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Response of Tomato Genotypes to High Temperature
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Response of Tomato Genotypes to High Temperature

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Genetics, Genomics and Biotechnology".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 10199

Special Issue Editors

Prof. Dr. Amalia Barone

E-Mail Website
Guest Editor
Department of Agricultural Sciences, University of Naples Federico II, Via Università 100, 80055 Naples, Italy
Interests: tomato; fruit quality traits; genetics; genomics; molecular breeding
Special Issues, Collections and Topics in MDPI journals
Dr. Frederic Delmas

E-Mail Website
Guest Editor
Univ. Bordeaux, INRAE, Fruit Biology and Pathology, UMR 1332, F-33140 Villenave d’Ornon, France
Interests: Plant Biology and Biotechnology; Plant Development Biology; Abiotic stresses

Special Issue Information

Dear Colleagues,

Currently, human society is facing issues resulting from two major challenges: the growth in world population and global climate changes. Among the various climate factors, drought and heat result in great impact on human life through the worrying reduction in yield they cause to economically important crops. In recent years, a constant and intense increase in air temperatures has been recorded all over the world that causes, among different environmental threats, heat stress with irreversible damage leading to the death of plants. In the case of crops, high temperatures promote yield reduction and inhibit the most sensitive physiological processes, such as photosynthesis and sexual reproduction. Many studies up to now have shed light on some physiological, cellular, and molecular aspects that determine the responses of plants to heat stress depending on heat intensity and duration. These studies suggest the potential roles of several actors involved in the response to heat stress and the high complexity of this response, but many aspects regarding the role of specific actors and their interactions are yet to be elucidated. In addition, there has not yet been definitive mining of thermotolerant genotypes to obtain new varieties that display yield stability at suboptimal temperature conditions.

In the proposed Special Issue, we will showcase tomato as the model crop for elucidating all the different factors that contribute to determining the heat stress response in plants as well as to investigate the most promising mechanisms of thermotolerance that could promote the maintenance of high yield while ensuring good fruit quality. This topic should be addressed through a broad range of perspectives so as to cover all aspects concerning its complexity and, therefore, we will open up a scientific discussion on the response of tomato genotypes to heat, which will focus on multidisciplinary studies regarding tomato adaptation to high temperatures and ranging from basic molecular biology to new breeding strategies and genotypes selection. Original research papers, methods, reviews, and perspectives are welcome.

Prof. Dr. Amalia Barone
Dr. Frederic Delmas
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

  • Breeding
  • Genetic engineering
  • Genetic resources
  • Genomics
  • Heat stress
  • Heat-induced genes/proteins
  • High temperatures
  • Metabolomics
  • Proteomics
  • Thermotolerance
  • Tomato
  • Transcriptomics

Published Papers (4 papers)

