TEMPERATURE-INDUCED CHLOROPLAST RIBOSOME DEFICIENCY IN VIRESCENT MAIZE
TEMPERATURE-INDUCED CHLOROPLAST RIBOSOME DEFICIENCY IN VIRESCENT MAIZE
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DOI：
10.1093/oxfordjournals.jhered.a109913
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发表时间：
1984-01-01
影响因子：
3.1
通讯作者：
ELFMAN, B
中科院分区：
文献类型：
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作者：
HOPKINS, WG;ELFMAN, B
玉米(Z.mays L.)绿色突变体v16/v16的幼苗在低于25摄氏度的温度下生长时，表现出严重的黄化。C.缺绿叶，生长温度为20度。C，含有显然在发育早期被阻止的叶绿体。叶绿体的大小是完全发育的叶绿体的2/3，含有异常的类囊体体，似乎缺乏叶绿体核糖体。失绿叶片只含有微量的70S核糖体或23S和16S可塑性rRNA。V16/v16中叶绿体核糖体的缺失不是由于光破坏。对5个绿色突变体的调查表明，绿色性状的表达与温度诱导的叶绿体核糖体缺失之间存在很强的相关性。
Seedlings of the virescent mutant v16/v16 of maize (Z. mays L.) exhibit extreme chlorosis when grown at temperatures below 25.degree. C. Chlorotic leaves, grown at 20.degree. C, contain plastids that apparently were arrested at an early stage of development. Plastids are 2/3 the size of fully developed chloroplasts, contain aberrant thylakoids and appear deficient in plastid ribosomes. Chlorotic leaves contain only trace amounts of 70S ribosomes or 23S and 16S plastidic rRNA. Deficiency of chloroplast ribosomes in v16/v16 is not due to photodestruction. A survey of 5 virescent mutants establishes a strong correlation between expression of the virescent trait and temperature-induced chloroplast ribosome deficiency.