The title to a seminar presentation by IC Gunsalus in 1973 was “Oxygen: An essential toxin”,
referring to the complex role that atmospheric dioxygen has in biology. The relatively simple …

The evolution of new genes to make novel secondary compounds in plants is an ongoing
process and might account for most of the differences in gene function among plant …

Some plant secondary metabolites are classified as phytoanticipins. When plant tissue in
which they are present is disrupted, the phytoanticipins are bio-activated by the action of β …

Four crosses were made between inbred Cannabis sativa plants with pure cannabidiol
(CBD) and pure Δ-9-tetrahydrocannabinol (THC) chemotypes. All the plants belonging to the …

Many cereals accumulate hydroxamic acids derived from 2-hydroxy-2 H-1, 4-benzoxazin-3
(4 H)-one. These benzoxazinoid hydroxamic acids are involved in defense of maize against …

▪ Abstract Tree killing bark beetles and their vectored fungal pathogens are the most
destructive agents of conifer forests worldwide. Conifers defend against attack by the …

The allelopathic potency of rye (Secale cereale L.) is due mainly to the presence of
phytotoxic benzoxazinones—compounds whose biosynthesis is developmentally regulated …

Cytochrome P450 monooxygenases (P450s) are integral in defining the relationships
between plants and insects. Secondary metabolites produced in plants for protection against …

Allelopathic activity of wheat (Triticum aestivum L.) has previously been associated with the
production of phenolic acids and flavonoids (PAF), benzoxazinones (BXZs) and …

Cytochromes P450 of the CYP79 family catalyze the conversion of amino acids to oximes in
the biosynthesis of glucosinolates, a group of natural plant products known to be involved in …