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Phytoncides are antimicrobial allelochemic [dubious – discuss] volatile organic compounds derived from plants.The word, which means "exterminated by the plant" [citation needed] (from the Greek φυτόν "plant" and the Latin caedere "to kill"), was coined in 1928 by Boris P. Tokin, a Soviet biochemist then studying at Moscow State University. [1]
Capsidiol is a phytoalexin produced by certain plants in response to pathogenic attack.. Phytoalexins are antimicrobial substances, some of which are antioxidative as well. They are defined not by their having any particular chemical structure or character, but by the fact that they are defensively synthesized de novo by plants that produce the compounds rapidly at sites of pathogen infection.
Antimicrobial use has been common practice for at least 2000 years. Ancient Egyptians and ancient Greeks used specific molds and plant extracts to treat infection. [5]In the 19th century, microbiologists such as Louis Pasteur and Jules Francois Joubert observed antagonism between some bacteria and discussed the merits of controlling these interactions in medicine. [6]
Phytochemicals are chemical compounds produced by plants, generally to help them resist fungi, bacteria and plant virus infections, and also consumption by insects and other animals. The name comes from Greek φυτόν (phyton) 'plant'. Some phytochemicals have been used as poisons and others as traditional medicine.
Plant defensins (formerly gamma-thionins) are a family of primitive, highly stable, cysteine-rich defensins found in plants that function to defend them against pathogens and parasites. [1] Defensins are integral components of the innate immune system and belong to the ancient superfamily of antimicrobial peptides (AMPs).
Green leaf volatiles (GLV) are organic compounds released by plants. [1] Some of these chemicals function as signaling compounds between either plants of the same species, of other species, or even different lifeforms like insects.
Defense-activating compounds can move cell-to-cell and systematically through the plant's vascular system. However, plants do not have circulating immune cells, so most cell types exhibit a broad suite of antimicrobial defenses.
[82] [87] Benefits to the host plant include their ability to assist in the production of antimicrobial compounds, detoxification, nutrient uptake, and growth-promoting activities. [45] Discerning the functions of symbiotic microbes in seeds is shifting the agricultural paradigm away from seed breeding and preparation that traditionally sought ...