scholarly journals Identification and Mapping of Adult Plant Resistance Loci to Leaf Rust and Stripe Rust in Common Wheat Cultivar Kundan

Plant Disease ◽  
2017 ◽  
Vol 101 (3) ◽  
pp. 456-463 ◽  
Author(s):  
Y. Ren ◽  
R. P. Singh ◽  
B. R. Basnet ◽  
C. X. Lan ◽  
J. Huerta-Espino ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Stripe Rust ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Average Distance ◽  
Recombinant Inbred Lines ◽  
Interval Mapping ◽  
Snp Markers ◽  
Adult Plant ◽  
Additive Interaction

Leaf rust (LR) and stripe rust (YR) are important diseases of wheat worldwide. We used 148 recombinant inbred lines (RIL) from the cross of Avocet × Kundan for determining and mapping the genetic basis of adult plant resistance (APR) loci. The population was phenotyped LR and YR for three seasons in field trials conducted in Mexico and genotyped with the diversity arrays technology sequencing (DArT-Seq) and simple sequence repeat markers. The final genetic map was constructed using 2,937 polymorphic markers with an average distance of 1.29 centimorgans between markers. Inclusive composite interval mapping identified two co-located APR quantitative trait loci (QTL) for LR and YR, two LR QTL, and three YR QTL. The co-located resistance QTL on chromosome 1BL corresponded to the pleiotropic APR gene Lr46/Yr29. QLr.cim-2BL, QYr.cim-2AL, and QYr.cim-5AS could be identified as new resistance loci in this population. Lr46/Yr29 contributed 49.5 to 65.1 and 49.2 to 66.1% of LR and YR variations, respectively. The additive interaction between detected QTL showed that LR severities for RIL combining four QTL ranged between 5.3 and 25.8%, whereas the lowest YR severities were for RIL carrying QTL on chromosomes 1BL + 2AL + 6AL. The high-density DArT-Seq markers across chromosomes can be used in fine mapping of the targeted loci and development SNP markers.

Molecular Mapping of a Novel QTL Conferring Adult Plant Resistance to Stripe Rust in Chinese Wheat Landrace ‘Guangtoumai’

Plant Disease ◽  
2020 ◽  
Author(s):  
Yu Wu ◽  
Yuqi Wang ◽  
Fangjie Yao ◽  
Li Long ◽  
Jing Li ◽  
...  
Keyword(s):  
Stripe Rust ◽  
Plant Resistance ◽  
Rust Resistance ◽  
Adult Plant Resistance ◽  
Snp Markers ◽  
Stripe Rust Resistance ◽  
Adult Plant ◽  
Major Locus ◽  
Dcaps Marker ◽  
Chinese Wheat

Stripe rust (yellow rust), caused by Puccinia striiformis f. sp. tritici (Pst), is one of the most destructive diseases of wheat in the world. Chinese wheat landrace ‘Guangtoumai’ (GTM) exhibited a high-level resistance against predominant Pst races in China at the adult-plant stage. The objective of this research was to identify and map the major locus/loci for stripe rust resistance in GTM. A set of 212 recombinant inbred lines (RILs) was developed from a cross between GTM and Avocet S (AvS). The parents and RILs were evaluated in three field tests (2018, 2019, and 2020 at Chongzhou, Sichuan) with the currently predominant Pst races for final disease severity (FDS) and genotyped with the Wheat 55K SNP array to construct a genetic map with 1,031 SNP markers. A major locus, named QYr.GTM-5DL, was detected on chromosome 5DL in GTM. The locus was mapped in a 2.75 cM interval flanked by SNP markers AX-109855976 and AX-109453419, explaining up to 44.4% of the total phenotypic variation. Since no known Yr genes have been reported on chromosome 5DL, QYr.GTM-5DL is very likely a novel adult plant resistance (APR) locus. Haplotype analysis revealed that the resistance allele displayed enhanced levels of stripe rust resistance and is likely present in 5.3% of the 247 surveyed Chinese wheat landraces. The derived cleaved amplified polymorphic sequence (dCAPS) marker dCAPS-5722, converted from a SNP marker tightly linked to QYr.GTM-5DL with 0.3 cM, was validated on a subset of RILs and 48 commercial wheat cultivars developed in Sichuan. The results indicated that QYr.GTM-5DL with its linked dCAPS marker could be used in marker-assisted selection to improve stripe rust resistance in breeding programs, and this QTL will provide new and possibly durable resistance to stripe rust.

Seedling resistances to rust diseases in international triticale germplasm

2010 ◽  
Vol 61 (12) ◽  
pp. 1036 ◽  
Author(s):  
J. Zhang ◽  
C. R. Wellings ◽  
R. A. McIntosh ◽  
R. F. Park
Keyword(s):  
Leaf Rust ◽  
Stripe Rust ◽  
Plant Resistance ◽  
Stem Rust ◽  
Rust Resistance ◽  
Adult Plant Resistance ◽  
Stem Rust Resistance ◽  
Adult Plant ◽  
Seedling Resistance ◽  
Rust Diseases

Seedling resistances to stem rust, leaf rust and stripe rust were evaluated in the 37th International Triticale Screening Nursery, distributed by the International Wheat and Maize Improvement Centre (CIMMYT) in 2005. In stem rust tests, 12 and 69 of a total of 81 entries were postulated to carry Sr27 and SrSatu, respectively. When compared with previous studies of CIMMYT triticale nurseries distributed from 1980 to 1986 and 1991 to 1993, the results suggest a lack of expansion in the diversity of stem rust resistance. A total of 62 of 64 entries were resistant to five leaf rust pathotypes. In stripe rust tests, ~93% of the lines were postulated to carry Yr9 alone or in combination with other genes. The absence of Lr26 in these entries indicated that Yr9 and Lr26 are not genetically associated in triticale. A high proportion of nursery entries (63%) were postulated to carry an uncharacterised gene, YrJackie. The 13 lines resistant to stripe rust and the 62 entries resistant to leaf rust represent potentially useful sources of seedling resistance in developing new triticale cultivars. Field rust tests are needed to verify if seedling susceptible entries also carry adult plant resistance.

