pH signature for the responses of arbuscular mycorrhizal fungi to external stimuli.
Environmental and developmental signals can elicit differential activation of membrane proton (H(+)) fluxes as one of the primary responses of plant and fungal cells. In recent work,1 we could determine that during the presymbiotic growth of arbuscular mycorrhizal (AM) fungi specific domains of H(+) flux are activated by clover root factors, namely host root exudates or whole root system. Consequently, activation on hyphal growth and branching were observed and the role of plasma membrane H(+)-ATPase was investigated. The specific inhibitors differentially abolished most of hyphal H(+) effluxes and fungal growth. As this enzyme can act in signal transduction pathways, we believe that spatial and temporal oscillations of the hyphal H(+) fluxes could represent a pH signature for both early events of the AM symbiosis and fungal ontogeny.
Ramos
Alessandro C
AC
Centro de Biologia do Desenvolvimento; Instituto Gulbenkian de Ciência; Oeiras Portugal.
Façanha
Arnoldo R
AR
Lima
Pedro T
PT
Feijó
José A
JA
Annu Rev Plant Physiol Plant Mol Biol. 2001 Jun;52:817-845
11337417
Plant Cell. 1996 Mar;8(3):555-564
12239392
Fungal Genet Biol. 2004 Feb;41(2):262-73
14732271
Curr Genet. 2000 Feb;37(2):112-8
10743567
Proc Natl Acad Sci U S A. 1994 Dec 6;91(25):11841-3
11607500
New Phytol. 1992 Nov;122(3):461-467
33874220
Molecules. 2007 Jul 05;12(7):1290-306
17909485
Appl Environ Microbiol. 1989 Sep;55(9):2320-5
16348012
Plant Cell. 2008 Mar;20(3):614-34
18364468
Plant Physiol. 2003 Mar;131(3):1468-78
12644696
PLoS Biol. 2006 Jul;4(7):e226
16787107
Proc Natl Acad Sci U S A. 2007 Feb 13;104(7):2169-74
17287344
Curr Opin Plant Biol. 2004 Oct;7(5):589-98
15337103
Plant Physiol. 2001 Nov;127(3):1287-98
11706207
New Phytol. 1991 Jun;118(2):289-294
33874171
New Phytol. 2008;178(1):177-188
18208473
Nature. 2005 Jun 9;435(7043):824-7
15944706
Plant Physiol. 1994 Nov;106(3):1131-1136
12232395
Appl Environ Microbiol. 1991 Feb;57(2):434-9
16348409
Mol Plant Microbe Interact. 2000 Jun;13(6):693-8
10830269
Plant Physiol. 1998 Apr;116(4):1279-88
9536044
Plant Physiol. 2003 Jul;132(3):1540-9
12857834
Int J Dev Biol. 2005;49(5-6):615-32
16096969
New Phytol. 2000 Sep;147(3):631-639
33862934
New Phytol. 2008;177(2):537-548
17995919