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Agronomy
Special Issues
Genetic Resources, Quality and Stress Tolerance of Cucurbitaceae Crops
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Genetic Resources, Quality and Stress Tolerance of Cucurbitaceae Crops

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Horticultural and Floricultural Crops".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 9223

Special Issue Editors

Prof. Dr. Jinfeng Chen

E-Mail Website
Guest Editor
State Key Lab for Crop Gentics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
Interests: cucumber genetic and germplasm innovation; cyto-molecular biology; biotechnology and cultivar improvement
Special Issues, Collections and Topics in MDPI journals
Dr. Xiaqing Yu

E-Mail Website
Guest Editor
Department of Horticulture, Nanjing Agricultural University, Xuanwu, Nanjing 210095, China
Interests: cucumis; abiotic stress; -omics; polyploidy; nucleocytoplasmic interaction; breeding
Dr. Biao Jiang

E-Mail Website
Co-Guest Editor
Guangdong Key Laboratory for New Technology Research of Vegetables, Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China
Interests: vegetable breeding; genomics; genetic diversity; transposable element

Special Issue Information

Dear Colleagues,

The Cucurbitaceae family, also known as the gourd family, possesses many economically important species, such as cucumber, melon, watermelon, calabash, squash, and pumpkin. Since the first sequenced vegetable genome of cucumber in 2009, the rapid development of technologies such as high-throughput sequencing is boosting the research on a number of areas in cucurbits.

The scope of this Special Issue is to bring together cutting-edge full research articles regarding the advances in scientific areas related to the genetic resources, quality, and stress tolerance of cucurbit species.

Prof. Dr. Jinfeng Chen
Dr. Xiaqing Yu
Dr. Biao Jiang
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. Agronomy 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

  • cucurbit
  • genetic resources
  • omics
  • epigenetics
  • abiotic stresses
  • pest and disease resistance
  • production and quality

Published Papers (3 papers)

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Research

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14 pages, 1479 KiB  
Article
Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings
by Jian Lyu, Li Jin, Xin Meng, Ning Jin, Shuya Wang, Linli Hu, Guobin Zhang, Yue Wu, Shilei Luo and Jihua Yu
Agronomy 2022, 12(7), 1569; https://doi.org/10.3390/agronomy12071569 - 29 Jun 2022
Cited by 2 | Viewed by 1604
Abstract
(1) Background: Cinnamic acid (CA) is a harmful substance secreted by the roots of continuous-cropping crops. (2) Methods: This study aimed to investigate how exogenous Si affects chlorophyll content and carbon metabolism in cucumber seedlings under CA-induced stress. (3) Results: The levels of [...] Read more.
(1) Background: Cinnamic acid (CA) is a harmful substance secreted by the roots of continuous-cropping crops. (2) Methods: This study aimed to investigate how exogenous Si affects chlorophyll content and carbon metabolism in cucumber seedlings under CA-induced stress. (3) Results: The levels of chlorophyll a, chlorophyll b, chlorophyll a+b, and carotenoids were significantly reduced due to CA-induced stress. The addition of exogenous Si significantly alleviated this reduction. Under CA-induced stress, exogenous Si significantly increased the activities of ribulose-1,5-bisphosphate carboxylase, glyceraldehyde-3-phosphate dehydrogenase, fructose-1,6-bisphosphatase, fructose-1,6-bisphosphate aldolase, and transketolase. CA-induced stress significantly increased the fructose, glucose, and sucrose contents and reduced the starch content in the leaves and roots of seedlings. Similarly, the sucrose phosphate synthase, sucrose synthase, acid invertase, and neutral invertase activities were significantly reduced in plants under CA-induced stress. Overall, exogenous Si significantly reduced the soluble sugar content, increased the starch content, and promoted sucrose metabolism-related enzymatic activity in seedlings. (4) Conclusion: Exogenous Si can effectively increase the content of photosynthetic pigments in leaves of seedlings and maintain the balance of osmotic potential in the plant by reducing the accumulation of carbon assimilation products, which ultimately promotes tolerance to CA-induced autotoxicity stress. Full article
(This article belongs to the Special Issue Genetic Resources, Quality and Stress Tolerance of Cucurbitaceae Crops)
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Review

