Altered membrane lipase expression delays leaf senescence.
A cDNA clone encoding a lipase that is up-regulated in senescing leaves and flower petals has been isolated by screening an expression library. The abundance of the lipase mRNA increases as flowers and leaves begin to senesce, and expression of the gene is also induced by treatment with ethylene. Transgenic Arabidopsis plants in which levels of the senescence-induced lipase protein have been reduced show delayed leaf senescence.
Thompson
J
J
Department of Biology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada. jet@sciborg.uwaterloo.ca
Taylor
C
C
Wang
T W
TW
D017360:Arabidopsis / Q000201:enzymology* / Q000235:genetics / Q000254:growth & development; D003001:Cloning, Molecular; D018076:DNA, Complementary; D018507:Gene Expression Regulation, Developmental; D015971:Gene Expression Regulation, Enzymologic; D018506:Gene Expression Regulation, Plant; D015723:Gene Library; D008049:Lipase / Q000235:genetics* / Q000378:metabolism; D018515:Plant Leaves / Q000502:physiology; D018547:Plant Stems / Q000502:physiology; D030821:Plants, Genetically Modified / Q000201:enzymology / Q000254:growth & development; D012333:RNA, Messenger / Q000235:genetics
D018076:DNA, Complementary; D012333:RNA, Messenger; D008049:Lipase