Novel puroindoline and grain softness protein alleles in Aegilops species with the C, D, S, M and U genomes

2005 ◽  
Vol 111 (6) ◽  
pp. 1159-1166 ◽  
Author(s):  
Mingjie Chen ◽  
Mark Wilkinson ◽  
Paola Tosi ◽  
Guangyuan He ◽  
Peter Shewry
Keyword(s):  
Aegilops Species ◽  
Grain Softness ◽  
Grain Softness Protein

The Nor-D3 locus of Triticum tauschii: natural variation and genetic linkage to markers in chromosome 5

Genome ◽  
1991 ◽  
Vol 34 (3) ◽  
pp. 387-395 ◽  
Author(s):  
E. S. Lagudah ◽  
R. Appels ◽  
D. McNeil
Keyword(s):  
Ribosomal Rna ◽  
Intergenic Spacer ◽  
D Genome ◽  
Triticum Tauschii ◽  
Intergenic Spacer Region ◽  
Grain Softness ◽  
High Level ◽  
Rna Genes ◽  
Rdna Polymorphism ◽  
Grain Softness Protein

Variation in the intergenic spacer region of the ribosomal RNA genes (located at the Nor locus) was assayed in a collection of 411 accessions of Triticum tauschii from Turkey, USSR, Iran, Afghanisan, Pakistan, and China. Twenty rDNA genotypes were identified and it was demonstrated that T. tauschii accessions from the USSR and Iran have the highest diversity at the Nor locus. At least four of the rDNA genotypes were demonstrated to be alleles of a single major locus, in segregating F2 progeny analyses. The TaqI restriction fragment associated with rDNA genotype 7 was shown to be the same as the Nor-D3a allele present in all bread wheats (based on chromosome location and length of the intergenic spacer region). This genotype was significantly associated with T. t. ssp. strangulata, previously argued to be the donor of the D genome to hexaploid wheat. The Nor locus showed a high level of recombination with the 5SDna-2 locus, which was also located on chromosome 5D. The Nor locus is placed distal to the 5SDna-2 locus but proximal to the grain softness protein gene (XGsp) on the short arm of chromosome 5D.Key words: D genome, Nor-D3, rDNA polymorphism, chromosomal location.

A review of the occurrence of Grain softness protein-1 genes in wheat (Triticum aestivum L.)

2013 ◽  
Vol 83 (6) ◽  
pp. 507-521 ◽  
Author(s):  
Craig F. Morris ◽  
Hongwei Geng ◽  
Brian S. Beecher ◽  
Dongyun Ma
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L ◽  
Grain Softness ◽  
Grain Softness Protein

scholarly journals Cloning of a wheat 15-kDa grain softness protein (GSP). GSP is a mixture of puroindoline-like polypeptides

1994 ◽  
Vol 223 (3) ◽  
pp. 917-925 ◽  
Author(s):  
Sadequr RAHMAN ◽  
Christopher J. JOLLY ◽  
John H. SKERRITT ◽  
Andrea WALLOSHECK
Keyword(s):  
Grain Softness ◽  
Grain Softness Protein

scholarly journals Sequence Diversity and Identification of Novel Puroindoline and Grain Softness Protein Alleles in Elymus, Agropyron and Related Species

Diversity ◽  
2018 ◽  
Vol 10 (4) ◽  
pp. 114 ◽  
Author(s):  
Mark Wilkinson ◽  
Robert King ◽  
Roberta Grimaldi
Keyword(s):  
Sequence Diversity ◽  
Grain Texture ◽  
Grain Hardness ◽  
Hydrophobic Residues ◽  
Rich Domain ◽  
Elymus Nutans ◽  
End Use ◽  
Grain Softness ◽  
Novel Variation ◽  
Grain Softness Protein

The puroindoline proteins, PINA and PINB, which are encoded by the Pina and Pinb genes located at the Ha locus on chromosome 5D of bread wheat, are considered to be the most important determinants of grain hardness. However, the recent identification of Pinb-2 genes on group 7 chromosomes has stressed the importance of considering the effects of related genes and proteins. Several species related to wheat (two diploid Agropyron spp., four tetraploid Elymus spp. and five hexaploid Elymus and Agropyron spp.) were therefore analyzed to identify novel variation in Pina, Pinb and Pinb-2 genes which could be exploited for the improvement of cultivated wheat. A novel sequence for the Pina gene was detected in Elymus burchan-buddae, Elymus dahuricus subsp. excelsus and Elymus nutans and novel PINB sequences in Elymus burchan-buddae, Elymus dahuricus subsp. excelsus, and Elymus nutans. A novel PINB-2 variant was also detected in Agropyron repens and Elymus repens. The encoded proteins detected all showed changes in the tryptophan-rich domain as well as changes in and/or deletions of basic and hydrophobic residues. In addition, two new AGP sequences were identified in Elymus nutans and Elymus wawawaiensis. The data presented therefore highlight the sequence diversity in this important gene family and the potential to exploit this diversity to modify grain texture and end-use quality in wheat.

Amino Acid Sequence of Wheat Flour Arabinogalactan-Peptide, Identical to Part of Grain Softness Protein GSP-1, Leads to Improved Structural Model

2002 ◽  
Vol 79 (3) ◽  
pp. 329-331 ◽  
Author(s):  
Katie Van den Bulck ◽  
Anne-Marie A. Loosveld ◽  
Christophe M. Courtin ◽  
Paul Proost ◽  
Jozef Van Damme ◽  
...  
Keyword(s):  
Amino Acid ◽  
Amino Acid Sequence ◽  
Wheat Flour ◽  
Structural Model ◽  
Grain Softness ◽  
Grain Softness Protein
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