百合花粉萌发过程中，快速淀粉合成与呼吸作用增强相关。
Rapid starch synthesis associated with increased respiration in germinating lily pollen.
作者信息
Dickinson D B
机构信息
Department of Horticulture, University of Illinois, Urbana, Illinois 61801.
出版信息
Plant Physiol. 1968 Jan;43(1):1-8. doi: 10.1104/pp.43.1.1.
In vitro studies of germinating Lilium longiflorum pollen showed that starch increased more rapidly during the first 30 minutes of incubation than during the next several hours. The period of rapid starch formation coincided with the first period of high respiration. An estimate was made of the extra ATP utilized to form extra starch during the first 30 minutes, and this estimate indicates that starch synthesis accounts for a significant portion of the initial high rate of respiration. This pattern of respiration and starch synthesis was not altered when pollen germinated in a pentaerythritol medium that could not be metabolized instead of the standard sucrose medium.Sucrose was the predominant sugar in mature lily pollen. This sugar decreased 50% during several hours incubation in pentaerythritol culture medium. Reducing sugars remained low during incubation which may indicate that sucrose breakdown is regulated by the rate of utilization of hexose units.
对麝香百合花粉萌发的体外研究表明，在培养的最初30分钟内淀粉增加的速度比接下来的几个小时更快。淀粉快速形成的时期与第一个高呼吸期相吻合。对在最初30分钟内用于形成额外淀粉的额外ATP进行了估算，该估算表明淀粉合成占初始高呼吸速率的很大一部分。当花粉在不能被代谢的季戊四醇培养基中而不是标准蔗糖培养基中萌发时，这种呼吸和淀粉合成模式没有改变。蔗糖是成熟百合花粉中的主要糖类。在季戊四醇培养基中培养数小时后，这种糖减少了50%。在培养过程中还原糖含量一直很低，这可能表明蔗糖的分解受己糖单位利用速率的调节。
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