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Triazine herbicide interaction with a 32000 molecular weight thylakoid protein alternative possibilities






Plant Science Letters 25(1): 99-106

Triazine herbicide interaction with a 32000 molecular weight thylakoid protein alternative possibilities

Triazine herbicides inhibit photosynthesis by binding to thylakoids. In certain resistant plant biotypes the thylaloids are somewhat modified. The specific thylakoid binding site may not be a 32,000 MW protein. This 32,000 MW protein could be adjacent to the binding site. The azido-atrazine acts as a bifunctional reagent. A high-turnover 32,000 MW thylaloid protein from Spirodela [oligorrhiza] can be depleted specifically by incubation with low levels of chloramphenicol. Plants depleted of this 32,000 MW thylakoid protein were not more tolerant to atrazine, as might be expected if this protein bore the electrostatic herbicide binding site.


Accession: 006840793



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