An introgression on wheat chromosome 4DL in RL6077 (Thatcher*6/PI 250413) confers adult plant resistance to stripe rust and leaf rust (Lr67)

2010 ◽  
Vol 121 (6) ◽  
pp. 1083-1091 ◽  
Author(s):  
Colin W. Hiebert ◽  
Julian B. Thomas ◽  
Brent D. McCallum ◽  
D. Gavin Humphreys ◽  
Ronald M. DePauw ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Stripe Rust ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Wheat Chromosome ◽  
Adult Plant

Characterization of Adult Plant Resistance to Leaf Rust and Stripe Rust in Indian Wheat Cultivar ‘New Pusa 876’

Crop Science ◽  
2018 ◽  
Vol 58 (2) ◽  
pp. 630-638 ◽  
Author(s):  
Luis J. Ponce‐Molina ◽  
Julio Huerta‐Espino ◽  
Ravi P. Singh ◽  
Bhoja R. Basnet ◽  
Evans Lagudah ◽  
...  
Keyword(s):  
Leaf Rust ◽  
Stripe Rust ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Wheat Cultivar ◽  
Adult Plant

scholarly journals QTL Mapping for Adult Plant Resistance to Stripe Rust in Wheat line "Guixie 3"

2021 ◽  
Author(s):  
Bin CHENG ◽  
Xu GAO ◽  
Ning CAO ◽  
Yanqing DING ◽  
Tianqing CHEN ◽  
...  
Keyword(s):  
Stripe Rust ◽  
Plant Resistance ◽  
Adult Plant Resistance ◽  
Recombinant Inbred Lines ◽  
Genetic Resistance ◽  
Wheat Breeding ◽  
Stripe Rust Resistance ◽  
Adult Plant ◽  
Phenotypic Data ◽  
Multiple Field

Abstract Development of cultivars with multiple resistances has proven to be an effective way to prevent diseases in wheat breeding. The Guixie 3 variety (GX3) has shown excellent performance in resistance to stripe rust in field for many years. The purpose of this study was to detect quantitative trait loci (QTL) associated with resistance to stripe rust in the adult plant stage and determine closely linked molecular markers. A population of recombinant inbred lines (n=228) was derived from a cross between the susceptible landrace Mian 96-5 (M96-5) and GX3 variety and evaluated in multiple field studies to elucidate genetic resistance by identifying QTL specifically for stripe rust resistance. A total of 19 QTL located on 12 chromosomes showed resistance to wheat stripe rust when studying phenotypic data from multiple field tests over the course of six years. These chromosomes included 1B (2), 1D (2), 2A (2), 2B (2), 2D (1), 4B (2), 4D (1), 5A (3), 5B (1), 6A (1), 6B (1), and 7B (1). Two stable QTL on chromosomes 2AS (Qyr.gaas.2AS) and 6AS (Qyr.gaas.6AS) were detected in six and five different environments, respectively; both QTL were derived from the GX3 variety. Qyr.gaas.2AS was found to be crucial for increasing adult plant resistance, which may explain the large phenotypic variation of 45.52%. Our results provide theoretical and molecular insight for wheat breeding and suggest the cloning of genes associated with the GX3 variety may be beneficial in future studies.

scholarly journals Genetic Analysis of Resistance to Leaf Rust and Stripe Rust in Wheat Cultivar Francolin#1

Plant Disease ◽  
2014 ◽  
Vol 98 (9) ◽  
pp. 1227-1234 ◽  
Author(s):  
C. X. Lan ◽  
R. P. Singh ◽  
J. Huerta-Espino ◽  
V. Calvo-Salazar ◽  
S. A. Herrera-Foessel
Keyword(s):  
Leaf Rust ◽  
Stripe Rust ◽  
Genetic Basis ◽  
Adult Plant Resistance ◽  
Recombinant Inbred Lines ◽  
Adult Plant ◽  
Seedling Resistance ◽  
Resistant Varieties ◽  
Rust Severity ◽  
Additive Genes

Leaf rust and stripe rust are important diseases of wheat and can be controlled by growing resistant varieties. We investigated the genetic basis of resistance to both rusts in 198 F5 recombinant inbred lines derived from a cross between ‘Avocet’ and ‘Francolin#1’. The population was phenotyped in greenhouse and field, and genotyped with known gene-associated molecular markers. Seedling resistance of Francolin#1 to leaf and stripe rusts was attributed to the loosely linked genes Lr16 and YrF, respectively, with a recombination frequency of 0.36. Field segregation indicated that adult plant resistance (APR) to leaf and stripe rusts was conferred by three and five additive genes, respectively. Among them, Lr46/Yr29 was associated with resistance to both rusts in Francolin#1, Lr16 reduced field leaf rust severity by 8 to 9%, and YrF contributed to 10 to 25% reductions in stripe rust severity. The Lr16 region was also associated with a 5 to 16% reduction in stripe rust severity, which is likely due to its linkage with YrF or another unidentified stripe rust APR gene. Significant additive effects on stripe rust were detected between YrF and Yr29. We conclude that APR in Francolin#1 to leaf and stripe rusts involves a combination of seedling and APR genes.

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