ISSN:
1615-6110
Keywords:
Angiosperms
;
Bromeliaceae
;
Tillandsia pallidoflavens
;
Microsporogenesis
;
organelle ultrastructure
;
plastids
;
periodic acid-thiocarbohydrazine-silver proteinate staining
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract InTillandsia pallidoflavens none of the organelles undergoes fundamental de- and redifferentiation during microsporogenesis. The plastids are amoeboid, exhibit complex internal structures and gradually start accumulating polysaccharides from meiotic prophase I onwards. These observations contradict reports for other taxa. The ultrastructure of mitochondria and dictyosomes, respectively, is more or less orthodox. The extensive ER, which is only poorly stained by standard methods was identified by image intensifiying techniques. The ribosomes are not only associated with the ER or occur as polyribosomes free in the cytoplasm, but can also form more or less dense clusters.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00937946
