Mini Review: Uneasy Unions: Quality Effects of Rye Chromatin Transfers to Wheat

Graybosch, Robert A.

doi:10.1006/jcrs.2000.0336

Cited by 161 publications

(135 citation statements)

References 85 publications

Supporting

Mentioning

115

Contrasting

Unclassified

Order By: Relevance

“…Various forms of the short arm of rye (Secale cereale) chromosome 1 (1RS) have been introduced to confer disease and pest resistance on wheat (Triticum aestivum) in the form of 1AL.1RS, 1BL.1RS, and 1DL.1RS (Friebe et al, 1996;Graybosch, 2001), and roughly 50% of the wheat varieties from the International Maize and Wheat Improvement Center (CIMMYT) contain the 1BL.1RS translocation (Kishii et al, 2008). While the 1BL.1RS translocation is the most common wheat-rye translocation due to the resistance it confers, the long arm of rye chromosome 2 (2RL) also carries resistance genes, especially for Hessian fly (Mayetiola destructor Say) biotype L, the most destructive insect to wheat (Hatchett et al, 1993).…”

Section: Introductionmentioning

confidence: 99%

Expression analysis of individual homoeologous wheat genome- and rye genome-specific transcripts in a 2BS.2RL wheat-rye translocation

Lee

Seo

2014

Genes Genet. Syst.

View full text Add to dashboard Cite

Wheat-rye translocations are widely used in wheat breeding to confer resistance against abiotic and biotic stress. Studying gene expression in wheat-rye translocations is complicated due to the presence of homoeologous genes in hexaploid wheat and high levels of synteny between wheat and rye chromatin. To distinguish transcripts expressed from each of the three wheat genomes and those from rye chromatin, genomic probes generated from diploid progenitors of wheat and rye were synthesized on a custom array. A total of 407 transcripts showed homoeologous genome ('A', 'B' or 'D' genome)-or rye genome ('R')-specific differential expression, based on unequal values of probe hybridization. In a 2BS.2RL wheat-rye translocation, thirteen of the 407 transcripts showed preferential expressions from rye chromatin. As well as quantifying variation in homoeologous transcript in wheat-rye translocations, this study also provides a potential aid to examine the contribution of the subgenomes to complex allohexapolyploids.

show abstract

Section: Introductionmentioning

confidence: 99%

Expression analysis of individual homoeologous wheat genome- and rye genome-specific transcripts in a 2BS.2RL wheat-rye translocation

Lee

Seo

2014

Genes Genet. Syst.

View full text Add to dashboard Cite

show abstract

“…Several virulent strains of powdery mildew have emerged rendering the gene ineffective. In fact, it is one of the major reasons that an epidemic boom of wheat powdery mildew was recorded in China in the early 1990s (Graybosch, 2001;Ryabchenko et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Molecular detection of disease resistance genes to powdery mildew (Blumeria graminis f. sp. tritici) in wheat (Triticum aestivum) cultivars

Mwale¹,

Tang²,

Chilembwe³

2017

Afr. J. Biotechnol.

View full text Add to dashboard Cite

A study was conducted to detect the presence of disease resistance genes to infection of wheat powdery mildew (Blumeria graminis f. sp. tritici) in selected wheat cultivars from China using molecular markers. Genomic DNA of sixty cultivars was extracted and tested for the presence of selected prominent resistance genes to the fungal disease using molecular markers linked to Pm genes. Results showed that 17 cultivars were detected with Pm2 gene, 24 cultivars were detected with Pm4b gene, two cultivars were detected with Pm6 gene while 24 wheat cultivars were detected with Pm8 gene. Multiple genes were also detected in the study. Cultivars Xinxuan2039, Lankao008 and Zhengmai366 were detected with possible multiple Pm2+Pm4b+Pm8 genes while Yumai368 was detected with possible multiple genes Pm2+Pm4b+Pm6. The results of this study provide a significant contribution to breeding for resistance to wheat powdery mildew disease since the identified cultivars detected with Pm genes will contribute to further studies on improving wheat resistance to the disease. Also, the continued resistance of cultivars with designated resistance genes demonstrates that the responsible Pm genes are still effective in overcoming powdery mildew infections.

show abstract

“…Cereal rye has provided wheat breeders with several useful genes, predominantly encoding specific disease resistances, but also in the form of the 1BL.1RS translocation, a yield advantage, albeit associated with an enduse quality defect (Berzonsky and Francki 1999;Graybosch 2001). .…”

Section: Discussionmentioning

confidence: 99%

The Chinese bread wheat cultivar Xiaoyanmai 7 harbours genes encoding a pair of novel high-molecular-weight glutenin subunits inherited from cereal rye

et al. 2016

View full text Add to dashboard Cite

The high-molecular-weight glutenin subunits (HMW-GS) represent a major component of the endosperm storage protein in the grains of wheat and its related species. Their technological importance results from their ready formation of intermolecular disulfide bonds, which underlie much of the visco-elasticity displayed by gluten and hence the processing quality of the flour. Here, sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) analysis revealed that the Chinese wheat cultivar Xiaoyanmai 7 formed four distinct HMW-GS, two of which are likely the product of a known allele at the Glu-B1 locus, whereas the other two did not match any known HMW-GS. A combined analysis based on reversed-phase high-performance liquid chromatography (RP-HPLC), N-terminal sequencing and mass spectrometry confirmed that the two novel proteins were genuine HMW-GS. Inspection of the DNA sequences showed that one of the novel HMW-GS was encoded by an x-type and the other by a y-type secalin gene. A karyotypic analysis confirmed that six of the seven pairs of Xiaoyanmai 7’s D genome chromosomes (the exception was chromosome 2D) had been replaced by rye chromosomes. The y-type HMW secalin present in Xiaoyanmai 7 differed from the standard By and Dy HWM-GS by the presence of an additional cysteine residue in its C-terminal domain.

show abstract

Mini Review: Uneasy Unions: Quality Effects of Rye Chromatin Transfers to Wheat

Cited by 161 publications

References 85 publications

Expression analysis of individual homoeologous wheat genome- and rye genome-specific transcripts in a 2BS.2RL wheat-rye translocation

Expression analysis of individual homoeologous wheat genome- and rye genome-specific transcripts in a 2BS.2RL wheat-rye translocation

Molecular detection of disease resistance genes to powdery mildew (Blumeria graminis f. sp. tritici) in wheat (Triticum aestivum) cultivars

The Chinese bread wheat cultivar Xiaoyanmai 7 harbours genes encoding a pair of novel high-molecular-weight glutenin subunits inherited from cereal rye

Contact Info

Product

Resources

About