Premium
ULTRASTRUCTURAL ASPECTS OF EARLY STAGES IN COTTON FIBER ELONGATION
Author(s) -
Ramsey J. C.,
Berlin J. D.
Publication year - 1976
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1976.tb11879.x
Subject(s) - vacuole , endoplasmic reticulum , biology , nucleolus , ultrastructure , vesicle , anthesis , elongation , cell wall , fibril , botany , microbiology and biotechnology , membrane , biophysics , biochemistry , cultivar , nucleus , cytoplasm , materials science , ultimate tensile strength , metallurgy
Fine structural alterations associated with early stages of cotton fiber elongation in Gossypium hirsutum L. var. dunn 56 C occur rapidly following anthesis and appear to be correlated with the formation of the central vacuole, plasma membrane, and primary cell wall as well as with increased protein synthesis necessary for cell elongation. Association of dilated cisternae of the endoplasmic reticulum with the tonoplast suggests that the endoplasmic reticulum is involved in the formation of the central vacuole. Dictyosome involvement in both plasma membrane and primary cell wall formation was suggested from observations of similarities between dictyosome associated vesicles, containing fibrils appearing similar in morphology to fibrils found in the primary cell wall, and plasma membrane associated vesicles. The single nucleolus found in cotton fibers enlarges following anthesis, shows segregation of granular and fibrillar components by 1 day postanthesis, develops a large “vacuole,” thus appearing ring‐shaped, and occupies much of the nuclear volume by 2 days postanthesis. Prominent nucleoli were not observed in nuclei after 10 days postanthesis.