CYTOCHEMICAL REACTIVITY OF POLLEN WALLS
نویسندگان
چکیده
منابع مشابه
Pollen sporoplasts: dissolution of pollen walls.
4-Methylmorpholine N-oxide monohydrate (MMNO.H(2)O), a potent solvent for polysaccharides, is an effective vehicle for release of membrane-enclosed male gametophytes (sporoplasts) from spore walls. This release occurs in minutes when pollen (Lilium longiflorum Thunb.) is suspended in a melt of MMNO.H(2)O at 75 degrees C. Continued heating at 75 degrees C leads to distintegration of the exine ;s...
متن کاملCross-reactivity between Parietaria pollen and beet.
Allergy to beet is very rare. Until now, only a few reports about asthma induced by inhaling the vapor of cooked beet have been published. We describe two patients with allergic rhinitis and positive skin prick tests to Parietaria and beet only. To investigate possible cross-reactivity between Parietaria pollen and beet, we performed laboratory assays that showed beet-specific IgE in the sera o...
متن کاملFIB-SEM: A new technique for investigating pollen walls
The typically distinctive and elaborate external structures and sculpturing of pollen grains have been widely used in the taxonomy and systematics of the flowering plants. The family Acanthaceae is a striking example, where the widely diverse external pollen grain morphology has proved useful in determining relationships between taxa. Detailed information for external pollen wall morphology has...
متن کاملAllergenicity and cross-reactivity of Russian olive pollen (Eleagnus angustifolia).
BACKGROUND The purposes of this study were: to determine the prevalence of sensitization and immunochemical characterization of Eleagnus angustifolia pollen (Russian olive) that belongs to the family Eleagnaceae. METHODS A total of 134 patients with rhinoconjunctivitis and/or asthma were studied. Its allergenicity, cross-reactivity with olive pollen and the presence of Ole e 1 and Ole e 4-lik...
متن کاملCytochemical Analysis of Pollen Development in Wild-Type Arabidopsis and a Male-Sterile Mutant.
Microsporogenesis has been examined in wild-type Arabidopsis thaliana and the nuclear male-sterile mutant BM3 by cytochemical staining. The mutant lacks adenine phosphoribosyltransferase, an enzyme of the purine salvage pathway that converts adenine to AMP. Pollen development in the mutant began to diverge from wild type just after meiosis, as the tetrads of microspores were released from their...
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ژورنال
عنوان ژورنال: Journal of Histochemistry & Cytochemistry
سال: 1973
ISSN: 0022-1554,1551-5044
DOI: 10.1177/21.1.73