The effect of pH and K+ on appressorium formation byUromyces appendiculatus urediospore germlings |
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| Affiliation: | 1. Department of Plant Pathology, Cornell University, New York State Agricultural Experiment Station, Geneva, New York 14456 USA;2. Boyce Thompson Institute, Cornell University, Ithaca, New York 14853 USA |
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| Abstract: | Uromyces appendiculatus germlings attached to a plastic surface and differentiating in response to contact with inductive ridges formed appressoria most efficiently in the pH range 5.5–6.5. Formation of appressoria was inhibited by increased concentrations of Ca2+ and K+. |
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