English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The interactions between biotic and abiotic stress signaling pathways are complex and poorly understood but protein kinase/phosphatase cascades are potentially important components. Aphid fecundity and susceptibility to  Pseudomonas syringae  infection were determined in the low light-grown  Arabidopsis thaliana  wild type and in mutant lines defective in either the protein phosphatase (PP)2A regulatory subunit B'γ ( gamma ;  pp2a-b'γ ) or B'ζ ( zeta ;  pp2a-b'ζ1-1  and  pp2a-b'ζ 1-2 ) and in  gamma zeta  double mutants ( pp2a-b'γζ ) lacking both subunits. All the mutants except for  pp2a-b'ζ 1-1  had significantly lower leaf areas than the wild type. Susceptibility to  P. syringae  was similar in all genotypes. In contrast, aphid fecundity was significantly decreased in the  pp2a-b'γ  mutant relative to the wild type but not in the  pp2a-b'γζ  double mutant. A high light pre-treatment, which led to a significant increase in rosette growth in all mutant lines but not in the wild type, led to a significant decrease in aphid fecundity in all genotypes. The high light pre-treatment abolished the differences in aphid resistance observed in the  pp2a-b'γ  mutant relative to the wild type. The light and CO 2  response curves for photosynthesis were changed in response to the high light pre-treatment, but the high light effects were similar in all genotypes. These data demonstrate that a pre-exposure to high light and the composition of B-subunits on the trimeric PP2A holoenzymes are important in regulating plant resistance to aphids. The functional specificity for the individual regulatory B-subunits may therefore limit aphid colonization, depending on the prevailing abiotic stress environment.

frontiers in plant science

Effects of light and the regulatory B-subunit composition of protein phosphatase 2A on the susceptibility of Arabidopsis thaliana to aphid (Myzus persicae) infestation