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Genes
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Genetic Basis and Physiology of Fruit Ripening and Abscission
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Genetic Basis and Physiology of Fruit Ripening and Abscission

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

Deadline for manuscript submissions: closed (26 August 2021) | Viewed by 8948

Special Issue Editors

Dr. Maria-Carmen Gomez-Jimenez

E-Mail Website
Guest Editor
Department of Plant Biology, Ecology and Earth Sciences, Universidad de Extremadura, Badajoz, Spain
Interests: fruit ripening and abscission; plant physiology; plant genomics, plant hormone; transcriptional regulation; melon; olive
Dr. Brian Jones

E-Mail Website
Guest Editor
School of Life and Environmental Sciences, The University of Sydney, Sydney, Australia
Interests: plant genomics; plant biology; plant molecular biology; fruit ripening; fruit quality; plant hormone
Dr. Iraida Amaya

E-Mail Website
Guest Editor
Instituto Andaluz de Investigacióny Formación Agraria y Pesquera, Area de Genómica y Biotecnología, Centro de Málaga, Malaga, Spain
Interests: plant genomics; plant biology; plant molecular biology; fruit quality; fruit ripening; strawberry

Special Issue Information

Dear Colleagues,

The ripening and abscission of fleshy fruit are key physiological processes that enable mature seeds to be released and disseminated from parent plants. Fruit ripening has attracted increasing attention in plant physiology in recent decades due to the importance of the process in human nutrition. In agriculture, knowledge of the mechanisms involved in fruit ripening and abscission is essential for developing strategies to regulate yield and fruit quality. Fruit quality and the ripening process are determined by the coordinated actions of several polygenic components that are often influenced by environmental conditions. A variety of genotype x environment interactions must be considered when breeding for overall improvements in yield and quality. This forthcoming Special Issue aims to provide a snapshot of cutting-edge genetic, molecular, and biochemical research in fruit ripening and abscission in model and nonmodel plant species. The Special Issue will serve as a platform to explore the potential application of genome-editing, transcriptomic, proteomic, and metabolic approaches in fruit quality research. It is intended to foment discussion of leading hypotheses and novel ideas in an effort to improve our understanding or resolve the still puzzling determinants of these vital processes.

Dr. Maria-Carmen Gomez-Jimenez
Dr. Brian Jones 
Dr. Iraida Amaya  
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

  • Fruit quality
  • Fruit ripening
  • Fruit abscission
  • Fruit physiology
  • Genomics
  • Transcriptomics
  • Metabolomics
  • Genome editing

Published Papers (3 papers)

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Research

18 pages, 3178 KiB  
Article
A Non-Shedding Fruit Elaeis oleifera Palm Reveals Perturbations to Hormone Signaling, ROS Homeostasis, and Hemicellulose Metabolism
by Fabienne Morcillo, Julien Serret, Antoine Beckers, Myriam Collin, Sebastien Tisné, Simon George, Roberto Poveda, Claude Louise and Timothy John Tranbarger
Genes 2021, 12(11), 1724; https://doi.org/10.3390/genes12111724 - 28 Oct 2021
Cited by 1 | Viewed by 2317
Abstract
The developmentally programmed loss of a plant organ is called abscission. This process is characterized by the ultimate separation of adjacent cells in the abscission zone (AZ). The discovery of an American oil palm (Elaeis oleifera) variant that does not shed [...] Read more.
The developmentally programmed loss of a plant organ is called abscission. This process is characterized by the ultimate separation of adjacent cells in the abscission zone (AZ). The discovery of an American oil palm (Elaeis oleifera) variant that does not shed its has allowed for the study of the mechanisms of ripe fruit abscission in this species. A comparative transcriptome analysis was performed to compare the fruit AZs of the non-shedding E. oleifera variant to an individual of the same progeny that sheds its ripe fruit normally. The study provides evidence for widespread perturbation to gene expression in the AZ of the non-shedding variant, compared to the normal fruit-shedding control, and offers insight into abscission-related functions. Beyond the genes with known or suspected roles during organ abscission or indehiscence that were identified, a list of genes with hormone-related functions, including ethylene, jasmonic acid, abscisic acid, cytokinin and salicylic acid, in addition to reactive oxygen species (ROS) metabolism, transcriptional responses and signaling pathways, was compiled. The results also allowed a comparison between the ripe fruit abscission processes of the African and American oil palm species at the molecular level and revealed commonalities with environmental stress pathways. Full article
(This article belongs to the Special Issue Genetic Basis and Physiology of Fruit Ripening and Abscission)
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18 pages, 2174 KiB  
Article
Regulation of Fruit Growth in a Peach Slow Ripening Phenotype
by Silvia Farinati, Cristian Forestan, Monica Canton, Giulio Galla, Claudio Bonghi and Serena Varotto
Genes 2021, 12(4), 482; https://doi.org/10.3390/genes12040482 - 26 Mar 2021
Cited by 9 | Viewed by 2425
Abstract
Consumers’ choices are mainly based on fruit external characteristics such as the final size, weight, and shape. The majority of edible fruit are by tree fruit species, among which peach is the genomic and genetic reference for Prunus. In this research, we used [...] Read more.
Consumers’ choices are mainly based on fruit external characteristics such as the final size, weight, and shape. The majority of edible fruit are by tree fruit species, among which peach is the genomic and genetic reference for Prunus. In this research, we used a peach with a slow ripening (SR) phenotype, identified in the Fantasia (FAN) nectarine, associated with misregulation of genes involved in mesocarp identity and showing a reduction of final fruit size. By investigating the ploidy level, we observed a progressive increase in endoreduplication in mesocarp, which occurred in the late phases of FAN fruit development, but not in SR fruit. During fruit growth, we also detected that genes involved in endoreduplication were differentially modulated in FAN compared to SR. The differential transcriptional outputs were consistent with different chromatin states at loci of endoreduplication genes. The impaired expression of genes controlling cell cycle and endocycle as well as those claimed to play a role in fruit tissue identity result in the small final size of SR fruit. Full article
(This article belongs to the Special Issue Genetic Basis and Physiology of Fruit Ripening and Abscission)
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21 pages, 7042 KiB  
Article
Characterization of Two Ethephon-Induced IDA-Like Genes from Mango, and Elucidation of Their Involvement in Regulating Organ Abscission
by Avinash Chandra Rai, Eyal Halon, Hanita Zemach, Tali Zviran, Isaac Sisai, Sonia Philosoph-Hadas, Shimon Meir, Yuval Cohen and Vered Irihimovitch
Genes 2021, 12(3), 439; https://doi.org/10.3390/genes12030439 - 19 Mar 2021
Cited by 10 | Viewed by 2867
Abstract
In mango (Mangifera indica L.), fruitlet abscission limits productivity. The INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) peptide acts as a key component controlling abscission events in Arabidopsis. IDA-like peptides may assume similar roles in fruit trees. In this study, we isolated two mango [...] Read more.
In mango (Mangifera indica L.), fruitlet abscission limits productivity. The INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) peptide acts as a key component controlling abscission events in Arabidopsis. IDA-like peptides may assume similar roles in fruit trees. In this study, we isolated two mango IDA-like encoding-genes, MiIDA1 and MiIDA2. We used mango fruitlet-bearing explants and fruitlet-bearing trees, in which fruitlets abscission was induced using ethephon. We monitored the expression profiles of the two MiIDA-like genes in control and treated fruitlet abscission zones (AZs). In both systems, qRT-PCR showed that, within 24 h, both MiIDA-like genes were induced by ethephon, and that changes in their expression profiles were associated with upregulation of different ethylene signaling-related and cell-wall modifying genes. Furthermore, ectopic expression of both genes in Arabidopsis promoted floral-organ abscission, and was accompanied by an early increase in the cytosolic pH of floral AZ cells—a phenomenon known to be linked with abscission, and by activation of cell separation in vestigial AZs. Finally, overexpression of both genes in an Atida mutant restored its abscission ability. Our results suggest roles for MiIDA1 and MiIDA2 in affecting mango fruitlet abscission. Based on our results, we propose new possible modes of action for IDA-like proteins in regulating organ abscission. Full article
(This article belongs to the Special Issue Genetic Basis and Physiology of Fruit Ripening and Abscission)
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