Results 21 to 30 of about 419 (144)

Evidence for a gibberellin biosynthetic origin of ceratopteris antheridiogen. [PDF]

open access: yesPlant Physiology, 1989
The species-specific chemical messenger, antheridiogen A(Ce), mediates the differentiation of male gametophytes in the fern Ceratopteris. In order to investigate the biochemical origin of antheridiogen, the effect of the inhibitors, 2'-isopropyl-4'-(trimethylammoniumchloride)-5' -methylphenylpiperidine-1-carboxylate (AMO-1618), 2-chloroethyl ...
T. Warne, Leslie G. Hickok
semanticscholar   +3 more sources

Influence of water availability on gender determination of gametophytes in a diploid-polyploid complex of a xerophytic fern genus. [PDF]

open access: yesAoB Plants, 2015
Environmental sex determination (ESD) is present in several animal and plant lineages. Diverse factors such as temperature, light or water availability have been described as sex determinants in these organisms. Among plants, ferns frequently display ESD.
Pajarón S   +3 more
europepmc   +2 more sources

Plasticity of female reproductive resource allocation depends on the presence or absence of prior environmental sex determination in Ceratopteris richardii. [PDF]

open access: yesEcol Evol, 2018
In sexually labile plant species, abiotic environmental factors can influence expression of dimorphic gender, resulting in environmental sex determination (ESD). Ceratopteris richardii fern gametophytes have previously been shown to conditionally exhibit ESD, providing the opportunity to assess subsequent plasticity of reproductive resource allocation ...
Goodnoe TT, Hill JP.
europepmc   +2 more sources

Male to hermaphrodite sex change in gametophytes of the fern Ceratopteris richardii is affected by hermaphrodite density, male age, and male size [PDF]

open access: yes, 2021
Gametophytes of the fern Ceratopteris richardii are male or hermaphrodite. The presence of hermaphrodite-secreted antheridiogen influences gametophytes to develop as male (induction), while its absence leads to hermaphrodite development.
Bronder, Melissa   +2 more
core   +1 more source

DELLA proteins regulate spore germination and reproductive development in Physcomitrium patens

open access: yesNew Phytologist, Volume 238, Issue 2, Page 654-672, April 2023., 2023
Summary Proteins of the DELLA family integrate environmental signals to regulate growth and development throughout the plant kingdom. Plants expressing non‐degradable DELLA proteins underpinned the development of high‐yielding ‘Green Revolution’ dwarf crop varieties in the 1960s.
Alexandros Phokas   +8 more
wiley   +1 more source

An experimental assessment of competitive interactions between sexual and apomictic fern gametophytes using Easy Leaf Area

open access: yesApplications in Plant Sciences, Volume 10, Issue 2, March-April 2022., 2022
Abstract Premise Few studies have explored competition in fern gametophyte populations. One limiting factor is the tedious measurement of gametophyte size as a proxy for biomass in these small plants. Here, an alternative approach of estimating the number of green pixels from photos was employed to measure the competitive interactions among apomictic ...
Ondřej Hornych   +3 more
wiley   +1 more source

Gibberellins and Antheridiogens in Prothallia and Sporophytes ofAnemia phyllitidis

open access: yesBioscience, Biotechnology, and Biochemistry, 1996
The following gibberellins (GAs) and antheridiogens were identified by their mass spectra and Kovats retention indices from combined gas chromatography-mass spectrometry of purified extracts of the prothallia and sporophytes of Anemia phyllitidis, a Schizaeaceous fern: a trace amount of GA9 (4-week-old prothallia); GA9, GA24, GA25, antheridic acid and ...
OYAMA, Naomi   +6 more
openaire   +3 more sources

The decision to germinate is regulated by divergent molecular networks in spores and seeds

open access: yesNew Phytologist, Volume 211, Issue 3, Page 952-966, August 2016., 2016
Summary Dispersal is a key step in land plant life cycles, usually via formation of spores or seeds. Regulation of spore‐ or seed‐germination allows control over the timing of transition from one generation to the next, enabling plant dispersal. A combination of environmental and genetic factors determines when seed germination occurs.
Eleanor F. Vesty   +14 more
wiley   +1 more source

Isolation and Identification of Antheridiogens in the Ferns, Lygodium microphyllum and Lygodium reticulatum [PDF]

open access: yesBioscience, Biotechnology, and Biochemistry, 2001
Antheridiogens in culture media of 6-week-old prothallia of two species of Schizaeaceous ferns, Lygodium microphyllum and Lygodium reticulatum, were analyzed by gas chromatography-mass spectrometry. In both species, the gibberellin A73 methyl ester (GA73-Me) was identified as the most abundant antheridiogen, and the methyl esters of GA9 and of several ...
Kurumatani, M   +6 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy