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Negative phototropism in young gametophytes of the fern Schizaea pusilla

Plant, Cell & Environment, 1994
ABSTRACT Schizaea pusilla is a rare fern that occurs in acidic bogs and is one of the few fern species that maintains a filamentous gametophyte throughout its development. To expand our knowledge of the physiology of this fern, phototropic responses were examined in young gametophytes.
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Bimodal Polarotropism of Vaucheria to Polarized Blue Light: Parallel Polarotropism at High Fluence Rate Corresponds to Negative Phototropism

Journal of Plant Research, 2000
(Xanthophyceae) exhibited cruciform polarotropism when they were grown under polarized white or blue light for several days. The coexistence of two groups of branches growing perpendicular and parallel to the electric vector (E-vector) resulted in cruciform polarotropic orientation. Such polarotropic bending was, however, not detected within 24 hr.
Hironao Kataoka, Fumio Takahashi, Tamotsu Ootaki +2 more
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Negative Phototropism in the Rhizoid of Bryopsis plumosa