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Agronomy
Special Issues
Crop Powdery Mildew—Series II
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Crop Powdery Mildew—Series II

A special issue of Agronomy (ISSN 2073-4395). This special issue belongs to the section "Crop Breeding and Genetics".

Deadline for manuscript submissions: closed (1 March 2023) | Viewed by 5839

Special Issue Editor

Dr. Diego Rubiales

E-Mail Website
Guest Editor
Institute for Sustainable Agriculture, CSIC, 14004 Cordoba, Spain
Interests: disease resistance; plant breeding; cereals; legumes
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Powdery mildew causes agriculturally significant diseases on a wide range of crops. Causal agents are biotrophic Erysiphales fungi, with very efficient mechanisms of spread. A battery of control strategies have been implemented in many crops, with chemicals and resistance genes often available, but also often quickly overcome by rapid evolution of powdery mildew populations.

In this Special Issue, research articles, reviews, and opinion papers addressing powdery mildew integrated management in crops, from epidemiology, cultural, chemical or biological control, and disease resistance perspectives are all welcome.

Prof. Dr. Diego Rubiales
Guest Editor

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

  • biological control
  • chemical control
  • disease management
  • disease resistance
  • epidemiology
  • plant health
  • plant breeding
  • virulence

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Published Papers (1 paper)

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Review

36 pages, 1102 KiB  
Review
Breeding Wheat for Powdery Mildew Resistance: Genetic Resources and Methodologies—A Review
by Theresa Bapela, Hussein Shimelis, Tarekegn Terefe, Salim Bourras, Javier Sánchez-Martín, Dimitar Douchkov, Francesca Desiderio and Toi John Tsilo
Agronomy 2023, 13(4), 1173; https://doi.org/10.3390/agronomy13041173 - 20 Apr 2023
Cited by 11 | Viewed by 5292
Abstract
Powdery mildew (PM) of wheat caused by Blumeria graminis f. sp. tritici is among the most important wheat diseases, causing significant yield and quality losses in many countries worldwide. Considerable progress has been made in resistance breeding to mitigate powdery mildew. Genetic host [...] Read more.
Powdery mildew (PM) of wheat caused by Blumeria graminis f. sp. tritici is among the most important wheat diseases, causing significant yield and quality losses in many countries worldwide. Considerable progress has been made in resistance breeding to mitigate powdery mildew. Genetic host resistance employs either race-specific (qualitative) resistance, race-non-specific (quantitative), or a combination of both. Over recent decades, efforts to identify host resistance traits to powdery mildew have led to the discovery of over 240 genes and quantitative trait loci (QTLs) across all 21 wheat chromosomes. Sources of PM resistance in wheat include landraces, synthetic, cultivated, and wild species. The resistance identified in various genetic resources is transferred to the elite genetic background of a well-adapted cultivar with minimum linkage drag using advanced breeding and selection approaches. In this effort, wheat landraces have emerged as an important source of allelic and genetic diversity, which is highly valuable for developing new PM-resistant cultivars. However, most landraces have not been characterized for PM resistance, limiting their use in breeding programs. PM resistance is a polygenic trait; therefore, the degree of such resistance is mostly influenced by environmental conditions. Another challenge in breeding for PM resistance has been the lack of consistent disease pressure in multi-environment trials, which compromises phenotypic selection efficiency. It is therefore imperative to complement conventional breeding technologies with molecular breeding to improve selection efficiency. High-throughput genotyping techniques, based on chip array or sequencing, have increased the capacity to identify the genetic basis of PM resistance. However, developing PM-resistant cultivars is still challenging, and there is a need to harness the potential of new approaches to accelerate breeding progress. The main objective of this review is to describe the status of breeding for powdery mildew resistance, as well as the latest discoveries that offer novel ways to achieve durable PM resistance. Major topics discussed in the review include the genetic basis of PM resistance in wheat, available genetic resources for race-specific and adult-plant resistance to PM, important gene banks, and conventional and complimentary molecular breeding approaches, with an emphasis on marker-assisted selection (MAS). Full article
(This article belongs to the Special Issue Crop Powdery Mildew—Series II)
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