NO, as a signal molecule, can be formed from L-arginine by NO synthase. There are several isoforms of NOS, which serve as different functions. The one we found in caterpillar¢s saliva may have a defensive function during the interactions of herbivores and plants.
Species 1: Lepidoptera Noctuidae Helicoverpa zea (corn earworm, tomato fruitworm)
Keywords: Nitiric oxide, saliva
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