Results 11 to 20 of about 419 (144)
Antheridiogen response in Phanerophlebia and related fern genera
American Fern Journal, 1993 Antheridiogens are naturally-occurring plant products that act pheromonally to affect sexual expression in the gametophytes of some pteridophyte species.
G. Yatskievych
semanticscholar +5 more sources
Interpopulational Comparison of Dose-Mediated Antheridiogen Response in Onoclea sensibilis
American Fern Journal, 1999 -Intraspecific variation in antheridiogen response has been reported in several fern species. Here, we characterized and compared dose-mediated antheridiogen response among six populations spanning the range of Onoclea sensibilis, a species widely used ...
R. Stevens, C. Werth
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Gametophyte Development and Antheridiogen Activity in Thelypteris ovata var. lindheimeri
American Fern Journal, 1997 Gametophyte development was studied in Thelypteris ovata var. lindheimeri from spore germination to 48 days. Spores were sown aseptically onto the surface of agar-solidified mineral medium in multispore cultures.
J. E. Nester-Hudson +2 more
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BIOASSAY OF ANTHERIDIOGEN IN LYGODIUM JAPONICUM [PDF]
Development, Growth and Differentiation, 1975 Antheridia were induced by exogenously applied GA3 at concentrations between 10-6 and 3 × 10-4 M in very young filamentous protonemata of Lygodium japonicum grown in darkness; the longer the dark preculture of protonemata, the lower was the sensitivity of the protonemata to GA3 . Antheridial initials were discernible after 36 hr of GA3 treatment in the
K. Takeno, M. Furuya
semanticscholar +4 more sources
Identification of Antheridiogens in Lygodium circinnatum and Lygodium flexuosum [PDF]
Plant Physiology, 1996 Abstract Antheridiogens in two species of Schizaeaceous ferns, Lygodium circinnatum and Lygodium flexuosum, were analyzed by gas chromatography-mass spectrometry. In L. circinnatum, gibberellin A73 (GA73) methyl ester (GA73-Me), which had originally been identified in L.
T., Yamauchi +7 more
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, 2018 Spore germination and antheridiogen chemistry were studied in Anemia mexicana Klotzsch. Light and scanning electron microscopy were used to study the cell division pattern during germination and early gametophyte development. The spore cell undergoes two asymmetric divisions.
Nester, Joan
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Fern antheridiogen: Cancellation of a light-dependent block to antheridium formation
Developmental Biology, 1974 In the light (200 ft-c), prothalli of Onoclea sensibilis failed to form antheridia at any stage of development unless they were exposed to the antheridium-inducing hormone of Pteridium aquilinum (abbreviation: APt). If prothalli pregrown for 7 days in the light were transferred to near-darkness (ca.
U, Näf, J, Sullivan, M, Cummins
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Functions and Regulation of HAM Family Genes in Meristems During Gametophyte and Sporophyte Generations. [PDF]
Plant Cell EnvironABSTRACT A fascinating feature of land plants is their ability to continually initiate new tissues and organs throughout their lifespan, driven by a pool of pluripotent stem cells located in meristems. In seed plants, various types of meristems are initiated and maintained during the sporophyte generation, while their gametophytes lack meristems and ...
Geng Y, Xie C, Zhang C, Liu X, Zhou Y.
europepmc +2 more sources
Providing the missing links in fern life history: Insights from a phenological survey of the gametophyte stage. [PDF]
Appl Plant Sci, 2022 Abstract Premise The entire life cycle of ferns has been documented, yet their life histories are still poorly understood. In particular, the phenology of fern gametophytes remains largely unknown. To address this issue, we demonstrated a new ecological approach to explore the phenological link between spore release and gametophyte maturation within ...
Quinlan A +5 more
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Evolution of DELLA function and signaling in land plants. [PDF]
Evol Dev, 2021 DELLA protein evolution in land plants. DELLA protein‐encoding genes first appeared in the ancestor of land plants. There have been subsequent gene duplications in the vascular plant ancestor and in eudicot flowering plants, with gene losses in ferns and some flowering plant families.
Phokas A, Coates JC.
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