Structure of Aegilops ventricosa chromosome 6Nv, the donor of wheat genes Yr17, Lr37, Sr38, and Cre5

Genome ◽  
2005 ◽  
Vol 48 (3) ◽  
pp. 541-546 ◽  
Author(s):  
Anne-Marie Tanguy ◽  
Olivier Coriton ◽  
Paulette Abélard ◽  
Françoise Dedryver ◽  
Joseph Jahier
Keyword(s):  
Triticum Aestivum ◽  
Resistance Genes ◽  
Biochemical Markers ◽  
Distal Part ◽  
Triticum Aestivum L ◽  
Wheat Genome ◽  
Addition Line ◽  
Wheat Line ◽  
Aegilops Ventricosa ◽  
Aegilops Uniaristata

An Aegilops ventricosa Tausch (2n = 28, DvDvNvNv) subtelocentric chromosome added to wheat (Triticum aestivum L.) in a disomic addition line was found to carry the genes for resistance Yr17, Lr37, Sr38, and Cre5 already transferred onto chromosome 2AS of the wheat line VPM1. Previous works demonstrated that this Ae. ventricosa chromosome is translocated with respect to the standard wheat genome. The present investigations showed that this chromosome pre-existed in Ae. ventricosa and contains only chromatin specific to the N genome. Using biochemical markers and suitable cytogenetic materials including the monoisosomic addition line for the translocated long arm (6NvL–2NvS), its structure was defined as being 6NvSdel.6NvL–2NvS. It consists of a segment of the short arm 2Nv, containing the resistance genes, attached to a group 6 chromosome lacking a distal part of its short arm. The 2 re arrangements could already be present in Aegilops uniaristata Vis. (2n = 14, NN), the source of the Nv genome of Ae. ventricosa.Key words: wheat, Aegilops ventricosa, GISH, translocation, isochromosome.

scholarly journals Expansion and Functional Diversification of SKP1-Like Genes in Wheat (Triticum aestivum L.)

2019 ◽  
Vol 20 (13) ◽  
pp. 3295
Author(s):  
Imen HajSalah El Beji ◽  
Said Mouzeyar ◽  
Mohammed-Fouad Bouzidi ◽  
Jane Roche
Keyword(s):  
Triticum Aestivum ◽  
Physcomitrella Patens ◽  
Expression Patterns ◽  
Protein S ◽  
Triticum Aestivum L ◽  
Wheat Genome ◽  
Genome Database ◽  
E3 Ligases ◽  
Expression Platform ◽  
Public Data

The ubiquitin proteasome 26S system (UPS), involving monomeric and multimeric E3 ligases is one of the most important signaling pathways in many organisms, including plants. The SCF (SKP1/Cullin/F-box) multimeric complex is particularly involved in response to development and stress signaling. The SKP1 protein (S-phase kinase-associated protein 1) is the core subunit of this complex. In this work, we firstly identified 92 and 87 non-redundant Triticum aestivum SKP1-like (TaSKP) genes that were retrieved from the latest release of the wheat genome database (International Wheat Genome Sequencing Consortium (IWGSC) RefSeq v1.0) and the genome annotation of the TGAC v1 respectively. We then investigated the structure, phylogeny, duplication events and expression patterns of the SKP1-like gene family in various tissues and environmental conditions using a wheat expression platform containing public data. TaSKP1-like genes were expressed differentially in response to stress conditions, displaying large genomic variations or short insertions/deletions which suggests functional specialization within TaSKP1-like genes. Finally, interactions between selected wheat FBX (F-box) proteins and putative ancestral TaSKP1-like proteins were tested using the yeast two-hybrid (Y2H) system to examine the molecular interactions. These observations suggested that six Ta-SKP1 genes are likely to be ancestral genes, having similar functions as ASK1 and ASK2 in Arabidopsis, OSK1 and OSK20 in rice and PpSKP1 and PpSKP2 in Physcomitrella patens.

scholarly journals Exome association analysis sheds light onto leaf rust ( Puccinia triticina ) resistance genes currently used in wheat breeding ( Triticum aestivum L.)

2019 ◽  
Vol 18 (6) ◽  
pp. 1396-1408 ◽  
Author(s):  
Fang Liu ◽  
Yusheng Zhao ◽  
Sebastian Beier ◽  
Yong Jiang ◽  
Patrick Thorwarth ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Leaf Rust ◽  
Association Analysis ◽  
Resistance Genes ◽  
Puccinia Triticina ◽  
Triticum Aestivum L ◽  
Wheat Breeding
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