Possible involvement of CS-ACS1 and ethylene in auxin-induced peg formation of cucumber seedlings.

ABSTRACT:

Background and aims

Cucumber (Cucumis sativus) seedlings develop a peg on the concave side of the gravitropically bending transition zone between the hypocotyl and the root after seed germination. Peg initiation occurs in response to auxin when its levels in the concave side of the transition zone exceed a particular threshold through the graviresponse. Ethylene also plays an important role in peg formation, but its relationship to auxin in this event is not understood. Here, the role ethylene plays in auxin-induced peg formation is studied.

Methods

Peg formation of cucumber seedlings exposed to ethylene at different stages of growth or during exogenous auxin treatment was observed. In addition, ethylene evolution from the concave and convex sides of the transition zone was

SUBMITTER: Saito Y 

PROVIDER: S-EPMC4246792 | biostudies-literature | 2005 Feb

REPOSITORIES: biostudies-literature