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Research

24 pages, 1333 KiB  
Article
Genetic Control of Reproductive Traits under Different Temperature Regimes in Inbred Line Populations Derived from Crosses between S. pimpinellifolium and S. lycopersicum Accessions
by Maria Jose Gonzalo, Luciano Carlos da Maia, Inmaculada Nájera, Carlos Baixauli, Giovanni Giuliano, Paola Ferrante, Antonio Granell, Maria Jose Asins and Antonio Jose Monforte
Plants 2022, 11(8), 1069; https://doi.org/10.3390/plants11081069 - 14 Apr 2022
Cited by 4 | Viewed by 1891
Abstract
In the present work, we study the genetic control of reproductive traits under different heat stress conditions in two populations of inbred lines derived from crosses between two S. pimpinellifolium accessions and two tomato cultivars (E9×L5 and E6203×LA1589). The temperature increase affected the [...] Read more.
In the present work, we study the genetic control of reproductive traits under different heat stress conditions in two populations of inbred lines derived from crosses between two S. pimpinellifolium accessions and two tomato cultivars (E9×L5 and E6203×LA1589). The temperature increase affected the reproductive traits, especially at extremely high temperatures, where only a few lines were able to set fruits. Even though a relative modest number of QTLs was identified, two clusters of QTLs involved in the responses of reproductive traits to heat stress were detected in both populations on chromosomes 1 and 2. Interestingly, several epistatic interactions were detected in the E9×L5 population, which were classified into three classes based on the allelic interaction: dominant (one locus suppressed the allelic effects of a second locus), co-adaptive (the double-homozygous alleles from the same parent alleles showed a higher phenotypic value than the combination of homozygous alleles from alternative parents) and transgressive (the combination of double-homozygous alleles from different parents showed better performance than double-homozygous alleles from the same parents). These results reinforce the important role of non-additive genetic variance in the response to heat stress and the potential of the new allelic combinations that arise after wide crosses. Full article
(This article belongs to the Special Issue Response of Tomato Genotypes to High Temperature)
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14 pages, 1816 KiB  
Article
Dynamics of Fertility-Related Traits in Tomato Landraces under Mild and Severe Heat Stress
by Barbara Farinon, Maurizio E. Picarella and Andrea Mazzucato
Plants 2022, 11(7), 881; https://doi.org/10.3390/plants11070881 - 25 Mar 2022
Cited by 2 | Viewed by 1697
Abstract
Studies on the reproductive dynamics under heat stress are crucial to breed more tolerant cultivars. In tomato, cultivars, breeding lines, and wild species have been evaluated for their response to heat stress. Here, we addressed the study to a panel of selected landraces [...] Read more.
Studies on the reproductive dynamics under heat stress are crucial to breed more tolerant cultivars. In tomato, cultivars, breeding lines, and wild species have been evaluated for their response to heat stress. Here, we addressed the study to a panel of selected landraces representing traditional genotypes that usually show high adaptation to local environments. In two experiments, spaced by 12 years, we set-up an identical experimental design with plants transplanted at two different dates to expose the second field to thermic stress with natural fluctuations. Such a strategy resulted in both a mild and severe stress in the two years. The landraces showed wide variation for both vegetative and reproductive traits; all traits were affected by heat, mostly with a significant Genotype*Environment interaction. A high broad-sense heritability was estimated for plant height, stigma position, pollen viability, and fruit weight. Low heritability estimates were found for the number of flowers, fruit set, and yield. Despite the interaction, traits recorded under control and heat conditions were positively correlated. Multivariate analysis located the genotypes in a topography that was stable under all conditions, except under the harshest temperatures. The study revealed that landraces present a wide variability for the response of reproductive traits to thermic challenges and that such a variation could be useful to dissect the traits with higher heritability and identify quantitative trait loci for breeding more resilient varieties. Full article
(This article belongs to the Special Issue Response of Tomato Genotypes to High Temperature)
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18 pages, 2857 KiB  
Article
Effect of Elevated Temperature on Tomato Post-Harvest Properties
by Vera Thole, Philippe Vain and Cathie Martin
Plants 2021, 10(11), 2359; https://doi.org/10.3390/plants10112359 - 1 Nov 2021
Cited by 8 | Viewed by 3434
Abstract
The fleshy fruit of tomato (Solanum lycopersicum) is a commodity used worldwide as a fresh or processed product. Like many crops, tomato plants and harvested fruits are susceptible to the onset of climate change. Temperature plays a key role in tomato [...] Read more.
The fleshy fruit of tomato (Solanum lycopersicum) is a commodity used worldwide as a fresh or processed product. Like many crops, tomato plants and harvested fruits are susceptible to the onset of climate change. Temperature plays a key role in tomato fruit production and ripening, including softening, development of fruit colour, flavour and aroma. The combination of climate change and the drive to reduce carbon emission and energy consumption is likely to affect tomato post-harvest storage conditions. In this study, we investigated the effect of an elevated storage temperature on tomato shelf life and fungal susceptibility. A collection of 41 genotypes with low and high field performance at elevated temperature, including different growth, fruit and market types, was used to assess post-harvest performances. A temperature increase from 18–20 °C to 26 °C reduced average shelf life of fruit by 4 days ± 1 day and increased fungal susceptibility by 11% ± 5% across all genotypes. We identified tomato varieties that exhibit both favourable post-harvest fruit quality and high field performance at elevated temperature. This work contributes to efforts to enhance crop resilience by selecting for thermotolerance combined with traits suitable to maintain and improve fruit quality, shelf life and pathogen susceptibility under changing climate conditions. Full article
(This article belongs to the Special Issue Response of Tomato Genotypes to High Temperature)
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17 pages, 1636 KiB  
Article
Accelerating the Development of Heat Tolerant Tomato Hybrids through a Multi-Traits Evaluation of Parental Lines Combining Phenotypic and Genotypic Analysis
by Fabrizio Olivieri, Salvatore Graci, Silvana Francesca, Maria Manuela Rigano and Amalia Barone
Plants 2021, 10(10), 2168; https://doi.org/10.3390/plants10102168 - 13 Oct 2021
Cited by 4 | Viewed by 1967
Abstract
The constitution of heat tolerant F1 hybrids is a challenge to ensure high yield and good fruit quality in the global climate. In the present work, we evaluated 15 genotypes for yield-related traits highly affected by high temperatures (HT). This phenotypic analysis [...] Read more.
The constitution of heat tolerant F1 hybrids is a challenge to ensure high yield and good fruit quality in the global climate. In the present work, we evaluated 15 genotypes for yield-related traits highly affected by high temperatures (HT). This phenotypic analysis allowed to identify four parental genotypes showing promising yield performances under HT conditions. Two of these genotypes also exhibited good fruit quality traits. A molecular marker analysis was carried out for six resistance genes to pathogens mostly affecting tomatoes. This analysis evidenced the presence of a maximum of three resistant alleles in parental genotypes. Exploring single nucleotide polymorphisms (SNPs) revealed by two high-throughput genotyping platforms allowed identifying additional 12 genes potentially involved in resistance to biotic stress, to be further investigated. Following these considerations, 13 F1 hybrids were constituted combining the parental genotypes and then evaluated for multiple traits under HT conditions. By estimating a hybrid index based on yield performances, desirable quality and resistance gene, we identified seven hybrids showing the best performances. The promising results obtained in the present work should be confirmed by evaluating the best hybrids selected for additional years and environments before proposing them as novel commercial hybrids that could maintain high performances under HT conditions. Full article
(This article belongs to the Special Issue Response of Tomato Genotypes to High Temperature)
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