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Plants/Animals common origin.

March 10, 2006

Sept 8 2004    Dov, in Science Forums.

Add this to "common Origin" :

Plants and animals share the building blocks and fundamental biochemistry that evolved before the two kingdoms presumably diverged from common single-celled ancestors. But with their radically different cell structures, plants and animals are thought to have pursued largely independent evolutionary routes.

Innate immunity turns out to involve strikingly similar mechanisms in both plants and animals. One can find resemblances in the receptors that recognize pathogenic components such as lipopolysaccharide, in the signaling systems that initiate responses through kinase cascades, and in the defense mechanisms, including reactive molecules such as nitric oxide.

There are both functional and genetic similarities between plant and animal innate immunity.


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