Biological Systems: Open Access

ISSN - 2329-6577

44-7723-59-8358

Domenico Prisa

Domenico Prisa
Research Unit for the Nursery and the Management of Environmental and Ornamental Green,
Pescia (PT), 51017
Italy

Publications
  • Research Article
    Possible Role of Sphingolipids in Developmental Programmed Cell Death of Petunia Petals
    Author(s): Domenico Prisa and Gianluca BurchiDomenico Prisa and Gianluca Burchi

    A type of programmed cell death (PCD) in animals is due to lysosomal membrane permeabilisation or rupture. One of the suggested reasons is sphingolipid accumulation in the membrane. In plants many examples of PCD, including petal senescence, are due to vacuolar permeabilisation and rupture. Using Petunia flowers, we tested the effect on PCD of sphingolipids and of sphinglolipid synthesis inhibitors. Feeding flowers with five main sphingolipids (sphinganine, phytosphingosine, dihydroceramide, ceramide and sphingosine) hastened PCD. Feeding phytosphingosine together with silver thiosulphate, an inhibitor of ethylene perception, completely prevented the PCD-promoting effect of phytosphingosine, suggesting that its acts through ethylene. Feeding together with the reactive oxygen species scavenger N-acetylcysteine had no effect, while the scavenger ascorbic acid only had a slight alleviati.. View More»

    DOI: 10.4172/2329-6577.1000146

    Abstract PDF

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