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Plants
Special Issues
Genetics and Mapping of Plant Disease Resistance
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Genetics and Mapping of Plant Disease Resistance

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 July 2022) | Viewed by 2999

Special Issue Editors

Dr. Ana Pérez de Castro

E-Mail Website
Guest Editor
Instituto de Conservación y Mejora de la Agrodiversidad Valenciana (COMAV), Departamento de Biotecnología, Universitat Politècnica de València, Camino de Vera, 46022 Valencia, Spain
Interests: plant breeding; genetics; resistance; plant pathology; plant viruses
Dr. Mª Luisa Gómez-Guillamón Arrabal

E-Mail Website
Guest Editor
Instituto de Hortofruticultura Subtropical y Mediterránea ‘La Mayora’ (IHSM, UMA-CSIC), Mediterranea La, 29750 Malaga, Spain
Interests: genetics; plant breeding; cucurbits; resistance to powdery mildew; viruses transmitted by insects and pests

Special Issue Information

Dear Colleagues,

The use of resistant plant varieties is among the most efficient, environmentally friendly approaches to controlling losses caused by biotic stresses. Once a resistance source is available, the analysis of the genetic control and mapping of the genomic regions associated with the resistance provide essential information. On one hand, molecular markers can be implemented for their use in breeding programs for the introgression of this resistance in commercial genetic backgrounds. On the other hand, fine mapping allows the identification of candidate genes responsible for the resistance.

This Special Issue will deal with the different aspects involved in this entire process, from the identification of the genetic control to the determination of candidate genes in different plant species and against a variety of biotic stresses.

You are invited to submit research articles, review articles, as well as short communications covering these research areas for this Special Issue.

Dr. Ana Pérez de Castro
Dr. Mª Luisa Gómez-Guillamón Arrabal
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

  • resistance
  • biotic stress
  • virus
  • fungus
  • bacteria
  • insect
  • nematodes
  • genetic control
  • mapping

Published Papers (1 paper)

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Research

12 pages, 1072 KiB  
Article
A Novel QTL for Resistance to Phytophthora Crown Rot in Squash
by Vincent Njung’e Michael, Yuqing Fu, Swati Shrestha and Geoffrey Meru
Plants 2021, 10(10), 2115; https://doi.org/10.3390/plants10102115 - 6 Oct 2021
Cited by 3 | Viewed by 2137
Abstract
Phytophthora capsici Leonian causes significant yield losses in commercial squash (Cucurbita pepo) production worldwide. The deployment of resistant cultivars can complement integrated management practices for P. capsici, but resistant cultivars are currently unavailable for growers. Moderate resistance to Phytophthora crown [...] Read more.
Phytophthora capsici Leonian causes significant yield losses in commercial squash (Cucurbita pepo) production worldwide. The deployment of resistant cultivars can complement integrated management practices for P. capsici, but resistant cultivars are currently unavailable for growers. Moderate resistance to Phytophthora crown rot in a selection of accession PI 181761 (C. pepo) (designated line #181761-36P) is controlled by three dominant genes (R4, R5 and R6). Introgression of these loci into elite germplasm through marker-assisted selection (MAS) can accelerate the release of new C. pepo cultivars resistant to crown rot, but these tools are currently unavailable. Here we describe the identification of a quantitative trait locus (QTL), molecular markers and candidate genes associated with crown rot resistance in #181761-36P. Five hundred and twenty-three SNP markers were genotyped in an F2 (n = 83) population derived from a cross between #181761-36P (R) and Table Queen (S) using targeted genotyping by sequencing. A linkage map (2068.96 cM) consisting of twenty-one linkage groups and an average density of 8.1 markers/cM was developed for the F2 population. The F2:3 families were phenotyped in the greenhouse with a virulent strain of P. capsica, using the spore-spray method. A single QTL (QtlPC-C13) was consistently detected on LG 13 (chromosome 13) across three experiments and explained 17.92–21.47% of phenotypic variation observed in the population. Nine candidate disease resistance gene homologs were found within the confidence interval of QtlPC-C13. Single nucleotide polymorphism (SNP) markers within these genes were converted into Kompetitive Allele Specific PCR (KASP) assays and tested for association with resistance in the F2 population. One SNP marker (C002686) was significantly associated with resistance to crown rot in the F2 population (p < 0.05). This marker is a potential target for MAS for crown rot resistance in C. pepo. Full article
(This article belongs to the Special Issue Genetics and Mapping of Plant Disease Resistance)
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