Localization of phytic acid in the floral structure of Petunia hybrida and relation to the incompatibility genes

In three clones of Petunia hybrida with different incompatibility genes, phytic acid is detected exclusively in pollen, stigma and style. These are all parts of the floral structure involved in the incompatibility reaction. Phytase activity was detected in these tissues as well as in the ovary. The...

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Bibliographic Details
Published in:Theoretical and applied genetics 1983-02, Vol.64 (3), p.259-262
Main Authors: Jackson, J.F, Kamboj, R.K, Linskens, H.F
Format: Article
Language:English
Subjects:
plant biochemistry
plant breeding
plant genetics
plant physiology
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Summary:In three clones of Petunia hybrida with different incompatibility genes, phytic acid is detected exclusively in pollen, stigma and style. These are all parts of the floral structure involved in the incompatibility reaction. Phytase activity was detected in these tissues as well as in the ovary. The level of phytic acid and phytase activity varied between clones with different S alleles. This difference was most evident in stigma and style. The pattern of phytic acid breakdown following pollination depends on whether pollen and style form a compatible or incompatible combination. Incompatible pollination results in a higher rate of degradation. Consideration is given to the relationship between breakdown of phytic acid to myo-inositol and cell wall thickening and plug formation, which occurs to a greater extent in the incompatible combination.
ISSN:0040-5752
1432-2242
DOI:10.1007/BF00303775