低温および長日によるダイコンの抽台・花成における内生ジベレリンの役割

DOI NDLデジタルコレクション 日本農学文献記事索引 Web Site Web Site 被引用文献3件 参考文献14件

書誌事項

タイトル別名
  • Role of Endogenous Gibberellins in Cold-Induced Stem Elongation and Flowering of Japanese Radish (Raphanus sativus L.).
  • Role of endogenous gibberellins in cold

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説明

Eighteen endogenous gibberellins (GAs) which belong to the early 13-hydroxylation pathway and the early non-hydroxylation pathway of GA-biosynthesis were identified by combined gas chromatography/mass spectrometry (GC/MS) in shoots of a cold-requiring plant, Raphanus sativus L. Contents of GA1 and GA4, the probable endogenous biologically-active GAs, increased in the stem during a long-day condition (LD) both with or without a prior cold treatment (CT); however, the increase was greater with CT than without it. In contrast to the contents of 3β-hydroxylated GAs (i.e. GA1 and GA4), that of GA34, a 2β-hydroxylated GA, was decreased significantly by CT and LD, indicating that CT and LD activated the 3β-hydroxylation and inactivated the 2β-hydroxylation during the course of GA-biosynthesis. GA1 and GA4 contents in the leaf decreased during LD subsequent to CT, whereas they increased with LD alone. The increase in GA1 and GA4 contents in the stem probably promoted the cold-induced stem elongation and flowering of R. sativus.

収録刊行物

  • 園芸学会雑誌

    園芸学会雑誌 67 (3), 319-324, 1998

    一般社団法人　園芸学会

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