Can I read Cellular changes induced by exogenous and endogenous gibberellins in shoot tips of the long-day plant Silene armeria on EtoBox?

Cellular changes induced by exogenous and endogenous gibberellins in shoot tips of the long-day plant Silene armeria by Manuel Talon; Francisco R. Tadeo; Jan A. D. Zeevaart is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Cellular changes induced by exogenous and endogenous gibberellins in shoot tips of the long-day plant Silene armeria about?

Stem elongation and flowering are two processes induced by long-day (LD) treatment in Silene armeria L. Whereas photoperiodic control of stem growth is mediated by gibberellins (GAs), the flowering response cannot be obtained by GA applications. Microscopic observations on early cellular changes in the shoot meristem following LD induction or GA treatment in short days (SD) were combined with GA analyses of stem sections at various distances below the shoot apex. The earliest effects of both LD and GA induction on the subapical meristem were an increase in the number of cells per cell file and a reduction of cell length in the meristematic tissue approx. 1.0-3.0 mm below the shoot apex. Within 8 d after the beginning of LD induction or after GA application, the cells in the subapical meristem were oriented in long files. In induced tips, cellulose deposition occurred mostly in longitudinal walls, indicating that many transverse cell divisions had taken place which, in turn, increased the length of the stem. In contrast to LD induction, GA treatments did not promote the transition from the vegetative to the floral stage. Endogenous GAs were analyzed by selected ion monitoring (SIM),

Who reads Cellular changes induced by exogenous and endogenous gibberellins in shoot tips of the long-day plant Silene armeria?

Author

Manuel Talon; Francisco R. Tadeo; Jan A. D. Zeevaart

Publisher

Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0032-0935)

Published

1991

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)