Journal ArticleDOI
Candidate Genes and Genome-Wide Association Study of Grain Protein Content and Protein Deviation in Durum Wheat
Domenica Nigro,Agata Gadaleta,Giacomo Mangini,Pasqualina Colasuonno,Ilaria Marcotuli,Angelica Giancaspro,Stefania L. Giove,R. Simeone,Antonio Blanco +8 more
TLDR
The combined approaches of candidate genes and genome-wide association mapping led to a better understanding of the genetic relationships between grain storage proteins and grain yield per spike, and provided useful information for marker-assisted selection programs.Abstract:
Stable QTL for grain protein content co-migrating with nitrogen-related genes have been identified by the candidate genes and genome-wide association mapping approaches useful for marker-assisted selection. Grain protein content (GPC) is one of the most important quality traits in wheat, defining the nutritional and end-use properties and rheological characteristics. Over the years, a number of breeding programs have been developed aimed to improving GPC, most of them having been prevented by the negative correlation with grain yield. To overcome this issue, a collection of durum wheat germplasm was evaluated for both GPC and grain protein deviation (GPD) in seven field trials. Fourteen candidate genes involved in several processes related to nitrogen metabolism were precisely located on two high-density consensus maps of common and durum wheat, and six of them were found to be highly associated with both traits. The wheat collection was genotyped using the 90 K iSelect array, and 11 stable quantitative trait loci (QTL) for GPC were detected in at least three environments and the mean across environments by the genome-wide association mapping. Interestingly, seven QTL were co-migrating with N-related candidate genes. Four QTL were found to be significantly associated to increases of GPD, indicating that selecting for GPC could not affect final grain yield per spike. The combined approaches of candidate genes and genome-wide association mapping led to a better understanding of the genetic relationships between grain storage proteins and grain yield per spike, and provided useful information for marker-assisted selection programs.read more
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Journal ArticleDOI
How does nitrogen shape plant architecture
Le Luo,Yali Zhang,Guohua Xu +2 more
TL;DR: Nitrogen regulation of the relationship between plant height and tillering and panicle structure occurs at different developmental stages through integration of the synthesis and distribution of multiple phytohormones.
Journal ArticleDOI
Durum Wheat Breeding in the Mediterranean Region: Current Status and Future Prospects
Ioannis N. Xynias,Ioannis Mylonas,Evangelos G. Korpetis,Elissavet Ninou,Aphrodite Tsaballa,Ilias D. Avdikos,Athanasios Mavromatis +6 more
TL;DR: In this article, a brief historical review focusing on durum wheat domestication and breeding in the Mediterranean region is presented, focusing on protein and characteristics that affect human health and are connected with the consumption of wheat end-products.
Journal ArticleDOI
Whole Genome Scan Reveals Molecular Signatures of Divergence and Selection Related to Important Traits in Durum Wheat Germplasm
Francesca Taranto,Nunzio D’Agostino,Monica Rodriguez,Stefano Pavan,Anna Paola Minervini,Nicola Pecchioni,Roberto Papa,Pasquale De Vita +7 more
TL;DR: The list of divergent loci and loci under selection associated with useful agronomic traits represents an invaluable resource to detect new allelic variants for target genes and for guiding new genomic selection programs in durum wheat.
Journal ArticleDOI
Breeding and biotechnological interventions for trait improvement: status and prospects
TL;DR: The present review systematically analyses the different genomics approaches that are deployed for trait discovery and improvement in major species that could serve as a roadmap for executing similar strategies in other crop species.
Journal ArticleDOI
Prospects of GWAS and predictive breeding for European winter wheat's grain protein content, grain starch content, and grain hardness.
Quddoos H. Muqaddasi,Jonathan Brassac,Erhard Ebmeyer,Sonja Kollers,Viktor Korzun,Odile Argillier,Gunther Stiewe,Jörg Plieske,Martin W. Ganal,Marion S. Röder +9 more
TL;DR: It is observed that all of the investigated traits hold a wide and significant genetic variation, and a significant negative correlation exists between GPC and GSC plus grain yield, and the prospects of predictive breeding for the investigated trait suggested its efficient use in the breeding programs.
References
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Characterization of polyploid wheat genomic diversity using a high-density 90 000 single nucleotide polymorphism array
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