Out of Shape During Stress: A Key Role for Auxin.
Out of Shape During Stress: A Key Role for Auxin.
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DOI：
10.1016/j.tplants.2018.05.011
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发表时间：
2018-09
影响因子：
20.5
通讯作者：
Testerink C
中科院分区：
文献类型：
--
作者：
Korver RA;Koevoets IT;Testerink C
在大多数非生物胁迫条件下，包括盐和水分亏缺，植物根的发育可塑性由植物激素生长素调节。生长素浓度的变化通常归因于茎源长距离生长素流的变化。然而，最近的证据表明，重要的贡献，短距离的生长素运输从本地存储和本地生长素的生物合成，共轭和氧化过程中的非生物胁迫。我们在这里讨论目前的知识长距离生长素运输的压力反应，并随后辩论如何短距离生长素运输和吲哚-3-乙酸（IAA）代谢发挥作用，影响最终生长素积累和信号模式。我们的分析强调了考虑所有这些组件在一起的重要性，并强调了使用数学建模预测植物的生理反应。最近的研究结果在细胞器膜上的主动生长素运输和质外体和细胞质pH值的影响，被动生长素流入细胞突出的重要性，短距离的生长素运输的本地生长素最大的根暴露于压力。基于以前发表的基因表达数据，我们已经确定了IAA的生物合成和共轭基因的根，可能是相关的IAA积累模式的压力诱导的表达模式。这些结果强调了将IAA稳态纳入模型预测生长素水平和流量的重要性。最近在涉及生长素相关过程的数学模型方面的进展突出了在植物中和在计算机实验中结合的价值，当解开植物中复杂的激素变化时。
In most abiotic stress conditions, including salinity and water deficit, the developmental plasticity of the plant root is regulated by the phytohormone auxin. Changes in auxin concentration are often attributed to changes in shoot-derived long-distance auxin flow. However, recent evidence suggests important contributions by short-distance auxin transport from local storage and local auxin biosynthesis, conjugation, and oxidation during abiotic stress. We discuss here current knowledge on long-distance auxin transport in stress responses, and subsequently debate how short-distance auxin transport and indole-3-acetic acid (IAA) metabolism play a role in influencing eventual auxin accumulation and signaling patterns. Our analysis stresses the importance of considering all these components together and highlights the use of mathematical modeling for predictions of plant physiological responses. Recent findings in active auxin transport over organelle membranes and the influence of apoplastic and cytosolic pH on passive auxin flow into the cell highlight the importance of short-distance auxin transport for local auxin maxima in roots exposed to stress. Based on previously published gene expression data, we have identified stress-induced expression patterns of IAA biosynthesis and conjugation genes in the root that could be relevant for IAA accumulation patterns. These results underscore the importance of incorporating IAA homeostasis into models predicting auxin levels and flow. Recent advances in mathematical models involving auxin-related processes highlight the value of combining in planta and in silico experiments when unraveling complex hormonal changes in plants.
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影响因子：
6.9
作者：
Armengot L;Marquès-Bueno MM;Jaillais Y
通讯作者：
Jaillais Y
DOI：
10.1073/pnas.1613499114
发表时间：
2017-06-13
影响因子：
11.1
作者：
Barbez, Elke;Duenser, Kai;Busch, Wolfgang
通讯作者：
Busch, Wolfgang
影响因子：
9.2
作者：
Galvan-Ampudia, Carlos S.;Julkowska, Magdalena M.;Testerink, Christa
通讯作者：
Testerink, Christa
影响因子：
5.6
作者：
Chai C;Subudhi PK
通讯作者：
Subudhi PK
影响因子：
11.6
作者：
Julkowska, Magdalena M.;Koevoets, Iko T.;Testerink, Christa
通讯作者：
Testerink, Christa