(n.) The male organ of flowers for secreting and furnishing the pollen or fecundating dust. It consists of the anther and filament.
Example Sentences:
(1) Differential screening of a tomato cDNA library produced from pre-anthesis stamens resulted in the isolation of 25 cDNA clones that hybridized to probes made from stamen RNA and showed no hybridization to probes made from RNA of vegetative organs.
(2) In agamous-1, stamens to petals; in apetala2-1, sepals to leaves and petals to staminoid petals; in apetala3-1, petals to sepals and stamens to carpels; in pistillata-1, petals to sepals.
(3) Cells from immature stamen hairs of the spiderwort plant Tradescantia virginiana cv.
(4) Normal stamens exhibited the synthesis of many polypeptides not found in the mutant, from microspore mother cell to the preanthesis stages.
(5) In the families of flowering plants in which these organs occur, they are patterned with the sepals in the outermost whorl or whorls of the flower, with the petals next closest to the center, the stamens even closer to the center, and the carpels central.
(6) The normally predictable duration of metaphase in stamen hair cells from the spiderwort, Tradescantia virginiana, is shortened significantly by treatment during prometaphase with either ruthenium red or Bay K-8644.
(7) Anaphase in dividing guard mother cells of Allium cepa and stamen hair cells of Tradescantia virginiana consists almost entirely of chromosome-to-pole motion, or anaphase A.
(8) A model is presented which proposes both combinatorial and cross-regulatory interactions between the DEFA and GLO genes during petal and stamen organogenesis in the second and third whorls of the flower.
(9) In a search for putative target genes of deficiens, several stamen- and petal-specific genes were cloned that are expressed in wild type but not in the deficiensglobifera mutant.
(10) Petals develop in the third floral whorl rather than the normal stamens, and the cells that would normally develop into the fourth whorl gynoecium behave as if they constituted an ag flower primordium.
(11) Another beta-tubulin isotype, beta 4, appears in marked abundance in immature and mature stamens.
(12) Squa transcriptional activity persists through later stages of floral morphogenesis, with the exception of stamen differentiation.
(13) In that section of the bay visibly contaminated by the creek effluent, increases in stamen hair mutants, micronuclei, and chromosome aberrations were measured.
(14) Stamen hair cells from the spiderwort plant, Tradescantia virginiana, exhibit remarkably predictable metaphase transit times, making them uniquely suitable for temporal studies on mitotic regulation.
(15) Another experimental disruption of the relationship, accomplished by making minute wounds in the PPB site of mitotic cells in Tradescantia stamen hairs, is described.
(16) Quite simply, the bee gets covered in pollen, from the male part of the flower (the stamen), and deposit the grains on the female part (the stigma) of the next flower that they visit.
(17) The normal and mutant stamens had some common proteins, but certain proteins were either present or more enriched in one genotype than in the other.
(18) We describe a locus, SUPERMAN, mutations in which result in extra stamens developing at the expense of the central carpels in the Arabidopsis thaliana flower.
(19) In order to test whether this influences the initial, linear component in the dose-effect relations, a comparison was made between dose-response curves for pink somatic mutations in Tradescantia clone 02 stamen hairs following X and gamma irradiations.
(20) During stage 6, petal primordia grow slowly, whereas stamen primordia enlarge more rapidly.
Stigma
Definition:
(v. t.) A mark made with a burning iron; a brand.
(v. t.) Any mark of infamy or disgrace; sign of moral blemish; stain or reproach caused by dishonorable conduct; reproachful characterization.
(v. t.) That part of a pistil which has no epidermis, and is fitted to receive the pollen. It is usually the terminal portion, and is commonly somewhat glutinous or viscid. See Illust. of Stamen and of Flower.
(v. t.) A small spot, mark, scar, or a minute hole; -- applied especially to a spot on the outer surface of a Graafian follicle, and to spots of intercellular substance in scaly epithelium, or to minute holes in such spots.
(v. t.) A red speck upon the skin, produced either by the extravasation of blood, as in the bloody sweat characteristic of certain varieties of religious ecstasy, or by capillary congestion, as in the case of drunkards.
