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The DOG1 protein is a major regulator of seed dormancy in Arabidopsis. Here, Née et al. provide evidence that DOG1 can interact with the type 2C protein phosphatases AHG1 and AHG3 and that this represents the convergence point of the DOG1-regulated dormancy pathway and signalling by the plant hormone abscisic acid.
How plants reject foreign pollen remains elusive. Now, it is found that the recognition between two proteins encoded by genes duplicated from pollen–pistil recognition loci causes intraspecific unilateral incompatibility in Brassica rapa.
The time of flowering is important in crop production. Rice has now been genetically engineered to respond to agrochemical spraying, which results in floral induction. This research offers new perspectives to control the phenological development of crops in the field.
In 1916, Swedish geologist Ernst Jakob Lennart von Post delivered a provocative lecture in Oslo, Norway, advocating the use of pollen grains in bog sediments as indicators of past vegetation and climate. The lecture spawned many applications and represents a landmark in multidisciplinary science.