Drought-induced changes in acid phosphatase activities in wheat in relationship with phosphorus -

The effect of drought stress on changes in acid phosphatase (APase) activities inrelationship with phosphorus was studied in wheat embryos and endosperm. Drought stresswas imposed by withholding water irrigation to the 12 h germinated seeds. The tissues(embryos and endosperm) were separated and APase activity was estimated. After droughtstress, a significant increase in embryo and endosperm APase activity was observed. NativePAGEAPase activity also revealed a similar type of induction under stress conditions.Imposition of drought stress caused no significant change in phosphorous level inendosperm; however, a significant decrease in the embryos phosphorus level was observedafter 6 h of stress, indicating tissue specific key role of APase activity under drought stress inmaintaining Pi level.

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