(v. t.) One of the external openings of the tracheae of insects, myriapods, and other arthropods; a spiracle.
(v. t.) One of the apertures of the pulmonary sacs of arachnids. See Illust. of Scorpion.
(v. t.) One of the apertures of the gill of an ascidian, and of Amphioxus.
(v. t.) A point so connected by any law whatever with another point, called an index, that as the index moves in any manner in a plane the first point or stigma moves in a determinate way in the same plane.
(v. t.) Marks believed to have been supernaturally impressed upon the bodies of certain persons in imitation of the wounds on the crucified body of Christ. See def. 5, above.
Example Sentences:
(1) Health information dissemination is severely complicated by the widespread stigma associated with digestive topics, manifested in the American public's general discomfort in communicating with others about digestive health.
(2) It is likely that many of the girls end up working in brothels, but due to the stigma of being a sex worker they will usually report they were forced into marriage.
(3) To feel like a useful human being without any stigma attached, without undue fears and pressures but with a sense of being needed and wanted, that is what life is all about.
(4) Prince Harry and the Duke and Duchess of Cambridge have enlisted a rapper, a Royal Marine and a Labour spin doctor to try to push stigma about discussing mental health beyond what they believe is a “tipping point” and into public acceptability.
(5) This stigma remains to the present and was observed to exist even among service providers: Low knowledge levels of patients on the causes of the disease on the one hand, and service providers on the cure, particularly on the use of Multiple Drug Therapy.
(6) The failure of this effort, along with the stigma against psychiatry has led to poor treatment of disturbed patients by primary care physicians.
(7) The stigma of having no brothers or sisters meant that any acting up was immediately dismissed with a caustic, “Well, he is an only child.” The subtext was that my parents had doted on me excessively, inflating my sense of importance.
(8) Patients react to the physical realities of the disease while experiencing the stigma and fear which society imposes on AIDS.
(9) She also warned over increasing stigma being shown toward Gypsies, Travellers and Roma struggling to find accommodation.
(10) Commonly there is a desire by girl learners to continue their education , especially their formal education, despite their pregnancy even when the barriers to returning to school imposed by their families or schools and social stigmas may not easily permit it.
(11) This article focuses on the management of stigma by methadone maintenance patients.
(12) The patients may find that a psychiatric diagnostic label is a stigma and has bad consequences.
(13) You take one aspect of someone or some group's behaviour and jump to far-reaching conclusions as to their mental state and inflict an unwarranted stigma upon them.
(14) Factor analysis yielded four indices: a) impact of disease (e.g., being a burden, loss of energy, loss of bowel control); b) sexual intimacy; c) complications of disease (e.g., developing cancer, having surgery, dying early); and d) body stigma (e.g., feeling dirty or smelly).
(15) The UCI should also pay more attention to medical issues in cycling and when Therapeutic Use Exemptions should be granted Words of warning Sanctioned riders should be used ‘as an educational tool’ to inform their peers about the dangers of doping through interviews, appearances, lectures and recorded messages pointing out the impact of doping on their lives, ‘the social stigma, financial impact, health effects and self-esteem issues’ Voice of the union The UCI should ‘facilitate the creation of a strong riders’ union … to give riders a collective voice particularly on issues of ownership, revenue sharing, the racing calendar and anti-doping.
(16) In essence, criminalisation leads to stigma, and stigma leads to harassment."
(17) The sequence is reported of a cDNA molecule homologous to an mRNA from stigma tissue of Brassica oleracea plants homozygous for the S5 self-incompatibility allele.
(18) It was really only when William Styron published Darkness Visible in 1990 that depression entered mainstream social discourse and began to lose its stigma (even growing into a badge of honour for a while).
(19) As part of UNAids’ Protect the Goal campaign to raise awareness of HIV and Aids during the World Cup in Rio, we explored whether tweets could be used to measure HIV-related stigma.
(20) Encopresis afflicts one in 100 children causing considerable stigma and parental concern.