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Phosphatidylinositol (PtdIns) is an important lipid because it serves as a key membrane constituent and is the precursor of the inositol-containing lipids that are found in all plants and animals. It is synthesized from cytidine-diphosphodiacylglycerol (CDP-DG) and myo-inositol by PtdIns synthase (PIS). We have previously reported that two putative PIS genes from maize (Zea mays L.), ZmPIS and ZmPIS2...
A bHLH (basic helix-loop-helix domain) transcription factor involved in tolerance to Pi starvation was cloned from Zea mays with an RT-PCR coupled RACE approach and named ZmPTF1. ZmPTF1 encoded a putative protein of 481 amino acids that had identity with OsPTF1 in basic region. Real-time RT-PCR revealed that ZmPTF1 was quickly and significantly up-regulated in the root under phosphate starvation conditions...
Phosphatidylinositol-specific phospholipase C (PI-PLC) plays an important role in a variety of physiological processes in plants, including drought tolerance. It has been reported that the ZmPLC1 gene cloned from maize (Zea mays L.) encoded a PI-PLC and up-regulated the expression in maize roots under dehydration conditions (Zhai SM, Sui ZH, Yang AF, Zhang JR in Biotechnol Lett 27:799–804, 2005)....
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