Increase of free IAA in Solanum tuberosum tissues infected by Synchytrium endobioticum
1987
Schmidpeter, B. (Muenchen Univ., Weihenstephan (Germany, F.R.). Lehrstuhl fuer Botanik) | Fackler, U. | Hock, B. | Poschenrieder, G.
Potato tubers were artificially infected with Synchytrium endobioticum. The symptoms of wart disease, which are characterized as hypertrophied masses of host tissue, developed primarily in the region of sprouting eyes. The analysis of indole acid (IAA) by means of a solid-phase-enzyme-immunoassay showed significantly increased levels of free IAA in tumorous tissue as compared to corresponding parts of uninfected samples. Bound IAA was not detectable in either the infected of uninfected sprouting stems. The IAA content of tissue further distant from the infection site, such as the storage parenchyma from tubers, did not differ from uninfected samples. Storage parenchyma contained free and bound IAA. With respect to auxin, the fungus exerted a short range effect on its host
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