The Role of Phospholipase Dζ2 in Response to Phosphate Starvation in Rice
In this study, the role of phospholipase Dζ2 (PLDζ2) in response to phosphate starvation was ana-lyzed through genetic mutation of PLDζ2 gene in rice (Oryza sativa). The result shows that the transcript level of ricePLDζ2was largely induced by phosphate starvation. Loss of PLDζ2 resulted in growth inhibition; the root length of thepldζ2-1 mutant was 58% of wild type (WT), and root volume of thepldζ2-1 mutant was 40% of WT under phosphate starvation condition. PLDζ2 activity of thepldζ2-1 mutant was less than that of WT when plants were grown under phosphate starvation condition. The transcript levels of genes, such as phos-phatidic acid phosphohydrolase 1 (PAH1) and monogalactosyldiacylglycerol synthase 2 (MGD2) genes involved in galactolipid synthesis, were signiifcantly reduced in thepldζ2-1 mutant compared with WT in response to phosphate starvation. The results suggest that rice PLDζ2 plays a positive role in growth regulation under phosphate starvation condition.
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万方数据
维普
