| 多胺及其合成抑制剂MGBC对稀脉萍成花反应的影响 |
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| 引用本文： | 尹路明,曹宗巽.多胺及其合成抑制剂MGBC对稀脉萍成花反应的影响[J].植物生理与分子生物学学报,1988(2). |
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| 作者姓名： | 尹路明 曹宗巽 |
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| 作者单位： | 北京大学生物系 中国科学技术大学生物系(尹路明),北京大学生物系 合肥市(曹宗巽) |
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| 摘 要： | 腐胺、亚精胺和精胺对稀脉萍的成花均有一定的抑制作用,这种作用随多肢的浓度增加而增强。多胺合成抑制剂MGBG强烈抑制稀脉萍群体的增殖速率,并使稀脉萍群体在非诱导光周期下开花。这种由MGBG引起的增殖速率的降低及成花诱导作用均可被多胺逆转。稀脉萍成花诱导过程中,内源腐胺含量显著升高,亚精胺则下降。
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| 关 键 词： | 多胺 腐胺 精胺 亚精胺 稀脉萍 开花 甲基乙二醛—2(脒基腙) |
Effects of Polyamines (PA) and MGBG (Inhibitor of PA Biosynthesis) on Flowering of Lemna aequinoctialis 6746 |
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| YIN Lu-Ming,CAO T. H. TSAO.Effects of Polyamines (PA) and MGBG (Inhibitor of PA Biosynthesis) on Flowering of Lemna aequinoctialis 6746[J].Journal Of Plant Physiology and Molecular Biology,1988(2). |
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| Authors: | YIN Lu-Ming CAO T H TSAO |
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| Abstract: | Putrescine (Put), spermine (Spm) and sper-
midine (Spd), when added to the modified
Hutner culture medium, inhibited flower for-
mation of the short-day plant Lemna aequinoc-
tialis 6746 under inductive photoperiods. Among
the three polyamines used, Spm exerted
the greatest inhibition and Put the smallest,
with Spd in between. It seems that the de-
gree of inhibition increases with the number
of amino groups in the molecule. The inhibitor
of polyamine biosynthesis, methylglyoxal-bis
(guanylhydrazone) (MGBG) induced flowering
of the plants growing under continuous light.
That means that MGBG can "replace" short
day treatment. This effect of MGBG on floral
induction can be weakened by the application
of PA's. During the seven day dark induction
of the plants, the endogenous Spd content
decreased, while the endogenous Put content
increased, while the total PA content did not
change much, as assayed by HPLC. PA, at
Iow concentrations, slightly stimulated growth
of the plants, while at higher concentrations.
inhibited growth. |
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| Keywords: | polyamine putrescine spermine spermidine Lemna ae quinoctialis flowering MGBG |
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