Indications for the Occurrence of Nitric Oxide Synthases in Fungi and Plants and the Involvement in Photoconidiation of Neurospora crassa*

Photochemistry and Photobiology - Tập 64 Số 2 - Trang 393-398 - 1996
Helga Ninnemann1, Josef Maier1
1Institut für Pflanzenbiochemie, Universität Tübingen, Tübingen, Germany

Tóm tắt

AbstractIndications for the occurrence of nitric oxide synthases in Dictyostelium, Neurospora, Phycomyces and the leguminous plant Mucuna hassjoo as well as a physiological role of nitric oxide in Neurospora crassa are demonstrated. An exogenous nitric oxide donor, sodium nitroprus‐side, inhibited light‐stimulated conidiation in N. crassa. Specific inhibitors of nitric oxide synthase, like the arginine derivatives NG‐nitro‐L‐arginine (L‐NA) and NG‐nitro‐L‐arginine‐methyl ester (L‐NAME), enhanced conidiation in darkness and in the light, whereas the stereo‐isomer D‐NAME was inactive. This communication reports to our knowledge the first time the presence of enzymatic activity of nitric oxide synthase in fungi and a higher plant and an effect of nitric oxide in fungal photophysiology.

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Photochemistry and Photobiology

Tập 64 Số 2

393-398

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