Allopolyploidy and the evolution of plant virus resistance.

ABSTRACT:

Background

The relationship between allopolyploidy and plant virus resistance is poorly understood. To determine the relationship of plant evolutionary history and basal virus resistance, a panel of Nicotiana species from diverse geographic regions and ploidy levels was assessed for resistance to non-coevolved viruses from the genus Nepovirus, family Secoviridae. The heritability of resistance was tested in a panel of synthetic allopolyploids. Leaves of different positions on each inoculated plant were tested for virus presence and a subset of plants was re-inoculated and assessed for systemic recovery.

Results

Depending on the host-virus combination, plants displayed immunity, susceptibility or intermediate levels of resistance. Synthetic allopolyploids showed an incomplete

SUBMITTER: Gottula J 

PROVIDER: S-EPMC4226957 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature