A novel fluorescent pH probe for expression in plants.

A novel fluorescent pH probe for expression in plants.
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DOI:
10.1186/1746-4811-2-7
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发表时间:
2006-04-06
期刊:
影响因子:
5.1
通讯作者:
Plieth C
Plieth C
中科院分区:
生物学2区
文献类型:
--
作者:
Schulte A;Lorenzen I;Böttcher M;Plieth C

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pH是控制活细胞中许多代谢和信号传导途径的重要参数。重组荧光pH指示剂(pHluorins)已经流行用于监测细胞pH。它们来自最流行的维多利亚水母GFP(Av-GFP)。在这里,我们提出了一种新的荧光pH报告蛋白的橙子海蓬Ptilosarcus gurneyi(Pt-GFP),并比较其性能与pHluorins在植物中的表达和使用。荧光素具有较高的pH敏感性。然而,Pt-GFP具有更宽的pH响应性、优异的动态比率范围和更好的酸稳定性。我们展示了如何Pt-GFP表达拟南芥报告细胞溶质pH钳和细胞溶质pH值的变化,在缺氧和盐胁迫的反应。Pt-GFP似乎是更好的选择时,用于在体内记录植物细胞的pH值。
The pH is an important parameter controlling many metabolic and signalling pathways in living cells. Recombinant fluorescent pH indicators (pHluorins) have come into vogue for monitoring cellular pH. They are derived from the most popular Aequorea victoria GFP (Av-GFP). Here, we present a novel fluorescent pH reporter protein from the orange seapen Ptilosarcus gurneyi (Pt-GFP) and compare its properties with pHluorins for expression and use in plants. pHluorins have a higher pH-sensitivity. However, Pt-GFP has a broader pH-responsiveness, an excellent dynamic ratio range and a better acid stability. We demonstrate how Pt-GFP expressing Arabidopsis thaliana report cytosolic pH-clamp and changes of cytosolic pH in the response to anoxia and salt-stress. Pt-GFP appears to be the better choice when used for in vivo-recording of cellular pH in plants.
DOI: 10.1093/jexbot/52.356.529
发表时间: 2001-04-01
影响因子: 6.9
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