Corpus ID: 4921854

Abscisic acid-induced microheterogeneity in phospholipid vesicles. A fluorescence study.

  title={Abscisic acid-induced microheterogeneity in phospholipid vesicles. A fluorescence study.},
  author={Tiziana Parasassi and Gelsomina De Stasio and Alberta Tomassini Miccheli and F Bruno and Filippo Conti and Enrico Gratton},
  journal={Biophysical chemistry},
  volume={35 1},
Changes in the thermal behavior of DMPC (dimyristoyl-L-phosphatidylcholine) and an equimolar mixture of DMPC and DMPE (dimyristoyl-L-phosphatidylethanolamine) induced by the plant hormone abscisic acid (ABA) have been investigated using fluorescent probes. The fluorescence decay of the hydrophobic probe 1,6-diphenyl-1,3,5-hexatriene (DPH) in these vesicles has been measured using frequency-domain fluorometry, and has been analyzed using both models of discrete exponential components and… Expand
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The sensitivity of Laurdan (6-dodecanoyl-2-dimethylaminonaphthalene) excitation and emission spectra to the physical state of the membrane arises from dipolar relaxation processes in the membraneExpand
Triacontanol and Jasmonic Acid Differentially Modulate the Lipid Organization as Evidenced by the Fluorescent Probe Behavior and 31P Nuclear Magnetic Resonance Shifts in Model Membranes
The generalized polarization of laurdan fluorescence indicated that JA enhances the degree of hydration in lipid bilayers to a larger extent than does TRIA, which was observed that TRIA and JA differentially modulated all parameters studied. Expand
Fluorescence lifetime distributions in membrane systems
A method is developed for the analysis of the decay of fluorescent membrane probes that can provide a quantity sensitive to membrane heterogeneity and examples of identification of the measured parameters with specific variables that affect membrane heterogeneity are illustrated. Expand
Tansley Review No. 120: Pathways to abscisic acid-regulated gene expression.
  • C. Rock
  • Medicine, Biology
  • The New phytologist
  • 2000
A cell-biological model of overlapping tissue-specific stress and developmental response pathways that integrate into responses mediated by ABA is emerged, and the large gaps in the understanding of complex regulatory networks such as ABA signalling can be best addressed by multidisciplinary, integrated approaches. Expand
Gating of water channels (aquaporins) in cortical cells of young corn roots by mechanical stimuli (pressure pulses): effects of ABA and of HgCl2.
It is concluded that inhibition is caused by the absolute value of intensities of water flow within the channels, which increased in proportion to the size of step changes in pressure. Expand
Cytohistochemical Analysis of Malus domestica Borkh. Seeds from Shedding and Nonshedding Fruits
The delayed and variable development of the embryos of seeds in shed fruits may be related to both the altered pattern of storage substances and their translocation to the embryo. Expand
Cytohistological and cytochemical features of the seeds of Malus domestica Borkh exposed to spring frosts
Golden Delicious trees, exposed to spring frost, showed the occurrence of seeds with white (W), spotted (S) and black (B) integuments, with a different distribution, amount and damage in shedding and non-shedding fruits at several times after anthesis. Expand
Abscisic Acid Signaling in Seeds and Seedlings Article, publication date, and citation information can be found at
Abscisic acid (ABA) regulates many agronomically important aspects of plant development, including the synthesis of seed storage proteins and lipids, the promotion of seed desiccation tolerance andExpand