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Lichtabhängige Induktion der Bildung von Sekiguchi‐Läsionen durch Bipolaris oryzae bei der Reissorte Sekiguchi‐asahi
Author(s) -
Arase S.,
Fukuyama R.,
Honda Y.
Publication year - 2000
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1046/j.1439-0434.2000.00497.x
Subject(s) - lesion , biology , fluorescence , wavelength , darkness , botany , optics , pathology , medicine , physics
The effect of light irradiation on Sekiguchi lesion formation induced by infection with Bipolaris oryzae on rice sl mutants was investigated. Although the Sekiguchi lesions formed exclusively under daylight fluorescent lamps, brown spots and necrotic spot lesions formed in the dark. The Sekiguchi lesions were larger than the brown spot lesions. When leaf blades inoculated with B. oryzae were irradiated through band‐pass filters of BPB‐45, BPB‐50, BPB‐55, and BPB‐60, Sekiguchi lesions were formed regardless of the BPB filters' wavelengths. Under black‐light lamps, near‐infrared fluorescent lamps, or in the dark, however, brown spot lesions were induced by B. oryzae . The effective wavelength region for light‐dependent Sekiguchi lesion formation was 400–700 nm. Furthermore, there was a direct correlation between the length of the radiation wavelengths and the size of the Sekiguchi lesions.