This paper reports on the use of nanoporous Pt-TiO2 thin films coated onto magnetoelastic sensors for the detection of ethylene, an important plant growth hormone. Five different metal oxide coatings, TiO2, TiO2+ZrO2, TiO2+TTCN(1,4,7Trithiacyclononane)+Ag, SiO2+Fe, and TiO2+Pt, each having demonstrated photocatalytic activity in response to ethylene, were investigated for their ability to chang...

Flooding is a phenomenon that destroys many crops worldwide. During evolution several plant species evolved specialized mechanisms to survive short- or long-term waterlogging and even complete submergence. One of the plant species that evolved such a mechanism is Rumex palustris. When flooded, this plant species is capable to elongate its petioles to reach the surface of the water. Thereby it r...

The transcriptional regulation of a win2-beta-glucuronidase gene fusion in transgenic potato (Solanum tuberosum) plants by wounding and ethylene has been analyzed. In common with other genes that are expressed in response to mechanical or chemical stress, win2 is transcribed at the site of injury and also in distant undamaged parts of the wounded plant. Similar kinetics of induction and pattern...

Drought is the main abiotic factor limiting more than 70% of the arable land around the world. Ethylene, a plant hormone, has often been observed to increase under environmentally unfavorable conditions, resulting in abscission of leaves and fruiting forms and ultimately in yield reduction. Concerning cotton, however, the effects of water-deficit stress on ethylene production have been uncertai...

Use of Ethylene As described by Abeles (1973), interest in ethylene dates back to at least 1864, when Girarden reported that gas from gas lamps caused injuries and defoliation of trees. In 1901, Neljubov identified ethylene as a component of the illuminating gas. Crocker and Knight reported in 1908 that ethylene and illurninating gas induced same physiological responses in flowers. In 1912, Sie...

Plant growth is tightly controlled through the integration of environmental cues with the physiological status of the seedling. A recent study now proposes a model explaining how the plant hormone ethylene triggers opposite growth responses depending on the light environment.

Application of 4-amino-3,5,6-trichloropicolinic acid (picloram) to roots stimulated the production of ethylene in both mesquite [Prosopis juliflora (Swartz) DC. var. glandulosa (Torr.) Cockerell] and huisache [Acacia farnesiana (L.) Willd.] seedlings. Herbicide levels rose in tissues before we detected increased ethylene production. Rates of ethylene production by various parts of the plant par...

Cell expansion is crucial for plant growth. It is well known that the phytohormone ethylene functions in plant development as a key modulator of cell expansion. However, the role of ethylene in the regulation of this process remains unclear. In this study, 2,189 ethylene-responsive transcripts were identified in rose (Rosa hybrida) petals using transcriptome sequencing and microarray analysis. ...

Plant defense against pathogens depends on the action of several endogenously produced hormones, including jasmonic acid (JA) and ethylene. In certain defense responses, JA and ethylene signaling pathways synergize to activate a specific set of defense genes. Here, we describe the role of the Arabidopsis (Arabidopsis thaliana) APETALA2/ETHYLENE RESPONSE FACTOR (AP2/ERF) domain transcription fac...