Temporal aspects of copper homeostasis and its crosstalk with hormones.
Temporal aspects of copper homeostasis and its crosstalk with hormones.
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DOI：
10.3389/fpls.2015.00255
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发表时间：
2015
影响因子：
5.6
通讯作者：
Sanz A
中科院分区：
文献类型：
--
作者：
Peñarrubia L;Romero P;Carrió-Seguí A;Andrés-Bordería A;Moreno J;Sanz A
为了应对铜对细胞必需和有毒的双重性质，植物暂时调整铜稳态成分的表达，以确保其输送到铜蛋白，同时避免光时间内铜吸收和光合作用反应产生的潜在氧化损伤的干扰。生物钟参与协调植物营养的时间组织，使代谢反应适应日常振荡。这种及时的控制可以改善植物的适应性和繁殖，并具有提高作物产量的生物技术潜力。在单子叶植物和双子叶植物中，包括脱落酸、赤霉素、乙烯、生长素和茉莉酸的激素途径也受到直接时钟和光控制。在这篇综述中，我们重点关注拟南芥和水稻中的铜转运，以及激素在金属稳态中使营养物质可用性与生长需求相匹配并防止金属毒性的可能作用。铜转运蛋白基因的启动子中存在假定的激素依赖性调节元件，这表明激素调节可以满足植物发育过程中特殊的铜需求。可能受激素影响的空间和时间过程包括根部吸收铜的调节、细胞内运输和区室化以及长距离运输到发育中的营养和生殖组织。反过来，激素生物合成和信号传导也受到铜可用性的影响，这表明相互调节受到生物钟中央振荡器的时间控制。这种转录调控网络将环境和激素信号传导与发育途径相协调，以提高微量营养素的获取效率。
To cope with the dual nature of copper as being essential and toxic for cells, plants temporarily adapt the expression of copper homeostasis components to assure its delivery to cuproproteins while avoiding the interference of potential oxidative damage derived from both copper uptake and photosynthetic reactions during light hours. The circadian clock participates in the temporal organization of coordination of plant nutrition adapting metabolic responses to the daily oscillations. This timely control improves plant fitness and reproduction and holds biotechnological potential to drive increased crop yields. Hormonal pathways, including those of abscisic acid, gibberellins, ethylene, auxins, and jasmonates are also under direct clock and light control, both in mono and dicotyledons. In this review, we focus on copper transport in Arabidopsis thaliana and Oryza sativa and the presumable role of hormones in metal homeostasis matching nutrient availability to growth requirements and preventing metal toxicity. The presence of putative hormone-dependent regulatory elements in the promoters of copper transporters genes suggests hormonal regulation to match special copper requirements during plant development. Spatial and temporal processes that can be affected by hormones include the regulation of copper uptake into roots, intracellular trafficking and compartmentalization, and long-distance transport to developing vegetative and reproductive tissues. In turn, hormone biosynthesis and signaling are also influenced by copper availability, which suggests reciprocal regulation subjected to temporal control by the central oscillator of the circadian clock. This transcriptional regulatory network, coordinates environmental and hormonal signaling with developmental pathways to allow enhanced micronutrient acquisition efficiency.
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影响因子：
5.1
作者：
Dekkers, Bas J. W.;Schuurmans, Jolanda A. M. J.;Smeekens, Sjef C. M.
通讯作者：
Smeekens, Sjef C. M.
影响因子：
3.5
作者：
Abdel-Ghany, SE;Burkhead, JL;Pilon, M
通讯作者：
Pilon, M
影响因子：
5.6
作者：
Bolouri Moghaddam MR;Van den Ende W
通讯作者：
Van den Ende W
DOI：
10.1073/pnas.1421545111
发表时间：
2014-12-16
影响因子：
11.1
作者：
Blaby-Haas, Crysten E.;Padilla-Benavides, Teresita;Merchant, Sabeeha S.
通讯作者：
Merchant, Sabeeha S.
影响因子：
7.4
作者：
Brault, M;Amiar, Z;Rona, JP
通讯作者：
Rona, JP