|
|
|
|
|
|
|
|
|||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | |||||
Journal of Cell Science, Vol 12, 421-443, Copyright © 1973 by Company of Biologists
Submitted on June 13, 1972
1 Botany Department, Australian National University, P.O. Box 4, Canberra A.C.T., Australia
The release of wall-held materials from the pollen of ragweed (Ambrosia tenuifolia) and Cosmos bipinnatus on to the stigma surface has been followed. When fresh stigmas were viewed by scanning electron microscopy, a fluid material was observed coating pollen grains, pollen tubes and adjacent stigmatic papillae. This fluid contained pollen-wall antigens, including the allergen Antigen E, detected by immunofluorescence, and proteins, lipids and carbohydrates detected by cytochemical methods.
In Cosmos, the fate of the antigens was much the same after both compatible and incompatible matings. In incompatible matings, pollen tubes were blocked with a polysaccharide considered to be callose. Callose particles appeared on neighbouring stigmatic papillae, and adjacent stigmatic hairs accumulated callose internally. This reaction may be an important one for the incompatibility response.
Submitted on June 13, 1972
This article has been cited by other articles:
|
|
 |
|
  T. L Sage, M. V Price, and N. M Waser Self-sterility in Ipomopsis aggregata (Polemoniaceae) is due to prezygotic ovule degeneration Am. J. Botany, February 1, 2006; 93(2): 254 - 262. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N. R. Matheson and J. Travis Purification and Characterization of a Novel Peptidase (IImes) from Mesquite (Prosopis velutina) Pollen J. Biol. Chem., July 3, 1998; 273(27): 16771 - 16777. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. A. Bagarozzi Jr., R. Pike, J. Potempa, and J. Travis Purification and Characterization of a Novel Endopeptidase in Ragweed (Ambrosia artemisiifolia) Pollen J. Biol. Chem., October 18, 1996; 271(42): 26227 - 26232. [Abstract] [Full Text] [PDF]
|
|
