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Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. II. Light and Host Volatiles

Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. II. Light and Host Volatiles

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GOLD, Randall E., Kurt MENDGEN, 1983. Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. II. Light and Host Volatiles. In: Phytopathologische Zeitschrift. 108(3-4), pp. 281-293. ISSN 0931-1785. eISSN 1439-0434. Available under: doi: 10.1111/j.1439-0434.1983.tb00589.x

@article{Gold1983Activ-7211, title={Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. II. Light and Host Volatiles}, year={1983}, doi={10.1111/j.1439-0434.1983.tb00589.x}, number={3-4}, volume={108}, issn={0931-1785}, journal={Phytopathologische Zeitschrift}, pages={281--293}, author={Gold, Randall E. and Mendgen, Kurt} }

Mendgen, Kurt Gold, Randall E. The effects of light and host volatiles on teliospore germination in Uromyces appendiculatus var. appendiculatus were studied.<br />1. Light intensities ranging 15-26000 lux supported teliospore germination and basidiospore formation. The optimum light intensity was 17000 lux under the described conditions. Light-dark alternation was necessary for teliospore germination: no germination occurred under continuous light or continuous dark conditions. The process of teliospore germination, basidiospore formation, and basidiospore release followed a synchronous, rhythmic pattern of development. Teliospore germination was triggered by the phase change light --> dark (i.e. "light off"). Under long-day conditions basidiospore release exhibited a nocturnal periodicity with peak maxima occurring ~ 7 h after light was turned off.<br />2. Fifteen days after a 10 d exposure to host volatiles, 70-80 % of the treated spores germinated; minor increases in spore mortality were observed. Inoculations made with seedling-treated teliospores resulted in heavy pycnial infections.<br />3. The heat and seedling activation methods developed for teliospores of bean rust proved ineffective when applied to dormant teliospores from six other unrelated rust species. application/pdf eng Attribution-NonCommercial-NoDerivs 2.0 Generic 1983 Activation of Teliospore Germination in Uromyces appendiculatus var. appendiculatus. II. Light and Host Volatiles First publ. in: Phytopathologische Zeitschrift 108 (1983), pp. 281-293 2011-03-24T17:32:41Z 2011-03-24T17:32:41Z Gold, Randall E. Mendgen, Kurt

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