STRUCTURAL AND ULTRASTRUCTURAL STUDY OF THE POLLEN GRAIN IN DATURA STRAMONIUM

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GHASEMPOOR H.; ALIASGHARPOOR M.; MOVAFAGHI A.; DADPOOR M. REZA; NASIRI SEMNANI SH.

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Journal: JOURNAL OF DEVELOPMENTAL BIOLOGY Year:2009 | Volume:1 | Issue:2 Page(s): 41-48

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Title

STRUCTURAL AND ULTRASTRUCTURAL STUDY OF THE POLLEN GRAIN IN DATURA STRAMONIUM

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Keywords

ULTRASTRUCTURALQ3

STRUCTURAQ3

POLLEN TUBEQ3

DATURA STRAMONIUMQ2

Abstract

Prefertilisation barriers on the stigma surface result in the arrest of pollen germination in to the stigma.The stigma is of the wet and papillate type The stigma in this species was classified as wet, papillated (GroupШ) and covered with sticky secretion.Interaction between pollen and the stigma surface initiate pollen germination.The extracellular matrix of stigma and stylar transmitting tissue, enriched with secretory materials, is the path for the POLLEN TUBE. In the present study STRUCTURAl and ULTRASTRUCTURAL pollen grain and POLLEN TUBE were investigated using feloresence and transmission electron microscopy and the details of pollen–stigma interaction. Electron density of secretory components after post-fixation with OsO4 and their capacity for staining with Auramine O revealed their lipoid nature. Pollen coat, consisting of clear lipid droplets embedded on the exine surface.The pollen grains had the exine wall with their layers already formed of lipid bodies.The deposit, which has similar osmiophilic propertiesto lipid.Thick diameters with a larger exine wall and theintin reached its maximaum size. Mitochondria and plastids are both STRUCTURAlly simple.Plastids and mitochondria also increase both in number and electron density.Cytoplasm is containing many small vessels, a large quantity of dictiosomes and endoplasmic reticulum. Electron dense droplets appeared in the cytoplasm and vacuoles. Furthermore, dense black aggregates were observed at the surface of the endoplasmic reticulum.

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APA: Copy

GHASEMPOOR, H., ALIASGHARPOOR, M., MOVAFAGHI, A., DADPOOR, M. REZA, & NASIRI SEMNANI, SH.. (2009). STRUCTURAL AND ULTRASTRUCTURAL STUDY OF THE POLLEN GRAIN IN DATURA STRAMONIUM. JOURNAL OF DEVELOPMENTAL BIOLOGY, 1(2), 41-48. SID. https://sid.ir/paper/193091/en

Vancouver: Copy

GHASEMPOOR H., ALIASGHARPOOR M., MOVAFAGHI A., DADPOOR M. REZA, NASIRI SEMNANI SH.. STRUCTURAL AND ULTRASTRUCTURAL STUDY OF THE POLLEN GRAIN IN DATURA STRAMONIUM. JOURNAL OF DEVELOPMENTAL BIOLOGY[Internet]. 2009;1(2):41-48. Available from: https://sid.ir/paper/193091/en

IEEE: Copy

H. GHASEMPOOR, M. ALIASGHARPOOR, A. MOVAFAGHI, M. REZA DADPOOR, and SH. NASIRI SEMNANI, “STRUCTURAL AND ULTRASTRUCTURAL STUDY OF THE POLLEN GRAIN IN DATURA STRAMONIUM,” JOURNAL OF DEVELOPMENTAL BIOLOGY, vol. 1, no. 2, pp. 41–48, 2009, [Online]. Available: https://sid.ir/paper/193091/en

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