The Composition of Stigmatic Exudate from Lilium longiflorum
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چکیده
منابع مشابه
A Calcium-Activated Phytase from Pollen of Lilium longiflorum.
A phytase was isolated and partially purified from the pollen of Lilium longiflorum Thumb. Optimum activity was at pH 8.0. The phytase was activated by Ca(2+) and Sr(2+) but not by the other divalent cations tested. Activity was inhibited by ethylenediaminetetraacetate. The phytase had a temperature optimum of 55 to 60 degrees C and an activation energy of about 12,700 calories/mole. Extraction...
متن کاملThe Nutritional Role of Pistil Exudate in Pollen Tube Wall Formation in Lilium longiflorum: II. Production and Utilization of Exudate from Stigma and Stylar Canal.
Detached pistils of Lilium longiflorum were labeled with d-glucose-U-(14)C 24 hours after anthesis and then sampled for the next 6 days to determine the appearance of label into exudate from the stylar canal and the stigmatic surface of the pistil. Results were obtained with unpollinated cv. Ace pistils and pollinated cv. Ace pistils, selfed or crossed (cv. Croft pollen). Limited data were also...
متن کاملCorrelation between the Accumulation of Stylar Canal Exudate and the Diminution of Self-incompatibility in Aging Flowers of Lilium longiflorum
Self-incompatibility in Lilium longiflorum cv. Hinomoto diminishes with aging of the flower. The relation between the diminished self-incompatibility of the aged flower and stylar canal exudate in Lilium longiflorum was studied. Carbohydrate content in stylar canal exudate increased with aging of the flower, indicating that it accumulated with time. During the aging process, the molecular weigh...
متن کاملCytoplasmic changes accompanying the female meiosis in Lilium longiflorum Thunb.
The events that accompany female meiosis in Lilium parallel almost exactly those characteristic of male cells. The megaspore mother-cell is first cut off from investing tissue by a callosic wall, and this isolated cytoplasm undergoes a phase of comprehensive dedifferentiation. Not only does the major part of the ribosome population appear to be removed from both the cytoplasm and plastids, but ...
متن کاملLocalization of Phosphorus and Cation Reserves in Lilium longiflorum Pollen.
Transmission electron microscopy of pollen from Lilium longiflorum Thunb. reveals electron-dense inclusions in storage body organelles ubiquitous in the cytosol. In ungerminated pollen, these inclusions are rounded in appearance and appressed to the inner surface of the smooth membrane of the storage body. During pollen germination, these inclusions become less rounded, smaller, and enclosed in...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1970
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.46.1.150