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Tagged mutagenesis and gene-trap in the moss, Physcomitrella patens by shuttle mutagenesis.
TLDR
A gene tagging and gene-trap system in P. patens is developed by using the shuttle mutagenesis technique, which has been used in the budding yeast, and 203 mutants with altered developmental or morphological phenotypes were obtained. Expand
Pollination biology in a lowland dipterocarp forest inSarawak, Malaysia. I. Characteristics of the plant-pollinator communityin a lowland dipterocarp forest.
TLDR
The dominance of social bees and beetles among pollinators is discussed in relation to the general flowering observed in dipterocarp forests of West Malesia and long-distance-specific pollinators were uncommon compared with the Neotropics. Expand
Infrafamilial Phylogeny of the Aquatic Angiosperm Podostemaceae Inferred from the Nucleotide Sequences of the matK Gene
TLDR
The matK phylogenetic analyses show that Podostemaceae are composed of two major clades that correspond to the subfamily Tristichoideae sensu stricto and Weddellina and thesubfamily Podostemoideae, and may suggest that the sub family perhaps originated in America and migrated to the Old World. Expand
Beetle pollination of Shorea parvifolia (section Mutica, Dipterocarpaceae) in a general flowering period in Sarawak, Malaysia.
TLDR
Observations of flower visitors and pollination experiments indicated that beetles (Chrysomelidae and Curculionidae, Coleoptera) contributed to pollination of S. parvifolia in Sarawak, and hand-pollination experiments and comparison of fruit set in untreated, bagged, and open flowers suggested that S.Parv ifolia was mainly outbreeding. Expand
Characterization of MADS homeotic genes in the fern Ceratopteris richardii.
TLDR
The lack of organ-specific expression of MADS genes in the reproductive structures of the fern sporophyte may indicate that the restriction of MadS gene expression to specific reproductive organs and the specialization of MADs gene functions as homeotic selector genes inThe flowering plant lineage were important in floral organ evolution. Expand
rbcL gene sequences provide evidence for the evolutionary lineages of leptosporangiate ferns.
TLDR
To compare competing classifications, DNA sequences of a chloroplast gene were obtained and phylogenetic trees were inferred by the neighbor-joining and the parsimony methods that provided insights concerning major general evolutionary trends in the leptosporangiate ferns. Expand
Impact of introduced honeybees, Apis mellifera, upon native bee communities in the Bonin (Ogasawara) Islands
TLDR
It is suggested that competition for nectar and pollen of the native flowers between honeybees and native bees favors honeybees on the disturbed islands, which are thoroughly invaded by alien nectariferous, sometimes aggressive, weedy plants. Expand
Growth requirements of hyperthermophilic sulfur-dependent heterotrophic archaea isolated from a shallow submarine geothermal system with reference to their essential amino acids.
TLDR
Three hyperthermophilic sulfur-dependent heterotrophs were isolated from a shallow submarine hydrothermal system at an inlet of Kodakara-jima island, Kagoshima, Japan and partial sequencing of the genes coding for 16S rRNA showed that the three isolates are closely related to the genus Thermococcus. Expand
Three pollination guilds and variation in floral characteristics of Bornean gingers (Zingiberaceae and Costaceae).
TLDR
The fact that gingers with diverse morphologies in a forest with high species diversity were grouped into only three pollination guilds and that the pollinators themselves showed low species diversity suggests that many species of rare understory plants have evolved without segregating pollinators in each pollination Guild. Expand
Phylogenetic position of Apis nuluensis of northern Borneo and phylogeography of A. cerana as inferred from mitochondrial DNA sequences
TLDR
The montane honeybee, Apis nuluensis, is adapted to the Mt. Kinabalu highlands of Borneo and it is shown that this honeybee may derive from an isolated population of honeybees that colonized Bornea during Plio-Pleistocene glaciations. Expand
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