(n.) The seed-bearing organ of a flower. It consists of an ovary, containing the ovules or rudimentary seeds, and a stigma, which is commonly raised on an elongated portion called a style. When composed of one carpel a pistil is simple; when composed of several, it is compound. See Illust. of Flower, and Ovary.
Example Sentences:
(1) Raised levels of atmospheric water cause a variety of responses in self-pollen, ranging from tube growth through the pistil to the ovary, to tubes inhibited at the stigmatic surface, accompanied by the formation of callose.
(2) When applied to sections of the pistil, these antibodies label the intercellular matrix in the stigma and transmitting tissue of the style and the cell walls in the epidermis of the placenta.
(3) We describe in this report the allelic diversity and gene structure of the S locus in Solanum tuberosum revealed by the isolation and characterization of genomic and cDNA clones encoding S-associated major pistil proteins from three alleles (S1, Sr1, S2).
(4) The label is transferred from pistil to pollen tubes apparently via the secretion products (exudate) of the pistil.
(5) The female S-locus gene products for two families showing different types of SI have been putatively identified as major pistil glycoproteins (the S-locus-specific glycoproteins of the Brassicaceae and the S-RNases of the Solanaceae).
(6) LAT52 mRNA is not detectable in pistils, sepals or non-reproductive tissues.
(7) The S-glycoproteins were expressed mainly in the upper part of the pistil and showed an increasing concentration during flower development.
(8) In situ hybridization experiments showed that at least one of these pistil-specific genes is specifically expressed in cells of the transmitting tissue.
(9) The structural events in the stigma and transmitting tissue of Petunia hybrida pistils that accompany compatible and incompatible intraspecific pollinations have been investigated in detail, together with the changes in reserve levels that also take place at this time.
(10) After pollination, the transcript levels of the pistil-specific extensin-like genes change relative to levels in unpollinated pistils.
(11) Compatible and incompatible pollen tubes growing on detached Lilium longiflorum pistils which had been prelabeled with myoinositol-U-(14)C take up a portion of the label and utilize it for biosynthesis of tube wall substance.
(12) The S2- and S3-alleles encode pistil-specific proteins of 30 kDa and 31 kDa, respectively, which were previously identified based on cosegregation with their respective alleles in genetic crosses.
(13) The maximal levels of 9612 RNA detected in anthers and vegetative organs were more than 50-fold and 250-fold lower than the level in pistils, respectively.
(14) The possible roles of the extensin-like proteins in pistils are discussed.
(15) A glycoprotein serologically related to the PR-2,N,O class is a (1,3)-beta-glucanase and is present in pistils.
(16) Here we report the characterization of a gene encoding another pistil ribonuclease of P. inflata, RNase X2.
(17) Double staining with sirofluor allows location of nuclei within pollen tubes grown in vitro, and when used after pollination enables the viewer to discriminate between nuclei within the pollen tube vs. nuclei of the pistil tissue.
(18) In the case of pistils, a pattern of labeling in ovary, style, and stigma is obtained which indicates that products of myoinositol metabolism are utilized in the biosynthesis of exudate (secretion product) of the stigma and style as well as for components of pistil cell walls.
(19) RNA gel blot hybridizations demonstrated the organ-specific expression of the extensin-like genes and their temporal regulation during pistil development.
(20) We have sought to identify pistil-specific genes that can be used as molecular markers to study pistil development.
Staminate
Definition:
(a.) Furnished with stamens; producing stamens.
(a.) Having stamens, but lacking pistils.
(v. t.) To indue with stamina.
Example Sentences:
(1) The olfactory marker protein is not present in the staminal cells of the olfactory neuroepithelium, and the protein may be regarded as indicative of the functional stage of the neurons.
(2) The effect studied was that of the induction of pink sectors in the otherwise blue staminal hairs of the flowers at low doses of radiation.
(3) A block of meiosis in spermatocyte arrest was associated with a degeneration of primary spermatocytes and with a reduced number of staminal spermatogonia.
(4) They do not rise from neural crests, and therefore are not apudomas, but from a staminal cell of the skin with neuroendocrine evolution.
(5) A significant degree of target cell lysis was obtained at an enzyme concentration that was ineffective on non-target cells and on myeloid staminal cells (CFU-GM).
(6) These results are discussed in the light of present knowledge of hematopoietic kinetics and of the relationships between antiblastic drugs and staminal hematopoietic compartments.
(7) The decreased number of red blood cells was the consequence of a complete, although reversible, blockade of staminal hematopoietic activity.
(8) CFW does not stain living mouse fibroblasts or trout red blood cells and stains only the cell walls in living cells from the epidermis of onion bulb scale, staminal hairs of Tradescantia, and longitudinal sections of broad bean stems and roots.