Exine structure in Cecropia L. (Moraceae) pollen grains
نویسندگان
چکیده
منابع مشابه
Antihypertensive effect of Cecropia obtusifolia (Moraceae) leaf extract on rats.
A lyophilized aqueous leaf extract of Cecropia obtusifolia proved to be antihypertensive when intravenously administrated to conscious spontaneous hypertensive rats. Forty-five minutes after injection, the maximum fall in arterial pressure (-23.5% relative to preinjection values) was seen and recovery was not complete by the end of the 180 min observation period. The extract was also given to p...
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Cytochemical staining methods and immunofluorescence techniques have been used to follow the release of proteins, including the allergen Antigen E, from whole pollen of ragweeds (Ambrosia spp.) and Cosmos bipinnatus (Compositae). These proteins have been detected in 2 sites in the wall: in the inner cellulosic intine layer especially at the germinal apertures, and in the cavea and the cavities ...
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Exine, the outermost architecture of pollen walls, protects male gametes from the environment by virtue of its chemical and physical stability. Although much effort has been devoted to revealing the mechanism of exine construction, still little is known about it. To identify the genes involved in exine formation, we screened for Arabidopsis mutants with pollen grains exhibiting abnormal exine s...
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Sporopollenin is a physically robust and chemically resilient biopolymer that comprises the outermost layer of pollen walls and is the first line of defense against harsh environmental conditions. The unique physicochemical properties of sporopollenin increasingly motivate the extraction of sporopollenin exine capsules (SECs) from pollen walls as a renewable source of organic microcapsules for ...
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National Maize Improvement Center of China, Beijing Key Laboratory of Crop Genetic Improvement, MOE Key Laboratory of Crop Heterosis and Utilization (X.C., H.S., Z.D., W.J.), and Department of Vegetable Sciences, Beijing Key Laboratory of Growth and Developmental Regulation for Protected Vegetable Crops (S.Y.), China Agricultural University, Beijing 100193, China; State Key Laboratory of Plant ...
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ژورنال
عنوان ژورنال: Boletim IG-USP. Publicação Especial
سال: 1989
ISSN: 2317-8078,0102-6275
DOI: 10.11606/issn.2317-8078.v0i7p205-213