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Multiple exposures to drought 'train' transcriptional responses in Arabidopsis

Author

Listed:
  • Yong Ding

    (University of Nebraska School of Biological Sciences)

  • Michael Fromm

    (University of Nebraska Center for Biotechnology and Center for Plant Science Innovation)

  • Zoya Avramova

    (University of Nebraska School of Biological Sciences)

Abstract

Pre-exposure to stress may alter plants' subsequent responses by producing faster and/or stronger reactions implying that plants exercise a form of 'stress memory'. The mechanisms of plants' stress memory responses are poorly understood leaving this fundamental biological question unanswered. Here we show that during recurring dehydration stresses Arabidopsis plants display transcriptional stress memory demonstrated by an increase in the rate of transcription and elevated transcript levels of a subset of the stress–response genes (trainable genes). During recovery (watered) states, trainable genes produce transcripts at basal (preinduced) levels, but remain associated with atypically high H3K4me3 and Ser5P polymerase II levels, indicating that RNA polymerase II is stalled. This is the first example of a stalled RNA polymerase II and its involvement in transcriptional memory in plants. These newly discovered phenomena might be a general feature of plant stress–response systems and could lead to novel approaches for increasing the flexibility of a plant's ability to respond to the environment.

Suggested Citation

  • Yong Ding & Michael Fromm & Zoya Avramova, 2012. "Multiple exposures to drought 'train' transcriptional responses in Arabidopsis," Nature Communications, Nature, vol. 3(1), pages 1-9, January.
    • Handle: RePEc:nat:natcom:v:3:y:2012:i:1:d:10.1038_ncomms1732
    DOI: 10.1038/ncomms1732
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    Cited by:

    1. Kögler, Friederike & Söffker, Dirk, 2020. "State-based open-loop control of plant growth by means of water stress training," Agricultural Water Management, Elsevier, vol. 230(C).
    2. Xingyang Song & Guangsheng Zhou & Qijin He, 2021. "Critical Leaf Water Content for Maize Photosynthesis under Drought Stress and Its Response to Rewatering," Sustainability, MDPI, vol. 13(13), pages 1-14, June.

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