| DESIKAN, Radhika, Jakub HORÁK, Christina CHABAN, Virtudes MIRA-RODADO, Janika WITTHÖFT, Kirstin ELGASS, Christopher GREFEN, Man-Kim CHEUNG, Alfred J MEIXNER, Richard HOOLEY, Steven John NEILL, John Travers HANCOCK and Klaus HARTER. The Histidine Kinase AHK5 Integrates Endogenous and Environmental Signals in Arabidopsis Guard Cells. PloS ONE. San Francisco: Public Library of Science, 2008, vol. 3, No 6, p. e2491, 15 pp. ISSN 1932-6203. |
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@article{825604,
author = {Desikan, Radhika and Horák, Jakub and Chaban, Christina and MiraandRodado, Virtudes and Witthöft, Janika and Elgass, Kirstin and Grefen, Christopher and Cheung, ManandKim and Meixner, Alfred J and Hooley, Richard and Neill, Steven John and Hancock, John Travers and Harter, Klaus},
article_location = {San Francisco},
article_number = {6},
keywords = {two-component system; AHK; signal transduction; hydrogene peroxide; stomata; Arabidopsis},
language = {eng},
issn = {1932-6203},
journal = {PloS ONE},
title = {The Histidine Kinase AHK5 Integrates Endogenous and Environmental Signals in Arabidopsis Guard Cells},
url = {http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0002491},
volume = {3},
year = {2008}
}
TY - JOUR
ID - 825604
AU - Desikan, Radhika - Horák, Jakub - Chaban, Christina - Mira-Rodado, Virtudes - Witthöft, Janika - Elgass, Kirstin - Grefen, Christopher - Cheung, Man-Kim - Meixner, Alfred J - Hooley, Richard - Neill, Steven John - Hancock, John Travers - Harter, Klaus
PY - 2008
TI - The Histidine Kinase AHK5 Integrates Endogenous and Environmental Signals in Arabidopsis Guard Cells
JF - PloS ONE
VL - 3
IS - 6
SP - e2491
EP - e2491
PB - Public Library of Science
SN - 19326203
KW - two-component system
KW - AHK
KW - signal transduction
KW - hydrogene peroxide
KW - stomata
KW - Arabidopsis
UR - http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0002491
N2 - Stomatal guard cells monitor and respond to environmental and endogenous signals such that the stomatal aperture is continually optimised for water use efficiency. A key signalling molecule produced is hydrogen peroxide (H2O2). Here, we identify a pathway by which H2O2 is sensed and transduced to effect stomatal closure. Histidine kinases (HK) are part of two-component signal transduction systems that act to integrate environmental stimuli into a cellular response via a phosphotransfer relay mechanism. Here we report that in addition to the predicted cytoplasmic localisation of this protein, AHK5 also appears to co-localise to the plasma membrane. Although AHK5 is expressed at low levels in guard cells, we identify a unique role for AHK5 in stomatal signalling. Our findings identify an integral signalling function for AHK5 that acts to integrate multiple signals via H2O2 homeostasis and is independent of ABA signalling in guard cells.
ER -
DESIKAN, Radhika, Jakub HORÁK, Christina CHABAN, Virtudes MIRA-RODADO, Janika WITTHÖFT, Kirstin ELGASS, Christopher GREFEN, Man-Kim CHEUNG, Alfred J MEIXNER, Richard HOOLEY, Steven John NEILL, John Travers HANCOCK and Klaus HARTER. The Histidine Kinase AHK5 Integrates Endogenous and Environmental Signals in Arabidopsis Guard Cells. \textit{PloS ONE}. San Francisco: Public Library of Science, 2008, vol.~3, No~6, p.~e2491, 15 pp. ISSN~1932-6203.
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