CellBioNewsNov 25, 2023

#Pangenomic study of #water_caltrop: Structural variations play a role in #speciation and asymmetric #subgenome #evolution.

#Trapa #allopolyploidization

https://phys.org/news/2023-11-pangenomic-caltrop-variations-play-role.html

Pangenomic study of water caltrop: Structural variations play a role in speciation and asymmetric subgenome evolution

Rice, maize, and wheat provide more than half of the calories consumed by humans. The decrease in crop diversity poses a significant risk to global food security. Therefore, the utilization of orphan crops has become an effective approach to address food security crises. Nevertheless, in the face of rapid urban and rural modernization and the intensification of agricultural practices, the availability of wild and cultivated orphan crops is dwindling, with a noticeable disparity in their collection, preservation, and application of modern breeding techniques.

Phys.org
CellBioNewsJan 17, 2023

Researchers decode broomcorn #millet #subgenome #gene loss.

#polyploidy #evolution #agriculture

https://phys.org/news/2023-01-decode-broomcorn-millet-subgenome-gene.html

Researchers decode broomcorn millet subgenome gene loss

Polyploidy is prevalent in plants and has played a significant role in the evolution of almost all angiosperm genomes. For example, many domesticated crops are either polyploids (e.g., wheat, coffee, cotton and peanut) or paleopolyploids (e.g., rice, maize, soybean and sorghum). After polyploidization, particularly in allopolyploidy, the subgenomes may reduce potential genetic incompatibilities through rediploidization, a process that involves rapid gene losses. Despite the important role of diploidization in the evolutionary innovation of new genes and new species, the evolutionary forces that drive the diploidization process and their underlying mechanisms remain unclear.

Phys.org