The mechanism by which auxin alters patters of transcription through TIR1s, ARFs and IAA proteins is well established, but less clear is our understanding of how rapid, non-transcriptional auxin responses occur. APB1 was implicated in non-transcriptional responses, but in the past few years evidence for ABP1 involvement has been challenged. Strader and Zhao review the […]
Martin et al. have written a must-read review on the evolution of plant mutualistic symbioses and strategies through which hosts and microbes communicate and coordinate their activities. This review also covers the contributions of hormones in the formation of symbiotic tissues, and how the mutualistic microbes evade host defenses. The authors observe the need to […]
Review: Enhancing genetic gain in the era of molecular breeding ($) Yield is determined by the crop’s genetic potential and the realization of that potential as affected by agronomic practices and environmental factors. Xu et al. address how yields can be improved through enhancing genetic gain, which they define as “the amount of increase in […]
Author Katherine Wu highlights some of the challenges that interfere with scientists communicating. She says, “Both scientists and non-scientists must commit to not only communication, but also a drastic reassessment of how we communicate with each other. I believe mending the rift starts with disabusing ourselves of three key assumption ns. First, we often assume […]
The Science Show on Radio National, Australia, interviewed Robert Furbank, Director of the ARC Centre of Excellence for Translational Photosynthesis, Australian National University, on efforts to engineer C4 photosynthesis into rice. http://www.abc.net.au/radionational/programs/scienceshow/turbo-charging-crops-to-feed-the-billions/8541396
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 […]
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 […]
RxLR effectors are proteins secreted from pathogens that enter the cells of the host and support the effectiveness of the pathogen in various ways. Their name refers to the sequence RxLR (Arg-Xxx-Leu-Arg). Previously, this sequence has been thought to be involved the effector’s entry into the host cell. Wawra et al. used mass spectrometry and […]
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 […]