A SSR Marker for Leaf Rust Resistance Gene Lr19 in Wheat

Li, Xing; Yang, Wenxiang; Li, Yaning; Liu, Daqun; Yan, Huihuang; Meng, Qingfang; Zhang, Ting

doi:10.1016/s1671-2927(06)60027-8

Cited by 7 publications

(7 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Knott (1984) reported a gene for b* linked to Lr19 in 'Agatha' wheat. One SSR and SRAP marker closely linked to Lr19 resistance trait were obtained, and were named wms44 and M73 on chromosome 7D with genetic distances 0.9 and 2.6 cM, respectively (Li et al 2005;Liu et al 2007a). At a similar location, additive QTLs associated with a* and L* were also detected in this study.…”

Section: Comparison Of the Present Study With Previous Researchessupporting

confidence: 69%

“…Knott (1984) reported that a gene for b* was linked to Lr19 in 'Agatha' wheat. One SSR and sequence related amplified polymorphism (SRAP) marker closely linked to a Lr19 resistance trait was obtained, and were named wms44 and M73 with genetic distances 0.9 and 2.6 cM, respectively (Li et al 2005;Liu et al 2007a). A co-dominant amplified fragment length polymorphism (AFLP) marker linked to a major locus controlling flour color in wheat has been converted to an sequence tagged sites (STS) marker for wider applicability in MAS (Parker and Langridge 2000).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Molecular genetic analysis of flour color using a doubled haploid population in bread wheat (Triticum aestivum L.)

et al. 2008

View full text Add to dashboard Cite

Flour color is an important trait in the assessment of flour quality for the production of many end products. In this study, quantitative trait loci (QTLs) with additive effects, epistatic effects, and QTL 9 environment (QE) interactions for flour color in bread wheat (Triticum aestivum L.) were studied, using a set of 168 doubled haploid (DH) lines derived from a Huapei 3 9 Yumai 57 cross. A genetic map was constructed using 283 simple sequence repeats (SSR) and 22 expressed sequence tags (EST)-SSR markers. The DH and parents were evaluated for flour color in three environments. QTL analyses were performed using QTLNetwork 2.0 software based on a mixed linear model approach. A total of 18 additive QTLs and 24 pairs of epistatic QTLs were detected for flour color, which were distributed on 19 of the 21 chromosomes. One major QTL, qa1B, closely linked to barc372 0.1 cM, could account for 25.64% of the phenotypic variation of a* without any influence from the environments. So qa1B could be used in the molecular marker-assisted selection (MAS) in wheat breeding programs. The results showed that both additive and epistatic effects were important genetic basis for flour color, and were also sometimes subject to environmental modifications. The information obtained in this study should be useful for manipulating the QTLs for flour color by MAS in wheat breeding programs.

show abstract

Section: Comparison Of the Present Study With Previous Researchessupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

Molecular genetic analysis of flour color using a doubled haploid population in bread wheat (Triticum aestivum L.)

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Resistance breeding is critical for wheat rust disease control. Nevertheless, most resistant genes used for breeding are ones with major effect, which tend to lose their resistance rapidly upon field release ( Line and Qayoum, 1992 ; Li and Zeng, 2000 ). So far, mycoparasitism has been reported as an effective measure for controlling several diseases ( Zhong et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%

Identification of a Novel Alternaria alternata Strain Able to Hyperparasitize Puccinia striiformis f. sp. tritici, the Causal Agent of Wheat Stripe Rust

et al. 2017

View full text Add to dashboard Cite

The obligate bitrophic fungus Puccinia striiformis f. sp. tritici (Pst) causes stripe (yellow) rust on wheat worldwide. Here, we report a novel fungal strain able to hyperparasitize Pst. The strain was isolated from gray-colored rust pustules, and was identified as Alternaria alternata (Fr.: Fr.) keissler based on a combination of morphological characteristics and multi-locus (ITS, GAPDH, and RPB2) phylogeny. Upon artificial inoculation, the hyperparasite reduced the production and viability of urediniospores, and produced a typical gray-colored rust pustule symptom. Scanning electron microscopy demonstrated that the strain could efficiently penetrate and colonize Pst urediniospores. This study first demonstrates that A. alternata could parasitize Pst and indicates its potential application in the biological control of wheat stripe rust disease.

show abstract

“…Many Lr genes such as Lr3, Lr12, Lr37, Lr39/41, Lr51 and Lr52 have been mapped on wheat chromosomes using SSR markers (Singh & Bowden, 2011;McIntosh et al, 2013). We have mapped several Lr genes in our previous studies including Lr19 on chromosome 7D (Li et al, 2005), Lr45 on chromosome 2A (Zhang et al, 2007), LrZH84, LrBi16 and LrXi on chromosome 1BL (Zhou et al, 2013b;Zhang et al, 2011;Li et al, 2010a), LrNJ97 on 2BL (Zhou et al, 2013a), and LrFun on chromosome 7BL (Xing et al, 2014). Several adult resistance loci have also been mapped in our previous studies (Qi et al, 2016;Zhang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of leaf rust resistance in the Chinese wheat cultivar ‘Een1’

Zhang

Zhao

Mawcha

et al. 2020

PeerJ

View full text Add to dashboard Cite

Wheat cultivar Een1, 34 near isogenic lines (NILs), and two cultivars were used as plant materials to evaluate the resistance of Een1 to leaf rust disease. Infection type identification and gene postulation were carried out by inoculation of 12 Chinese Puccinia triticina (Pt) pathotypes. Based on the unique phenotype of Een1, we speculated that Een1 might carry Lr gene(s) different from the tested ones. The chromosomal locations for resistance gene to leaf rust disease was employed using SSR primers mapping the populations derived from the cross between Een1 and susceptible Thatcher. A total of 285 plants in the F2 population were tested by inoculating Pt pathotype FHNQ during the seedling stage. Results from the segregation analysis fits a ratio of 3:1 (${\chi }_{3:1}^{2}=2.37$, P = 0.12), indicating the presence of a single dominant gene in Een1 conferring resistance to FHNQ. A total of 1,255 simple sequence repeat (SSR) primers were first used to identify the likely linked markers based on bulk segregation analysis (BSA), and then those likely linked markers were further genotyped in the F2 population for linkage analysis. Our linkage analysis found that the resistance gene (LrE1) was distal to seven SSR loci on the long arm of chromosome 7B, with distances from 2.6 cM (Xgwm344) to 27.1 cM (Xgwm131). The closest marker Xgwm344 was further verified with F3 lines.

show abstract

A SSR Marker for Leaf Rust Resistance Gene Lr19 in Wheat

Cited by 7 publications

References 12 publications

Molecular genetic analysis of flour color using a doubled haploid population in bread wheat (Triticum aestivum L.)

Molecular genetic analysis of flour color using a doubled haploid population in bread wheat (Triticum aestivum L.)

Identification of a Novel Alternaria alternata Strain Able to Hyperparasitize Puccinia striiformis f. sp. tritici, the Causal Agent of Wheat Stripe Rust

Evaluation of leaf rust resistance in the Chinese wheat cultivar ‘Een1’

Contact Info

Product

Resources

About