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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: Curr Opin Plant Biol. 2008 Oct 30;11(6):662–671. doi: 10.1016/j.pbi.2008.10.002

Table 1.

Lipid signaling: enzymes, messengers, and their mutant phenotype in root hair and pollen tube.

Enzyme substrate Product Messenger Mutant phenotype References
PI3K PI PI(3)P ROS short root haira 51
PI4K PI PI(4)P NO short, bulged, branched root hair 63
PI(4) P phosphatase PI(4)P PI - short, bulged, branched root hair 57
PI4PK PI(4)P PK(4,5)P2 ABPs reduced tip growth in pollen tube and root hair 59, 60
PLC PI(4,5)P2 DAG - -
IP3 Ca2+ flux reduced tip growth in pollen tube b 64
a

phenotype produced by overexpression of FYVE domain

b

phenotype induced by PLC inhibitor, U-73343