Genetics and Breeding for Plant Disease Resistance

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

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 3080

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Department of Horticultural Science, North Carolina State University, Mountain Horticultural Crops Research, and Extension Center, Mills River, NC 28759, USA
Interests: breeding and development of tomato lines and varieties with broad adaptation, resistance to major diseases, high yield and fruit quality for fresh market by using conventional and molecular approaches; Investigation of genetic control and inheritance of important traits to facilitate the selection process
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Special Issue Information

Dear Colleagues,

Resistance breeding has been an important aspect of crop improvement since the beginning of breeding efforts in plants. Developing disease-resistant varieties is one of the breeding objectives of almost all breeding programs throughout the world. It is because it has a direct implication in growers’ economy, and it impacts the environment by growing resistant crop varieties and reducing the use of pesticides. Plant breeders used to make use of genetic resources by conventional methods in the past. With the availability of whole-genome sequences of several economically important crops, it is possible to find the information of gene(s) and quantitative trait loci (QTL) conferring disease resistance more precisely. With the advent of new tools such as genome editing, these genes can be manipulated even more easily than before. For minor genes, genomic selection can be employed to increase the genetic gain. These aspects need to be investigated in detail in various crop plants including cereals and vegetables. This special issue of Plants is being published to cover those stories from various researches throughout the world. 

Dr. Dilip Panthee
Guest Editor

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Keywords

  • genetic transformation
  • genetics
  • genome editing
  • genomic selection
  • genomics
  • GWAS
  • phenomics
  • plant breeding
  • QTL mapping
  • resistance breeding

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Published Papers (1 paper)

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Research

19 pages, 2057 KiB  
Article
Genome-Wide Association Study for Resistance to Tan Spot in Synthetic Hexaploid Wheat
by Nerida Lozano-Ramírez, Susanne Dreisigacker, Carolina P. Sansaloni, Xinyao He, Sergio Sandoval Islas, Paulino Pérez-Rodríguez, Aquiles Carballo Carballo, Cristian Nava-Díaz, Masahiro Kishii and Pawan K. Singh
Plants 2022, 11(3), 433; https://doi.org/10.3390/plants11030433 - 5 Feb 2022
Cited by 10 | Viewed by 2399
Abstract
Synthetic hexaploid wheat (SHW) has shown effective resistance to a diversity of diseases and insects, including tan spot, which is caused by Pyrenophora tritici-repentis, being an important foliar disease that can attack all types of wheat and several grasses. In this study, [...] Read more.
Synthetic hexaploid wheat (SHW) has shown effective resistance to a diversity of diseases and insects, including tan spot, which is caused by Pyrenophora tritici-repentis, being an important foliar disease that can attack all types of wheat and several grasses. In this study, 443 SHW plants were evaluated for their resistance to tan spot under controlled environmental conditions. Additionally, a genome-wide association study was conducted by genotyping all entries with the DArTSeq technology to identify marker-trait associations for tan spot resistance. Of the 443 SHW plants, 233 showed resistant and 183 moderately resistant reactions, and only 27 were moderately susceptible or susceptible to tan spot. Durum wheat (DW) parents of the SHW showed moderately susceptible to susceptible reactions. A total of 30 significant marker-trait associations were found on chromosomes 1B (4 markers), 1D (1 marker), 2A (1 marker), 2D (2 markers), 3A (4 markers), 3D (3 markers), 4B (1 marker), 5A (4 markers), 6A (6 markers), 6B (1 marker) and 7D (3 markers). Increased resistance in the SHW in comparison to the DW parents, along with the significant association of resistance with the A and B genome, supported the concept of activating epistasis interaction across the three wheat genomes. Candidate genes coding for F-box and cytochrome P450 proteins that play significant roles in biotic stress resistance were identified for the significant markers. The identified resistant SHW lines can be deployed in wheat breeding for tan spot resistance. Full article
(This article belongs to the Special Issue Genetics and Breeding for Plant Disease Resistance)
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