Open AccesspH biosensing in the plant apoplast—a focus on root cell elongation
Author(s) -
Hortense Moreau,
Sabine Zimmermann,
Isabelle Gaillard,
Nadine Paris
Publication year - 2021
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1093/plphys/kiab313
Subject(s) - apoplast , context (archaeology) , hypocotyl , fluorescence , plant root , plant cell , biophysics , plant growth , elongation , plant development , cell wall , botany , chemistry , biological system , biochemical engineering , biology , biochemistry , horticulture , materials science , engineering , physics , gene , paleontology , quantum mechanics , ultimate tensile strength , metallurgy
The pH parameter of soil plays a key role for plant nutrition as it is affecting the availability of minerals and consequently determines plant growth. Although the mechanisms by which root perceive the external pH is still unknown, the impact of external pH on tissue growth has been widely studied especially in hypocotyl and root. Thanks to technological development of cell imaging and fluorescent sensors, we can now monitor pH in real time with at subcellular definition. In this focus, fluorescent dye-based, as well as genetically-encoded pH indicators are discussed especially with respect to their ability to monitor acidic pH in the context of primary root. The notion of apoplastic subdomains is discussed and suggestions are made to develop fluorescent indicators for pH values below 5.0.
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