Australian Centre for Plant Functional Genomics publications

Permanent URI for this collection

Now showing 1 - 1 of 1

Metadata only
Expression of phytase in plants as a method of modifying plant productivity
(2001) Richardson, A.; Hayes, J.; Simpson, R.; Australian Centre for Plant Functional Genomics (ACPFG); Australian Centre for Plant Functional Genomics (ACPFG)
The present invention provides a method of modifying plant productivity comprising expressing in a plant cell, tissue or organ one or more genes capable of facilitating a plant's ability to utilise soil phosphorus, and, in particular, a phytase gene, wherein said phytase gene expresses a phytase polypeptide in secretable form. More particularly, the present invention provides a method of increasing plant productivity comprising expressing in the root of a plant an isolated nucleic acid molecule encoding a phytase polypeptide for a time and under conditions sufficient for said phytase to be secreted from the root. In a preferred embodiment of the invention the chemistry of the soil around the root is modified by the application of an organic acid. The invention also provides novel phytase-encoding genes; genetic constructs which are useful for performing the inventive method; and transgenic plants produced therewith having improved productivity compared to their otherwise isogenic counterparts.