How do plant cells differ from animal cells in making use of receptors and signaling strategies?
A.
Like animals, plants make extensive use of transmembrane cell-surface receptors—especially enzyme-coupled receptors to recognize the extracellular signal molecules that control their growth and development. The spindly weed Arabidopsis thaliana has hundreds of genes encoding receptor serine/threonine kinases.
B.
These are, however, structurally distinct from the receptor serine/threonine kinases found in animal cells .
C.
The plant receptors are thought to play an important part in a large variety of cell signaling processes, including those governing plant growth, development, and disease resistance.
D.
In contrast to animal cells, plant cells seem not to use RTKs, steroid-hormone-type nuclear receptors, or cyclic AMP, and they seem to use few GPCRs.