拟南芥叶绿素缺失突变体中温度敏感表型可塑性的发生。
Occurrence of Temperature-Sensitive Phenotypic Plasticity in Chlorophyll-Deficient Mutants of Arabidopsis thaliana.
机构信息
Department of Biochemistry, University of Nebraska, Lincoln, Nebraska 68583-0718.
出版信息
Plant Physiol. 1992 Jan;98(1):392-4. doi: 10.1104/pp.98.1.392.
Abstract
A collection of 75 putative mutants with alterations in leaf pigmentation was visually selected from Arabidopsis thaliana plants (M(2) generation) grown at 26 degrees C from seeds treated with the mutagen ethylmethanesulfonate. Fifty-eight of the plants were found to have chlorophyll contents decreased by at least 10% from the parental Columbia ecotype. These plants were screened for chlorophyll content and the ratio of chlorophyll b/a after growth at 20 or 26 degrees C. Relative to the parental type, a significant number of individuals in which the chlorophyll-deficient phenotype was exacerbated at one of the growth temperatures were identified. We conclude that temperature-sensitive phenotypic plasticity for chlorophyll content is relatively common in mutant populations of higher plants.
摘要
从用诱变剂甲基磺酸乙酯处理过的种子在 26°C 下生长的拟南芥（M2 代）植株中，通过肉眼挑选出了 75 个可能发生叶片色素改变的突变体。其中 58 株的叶绿素含量比亲本哥伦比亚生态型至少降低了 10%。这些植株在 20°C 或 26°C 下生长后，对叶绿素含量和叶绿素 b/a 比值进行了筛选。与亲本类型相比，在其中一个生长温度下，叶绿素缺失表型加剧的个体数量显著增加。我们的结论是，叶绿素含量的温度敏感表型可塑性在高等植物的突变体群体中相对常见。
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