Metabolic trade-offs between biomass synthesis and photosynthate export at different light intensities in a genome-scale metabolic model of rice.
Metabolic trade-offs between biomass synthesis and photosynthate export at different light intensities in a genome-scale metabolic model of rice.
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DOI：
10.3389/fpls.2014.00656
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发表时间：
2014
影响因子：
5.6
通讯作者：
Fell DA
中科院分区：
文献类型：
--
作者：
Poolman MG;Kundu S;Shaw R;Fell DA
此前，我们已经使用水稻代谢的基因组规模模型来描述水稻在展开的叶片中如何在不同的光强下重新配置代谢。虽然这证明了叶片的新陈代谢得到了充分的反映，但在模型中，情况并不是叶片的典型功能--为植物的其余部分提供物质。在这里，我们扩展了我们的分析，以探索向源叶的过渡，因为光合作用的出口增加，以牺牲叶片生物量前体为代价，同样是作为光强度的函数。特别是，我们调查了当叶片产生较小范围的化合物出口到韧皮部时，线粒体和叶绿体代谢之间的相互作用是否发生了与当光照强度增加时生长的生物质合成中所见的相同的变化。我们的结果表明，在质量上发生了相同的变化，尽管有轻微的定量差异，反映了不同代谢输出的能量和氧化还原需求的不同。
Previously we have used a genome scale model of rice metabolism to describe how metabolism reconfigures at different light intensities in an expanding leaf of rice. Although this established that the metabolism of the leaf was adequately represented, in the model, the scenario was not that of the typical function of the leaf—to provide material for the rest of the plant. Here we extend our analysis to explore the transition to a source leaf as export of photosynthate increases at the expense of making leaf biomass precursors, again as a function of light intensity. In particular we investigate whether, when the leaf is making a smaller range of compounds for export to the phloem, the same changes occur in the interactions between mitochondrial and chloroplast metabolism as seen in biomass synthesis for growth when light intensity increases. Our results show that the same changes occur qualitatively, though there are slight quantitative differences reflecting differences in the energy and redox requirements for the different metabolic outputs.
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影响因子：
16.6
作者：
Chindelevitch, Leonid;Trigg, Jason;Regev, Aviv;Berger, Bonnie
通讯作者：
Berger, Bonnie
影响因子：
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作者：
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通讯作者：
Ware D
影响因子：
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作者：
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通讯作者：
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