Genome-wide association studies reveal novel loci for resistance to groundnut rosette disease in the African core groundnut collection.

We identified markers associated with GRD resistance after screening an Africa-wide core collection across three seasons in Uganda Groundnut is cultivated in several African countries where it is a major source of food, feed and income. One of the major constraints to groundnut production in Africa is groundnut rosette disease (GRD), which is caused by a complex of three agents: groundnut rosette assistor luteovirus, groundnut rosette umbravirus and its satellite RNA. Despite several years of breeding for GRD resistance, the genetics of the disease is not fully understood.

Positive selection and intrinsic disorder are associated with multifunctional C4(AC4) proteins and geminivirus diversification.

Viruses within the Geminiviridae family cause extensive agricultural losses. Members of four genera of geminiviruses contain a C4 gene (AC4 in geminiviruses with bipartite genomes). C4(AC4) genes are entirely overprinted on the C1(AC1) genes, which encode the replication-associated proteins.

A Mobility Measure for Inpatient Rehabilitation Using Multigroup, Multidimensional Methods.

Background And Purpose: Inpatient rehabilitation facilities (IRFs) report patient functional status to Medicare and other payers using Quality Indicators (QI). While the QI is useful for payment purposes, its measurement properties are limited for monitoring patient progress. A mobility measure based on QI items and additional standardized assessments may enhance clinicians' ability to track patient improvement.

Early transcriptome changes induced by the Geminivirus C4 oncoprotein: setting the stage for oncogenesis.

Background: The Beet curly top virus C4 oncoprotein is a pathogenic determinant capable of inducing extensive developmental abnormalities. No studies to date have investigated how the transcriptional profiles differ between plants expressing or not expressing the C4 oncoprotein.

Results: We investigated early transcriptional changes in Arabidopsis associated with expression of the Beet curly top virus C4 protein that represent initial events in pathogenesis via a comparative transcriptional analysis of mRNAs and small RNAs.

Blueberry necrotic ring blotch virus in Southern Highbush Blueberry: Insights into In Planta and In-Field Movement.

Blueberry necrotic ring blotch virus (BNRBV) causes an emerging disease of southern highbush blueberry (SHB) in the southeastern United States. Disease incidence and severity vary considerably from year to year within the same planting. Experiments were conducted to determine how the virus spreads in the field.