A dynamic model of Rubisco turnover in cereal leaves
A dynamic model of Rubisco turnover in cereal leaves
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DOI：
10.1111/j.1469-8137.2005.01584.x
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发表时间：
2006-01-01
期刊：
影响因子：
9.4
通讯作者：
Robinson, D
中科院分区：
文献类型：
--
作者：
Irving, LJ;Robinson, D
一个简单的，改进的模型Rubisco的合成和降解在谷物叶片中的开发使用的叶片寿命获得的数据返回Rubisco蛋白水解和生物合成的最大似然值。它假定叶片Rubisco含量的时间过程可以用对数正态曲线来描述，Rubisco库的降解是指数发生的，曲线参数可以深入了解Rubisco动态在处理或基因型之间的差异;而且，统计分析可以更容易地进行，与以前的研究相比，需要更少的数据，在采样方面允许更大的灵活性。基因转录数据。Rubisco的降解是一个一级衰减过程，Rubisco的生物合成与叶片的伸长速率相关，Rubisco的降解遵循一级动力学，因此必须通过调节Rubisco的生物合成速率而不是蛋白水解速率来控制叶片Rubisco的浓度。
A simple, improved model of Rubisco synthesis and degradation in cereal leaves is developed using data obtained over the leaf lifespan to return maximum likelihood values for Rubisco proteolysis and biosynthesis. It assumes that the time course of leaf Rubisco content can be described using a log-normal curve, and degradation of the Rubisco pool occurs exponentially.Curve parameters give an insight into how Rubisco dynamics differ among treatments or genotypes; also, statistical analyses can be performed more easily, requiring fewer data and allowing more flexibility in sampling than previous studies.Predicted patterns of synthesis correlate well with independent rbc gene transcript data. Rubisco degradation is a first-order decay process, and biosynthesis correlates with leaf elongation rates.As Rubisco degradation takes place according to first-order kinetics, control of leaf Rubisco concentration must be exerted by adjustment of biosynthetic, rather than proteolytic, rates.