Development and properties of genetically encoded pH sensors in plants.

Development and properties of genetically encoded pH sensors in plants.
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DOI:
10.3389/fpls.2013.00523
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发表时间:
2013
影响因子:
5.6
通讯作者:
Paris N
Paris N
中科院分区:
生物学2区
文献类型:
--
作者:
Martinière A;Desbrosses G;Sentenac H;Paris N

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荧光蛋白(FP)为实时成像技术提供了多种选择,从而深刻地改变了我们对植物细胞的看法。随着成像技术的进步,它们为监测细胞内的物理化学变化提供了可能性。为此,设计了新一代 FP。例如,pHluorin(绿色荧光蛋白的点突变版本)可以获取局部 pH 值估计值。在本文中,我们将描述如何使用基因编码传感器来测量活体组织微环境中的 pH 值,并随后讨论 pH 在 (i) 胞吐作用、(ii) 植物根部离子吸收、(iii) 细胞生长和 (iv) 蛋白质运输中的作用。
Fluorescent proteins (FPs) have given access to a large choice of live imaging techniques and have thereby profoundly modified our view of plant cells. Together with technological improvements in imaging, they have opened the possibility to monitor physico-chemical changes within cells. For this purpose, a new generation of FPs has been engineered. For instance, pHluorin, a point mutated version of green fluorescent protein, allows to get local pH estimates. In this paper, we will describe how genetically encoded sensors can be used to measure pH in the microenvironment of living tissues and subsequently discuss the role of pH in (i) exocytosis, (ii) ion uptake by plant roots, (iii) cell growth, and (iv) protein trafficking.
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