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Widespread biological response to rapid warming on the Antarctic Peninsula

Amesbury et al. examined stratified cores from moss banks across the Antarctic Peninsula (AP) as a paleoclimate archive. They measured moss accumulation rate, growth rate, microbial productivity, and carbon-isotope discrimination (Δ13C, as a proxy for photosynthetic assimilation rate). Their data reveal a “widespread biological response to recent rapid warming” especially since about 1950, with spatial […]

Global translational reprogramming of plant immune response, and engineering of disease resistance through regulated translation ($)

Plants fight back when pathogens attack, and in the first of a pair of papers Xu et al. have revealed a new insight into this response by demonstrating a significant translational upregulation of many defense-response mRNAs (10.1038/nature22371).  Previously, this group showed that the translation of a key regulator of transcriptional responses to pathogens, TBF1, is […]

Bacterial biosensors for in vivo spatiotemporal mapping of root secretion

Biosensors are powerful tools that provide readouts for various small molecules so that they can be detected and located. Pini et al. have developed a set of biosensors for expression in bacteria (Rhizobium leguminosarum) that reveal  some of the small molecules (including key sugars, polyols, organic acids, amino acids and flavonoids) secreted by the roots […]

Towards an understanding of spiral patterning in the Sargassum muticum shoot apex

Classic studies of leaf placement (phyllotaxy) showed that two different mechanisms occur in land plants. In mosses, leaf placement is determined by the plane of cell division within the single apical cell, whereas in seed plants auxin acts as a morphogen that specifies leaf positioning. Linardić and Braybrook examined how the spiral pattern of phyllotaxy […]

Target RNA secondary structure is a major determinant of miR159 efficacy

The interactions with microRNAs (miRNAs) and their targets in plants is assumed to be dependent largely on complementarity between the two RNAs. Zheng et al. investigated the interactions between miR159 and its putative targets, mRNA of several MYB genes, each with similar complementarity to the miRNA. Genetic data however suggest that miR159 silences some of […]

371 Articles | Page 1 of 62