University of Wisconsin-Madison
The mechanical force that a single fungal cell or bacterial colony exerts on a plant cell may seem vanishingly small, but it plays a heavy role in setting up some of the most fundamental symbiotic relationships in biology. In fact, it may not be too much of a stretch to say that plants may have never moved onto land without the ability to respond to the touch of beneficial fungi, according to a new study led by Jean-Michel Ané, a professor of agronomy at the University of Wisconsin-Madison.
“Many people have studied how roots progress through the soil, when fairly strong stimuli are applied to the entire growing root,” says Ané, who just published a review of touch in the interaction between plants and microbes in the journal Current Opinion in Plant Biology. “We are looking at much more localized, tiny stimuli on a single cell that is applied by microbes.”
Specifically, Ané, Dhileepkumar Jayaraman, a postdoctoral researcher in agronomy, and Simon Gilroy, a professor of botany, studied how such a slight mechanical stimulus starts round one of a symbiotic relationship — that is, a win-win relationship between two organisms. Read Full Article »