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“phytoalexin”
phytoalexin
Any substance that is produced by plant tissues in response to contact with a parasite and specifically inhibits the growth of that parasite.
The term was originally defined with regard to fungal parasites only, but in 1956 it was extended to cover all parasites [According to the Oxford English Dictionary].
This entry is located in the following units:
alexo-, alex-, alexi-
(page 1)
phyto-, phyt-, -phyte
(page 12)