Antheridiogenesis in the fern Pteris vittata. I. Photocontrol of antheridium formation |
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| Affiliation: | 1. Department of Plant Physiology and Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University in Krakow, Krakow, Poland;2. Malopolska Centre of Biotechnology, Jagiellonian University in Krakow, Krakow, Poland;1. Central Rice Research Institute, Cuttack 753006, Odisha, India;2. Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India |
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| Abstract: | When spores of the fern Pteris vittata are induced to germinate on water in the light, they develop solely a rhizoid. Upon addition of mineral salt medium and transfer into darkness they develop male gametangia directly at the spore. This precocious antheridiogenesis is inhibited by light. Ohytochrome and a blue-light photoreceptor are both involved in the control. Ions are required for the light-dependent inhibition of antheridia formation. It is concluded that spores are determined generatively while light inhibits the generative tendency and promotes the vegetative development. |
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