دورية أكاديمية
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Mapping of Leaf Rust Resistance Loci in Two Kenyan Wheats and Development of Linked Markers.

التفاصيل البيبلوغرافية
العنوان: Mapping of Leaf Rust Resistance Loci in Two Kenyan Wheats and Development of Linked Markers.
المؤلفون: Singh D; Plant Breeding Institute, School of Life and Environmental Sciences, University of Sydney, Narellan, NSW 2567, Australia., Kankwatsa P; National Agricultural Research Organization, MbaZARDI, Mbarara City P.O. Box 389, Uganda., Sandhu KS; Plant Breeding Institute, School of Life and Environmental Sciences, University of Sydney, Narellan, NSW 2567, Australia., Bansal UK; Plant Breeding Institute, School of Life and Environmental Sciences, University of Sydney, Narellan, NSW 2567, Australia., Forrest KL; Agriculture Victoria, AgriBio, Centre for AgriBioscience, Bundoora, VIC 3083, Australia., Park RF; Plant Breeding Institute, School of Life and Environmental Sciences, University of Sydney, Narellan, NSW 2567, Australia.
المصدر: Genes [Genes (Basel)] 2024 May 03; Vol. 15 (5). Date of Electronic Publication: 2024 May 03.
نوع المنشور: Journal Article; Research Support, Non-U.S. Gov't
اللغة: English
بيانات الدورية: Publisher: MDPI Country of Publication: Switzerland NLM ID: 101551097 Publication Model: Electronic Cited Medium: Internet ISSN: 2073-4425 (Electronic) Linking ISSN: 20734425 NLM ISO Abbreviation: Genes (Basel) Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Basel : MDPI
مواضيع طبية MeSH: Triticum*/genetics , Triticum*/microbiology , Triticum*/growth & development , Disease Resistance*/genetics , Plant Diseases*/microbiology , Plant Diseases*/genetics , Plant Diseases*/immunology , Quantitative Trait Loci* , Puccinia*/pathogenicity, Kenya ; Genetic Markers ; Chromosome Mapping ; Basidiomycota/pathogenicity ; Genotype ; Chromosomes, Plant/genetics
مستخلص: Leaf rust caused by the pathogen Puccinia triticina ( Pt ) is a destructive fungal disease of wheat that occurs in almost all wheat-growing areas across the globe. Genetic resistance has proven to be the best solution to mitigate the disease. Wheat breeders are continuously seeking new diversified and durable sources of resistance to use in developing new varieties. We developed recombinant inbred line (RIL) populations from two leaf rust-resistant genotypes (Kenya Kudu and AUS12568) introduced from Kenya to identify and characterize resistance to Pt and to develop markers linked closely to the resistance that was found. Our studies detected four QTL conferring adult plant resistance (APR) to leaf rust. Two of these loci are associated with known genes, Lr46 and Lr68 , residing on chromosomes 1B and 7B, respectively. The remaining two, QLrKK_2B and QLrAus12568_5A , contributed by Kenya Kudu and AUS12568 respectively, are putatively new loci for Pt resistance. Both QLrKK_2B and QLrAus12568_5A were found to interact additively with Lr46 in significantly reducing the disease severity at adult plant growth stages in the field. We further developed a suite of six closely linked markers within the QLrAus12568_5A locus and four within the QLrKK_2B region. Among these, markers sunKASP_522 and sunKASP_524 , flanking QLrAus12568_5A , and sunKASP_536 , distal to QLrKK_2B , were identified as the most closely linked and reliable for marker-assisted selection. The markers were validated on a selection of 64 Australian wheat varieties and found to be polymorphic and robust, allowing for clear allelic discrimination. The identified new loci and linked molecular markers will enable rapid adoption by breeders in developing wheat varieties carrying diversified and durable resistance to leaf rust.
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معلومات مُعتمدة: 9176057 GRDC
فهرسة مساهمة: Keywords: KASP markers; Puccinia triticina; breeding; leaf rust; mapping; resistance; wheat (Triticum aestivum)
المشرفين على المادة: 0 (Genetic Markers)
SCR Organism: Puccinia triticina
تواريخ الأحداث: Date Created: 20240525 Date Completed: 20240525 Latest Revision: 20240610
رمز التحديث: 20240611
مُعرف محوري في PubMed: PMC11121149
DOI: 10.3390/genes15050583
PMID: 38790212
قاعدة البيانات: MEDLINE
الوصف
تدمد:2073-4425
DOI:10.3390/genes15050583