A dominant mutant receptor from Arabidopsis confers ethylene insensitivity in heterologous plants.
Ethylene (C2H4) is a gaseous hormone that affects many aspects of plant growth and development. Ethylene perception requires specific receptors and a signal transduction pathway to coordinate downstream responses. The etr1-1 gene of Arabidopsis encodes a mutated receptor that confers dominant ethylene insensitivity. Evidence is presented here that etr1-1 also causes significant delays in fruit ripening, flower sensecence; and flower abscission when expressed in tomato and petunia plants. The ability of etr1-1 to function in heterologous plants suggests that this pathway of hormone recognition and response is highly conserved and can be manipulated.
Wilkinson
J Q
JQ
Ceregen Technology, Monsanto Company, Chesterfield, MO 63198, USA.
Lanahan
M B
MB
Clark
D G
DG
Bleecker
A B
AB
Chang
C
C
Meyerowitz
E M
EM
Klee
H J
HJ
D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics* / Q000502:physiology; D017124:Conserved Sequence; D018076:DNA, Complementary; D005030:Ethylenes / Q000378:metabolism / Q000494:pharmacology*; D005799:Genes, Dominant; D017343:Genes, Plant; D005818:Genetic Engineering / Q000379:methods; D018551:Solanum lycopersicum / Q000187:drug effects / Q000502:physiology; D010940:Plant Proteins / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D030821:Plants, Genetically Modified; D011956:Receptors, Cell Surface / Q000096:biosynthesis / Q000235:genetics / Q000502:physiology*; D015398:Signal Transduction
D018076:DNA, Complementary; D005030:Ethylenes; D010940:Plant Proteins; D011956:Receptors, Cell Surface; C083750:ethylene receptors, plant; C036216:ethylene