Blogs home Dangerous Ideas

A creepy plant

Today I went out to Baker wetlands to take pictures and found this totally creepy plant-Dodder. This is a parasitic plant that no longer has chlorophyll. Instead it gets its food by absorbing it from other plants. I had never seen this plant before so I was excited. At any rate the plant can be a nuisance, so I notified Dr. Boyd about this. However the Baker Wetland plant list lists three species of Dodder for the wetlands, so its not the first time Dodder has been in the wetlands.

dodder

When Dodder germinates, the young plant has around 5 days to find a host plant. The young plant is able to sense chemicals given off by other plants and will grow towards them.

Here's a video showing the germinating dodder seeking out a tomato plant:

Of course other plants detect and respond to airborne chemicals. In fact, a commonly used plant in genetics, Arabidopsis, has been genetically engineered to detect explosives used in land minds. The idea is to help clear land of left over land minds.

References

Host finding by Dodder: Science 29 September 2006: Vol. 313. no. 5795, pp. 1964 - 1967 http://www.sciencemag.org/cgi/content/abstract/313/5795/1964

Genetically Engineered plants for detecting land mines: http://www.nytimes.com/2004/12/12/magazine/12LAND.html