The plant phototoxins are excited by absorption of light to produce singlet oxygen or radicals which damage cell membrane systems and protein or nucleic acid molecules. The excited phototoxins have a very important role in plant defensive responses to viruses, bacterium,fungus,nematodes,and plants.
Liao Xiangru. Mechanisms of the Action of Plant Phototoxins[J]. Progress in Biochemistry and Biophysics,1995,22(5):420-422
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