Department of Plant and Soil Sciences, University of Massachusetts, Amherst, Massachusetts 01002.
Plant Physiol. 1974 Feb;53(2):192-7. doi: 10.1104/pp.53.2.192.
The yellow-green 6 (yg(6)) mutation in tomato (Lycopersicon esculentum Mill.) is controlled by a single recessive gene with pleiotropic effects. The syndrome of characters associated with the mutation are enhanced stem elongation, reduced chlorophyll content and absence of detectable anthocyanins. We now have shown that the mutant also has fewer lateral roots than the wild type and higher l-phenylalanine ammonia-lyase (E.C. 4.3.1.5) activity than the normal tomato. These traits of the mutant closely resemble those induced in many plants by the application of gibberellic acid which suggests that the phenotypic expressions of the mutation might in some manner be related to the endogenous level or activity of the gibberellins. In support of this premise, data are presented which show that the characters of the mutant can be induced in the wild type tomato by application of gibberellic acid. Conversely, several traits of the wild type can be induced in the mutant by an inhibitor of gibberellin hiosynthesis, Phosfon. In addition, an embryoless barley half-seed bioassay for the gibberellins and gas-liquid chromatography indicated that the mutant contained at least three times as much total gibberellin as the wild type plant.
番茄（Lycopersicon esculentum Mill.）中的黄-绿 6（yg(6)）突变由一个单一的隐性基因控制，具有多种表型效应。与突变相关的表型特征包括茎伸长增强、叶绿素含量降低和无法检测到花青素。我们现在已经表明，突变体比野生型具有更少的侧根，并且比正常番茄具有更高的 l-苯丙氨酸解氨酶（E.C. 4.3.1.5）活性。这些突变体的特征与许多植物应用赤霉素诱导的特征非常相似，这表明突变的表型表达可能以某种方式与内源赤霉素的水平或活性有关。为了支持这一前提，我们提出的数据表明，应用赤霉素可以在野生型番茄中诱导突变体的特征。相反，赤霉素生物合成抑制剂 Phosfon 可以在突变体中诱导野生型的几种特征。此外，大麦半粒胚生物测定法和气相色谱法表明，突变体中总赤霉素的含量至少是野生型植物的三倍。
