Molecular cytogenetic characterization of a new wheat–rye 4R chromosome translocation line resistant to powdery mildew

An, Diaoguo; Zheng, Qi; Zhou, Yilin; Ma, Pengtao; Lv, Zhenling; Li, Lihui; Bin, Li; Luo, Qiaoling; Xu, Hongxing; Xu, Yunfeng

doi:10.1007/s10577-013-9366-8

Cited by 77 publications

(52 citation statements)

References 42 publications

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“…elongatum to wheat by homoeologous recombination. A wheat streak mosaic virus resistance gene Wsm1 was transferred to wheat from Thinopyrum intermedium (Graybosch et al 2009;Mutti et al 2011;Liang et al 1979) and has been characterized cytogenetically (Ali 2012). The genomic constitution of the leaf rust-resistant wheat-Thinopyrum ponticum partial amphiploid BE-1 has been characterized using FISH and genomic in situ hybridization (GISH) (Sepsi et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Molecular cytogenetic characterization of novel wheat-Thinopyrum bessarabicum recombinant lines carrying intercalary translocations

et al. 2015

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Thinopyrum bessarabicum (2n = 2x = 14, JJ or E(b)E(b)) is a valuable source of genes for bread wheat (2n = 6x = 42) improvement because of its salinity tolerance and disease resistance. Development of wheat-Th. bessarabicum translocation lines by backcrossing the amphiploid in the absence of the Ph1 gene (allowing intergenomic recombination) can assist its utilization in wheat improvement. In this study, six novel wheat-Th. bessarabicum translocation lines involving different chromosome segments (T4BS.4BL-4JL, T6BS.6BL-6JL, T5AS.5AL-5JL, T5DL.5DS-5JS, T2BS.2BL-2JL, and the whole arm translocation T1JS.1AL) were identified and characterized using genomic in situ hybridization (GISH) and fluorescent in situ hybridization (FISH). No background translocations between wheat genomes were observed. The involvement of five of the seven chromosomes and small terminal segments of Th. bessarabicum chromosome arm were important, contributing to both reduced linkage drag of the derived lines by minimizing agronomically deleterious genes from the alien species and high stability including transmission of the alien segment. All three wheat genomes were involved in the translocations with the alien chromosome, and GISH showed the Th. bessarabicum genome was more closely related to the D genome in wheat. All the introgression lines were disomic, stable, and with good morphological characters.

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Section: Discussionmentioning

confidence: 99%

Molecular cytogenetic characterization of novel wheat-Thinopyrum bessarabicum recombinant lines carrying intercalary translocations

et al. 2015

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“…striiformis Puccinia graminis f. sp. tritici Blumeria graminis ND4BL.4RL + 7AS.4RSGerman white rye; WR41-1 [86] Pm20 6BS.6RLProlific rye; WGRC28 [65]ND5DS-4RS.4RLKustro rye and MK25 triticale [87]ND6RLKustro rye and triticale MK25 [87]ND6RGerman white rye; WR49-1 [88] Schizaphis graminum Diurarphis noxia Rhopalosiphum padi Sitobion avenae Mayetiola destructor H25 4BS.4BL-6RLBalbo rye; 88HF16 wheat [65, 89] Aceria tosichell Heterodera avenae CreR 6DS.6RLT-701 triticale derives [90] Heterodera filipjevi ND(6D) 6R[91] a Gene designations according to McIntosh et al [26] unless: b additional with temporary designation or ND no designation …”

Section: Rye As a Source Of Resistance To Biotic Stresses In Wheatmentioning

confidence: 99%

A systematic review of rye (Secale cereale L.) as a source of resistance to pathogens and pests in wheat (Triticum aestivum L.)

2017

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Wheat is globally one of the most important crops. With the current human population growth rate, there is an increasing need to raise wheat productivity by means of plant breeding, along with development of more efficient and sustainable agricultural systems. Damage by pathogens and pests, in combination with adverse climate effects, need to be counteracted by incorporating new germplasm that makes wheat more resistant/tolerant to such stress factors. Rye has been used as a source for improved resistance to pathogens and pests in wheat during more than 50 years. With new devastating stem and yellow rust pathotypes invading wheat at large acreage globally, along with new biotypes of pest insects, there is renewed interest in using rye as a source of resistance.Currently the proportion of wheat cultivars with rye chromatin varies between countries, with examples of up to 34%. There is mainly one rye source, Petkus, that has been widely exploited and that has contributed considerably to raise yields and increase disease resistance in wheat. Successively, the multiple disease resistances conferred by this source has been overcome by new pathotypes of leaf rust, yellow rust, stem rust and powdery mildew. However, there are several other rye sources reported to make wheat more resistant to various biotic constraints when their rye chromatin has been transferred to wheat. There is also development of knowledge on how to produce new rye translocation, substitution and addition lines. Here we compile information that may facilitate decision making for wheat breeders aiming to transfer resistance to biotic constraints from rye to elite wheat germplasm.

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“…Gallego and Benito (1997) found that Al tolerance is controlled by at least two major dominant and independent loci (Alt1 and Alt3) located on chromosomes 6RS and 4R. Powdery mildew resistance genes were also found on chromosomes 4R and 6R (Heun et al 1990;An et al 2013An et al , 2015.…”

Section: Discussionmentioning

confidence: 98%

Production and cytomolecular identification of new wheat-perennial rye (Secale cereanum) disomic addition lines with yellow rust resistance (6R) and increased arabinoxylan and protein content (1R, 4R, 6R)

et al. 2016

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Perennial rye (Secale cereanum, 2n=2x=14, RR) cultivar Kriszta has a large gene pool that can be exploited in wheat breeding. It has high protein and dietary fibre content, carries several resistance genes, tolerant to frost and drought, and adapts well to disadvantageous soil and weather conditions. In order to incorporate agronomically useful features from this perennial rye into cultivated wheat, backcross progenies derived from a cross between the wheat line Mv9kr1 and perennial rye 'Kriszta' have been produced, and addition lines disomic for 1R, 4R and 6R chromosomes have been selected using GISH, FISH and SSR markers. Quality measurements showed that addition of 'Kriszta' chromosomes 4R and 6R to the wheat genome had increased the total protein content. The 4R addition line contained slightly, while 1R and 6R additions significantly higher amount of arabinoxylan than the parental wheat line. Besides this, the 6R addition line appeared to be resistant to yellow rust in highly infected nurseries, consequently it may carry a new effective gene different from that harboured in the 1RS.1BL translocation for resistance to this disease.

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Molecular cytogenetic characterization of a new wheat–rye 4R chromosome translocation line resistant to powdery mildew

Cited by 77 publications

References 42 publications

Molecular cytogenetic characterization of novel wheat-Thinopyrum bessarabicum recombinant lines carrying intercalary translocations

Molecular cytogenetic characterization of novel wheat-Thinopyrum bessarabicum recombinant lines carrying intercalary translocations

A systematic review of rye (Secale cereale L.) as a source of resistance to pathogens and pests in wheat (Triticum aestivum L.)

Production and cytomolecular identification of new wheat-perennial rye (Secale cereanum) disomic addition lines with yellow rust resistance (6R) and increased arabinoxylan and protein content (1R, 4R, 6R)

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