Biophoton emission due to drought injury in red beans: Possibility of early detection of drought injury

Tomoyuki Ohya, Satoshi Yoshida, Ryuzou Kawabata, Hirotaka Okabe, Shoichi Kai

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

We study biophoton emission from red beans (Vigna angularis) during germination and seedling stages under drought stress. Strong photon emission is observed at the root apex when the beans are subjected to the dry condition. The spatial distribution of the emission is broader than that of emission due to the application of strong salt stress reported previously [T. Ohya et al.: Jpn. J. Appl. Phys. 39 (2000) 3696]. When they are rewatered, strong photon emission from them is again observed. As their drought damage is weaker, the intensity of the photon emission is weaker. Photon emission from damaged roots indicates their physiological response to external stress, that is, photon emission intensity measurement is useful for detecting physiological changes and evaluating the degrees of such changes before serious damage takes place without any invasion and destruction.

Original languageEnglish
Pages (from-to)4766-4771
Number of pages6
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume41
Issue number7 A
DOIs
Publication statusPublished - Jul 2002

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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