Binding of cAMP by an R subunit of PKA occurs in a cooperative fashion; i.e., binding of the first cAMP molecule to CNB-B lowers the Kd for binding of the second cAMP to CNB-A.

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#Id: 9755

#XL - R Botany

In Arabidopsis, a calmodulin-binding transcriptional

regulator called IQD1 mediates of defense responses against insect herbivory. IQD1 binds calmodulin, a major Ca2+-binding protein

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#XL - R Botany

JA initiates biosynthesis of defense proteins as a-amylase inhibitors. Most of these proteins interfere with the herbivore digestive system.

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#XL - R Botany

Plant species produce lectins, defensive proteins that bind to carbohydrates or carbohydrate-containing proteins.

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#XL - R Botany

Plant species produce cysteine protease, which disrupt the

peritrophic membrane that protects the gut epithelium of many insects.

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#XL - R Botany

Antidigestive proteins in plants are the proteinase inhibitors. Found in legumes, tomato, and other plants, these substances block the action of herbivore proteolytic enzymes

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Many plants release a specific bouquet of volatile organic compounds when attacked by insect herbivores. These volatiles can consist of compounds from all major pathways for secondary metabolites including terpenoids (mono- and sesquiterpenes), alkaloids (indole), and phenylpropanes (methyl salicylate), as well as green-leaf volatiles.