Small molecules capable of uncoupling growth-defense in plants are currently not known. In this study, for the first time, semi-synthetic analogues of the phytohormone JA-Ile are employed to uncouple growth and defense responses in wild tobacco. The JA-Ile analogues are easily synthesized from inexpensive substrates via olefin metathesis.

taxus    is an endangered plant which is the only commercial source of paclitaxel, which is used for treatment of ovary and breast cancer. as production of this valuable drug is a destructive process, other alternatives should be considered for its sustainable production. plant tissue and cell culture is a promising method for production of secondary metabolites. in order to optimize yew callus...

to study the effect of some varying treatments including such environmental factors as temperature, moisture, and light as well as plant growth regulators on breaking dormancy of datura stramonium l. seeds, several experiments were conducted. seeds of datura stramonium l. possess full dormancy immediately following harvest. storing the seeds for 3 months (15 dec. 2005 to 15 march 2006) at room ...

background: ferula gummosa boiss. is a medicinal and economical plant belonging to apiaceae family. it is a native herb of iran and is in serious danger of extinction. objective: gamma irradiation is an environmental stress and can consider as a new tool to change the content of secondary metabolites in medicinal plants. the effect of gamma irradiation on phenolic content and radical scavenging...