INHIBITION OF CAROTENOID SYNTHESIS BY FLURIDONE AND NORFLURAZON
INHIBITION OF CAROTENOID SYNTHESIS BY FLURIDONE AND NORFLURAZON
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DOI：
10.1017/s0043174500049675
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发表时间：
1978-01-01
期刊：
影响因子：
2.5
通讯作者：
WATSON, CW
中科院分区：
文献类型：
--
作者：
BARTELS, PG;WATSON, CW
氟立酮{1-甲基-3-苯基-5-[3-（三氟甲基）苯基]-4（1H）-吡啶酮}和降氟草酮[4-氯-5-（甲氨基）-2-（α，α，.阿尔法三氟-间甲苯基）-3（2 H）-哒嗪酮]抑制小麦（Triticum aestivum L.）“Marvila”）幼苗，并导致无色类胡萝卜素前体、八氢番茄红素和六氢番茄红素的积累。脱氢反应后八氢番茄红素形成可能被抑制的除草剂。叶绿素积累在10 lx的光下生长的处理过的幼苗，但被破坏的幼苗照射16 kx的光。幼苗照射16 kx的光缺乏叶绿体核糖体和正常的超微结构，黑暗生长的幼苗含有质体核糖体和正常的叶绿体超微结构。叶绿体的破坏和叶绿素的损失是由于在处理的植物中缺乏类胡萝卜素，这通常会起到保护叶绿体免受光破坏的作用。
Fluridone {1-methyl-3-phenyl-5-[3-(trifluromethyl)phenyl]-4(1H)-pyridinone} and norflurazon [4-chloro-5-(methylamino)-2-(.alpha.,.alpha.,.alpha.-trifluoro-m-tolyl)-3(2H)-pyridazinone] inhibited carotenoid synthesis in wheat (Triticum aestivum L. ''Maricopa'') seedlings and caused the accumulation of colorless carotenoid precursors, phytoene and phytofluene. Dehydrogenation reactions following phytoene formation were probably inhibited by the herbicides. Chlorophyll accumulated in the treated seedlings grown under 10 lx of light but was destroyed in seedlings illuminated with 16 kx of light. Seedlings illuminated with 16 kx of light lacked chloroplast ribosomes and normal ultrastructure; dark grown seedlings contained plastid ribosomes and had normal etioplast ultrastructure. The disruption of the chloroplasts and loss of chlorophyll was due to the absence of carotenoids in the treated plants, which would normally act to protect the chloroplasts from photodestruction.