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haustorium
(redirected from haustoria)

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haustorium

Specialized organ produced by a parasitic plant or fungus that penetrates the cells of its host to absorb nutrients. It may be either an outgrowth of hyphae (see hypha), as in the case of parasitic fungi, or of the stems of flowering parasitic plants, as in dodders (Cuscuta). The suckerlike haustoria of a dodder penetrate the vascular tissue of the host plant without killing the cells.



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It twines its way around plants and sends haustoria, which are rootlike structures, into your plants' vascular systems, sucking up water and minerals from your plants' xylem, and taking in sugars from your plants' phloem.
ABUNDANCE OF DEER, DODDER POSE PROBLEMS FOR GARDENERS by Daily News (Los Angeles, CA)
The researchers report that a Striga root tip releases an enzyme that they think diffuses through the soil and reacts with a sorghum root to form another quinone compound, which in turn diffuses back toward the Striga root, where it triggers haustoria formation.
A predator plant's chemical radar by Weisburd, Stefi / Science News
These roots develop structures known as haustoria, which anchor themselves into the water and mineral conducting vessels of the tree.
THE HISTORY OF MISTLETOE: HERE'S A PRELUDE TO THAT KISS by Daily News (Los Angeles, CA)
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