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Gloger's rule describes how the colouring of animals darkens the closer to the equator they live. Similar global trends have not been observed in plants. Here Gloger's rule holds for the variation of UV pigments in silverweed (Argentina anserine).
Combining transcriptomics and molecular cell biology has identified homologous hormone systems between land plants and freshwater green algae. In particular, Arabidopsis and Spirogyra possess homologous ethylene-signalling pathways.
Sugar beet provides around one third of the sugar consumed worldwide and serves as a significant source of bioenergy. A series of laboratory experiments suggests that the transporter BvTST2.1 is responsible for sucrose uptake in the vacuoles of sugar beet taproots.
To avoid self-fertilization, members of the Solanaceae family, such as Petunia, use a system in which components of S-ribonucleases in pistils are detoxified by a collection of 16–20 different S-locus F-box proteins expressed in non-self pollen.