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Rapid shoot‐to‐root signalling regulates root hydraulic conductance via aquaporins
Author(s) -
VANDELEUR REBECCA K.,
SULLIVAN WENDY,
ATHMAN ASMINI,
JORDANS CHARLOTTE,
GILLIHAM MATTHEW,
KAISER BRENT N.,
TYERMAN STEPHEN D.
Publication year - 2014
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.12175
Subject(s) - shoot , xylem , phloem , turgor pressure , aquaporin , shading , horticulture , hydraulic conductivity , topping , botany , auxin , chemistry , biology , art , ecology , biochemistry , soil water , gene , visual arts
Investigating the relationship between transpiration and root hydraulic conductance Vandeleur et al report that leaf area reduction reduces root hydraulic conductance in grapevine, soybean and maize. The reduction occurs rapidly and involves root aquaporins. They show that the shoot‐to‐root signal could be hydraulic and mediated through the xylem. An interesting observation is the very rapid reduction in root hydraulic conductance following shoot decapitation.