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Metabolism of [2,5‐14c]piperazine in barley plants
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AbstractThe shoots of barley plants root‐treated with [2,5‐14C]piperazine were analysed 30 days after treatment. Methanol extraction left a solid residue which contained 31.9% of 14C (all percentages refer to the total of 14C incorporated into the shoots); further extraction with acidified methanol and dimethyl sulphoxide dissolved respectively 3.2% and 5.8% of 14C. The initial methanol extract contained radioactive piperazine (16.8%), iminodiacetic acid (8.6%), glycine (15.4%), oxalic acid (7.2%), and un‐identified compounds (20.1%). In barley, piperazine is the product of the most advanced metabolism so far identified of the fungicide triforine, 1,4‐bis(2,2,2‐trichloro‐1‐formamidoethyl)piperazine; the results obtained here show that piperazine is certainly not the end‐product of the metabolism of triforine in barley.
Title: Metabolism of [2,5‐14c]piperazine in barley plants
Description:
AbstractThe shoots of barley plants root‐treated with [2,5‐14C]piperazine were analysed 30 days after treatment.
Methanol extraction left a solid residue which contained 31.
9% of 14C (all percentages refer to the total of 14C incorporated into the shoots); further extraction with acidified methanol and dimethyl sulphoxide dissolved respectively 3.
2% and 5.
8% of 14C.
The initial methanol extract contained radioactive piperazine (16.
8%), iminodiacetic acid (8.
6%), glycine (15.
4%), oxalic acid (7.
2%), and un‐identified compounds (20.
1%).
In barley, piperazine is the product of the most advanced metabolism so far identified of the fungicide triforine, 1,4‐bis(2,2,2‐trichloro‐1‐formamidoethyl)piperazine; the results obtained here show that piperazine is certainly not the end‐product of the metabolism of triforine in barley.
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