55 アオウキクサ151系統のストレスによる花成誘導因子の生産

概要

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Lemna paucicostata 441 that had been subjected to drought, heat or osmotic stress, released a substance into the surrounding water (Takimoto et alo 1994). This substance incubated with (-)- norepinephrine (NE) has strong flower-inducing activity in Lemna paucicostata 151. Yokoyama et al. (2000) clarified chemical structure of the substance and named FIF from the meaning of flower-inducing factor. In the present paper, we examined the effects of low temperature, salt UV or smell stress and the treatment of supersonic waves on the prodaction and release from Lemna paucicostata 151 of flower-inducing factor. The plants subjected to these stresses were floated on distilled water (WS) and WS was incubated with NE. WS incubation with NE induced flowering of Lemma paucicostata 151. Therefore, Lemna plants that had been subjected to low temperature, salt or smell stress and the treatment of supersonic waves also releases a flower-inducing factor capable of activating NE into the surrounding water. The flower-inducing factor was analyzed by HPLC on a CAPCELL PAK C18 column. Only one major peak was found and the retention time coincided with that of FIE suggesting that the flower-inducing factor is FIF.
植物化学調節学会の論文
2001-10-09