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phot1 and phot2 mediate blue light regulation of stomatal opening

Author

Listed:
  • Toshinori Kinoshita

    (Faculty of Science, Kyushu University)

  • Michio Doi

    (Faculty of Science, Kyushu University)

  • Noriyuki Suetsugu

    (National Institute for Basic Biology
    Graduate School of Science, Tokyo Metropolitan University)

  • Takatoshi Kagawa

    (National Institute for Basic Biology
    Unit Process and Combined Circuit, PRESTO, Japan Science and Technology Corporation)

  • Masamitsu Wada

    (National Institute for Basic Biology
    Graduate School of Science, Tokyo Metropolitan University)

  • Ken-ichiro Shimazaki

    (Faculty of Science, Kyushu University)

Abstract

The stomatal pores of higher plants allow for gaseous exchange into and out of leaves. Situated in the epidermis, they are surrounded by a pair of guard cells which control their opening in response to many environmental stimuli, including blue light1,2. Opening of the pores is mediated by K+ accumulation in guard cells through a K+ channel and driven by an inside-negative electrical potential3. Blue light causes phosphorylation and activation of the plasma membrane H+-ATPase that creates this potential1,2,4,5,6. Thus far, no blue light receptor mediating stomatal opening has been identified7, although the carotenoid, zeaxanthin, has been proposed2,8. Arabidopsis mutants deficient in specific blue-light-mediated responses have identified7,9,10,11,12,13,14 four blue light receptors, cryptochrome 1 (cry1), cryptochrome 2 (cry2), phot1 and phot2. Here we show that in a double mutant of phot1 and phot2 stomata do not respond to blue light although single mutants are phenotypically normal. These results demonstrate that phot1 and phot2 act redundantly as blue light receptors mediating stomatal opening.

Suggested Citation

  • Toshinori Kinoshita & Michio Doi & Noriyuki Suetsugu & Takatoshi Kagawa & Masamitsu Wada & Ken-ichiro Shimazaki, 2001. "phot1 and phot2 mediate blue light regulation of stomatal opening," Nature, Nature, vol. 414(6864), pages 656-660, December.
    • Handle: RePEc:nat:nature:v:414:y:2001:i:6864:d:10.1038_414656a
    DOI: 10.1038/414656a
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    Citations

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    Cited by:

    1. Viktorija Vaštakaitė-Kairienė & Aušra Brazaitytė & Jurga Miliauskienė & Rūta Sutulienė & Kristina Laužikė & Akvilė Viršilė & Giedrė Samuolienė & Erik S. Runkle, 2022. "Photon Distribution of Sole-Source Lighting Affects the Mineral Nutrient Content of Microgreens," Agriculture, MDPI, vol. 12(8), pages 1-14, July.
    2. Yusuke Aihara & Bumpei Maeda & Kanna Goto & Koji Takahashi & Mika Nomoto & Shigeo Toh & Wenxiu Ye & Yosuke Toda & Mami Uchida & Eri Asai & Yasuomi Tada & Kenichiro Itami & Ayato Sato & Kei Murakami & , 2023. "Identification and improvement of isothiocyanate-based inhibitors on stomatal opening to act as drought tolerance-conferring agrochemicals," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Shey-Li Lim & Sabrina Flütsch & Jinhong Liu & Luca Distefano & Diana Santelia & Boon Leong Lim, 2022. "Arabidopsis guard cell chloroplasts import cytosolic ATP for starch turnover and stomatal opening," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    4. Yuki Hayashi & Kohei Fukatsu & Koji Takahashi & Satoru N. Kinoshita & Kyohei Kato & Taku Sakakibara & Keiko Kuwata & Toshinori Kinoshita, 2024. "Phosphorylation of plasma membrane H+-ATPase Thr881 participates in light-induced stomatal opening," Nature Communications, Nature, vol. 15(1), pages 1-12, December.
    5. Ki-Hong Jung & Jinwon Lee & Chris Dardick & Young-Su Seo & Peijian Cao & Patrick Canlas & Jirapa Phetsom & Xia Xu & Shu Ouyang & Kyungsook An & Yun-Ja Cho & Geun-Cheol Lee & Yoosook Lee & Gynheung An , 2008. "Identification and Functional Analysis of Light-Responsive Unique Genes and Gene Family Members in Rice," PLOS Genetics, Public Library of Science, vol. 4(8), pages 1-19, August.
    6. Saashia Fuji & Shota Yamauchi & Naoyuki Sugiyama & Takayuki Kohchi & Ryuichi Nishihama & Ken-ichiro Shimazaki & Atsushi Takemiya, 2024. "Light-induced stomatal opening requires phosphorylation of the C-terminal autoinhibitory domain of plasma membrane H+-ATPase," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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