A-4 根寄生雑草 Striga hermonthica の種子発芽に対するエチレンの関与

概要

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Experiments were undertaken to verify the involvement of ethylene in germination of the hemiparaitic angiosperm Striga hermonthica (Del.) Benth. Germination was inhibited by AVG (aminoethoxyvinyl glycine), an inhibitor of ACC synthase activity, and restored by ACC (1-aminocyclopropane-1-carboxylic asid), the immediate ethylene precursor. Ethylene release from GR24-treated seeds commenced 6 h after treatment, while germination was first visible 12 h later. These results strongly suggest involvement of ethylene is S. hermonthica germination. RNAs, isolated from GR24-treated seeds, were used for PCR-based amplification of DNA fragments encoding the ACC synthase-active site domain. Three DNA fragments, indicating involvement of 3 different ACC synthase genes, were identified.
植物化学調節学会の論文
1998-10-01