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19 pages, 1218 KiB  
Review
Retrospective Genetic Analysis of Qualitative and Quantitative Traits in Sweet Watermelon (Citrullus lanatus var. lanatus): A Review
by Jacob Mashilo, Hussein Shimelis, Dorcus Maja and Richard Mantlo Ngwepe
Agronomy 2022, 12(7), 1633; https://doi.org/10.3390/agronomy12071633 - 8 Jul 2022
Cited by 1 | Viewed by 3482
Abstract
Understanding the genetic basis of a crop’s qualitative and quantitative traits is vital to designing market preferred varieties. The aim of this review is to present a retrospective genetic analysis of qualitative and quantitative phenotypic traits in sweet watermelon as a guide for [...] Read more.
Understanding the genetic basis of a crop’s qualitative and quantitative traits is vital to designing market preferred varieties. The aim of this review is to present a retrospective genetic analysis of qualitative and quantitative phenotypic traits in sweet watermelon as a guide for trait integration and the development of novel varieties with yield potential and desirable horticultural attributes. The first section outlines genes conditioning the inheritance of plant architecture (e.g., leaf attributes and plant architecture), floral characters (flowering rate, sex expression, and male sterility), fruit traits (shape, colour, rind colour and stripe patterns and flesh colour) and seed morphology (seed length, width, size and coat colour). In the second section, developments in molecular markers and quantitative trait loci (QTL) to aid marker-assisted breeding are discussed. Further, the review highlights the clustered regularly interspaced short palindromic repeats (CRISPR/Cas9) gene-editing technology and its scope in gene manipulations and new variety development. The information presented in this review is useful for optimised and demand-led breeding to develop new varieties to serve growers, consumers and the sweet watermelon industry. Full article
(This article belongs to the Special Issue Genetic Resources, Quality and Stress Tolerance of Cucurbitaceae Crops)
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16 pages, 2090 KiB  
Review
Molecular Research Progress on Xishuangbanna Cucumber (Cucumis sativus L. var. Xishuangbannesis Qi et Yuan): Current Status and Future Prospects
by Hesbon Ochieng Obel, Chunyan Cheng, Zhen Tian, Ji Li, Qunfeng Lou, Xiaqing Yu, Yuhui Wang, Joshua Otieno Ogweno and Jinfeng Chen
Agronomy 2022, 12(2), 300; https://doi.org/10.3390/agronomy12020300 - 25 Jan 2022
Cited by 1 | Viewed by 3663
Abstract
The Xishuangbanna (XIS) cucumber is an important botanical variety, accumulating high levels of β-carotene (700 μg/100 g) in the endocarp of mature fruit compared with normal green/white flesh types (25–50 μg/100 g, fresh weight). β-carotene is an essential precursor of provitamin A synthesis [...] Read more.
The Xishuangbanna (XIS) cucumber is an important botanical variety, accumulating high levels of β-carotene (700 μg/100 g) in the endocarp of mature fruit compared with normal green/white flesh types (25–50 μg/100 g, fresh weight). β-carotene is an essential precursor of provitamin A synthesis required for human health, thus XIS cucumber is an appealing germplasm for vitamin A breeding programs. In this review, we highlighted the molecular research progress of XIS cucumber as well as the bottlenecks undermining its utilization in genetic breeding. The XIS cucumber was first reported in 1983; thereafter, the literature on XIS cucumber was sporadic until 2012 and 2013 following QTL mapping of the Ore gene and subsequent cloning of the CsaBCH1 gene, respectively. Whereas QTL mapping studies underlying its flowering time and fruit quality related traits have been reported, fine mapping of their candidate genes remains unknown. Cucumber fruits are mainly consumed at fresh immature stage; however, XIS cucumber accumulates β-carotene at mature fruit state, thus limiting the utilization of β-carotene derived from it. In our opinion, we believe that the production and commercialization of immature orange-fleshed cucumber would gain wider acceptance among consumers. Additionally, we highlighted a comprehensive breeding strategy, precisely for enhanced β-carotene accumulation based on prior studies of XIS cucumber coupled with those from other crops. In MAS, we proposed schematic molecular backcross breeding strategy using lines possessing both ore and fft1.1 loci. This review, therefore, provides insights of XIS cucumber research and opportunities for further genetic breeding. Full article
(This article belongs to the Special Issue Genetic Resources, Quality and Stress Tolerance of Cucurbitaceae Crops)
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