We screened a phage display peptide library for peptidyl mimotopes of gibberellin against anti-bioactive gibberellin antibody. The peptides obtained were grouped into two homologous sequences and their binding to the antibody was put in competition with free GA(4) but not with GA(4) methylester, suggesting that the peptides behave as mimics of GA(4). As an application, the phage display peptide...

Floral buds were induced either by 8 h photoperiods or by the application of GA3 and GA13 in Impatiens bahamina. Total enzyme activity was not directly related to floral morphogenesis although some interesting qualitative correlations existed. Thus, the presence of a new isoenzyme of amylase {Rp 0-05) may be related to flower formation since it was present only in the induced plants and not in ...

The endogenous gibberellin (GA) and abscisic acid (ABA) contents as an effect of different application times of jasmonic acid (JA) in chard seedlings exposed to salt stress were investigated. Endogenous ABA content was increased by JA treatment after NaCl treatment, rather than after JA application before NaCl treatment. JA application after NaCl treatment caused higher ABA content than treatme...

Several compounds closely related to choline and of the structure CHoX-CHo-N+ (CH3)3 * Clare active as plant growth substances when X is a Cl, Br, or = CH2 group (14). Treated plants develop thicker stems, shorter internodes, and intensely dark green leaves (7, 16, 17). The growth changes simulate those caused by exposure of plants to high light intensities, a short photoperiod, and low tempera...

In order to evaluate the effects of priming materials and duration of priming on the seed physiological enhancement and biochemical traits of germination in pumpkin seeds a factorial experiment was conducted based on a completely randomized design with three replications at the University of Mohaghegh Ardabili. Treatments were priming with water, NaCl (3%), gibberellic acid (20 mg L-1), and asc...

Crop yield is the ultimate manifestation of all physiological changes crops and external environmental influence. A controlled study was conducted to investigate effects exogenous gibberellin on morphological characteristics formation sesbania pea grown in saline soils. Seeds were presoaked with four levels Gibberellin (GA3) solutions (0, 202.1, 404.2 606.3 µM) for 6 h, then manually direct-sow...

CHD3 is one of the chromatin-remodeling factors that contribute to controlling the expression of genes associated with plant development. Loss-of-function mutants display morphological and growth defects. However, the molecular mechanisms underlying CHD3 regulation of plant development remain unclear. In this study, a rice CHD3 protein, CHR729, was identified. The corresponding mutant line (t48...