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Daily humidity oscillation regulates the circadian clock to influence plant physiology

Author

Listed:
  • Musoki Mwimba

    (Duke University
    Duke University)

  • Sargis Karapetyan

    (Duke University
    Duke University)

  • Lijing Liu

    (Duke University
    Duke University)

  • Jorge Marqués

    (Duke University
    Duke University)

  • Erin M. McGinnis

    (Duke University
    Duke University)

  • Nicolas E. Buchler

    (Duke University
    Duke University
    North Carolina State University)

  • Xinnian Dong

    (Duke University
    Duke University)

Abstract

Early circadian studies in plants by de Mairan and de Candolle alluded to a regulation of circadian clocks by humidity. However, this regulation has not been described in detail, nor has its influence on physiology been demonstrated. Here we report that, under constant light, circadian humidity oscillation can entrain the plant circadian clock to a period of 24 h probably through the induction of clock genes such as CIRCADIAN CLOCK ASSOCIATED 1. Under simulated natural light and humidity cycles, humidity oscillation increases the amplitude of the circadian clock and further improves plant fitness-related traits. In addition, humidity oscillation enhances effector-triggered immunity at night possibly to counter increased pathogen virulence under high humidity. These results indicate that the humidity oscillation regulates specific circadian outputs besides those co-regulated with the light-dark cycle.

Suggested Citation

  • Musoki Mwimba & Sargis Karapetyan & Lijing Liu & Jorge Marqués & Erin M. McGinnis & Nicolas E. Buchler & Xinnian Dong, 2018. "Daily humidity oscillation regulates the circadian clock to influence plant physiology," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06692-2
    DOI: 10.1038/s41467-018-06692-2
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    Cited by:

    1. Jiayue Tang & Yuanyuan Zhao & Mi Wang & Dianyu Wang & Xuan Yang & Ruiran Hao & Mingzhan Wang & Yanlei Wang & Hongyan He & John H. Xin & Shuang Zheng, 2022. "Circadian humidity fluctuation induced capillary flow for sustainable mobile energy," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Mamoru Matsumura & Mika Nomoto & Tomotaka Itaya & Yuri Aratani & Mizuki Iwamoto & Takakazu Matsuura & Yuki Hayashi & Tsuyoshi Mori & Michael J. Skelly & Yoshiharu Y. Yamamoto & Toshinori Kinoshita & I, 2022. "Mechanosensory trichome cells evoke a mechanical stimuli–induced immune response in Arabidopsis thaliana," Nature Communications, Nature, vol. 13(1), pages 1-15, December.

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