期刊
PLANT SCIENCE
卷 264, 期 -, 页码 179-187出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.plantsci.2017.07.021
关键词
Aquaporin; Channel; Membrane; Multiplicity; Regulation; Solute; Specificity; Water
资金
- Belgian National Fund for Scientific Research (FNRS)
- Interuniversity Attraction Poles Programme-Belgian Science Policy [IAP7/29]
- Belgian French community [ARC16/21-075]
- Bauchau Award
- Move-in Louvain Incoming Postdoctoral Fellowship - Marie Curie Actions of the European Commission
Since the discovery of the first plant aquaporin (AQP) in 1993, our conception of the way plants control cell water homeostasis as well as their global water balance has been revisited. Plant AQPs constitute a large family of evolutionarily related channels that, in addition to water, can also facilitate the membrane diffusion of a number of small solutes, such as urea, CO2, H2O2, ammonia, metalloids, and even ions, indicating a wide range of cellular functions. At the cellular level, AQPs are subject to various regulation mechanisms leading to active/inactive channels in their target membranes. In this review, we discuss several specific questions that need to be addressed in future research. Why are so many different AQPs simultaneously expressed in specific cellular types? How is their selectivity to different solutes controlled (in particular in the case of multiple permeation properties)? What does the molecular interaction between AQPs and other molecules tell us about their regulation and their involvement in specific cellular and physiological processes? Resolving these questions will definitely help us better understand the physiological advantages that plants have to express and regulate so many AQP isoforms.
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