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Identification and characterization of a core set of ROS wave-associated transcripts involved in the systemic acquired acclimation response of Arabidopsis to excess light [H2O2]

ABSTRACT: Identification and characterization of a core set of ROS wave-associated transcripts involved in the systemic acquired acclimation response of Arabidopsis to excess light [H2O2]

PROVIDER: PRJNA481719 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7536130.fastq.gz	Fastqsanger.gz
	SRR7536140.fastq.gz	Fastqsanger.gz
	SRR7536150.fastq.gz	Fastqsanger.gz
	SRR7536160.fastq.gz	Fastqsanger.gz
	SRR7536170.fastq.gz	Fastqsanger.gz

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MYB30 orchestras ROS wave-triggered systemic transcriptomic responses and plant acclimation in Arabidopsis

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Identification and characterization of a core set of ROS wave-associated transcripts involved in the systemic acquired acclimation response of Arabidopsis to excess light [H2O2]

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Project description:Cell-to-cell communication is fundamental to multicellular organisms and unicellular organisms living in a microbiome. It is thought to have evolved as a stress- or quorum-sensing mechanism in unicellular organisms. A unique cell-to-cell communication mechanism that uses reactive oxygen species (ROS) as a signal (termed the ‘ROS wave’) was identified in flowering plants. This process is essential for systemic signaling and plant acclimation to stress and can spread from a small group of cells to the entire plant within minutes. Whether a similar signaling process is found in other organisms is however unknown. Here we report that the ROS wave can be found in unicellular algae, amoeba, ferns, mosses, mammalian cells, and isolated hearts. We further show that this process can be triggered in unicellular and multicellular organisms by a local stress or H2O2 treatment and blocked by the application of catalase or NADPH oxidase inhibitors, and that in unicellular algae it communicates important stress-response signals between cells. Taken together, our findings suggest that an active process of cell-to-cell ROS signaling, like the ROS wave, evolved before unicellular and multicellular organisms diverged. This mechanism could have communicated an environmental stress signal between cells and coordinated the acclimation response of many different cells living in a community. The finding of a signaling process, like the ROS wave, in mammalian cells further contributes to our understanding of different diseases and could impact the development of new drugs that target for example cancer or heart disease.

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Identification and characterization of a core set of ROS wave-associated transcripts involved in the systemic acquired acclimation response of Arabidopsis to excess light [Timecourse]

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Identification and characterization of a core set of ROS wave-associated transcripts involved in the systemic acquired acclimation response of Arabidopsis to excess light [DPI]

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Effect of ROS (H2O2) on undifferentiated NSC

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Effecto of ROS (H2O2) on undifferentiated NSC

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Project description:We show that an abrupt waterlogging treatment of Arabidopsis thaliana plants triggers a systemic ROS and calcium wave response, and that the waterlogging-triggered ROS wave response is dependent on RBOHD, calcium-permeable channels GLR3.3 and GLR3.6, and aquaporin PIP2;1 proteins. We further show that waterlogging stress is accompanied by a rapid systemic transcriptomic response that is evident as early as 10 min following waterlogging initiation and is partially dependent on RBOHD. Interestingly, the abrupt waterlogging stress resulted in the triggering of a rapid hydraulic wave response and the transient opening of stomata on leaves. Taken together, our findings reveal that the initiation of waterlogging stress in plants is accompanied by rapid systemic transcriptomic and physiological responses that involve the ROS, calcium, and hydraulic waves. These findings reveal that systemic plant responses to waterlogging stress are rapid and at least partially dependent on cell-to-cell signaling mechanisms.

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Project description:MYB30 was found to regulate reactive oxygen species (ROS) - mediated systemic transcriptomics responses to light stress in Arabidopsis

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