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Molecular Basis of Chilling-Mediated Flowering in Woody Plant
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Molecular Basis of Chilling-Mediated Flowering in Woody Plant

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 2533

Special Issue Editor

Dr. Guo-Qing Song

E-Mail Website
Guest Editor
Plant Biotechnology Resource and Outreach Center, Department of Horticulture, Michigan State University, East Lansing, MI 48824, USA
Interests: improvement of horticultural crops using genomics, genetic, and biotechnological tools; development of efficient plant micropropagation, regeneration and transformation techniques

Special Issue Information

Dear Colleagues,

Prolonged exposure to cold temperatures during winter for plant flowering is termed vernalization for annual plants and chilling requirement for temperate woody plants. The difference between vernalization and chilling requirement is, at least in part, that vernalization promotes floral transition and chilling requirement facilitates dormancy release. The molecular mechanism underlying the vernation pathway of annual plants has been extensively studied. In contrast, there remains a lack of understanding of the molecular basis of chilling requirement flowering in woody plants, due mainly to a lack of effective tools for functional gene analysis. With climate change, insufficient chilling can reduce fruit production by reducing bud break or lessening flower quality. It is of great importance to reveal the molecular mechanism of chilling-mediated flowering in woody plants. Therefore, we invite manuscripts to explore emerging approaches for deciphering the molecular basis of chilling requirement in woody plants’ flowering.

Dr. Guo-Qing Song
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. 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

  • chilling requirement
  • dormancy release
  • endodormancy
  • flower bud formation
  • flowering time control
  • fruit crops
  • vernalization
  • woody plant

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Published Papers (1 paper)

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Research

21 pages, 2777 KiB  
Article
Small RNA Differential Expression Analysis Reveals miRNAs Involved in Dormancy Progression in Sweet Cherry Floral Buds
by Esteban Soto, Evelyn Sanchez, Carlos Nuñez, Christian Montes, Karin Rothkegel, Paola Andrade, Humberto Prieto and Andrea Miyasaka Almeida
Plants 2022, 11(18), 2396; https://doi.org/10.3390/plants11182396 - 14 Sep 2022
Cited by 1 | Viewed by 2188
Abstract
In sweet cherry (Prunus avium), as in other temperate woody perennials, bud dormancy allows for survival in adverse environmental conditions during winter. During this process, environmental signals such as short days and/or low temperatures trigger internal signals that enable buds to [...] Read more.
In sweet cherry (Prunus avium), as in other temperate woody perennials, bud dormancy allows for survival in adverse environmental conditions during winter. During this process, environmental signals such as short days and/or low temperatures trigger internal signals that enable buds to become tolerant to the cold. The process involves tracking chilling units up to chilling the requirement fulfillment to resume growth, a transition involving transcriptional regulation, metabolic signaling, and epigenetic-related regulatory events. Massive sequencing of small RNAs was performed to identify miRNAs involved in sweet cherry dormancy by comparing their expression in field (regular seasonal) and controlled non-stop (continuous) chilling conditions. miRNAs highlighted by sequencing were validated using specific stem-loop PCR quantification, confirming expression patterns for known miRNAs such as miR156e, miR166c, miR172d, miR391, miR482c, and miR535b, as well as for newly proposed miRNAs. In silico prediction of the target genes was used to construct miRNA/target gene nodes. In particular, the involvement of the sweet cherry version for the miR156/SQUAMOSA PROMOTER-BINDING-LIKE PROTEIN genes whose expression was opposite in the two conditions suggests their involvement on dormancy regulation in sweet cherry. miRNA levels indicate that the regulation of stress-related genes and hormone synthesis modulates the expression of calcium metabolism and cell development-associated genes. Understanding the regulatory networks involved in sweet cherry dormancy, particularly in the context of miRNA involvement, represents the first step in the development of new agricultural strategies that may help overcome the increasing challenges presented by global climate change. Full article
(This article belongs to the Special Issue Molecular Basis of Chilling-Mediated Flowering in Woody Plant)
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