Journal article

Publication year: 1999

Pages: 206-210

Journal: Journal of applied botany = Angewandte Botanik

Volume number: 73

Issue number: 5-6

ISSN: 0066-1759

Publisher: Blackwell

Abstract: 

Cells of meristematic regions of the shoot apex of carrot seedlings and of callus cultures exhibit overall architectural similarities with regard to structure of organelles and other cytoplasmic components. Densely staining bodies presumably proplastids were found in all of these cells.

The development of plastids appeared to be synchronous in shoot meristems, but relatively less synchronization in callus cultures was observed. Moreover the callus cultures apparently have developmental pathways leading from chromoplasts (contained in original explants) through amyloplasts or directly from amyloplasts into chloroplasts, besides the usual developmental process of chloroplasts from proplastids. This may account for differences observed in these two meristematic zones as well as for the occurrence of some further developed plastids in meristematic callus culture cells. Besides this, unlike first leaves, the callus cultures did not show the development of prolamellar bodies characteristic of etioplasts if cultured in the dark.

Harvard Citation style: Kumar, A. and Neumann, K. (1999) Comparative investigations on plastid development of meristematic regions of seedlings and tissue cultures of Daucus carota L., Journal of applied botany = Angewandte Botanik, 73(5-6), pp. 206-210

APA Citation style: Kumar, A., & Neumann, K. (1999). Comparative investigations on plastid development of meristematic regions of seedlings and tissue cultures of Daucus carota L.. Journal of applied botany = Angewandte Botanik. 73(5-6), 206-210.