Visualization of ¹⁵O-water flow in tomato and rice in the light and dark using a positron-emitting tracer imaging system (PETIS)

Satoshi Mori Department of Applied Biological Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan; Core Research for Evolutional Science and Technology Japan Science and Technology Corporation, Tsukuba, 305-0047, Japan

Shoichiro Kiyomiya Department of Applied Biological Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan

Hiromi Nakanishi Department of Applied Biological Chemistry, The University of Tokyo, Bunkyo-ku, Tokyo, 113-8657, Japan

Noriko S. Ishioka Takasaki Radiation Chemistry Research Establishment, Japan A tomic Energy Research Institute, Takasaki, 370-1207, Japan

Satoshi Watanabe Takasaki Radiation Chemistry Research Establishment, Japan A tomic Energy Research Institute, Takasaki, 370-1207, Japan

Akihiko Osa Takasaki Radiation Chemistry Research Establishment, Japan A tomic Energy Research Institute, Takasaki, 370-1207, Japan

Shinpei Matsuhashi Takasaki Radiation Chemistry Research Establishment, Japan A tomic Energy Research Institute, Takasaki, 370-1207, Japan

Shoji Hashimoto Takasaki Radiation Chemistry Research Establishment, Japan A tomic Energy Research Institute, Takasaki, 370-1207, Japan

Toshiaki Sekine Takasaki Radiation Chemistry Research Establishment, Japan A tomic Energy Research Institute, Takasaki, 370-1207, Japan

Hiroshi Uchida Central Research Laboratory, Hamamatsu Photonics K.K., Hamakita, 434-0041, Japan

Shingo Nishiyama Central Research Laboratory, Hamamatsu Photonics K.K., Hamakita, 434-0041, Japan

Hideo Tsukada Central Research Laboratory, Hamamatsu Photonics K.K., Hamakita, 434-0041, Japan

Atsunori Tsuji Central Research Laboratory, Hamamatsu Photonics K.K., Hamakita, 434-0041, Japan

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Abstract

¹⁵P-water flow from the roots to the top in tomato (Lycopersicon esculentum Mill.) and rice (Oryza sativa L.) plants was visualized with time using a positron-emitting tracer imaging system (PETIS). The ¹⁵O-water flow was switched on by light and completely stopped in the dark. The flow rate in the stem of tomato and the shoot of rice at a light intensity of 500 μmol·m⁻²·s⁻¹ was 1.9 and 0.4 cm min⁻¹, respectively.

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Visualization of ¹⁵O-water flow in tomato and rice in the light and dark using a positron-emitting tracer imaging system (PETIS)

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Visualization of 15O-water flow in tomato and rice in the light and dark using a positron-emitting tracer imaging system (PETIS)

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Visualization of ¹⁵O-water flow in tomato and rice in the light and dark using a positron-emitting tracer imaging system (PETIS)