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Adjuvant activity of pollen grains
Allergy, 2005Background: The induction of an immune response to a biologically inert soluble protein requires an adjuvant. Here we have examined whether intact grains of pollen display such adjuvant effect, accounting for the immunogenic activity of pollen protein allergens that are devoid of intrinsic pro‐inflammatory/adjuvant property.Methods: Human monocyte ...
Z, Allakhverdi +3 more
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Haploid Plants from Pollen Grains
Science, 1969A method is presented by which hundreds of haploid plants of various species of Nicotiana can be raised from pollen grains. Stamens should be excised when pollen grains have been individualized, but are still uninucleate and free of starch.
J P, Nitsch, C, Nitsch
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Automatic Pollen Grains Counter
2019 3rd International Conference on Bio-engineering for Smart Technologies (BioSMART), 2019This paper deals with the problem of counting the amount of pollen grains (density of pollen) in a view acquired on a daily basis by a dedicated device. The grains are stuck on a ribbon which is analyzed by a microscope. This task is currently performed by a human operator who has to analyze quite 300 microscopic slides representing 10% of the ribbon ...
Kadaikar, Aysha +8 more
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Pollen Grain Classification Challenge 2020
2021This report summarises the Pollen Grain Classification Challenge 2020, and the related findings. It serves as an introduction to the technical reports that were submitted to the competition section at the 25th International Conference on Pattern Recognition (ICPR 2020), related to the Pollen Grain Classification Challenge.
Sebastiano Battiato +7 more
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Plant Systematics and Evolution, 2000
My objective is the examination of selective forces that affect pollen number. Relationships among other floral traits of animalpollinated plants, including pollen size, stigma area and depth, and the pollen-bearing area of the pollinator may affect pollen number and also provide a model to examine how change in one trait may elicit change in other ...
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My objective is the examination of selective forces that affect pollen number. Relationships among other floral traits of animalpollinated plants, including pollen size, stigma area and depth, and the pollen-bearing area of the pollinator may affect pollen number and also provide a model to examine how change in one trait may elicit change in other ...
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Cytoplasmic Dimorphism within Pollen Grains
Nature, 1963MATURE pollen grains contain a vegetative nucleus and either a generative nucleus or two sperm nuclei (derived by mitotic division of the generative nucleus). It has been generally accepted that the generative nucleus has an associated cytoplasm containing basic cell organelles1,2 and is separated from the vegetative cell cytoplasm by plasma membranes.
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Germination Schedules of Pollen Grains: Implications for Pollen Selection
Evolution, 1989Temps de germination d'un ensemble de grains de pollen chez Erythronium grandiflorum en fonction de la densite des grains etudies en relation avec la selection pendant la croissance du tube ...
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Pollen grains have very rich pharmaceutical, ethnomedicinal and/or nutritional properties. Pollen and its matrices like honey, bee bread, and bee wax are used for the treatment of wound, drug development, drug delivery, as food supplement and in the cosmetics industry.
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1984
The pollen grain is the carrier of the male gametes or their progenitor cell, in higher plants. In a single unit, each grain contains all the genetic information required to specify an entire haploid plant organism (for example, pollen embryoids in tissue culture), or to unite with the female gamete at fertilization and form a diploid zygote and, hence,
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The pollen grain is the carrier of the male gametes or their progenitor cell, in higher plants. In a single unit, each grain contains all the genetic information required to specify an entire haploid plant organism (for example, pollen embryoids in tissue culture), or to unite with the female gamete at fertilization and form a diploid zygote and, hence,
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Quantification of pollen solute release using pollen grain column chromatography
Allergy, 1992The impact of pollen on the respiratory mucosa was modeled by studying the process by which solutes are eluted from pollen grains. Rye grass (Loliuin perenne), short ragweed (Ambrosia artemisiifolia), and white oak (Quercus alba) pollens were packed between glass wool plugs in small columns.
J N, Baraniuk +3 more
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