Haustorium
Haustorium is a specialized structure that is developed by parasitic plants, fungi, and lichens. It is used to absorb water and nutrients from the host organism. The haustorium penetrates the host's tissue and establishes a connection with the host's vascular system, allowing the parasite to feed off the host.
Structure and Function
The Haustorium is a specialized structure that is developed by parasitic plants, fungi, and lichens. It is used to absorb water and nutrients from the host organism. The haustorium penetrates the host's tissue and establishes a connection with the host's vascular system, allowing the parasite to feed off the host. The structure of the haustorium varies depending on the species of the parasite, but it generally consists of a penetrating organ that is capable of breaking through the host's tissue, and a feeding organ that is connected to the host's vascular system.
Development
The development of the haustorium is triggered by signals from the host organism. These signals can be chemical, physical, or both. Once the haustorium is fully developed, it begins to absorb water and nutrients from the host. The absorbed nutrients are then transported to the parasite's own tissues.
Types of Haustoria
There are two main types of haustoria: endophytic haustoria and ectophytic haustoria. Endophytic haustoria penetrate the host's tissue and establish a connection with the host's vascular system, while ectophytic haustoria remain on the surface of the host and absorb nutrients through the host's epidermis.
Role in Parasitism
The haustorium plays a crucial role in parasitism. It allows the parasite to feed off the host without killing it, which is beneficial for both the parasite and the host. The parasite gets a steady supply of nutrients, while the host is able to survive and continue to provide nutrients for the parasite.
See Also
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