A phytochrome from the fern Adiantum with features of the putative photoreceptor NPH1

In plant photomorphogenesis, it is well accepted that the perception of red/far-red and blue light is mediated by distinct photoreceptor families, i.e., the phytochromes and blue-light photoreceptors, respectively. Here we describe the discovery of a photoreceptor gene from the fern Adiantum that encodes a protein with features of both phytochrome and NPH1, the putative blue-light receptor for second-positive phototropism in seed plants. The fusion of a functional photosensory domain of phytochrome with a nearly full-length NPH1 homolog suggests that this polypeptide could mediate both red/far-red and blue-light responses in Adiantum normally ascribed to distinct photoreceptors.

Chloroplast-Avoidance Response Induced by High-Fluence Blue Light in Prothallial Cells of the Fern Adiantum capillus-veneris as Analyzed by Microbeam Irradiation1

Chloroplast movement was induced by partial cell illumination using a high-fluence blue microbeam in light-grown and dark-adapted prothallial cells of the fern Adiantum capillus-veneris. Chloroplasts inside the illuminated area moved out (high-fluence response [HFR]), whereas those outside moved toward the irradiated area (low-fluence response [LFR]), although they stopped moving when they reached the border. These results indicate that both HFR and LFR signals are generated by high-fluence blue light of the same area, and that an LFR signal can be transferred long-distance from the beam spot, although an HFR signal cannot. The lifetime of the HFR signal was calculated from the traces of chloroplast movement induced by a brief pulse from a high-fluence blue microbeam to be about 6 min. This is very short compared with that of the LFR (30–40 min; T. Kagawa, M. Wada [1994] J Plant Res 107: 389–398). These data indicate that the signal transduction pathways of the HFR and the LFR must be distinct.

Reconstruction and interpretation of Brittsia problematica D. White (Fern, Pennsylvanian) / Hermann W. Pfefferkorn --.

v.33:no.17(1976)

Ferns and fern allies of Guatemala. Robert G. Stolze.

n.s. no.12(1983)

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v.1 (1909-1912)

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v.2 (1912-1915)

Handbook of the fern-allies: a synopsis of the genera and species of the natural orders Equisetaceœ, Lycopodiaceœ, Selaginellaceœ, Rhizocarpeœ,

Photocopy.

Hah und Fern : von J. Ludw. Heiberg ; aus dem ... von G. Jacke.

Texto impreso en letra gótica.

The "Fern ledges", Carboniferous flora of St. John, New Brunswick,

Mode of access: Internet.

The development of the ostrich fern, Onoclea struthiopteris.

Caption title.

The fern bulletin.

"A quarterly devoted to ferns."

Fernwort papers presented at a meeting of fern students, held in New York city, June 27, 1900, under the auspices of the Linnaean fern chapter ... .

Cover title.

Papers presented at the Boston meeting, under the auspices of the Linnaean Fern Chapter, August 24, 1898.

Cover title.

Taxonomy of specimens of the Pennsylvanian age Marattialean fern Psaronius from Ohio and Illinois/

Bibliography: p. 61-64.

Untersuchung über den Begriff und die Gesetze der Geschichte, über die vorgeblichen Mythen im ersten Buche Mosis : und über Offenbarung und Heidenthum, als Einleitung in die Geschichte des menschlichen Geschlechtes, in so fern sie Geschichte der Völker der alten Welt ist /

Mode of access: Internet.