Poster Title

Regulation of pollen tube growth in Petunia hybrida by ethylene-induced esterase activity

Co-Author(s)

Blake Baxter

Research Mentor(s)

Gerry Prody, Anu Singh-Cundy

Affiliated Department

Chemistry

Sort Order

38

Start Date

14-5-2015 10:00 AM

End Date

14-5-2015 2:00 PM

Document Type

Event

Abstract

Ethylene is a ubiquitous hormone that regulates a variety of functions in plant tissues. It is believed that a burst of ethylene during pollination is responsible for an enzymatic cascade that allows the growth of the pollen tube. Specifically, ethylene induces the deesterification of the cell-wall carbohydrate pectin, which allows its degradation by constitutively expressed pectinase enzymes. We show here that central tissues of Petunia pistils, through which the pollen tube develops, are preferentially deesterified following ethylene treatment.

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May 14th, 10:00 AM May 14th, 2:00 PM

Regulation of pollen tube growth in Petunia hybrida by ethylene-induced esterase activity

Chemistry

Ethylene is a ubiquitous hormone that regulates a variety of functions in plant tissues. It is believed that a burst of ethylene during pollination is responsible for an enzymatic cascade that allows the growth of the pollen tube. Specifically, ethylene induces the deesterification of the cell-wall carbohydrate pectin, which allows its degradation by constitutively expressed pectinase enzymes. We show here that central tissues of Petunia pistils, through which the pollen tube develops, are preferentially deesterified following ethylene treatment.