Question

Effect of alpha amylase inhibitor inhibitor on blood cells

Answer 1

Protease inhibitors in plants: genes for improving defenses against insects and pathogens

Clarence A Ryan

Annual review of phytopathology 28 (1), 425-449, 1990

For several decades researchers have been studying the biosynthesis and regulation in plants of specific chemicals associated with defense against pests and pathogens. For years many of these chemicals were first considered to be" secondary plant compounds" with unknown functions. Many, if not most, of these" secondary compounds" are now considered to be defensive chemicals that are acting either alone or in concert to contribute to the resistances of plants against insects or pathogens (86, 87, 118, 144, 150). These defensive chemicals are found as either constitutive components in various plant tissues (118, 144) or are synthesized in response to attacking pests or pathogens (7, 32, 39, 45, 50, 60, 63, 64, 66, 74, 120, 144, 151, 178, 182). The inducible chemicals, which can also occur constitutively, include such complex sub stances as antibiotics, alkaloids, and terpenes, as well as proteins such as enzymes, enzyme inhibitors, and lectins. These chemicals have provided interesting systems for studying inducible plant defense. In various plants, they can be newly synthesized in response to pest and/or pathogen attacks, which generate inter-and intracellular signals to activate genes that code for their production. Many of these systems, therefore, are being studied to help further our fundamental knowledge about the biochemistry of signal genera-