Variation in Arabidopsis developmental responses to oomycete infection: resilience vs changes in life history traits
Lucie Salvaudon1,2,3, Jacqui A Shykoff1,2,3
1Univ Paris-Sud, Laboratoire Ecologie Systématique et Evolution, UMR 8079, F 91405 Orsay, France.
Abstract:
Although plant resistance to aggressors has been well described, there is still little knowledge about the mechanisms underlying their tolerance to pathogens. Tolerance often appears to be mediated by changes in life history traits, shifting host resource investment from growth to reproduction, but whether host phenotype modifications induced after attack are adaptive is not always clear. Here, we investigated the details of the impact of Hyaloperonospora arabidopsidis infection on several biomass, phenology and architectural traits of Arabidopsis thaliana, for three pathogen genotypes and three host plant genotypes that have been shown previously to differ greatly in fecundity and tolerance to infection. We found that, although host genotype explains most of the variance in life history traits, these three lines differ critically in their response to infection, with delays and biomass losses at bolting, together with changes in inflorescence architecture, observed at one extreme host line, and an advantage at bolting for infected plants and no inflorescence alteration for the other. These results suggest that the differences in tolerance observed previously in this pathosystem do not involve plasticity in inflorescence architecture, but may arise from induced changes at the vegetative stage, before plant transition to reproduction.
More Related Videos
04:11Pattern-Triggered Oxidative Burst and Seedling Growth Inhibition Assays in Arabidopsis thaliana
Published on: May 21, 2019
06:58Combining Clearing and Fluorescence Microscopy for Visualising Changes in Gene Expression and Physiological Responses to Plasmodiophora brassicae
Published on: August 5, 2022
Related Concept Videos
Responses to Drought and Flooding
Transcription
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
Transcription Can Produce Different Kinds...
Defenses Against Pathogens and Herbivores
Responses to Heat and Cold Stress
Other Stress Responses in Bacteria
Adaptations that Reduce Water Loss
