Background Bolting is regarded as the initiation of reproduction stage in the growth and development of an Arabidopsis plant, when a set of floral integrator genes activate the expression of floral meristem identity genes LFY and AP1 to initiate flowering transition[1,2]. However, how the expression of key genes, such as AP1, responds of diverse signals during flower development remains largely...

Hydrogen peroxide (H(2)O(2)) is discussed as being a signaling molecule in Arabidopsis (Arabidopsis thaliana) leaf senescence. Intracellular H(2)O(2) levels are controlled by the H(2)O(2)-scavenging enzyme catalase in concert with other scavenging and producing systems. Catalases are encoded by a small gene family, and the expression of all three Arabidopsis catalase genes is regulated in a sen...

Radish flower color, bolting time, and flowering time are important traits for attracting certain pollinators affect fleshy root quality. In this study, an analysis of the anthocyanidins in radish flowers by high-performance liquid chromatography revealed that differences cyanidin content likely to be associated with variability colors (i.e., purple white petals). A quantitative trait loci (QTL...

Once segmentation of 3D surface data of a rock pile has been performed, the next task is to determine the visibility of the surface rocks. A region boundary-following algorithm that accommodates irregularly spaced 3D coordinate data is presented for determining this visibility. We examine 3D surface segmentations of laboratory rock piles and determine which regions in the segmentation correspon...