeding is limited due to the long juvenile stage of date palms and their dioecious nature. The aim of this study was to create triploid date palms to obtain larger and seedless fruits and to increase resilience to abiotic stresses. A tetraploid date palm mutant was crossed with a diploid male palm, yielding hundreds of seeds suspected of containing triploid embryos. Six years after planting, four palms with confirmed triploidy reached maturity. They are phenotypically distinct from diploids, with a thicker rachis, thinner spines, wider and longer midleaf spines, and a longer apical spine. They were classified as sterile bisexual, sterile male and fertile female. One of the latter produced very tasty dates with a very small seed, which is promising for the marketability and profitability of date palm fruits. This first report on triploid date palms provides a way in which to make a significant leap forward in date palm breeding. Given the vigor and fruit quality of female triploid date palms, compared to their diploid counterparts, they will be the target of breeding programs and may spearhead new oases. Full article
(This article belongs to the Special Issue Advancements in Plant Polyploidy: From Methods to Mechanisms)
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20 pages, 10498 KiB  
Article
Chromosome Doubling Enhances Biomass and Carotenoid Content in Lycium chinense
by Runan Zhang, Shupei Rao, Yuchang Wang, Yingzhi Qin, Ken Qin and Jinhuan Chen
Plants 2024, 13(3), 439; https://doi.org/10.3390/plants13030439 - 2 Feb 2024
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Abstract
Lycium chinense, a type of medicinal and edible plant, is rich in bioactive compounds beneficial to human health. In order to meet the market requirements for the yield and quality of L. chinense, polyploid induction is usually an effective way to [...] Read more.
Lycium chinense, a type of medicinal and edible plant, is rich in bioactive compounds beneficial to human health. In order to meet the market requirements for the yield and quality of L. chinense, polyploid induction is usually an effective way to increase plant biomass and improve the content of bioactive components. This study established the most effective tetraploid induction protocol by assessing various preculture durations, colchicine concentrations, and exposure times. The peak tetraploid induction efficacy, 18.2%, was achieved with a 12-day preculture and 24-h exposure to 50 mg L–1 colchicine. Compared to diploids, tetraploids exhibited potentially advantageous characteristics such as larger leaves, more robust stems, and faster growth rates. Physiologically, tetraploids demonstrated increased stomatal size and chloroplast count in stomata but reduced stomatal density. Nutrient analysis revealed a substantial increase in polysaccharides, calcium, iron, and zinc in tetraploid leaves. In addition, seventeen carotenoids were identified in the leaves of L. chinense. Compared to the diploid, lutein, β-carotene, neoxanthin, violaxanthin, and (E/Z)-phytoene exhibited higher levels in tetraploid strains T39 and T1, with T39 demonstrating a greater accumulation than T1. The findings suggest that the generated tetraploids harbor potential for further exploitation and lay the foundation for the selection and breeding of novel genetic resources of Lycium. Full article
(This article belongs to the Special Issue Advancements in Plant Polyploidy: From Methods to Mechanisms)
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