Pre-zygotic interspecies incompatibility in angiosperms is a male–female relationship that inhibits the formation of hybrids between two species. Here, we report on the identification of STIGMATIC PRIVACY 1 (SPRI1), an interspecies barrier gene in Arabidopsis thaliana. We show that the rejection activity of this stigma-specific plasma membrane protein is effective against distantly related Brassicaceae pollen tubes and is independent of self-incompatibility.
Clinical transplantation of tissue fragments, including islets, faces a critical challenge because of a lack of effective strategies that ensure efficient engraftment through the timely integration of vascular networks. We recently developed a complex organoid engineering method by “self-condensation” culture based on mesenchymal cell-dependent contraction, thereby enabling dissociated heterotypic lineages including endothelial cells to self-organize in a spatiotemporal manner.
A small molecule for stroke therapy Better therapies for motor impairments after stroke are greatly needed. In mice and nonhuman primates, Abe et al. found that edonerpic maleate enhanced synaptic plasticity and functional recovery after a traumatic insult to the brain (see the Perspective by Rumpel). This recovery of motor function was accompanied by functional reorganization of the cortex.
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