2024-03-28T21:59:51Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1090712016-02-18T02:55:03Zcom_10261_103com_10261_1col_10261_482
Inhibition of root plasma membrane H+-ATPase by drought is mediated by the abscisic acid signalling pathway
Planes, María Dolores
Hassan M., Younis
Serrano, Ramón
Poster presented at the 4th International Workshop - Plant Abiotic Stress, Cyprus, November 17th, 2011.
The plasma membrane H+-ATPase of stomata gueard cells is
inhibited by abscisisc acid (ABA) during drought stress and this is
important for stomata closure (Merlot et al, 2007, EMBO J 26: 3216). In the present work we have investigated the regulation of the enzyme by drought and ABA in wheat and Arabidopsis roots.
Root H+-ATPase is inhibited by drought. Addition of ABA was also inhibitory and no inhibition by drought was observed in an ABA-insensitive Arabidopsis mutant. Inhibition of H+-ATPase correlates with neither decreased phosphorylation of the penultimate threonine nor decreased amount of the enzyme. An inhibitory phosphorylation
mediated by ABA-activated protein kinases (SnRK2) is proposed.
2015-01-02T10:33:41Z
2015-01-02T10:33:41Z
2015-01-02
póster de congreso
4th International Workshop - Plant Abiotic Stress (2011)
http://hdl.handle.net/10261/109071
eng
Sí
openAccess