Results 91 to 100 of about 419 (144)
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Characterization and genetic analysis of antheridiogen-insensitive mutants in the fern Ceratopteris
Botanical Journal of the Linnean Society, 1988WARNE, T. R., HICKOK, L. G. & SCOTT, R. S., 1988. Characterization and genetic analysis of antheridiogen-insensitive mutants in the fern Ceratopteris. The pheromone antheridiogen mediates the differentiation of male gametophytes in the fern Ceratopteris.
Rodney Scott +2 more
exaly +3 more sources
Gametophyte culture in vitro and antheridiogen activity in Blechnum spicant
Plant Cell, Tissue and Organ Culture, 1997 Growth of Blechnum spicant gametophytes was optimal in MS liquid medium, a 16-h photoperiod, and it was unaffected by variation of the pH between 4.7 and 8.7. Antheridia were observed during all developmental stages of the gametophyte: filamentous, spatulate or cordate and their formation was induced by compounds excreted into the culture medium by ...
H. Fernández +3 more
semanticscholar +3 more sources
New Antheridiogen from the Fern Onoclea sensibilis
Science, 1969An antheridium-inducing hormone (antheridiogen) derived from the fern species Onoclea sensibilis (Polypodiaceae) is chromatographically distinct from the native antheridiogen of Pteridium aquilinum (Polypodiaceae). It also differs from the native antheridiogens of Lygodium japonicum and
Ulrich Naf
exaly +4 more sources
GENETIC ANALYSIS OF ANTHERIDIOGEN SENSITIVITY IN CERATOPTERIS RICHARDII
American Journal of Botany, 1987 The pheromone antheridiogen promoted the production of males in gametophyte populations of the fern Ceratopteris richardii. Two homozygous strains of this species exhibited markedly different sensitivities to the pheromone, resulting in populations with either high or low frequencies of males.
R. Scott, L. G. Hickok
semanticscholar +3 more sources
DIFFERENTIAL ANTHERIDIOGEN RESPONSE AND EVOLUTIONARY MECHANISMS IN CYSTOPTERIS
American Journal of Botany, 1985 It has been demonstrated that antheridiogens determine gametangial initiation in cultures of some homosporous fern gametophytes. Studies of natural populations have implicated these compounds as breeding system controllers. In Cystopteris , response to antheridiogen varied significantly among
C. Haufler, T. Ranker
semanticscholar +3 more sources
Biosynthesis of antheridic acid, the principal antheridiogen in Anemia phyllitidis
Phytochemistry, 1991 Abstract [ 2 H 2 ,]9,15-Cyclo-GA 9 and [ 2 H 2 ]3α-hydroxy-9,15-cyclo-GA 9 were fed to prothallia of the fern, Anemia phyllitidis . The metabolises from these feeds were subjected to full-scan GC-MS to confirm the conversion of [ 2 H 2 ]9,15-cyclo-GA 9 into [ 2 H 2 ]3α-hydroxy-9,15-cyclo-GA 9 and [ 2 H 2 ]antheridic acid, and of [ 2 H 2 ]3α ...
Tadayuki Yamauchi +9 more
semanticscholar +3 more sources
Antheridiogen and Natural Gametophyte Populations
American Fern Journal, 1990could control the sex expression of fern gametophytes was made in the laboratory. In 1950, Dopp published a paper in which he showed that old media or aquatic extractions from media containing female gametophytes of bracken (Pteridium aquilinum) induced antheridia formation in young gametophytes of its own species or those of the male fern (Dryopteris ...
J. Schneller, C. Haufler, T. Ranker
semanticscholar +2 more sources
INTERNATIONAL JOURNAL PLANT SCIENCES, 2012 S. Hollingsworth, E. Andrés, G. Greer
semanticscholar +2 more sources
Antheridiogen concentration and spore size predict gametophyte size in Ceratopteris richardii
Botany, 2012Michael T Ganger
exaly +2 more sources