Treatment of plant tissues with gibberellic acid leads to increased levels of auxin and stem elongation in several plant species (7,13). Pretreatment of plant tisstues with ethylene is known to decrease levels of diffusible auxin (5, 10, 20) as well as cell elongation (3, 4). Recent evidence has indicated that a significant influence of gibberellin on auxin levels and growth processes is ithrou...

Nodulated soybean roots produced more ethylene and contained more 1-aminocyclopropane-1-carboxylic acid than uninoculated roots. Nodules produced more ethylene and contained more 1-aminocyclopropane-1-carboxylic acid per gram of material than roots. Almost all of the ethylene produced by the nodules was produced by the plant fractions of the nodules. Ethylene, at physiological concentrations, d...

ethylene as a plant hormone plays various functions in a variety of physiological phenomena including seed germination, root initiation on stem cutting, senescence and organs abscission. in our previous investigation, five rose genotypes were identified showing high-sensitivity or low-sensitivity to exogenous ethylene treatment. the purpose of this study was to evaluate the rooting capacity and...

The main object of this study is to investigate the effect of plant growth regulators on the prolongation of vase life of two kinds of cut carnation under normal and ethylene. Carnation is one of the most popular flowers that has a short life due to its sensitivity to ethylene. Also, the effect of plant growth regulators on several physiological traits under ethylene stress and normal condition...

Ethylene has been regarded as a stress hormone to regulate myriad stress responses. Salinity stress is one of the most serious abiotic stresses limiting plant growth and development. But how ethylene signaling is involved in plant response to salt stress is poorly understood. Here we showed that Arabidopsis plants pretreated with ethylene exhibited enhanced tolerance to salt stress. Gain- and l...

Citrus fruits infected with the fungus Penicillium digitatum substantially increase the production of the plant hormone ethylene. In this study, the regulation of ethylene biosynthesis in Citrus sinensis-infected fruits and its putative involvement in an active defence response against P. digitatum infection is examined. Ethylene production is demonstrated as being the result of the co-ordinate...

Ethylene is one of the simplest organic molecules with biological activity. Its effects on plant tissue are spectacular and commercially important (1, 2). This hydrocarbon gas is generally considered to be the fruit-ripening hormone (2, 3). Because of its effects on plant senescence, large losses of fruits and vegetables are incurred annually in the United States. The losses are much greater in...

The ethylene signal is transduced in plant cells via phosphorylation events. To identify protein kinases whose levels of expression are modulated by the plant hormone ethylene, we utilized a differential reverse transcriptase-polymerase chain reaction approach using mRNA extracted from ethylene-treated and untreated tobacco leaves. An ethylene-induced cDNA clone, PK12, encoding a protein kinase...

The phytohormone ethylene plays a crucial role in the production and accumulation of reactive oxygen species (ROS) in plants under stress conditions. Ethylene response factors (ERFs) are important ethylene-signaling regulators functioning in plant defense responses against biotic and abiotic stresses. However, the roles of ERFs during plant adapting to ROS stress have not yet been well document...

The plant hormone ethylene is involved in the regulation of a number of physiological and developmental processes and its role as a regulator of flower senescence is of particular economic importance in floriculture. The present review focuses on genetic control of flower senescence, particularly at the level of ethylene perception. Research in a number of flowering plants has indicated that fl...