Fernan Federici, Jim Haseloff (2011) CIL:38805, Arabidopsis thaliana. CIL. Dataset

Confocal micrograph showing the expression of different fluorescent proteins in the stem of a thale cress seedling (Arabidopsis thaliana) used to study in vivo gene expression. Arabidopsis was the first plant to have its entire genome sequenced and is an important model for studying plant biology. These genetically modified plants have fluorescent proteins associated with different gene promoters. In these plants, when a promoter switches a gene on, a corresponding fluorescent protein is produced, allowing expression of these genes to be viewed. In this image green fluorescence (GFP) shows the expression of the gene under investigation and the red fluorescence corresponds to the expression of a known gene and thus acts as a reference. Cells that are yellow express both genes. A third fluorescent protein is attached to the plasma membrane to show the outline of each cell. Small red cells that don't have the gene active and do not express GFP are precursors of stomata.

共聚焦显微镜图像展示了拟南芥（Arabidopsis thaliana）幼苗茎部不同荧光蛋白的表达情况，该图像用于研究活体基因表达。拟南芥是首个完成全基因组测序的植物，成为研究植物生物学的重要模式植物。这些转基因植物中，与不同基因启动子关联的荧光蛋白被引入。在这些植物中，当启动子激活基因时，相应的荧光蛋白被产生，从而允许观察这些基因的表达。在该图像中，绿色荧光（GFP）显示了研究基因的表达情况，而红色荧光则对应已知基因的表达，因此充当参照。同时表达两种基因的细胞呈现黄色。第三种荧光蛋白附着于质膜上，以展示每个细胞的轮廓。未激活基因且不表达GFP的小红色细胞是气孔的前体。