The results reveal that landraces harbour an extensive repertoire of genes that are absent from modern wheat cultivars and provide a foundational resource for the systematic reintroduction of adaptive variation to enhance wheat resilience and sustainability in the face of climate change.
Abstract
There is a need to breed superior wheat cultivars to meet increasing global food demand. However, modern cultivars have undergone a substantial loss of genetic diversity due to intensive breeding. A pool of genetic diversity remains untapped in wheat landraces, and pangenomics can help identify genes of potential agronomic importance in these old lines that can be applied to accelerate wheat improvement. Here, we have constructed the largest wheat pangenome to date, representing 1,061 diverse individuals (827 landraces and 234 modern cultivars) from 47 countries across six continents. We identified 10,426 predicted gene models specific to landraces that are enriched for functions associated with disease resistance, abiotic stress adaptation, and symbiosis. Our results reveal that landraces harbour an extensive repertoire of genes that are absent from modern wheat cultivars and provide a foundational resource for the systematic reintroduction of adaptive variation to enhance wheat resilience and sustainability in the face of climate change.
Turkish wheat landraces are heterogeneous populations that have been maintained by farmers under contrasting local conditions. Evidence from morphological, physiological, and molecular research indicates substantial allelic variation and population structure associated with geography and environment. This diversity has...
B. Özdemir, M. Ülker, S. Najafi· International Journal of Agr...· 0 citations
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Comparison among landraces and modern varieties indicated that landraces exhibit a broader range of 2C content than cultivars, but a clear clustering based on geographic origin was not observed, and genome size data provided here could offer an additional layer of information for germplasm collections and serve as a st...
Ahmet Gökçebel, Angelos C. Kyratzis, N. Nikoloudakis· Plants· 0 citations
The grain quality traits of protein content, grain weight and size are socially and economically important for wheat (Triticum aestivum) breeding. Modern wheat germplasm has limited genetic variation for vital traits, including grain quality, underscoring the need to investigate ancestral varieties/landraces for benefi...
Luqman B. Safdar, M. J. Foulkes, Alix Cornish et al.· New Phytologist· 0 citations
Wheat (
Triticum aestivum
L.) is one of the most important cereal crops in the world. It supplies nearly 18–20% of global dietary calories and protein, sustaining the food security of over 2.5 billion people. Global food demand is projected to increase by 35–56% by 2050, placing additional pressure on wheat product...
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