Scientists sequenced the genome of walnuts

Juglans cinerea. Image credit: H. Zell / CC BY-SA 3.0.

Researchers on the College of Connecticut have revealed the primary high-quality reference genome for the virus walnut (Juglans cinerea)a member of the walnut household Juglandaceae.

Juglans cinerea.  Image credit: H. Zell / CC BY-SA 3.0.

Juglans cinerea. Picture credit score: H. Zell / CC BY-SA 3.0.

White walnut, also referred to as white walnut, is a wind-pollinated, deciduous tree native to jap North America.

As soon as extremely prized for its wooden and edible nuts, at this time, it’s at present listed as critically endangered on the IUCN Purple Checklist on account of a decline within the incidence of nut canker, a illness brought on by a fungus. Ophiognomonia clavigignenti-juglandaceae.

Found within the Nineteen Sixties and now current all through the walnut rising vary, this illness had already killed greater than 80% of walnut bushes in lots of states by the Nineties, and threatens the species with extinction.

“We’re involved in figuring out how lots of the walnut populations have already been hybridized with Japanese walnut (Juglans ailantifolia)“What contributes to genetic resistance to fungal an infection,” mentioned Dr. Jill Wegrzyn, a computational biologist within the Division of Ecology and Evolutionary Biology and the Middle for Genomics and Biodiversity on the College of Connecticut.

To deal with the conservation genetics hole, College of Connecticut undergraduate and graduate college students labored with practitioners to generate the primary reference genome for Juglans cinerea.

The chromosome scale repertoire is annotated utilizing present transcriptomic assets and examined within the evolutionary context of just lately sequenced family members Juglandaceae from all over the world.

“The development of the genome was linked to a year-long coaching program that started with high-molecular weight extraction of the goal tree,” the researchers mentioned.

“The scholars labored intently with graduate college students and college to grasp and annotate the challenges related to genome meeting.”

“In doing so, the genome benefited from strong testing strategies,” they added.

“Lastly, this system intersected with practitioners who offered enter on reference accession and the framework that can information the appliance of this high-quality reference sooner or later.”

the results Seem within the journal G3: Genes, Genomes, Genetics.


Christopher R. Guzman Torres et al. Conservation of the threatened North American walnut: a chromosome-wide reference genome for the walnut (Juglans cinerea). G3: Genes, Genomes, Genetics, revealed on-line September 13, 2023; doi: 10.1093/g3journal/jkad189



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