Differential expression of selected Arabidopsis resistant genes under abiotic stress conditions
DOI:
https://doi.org/10.14719/pst.2021.8.4.1213Keywords:
Pathogen-associated molecular patterns, PAMP-triggered immunity, Effector triggered immunity Resistant genes, Decapping, AbioticAbstract
The plant immune system is equipped with several defensive layers to evade pathogen attack. One of the primary defense includes plasma membrane-localized receptors explicitly detect conserved pathogen-associated molecular patterns. Transcriptional reprogramming of resistant genes confers PAMP-triggered immunity. Consequently basal immunity is triggered which is primarily mediated by several intracellular nucleotide-binding leucine rich repeat receptors. Subsequently, nucleotide-binding leucine rich repeat receptors sense pathogens and activate another defense response known as effector triggered immunity. Both the PTI and ETI are mediated by resistant genes. Interestingly, the detailed molecular function of resistant genes is not yet fully revealed. Resistant genes are also well involved in non pathophysiological conditions such as during cold stress, heat stress, duration of exposure of light and drought stress. Here, we have reported that the Arabidopsis resistant genes AT1G17600, AT4G14368, AT4G16860, AT5G40910 and AT5G45050 are temperature regulated. We found that the transcript levels of AT1G58400, AT2G14080, AT2G17055, AT3G51560, AT4G16950, AT5G40910 and AT5G45050 were significantly raised for the plant samples grown under short-day conditions. The transcript levels of AT1G17600, AT1G27180, AT1G33560, AT2G14080, AT3G51560, AT4G16860 and AT4G16950 were upregulated for plants grown under drought stress conditions. In Arabidopsis, the transcriptional reprogramming is modulated by decapping protein factors. There was no significant change in the protein level of DCPs. Our results suggest that under abiotic stress conditions, the resistant genes differentially express independent of the decapping event.
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