Ethylene propylene diene elastomers (EPDM) of various side chains and molecular weights were prepared as thin discs and the effects of electric field strength and temperature on the electromechanical properties were investigated. The electrical conductivity, the dielectric constant, the storage and loss moduli (G and G), the storage modulus response ( 1000V mm G  ), and the storage modulus ...

The hypothesis that ethylene participates in the regulation of root hair development by phosphorus availability in Arabidopsis thaliana was tested by chemically manipulating ethylene synthesis and response and with ethylene-insensitive mutants. Low phosphorus-induced root hair development could be mimicked by adding the ethylene precursor, 1-aminocyclopropane-1-carboxylate (ACC), to high phosph...

The consideration as to how plants uptake and transport phosphorus (P) is of significant agronomic and economic importance, in part driven by finite reserves of rock phosphate. Our understanding of these mechanisms has been greatly advanced, particularly with respect to the responses of plants to P deficiency and the genetic dissection of the signalling involved. Further, the realization that t...

It has been generally thought that in ethylene-sensitive plants such as carnations, senescence proceeds irreversibly once the tissues have entered the climacteric phase. While pre-climacteric petal tissues have a lower sensitivity to ethylene, these tissues are converted to the climacteric phase at a critical point during flower development. In this study, it is demonstrated that the senescence...

Rice is an important monocotyledonous crop worldwide; it differs from the dicotyledonous plant Arabidopsis in many aspects. In Arabidopsis, ethylene and auxin act synergistically to regulate root growth and development. However, their interaction in rice is still unclear. Here, we report that the transcriptional activation of OsEIL1 on the expression of YUC8/REIN7 and indole-3-pyruvic acid (IPA...

Initiation of abscission at the pedicel-fruit zone in the sour cherry (Prunus cerasus L. cv. Montmorency) occurs near the transition of Stage II to Stage III of fruit growth. The preinitiation phase is characterized by a high fruit removal force (FRF) and explants prepared from fruits during this period do not undergo abscission as indexed by a reduction in FRF. Ethylene does not cause a signif...

BACKGROUND The osmole gap is used routinely as a screening test for the presence of exogenous osmotically active substances, such as the toxic alcohols ethylene glycol and methanol, particularly when the ability to measure serum concentrations of the substances is not available. The objectives of this study were: 1) to measure the diagnostic accuracy of the osmole gap for screening for ethylene...

PREMISE OF THE STUDY To reach favorable conditions for photosynthesis, seedlings grow upward when deprived of light upon underground germination. To direct their growth, they use their negative gravitropic capacity. Negative gravitropism is under tight control of multiple hormones. METHODS By counting the number of standing plants in a population or by real time monitoring of the reorientatio...