Petunia flowers pollinated. Day 0. Control on the left, transgenic on the right.
Day 3. Control on the left, transgenic on the right.
Transgenic, day 8, on the left. Transgenic, more than 8 days, on the right.
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 senescence, 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. (Figures below)
Petunia flowers pollinated. Day 0. Control on the left, transgenic on the right.
Day 3. Control on the left, transgenic on the right.
Transgenic, day 8, on the left. Transgenic, more than 8 days, on the right.