SMAX1-dependent seed germination bypasses GA signalling in Arabidopsis and Striga (Nature Plants)
Plant Science Research WeeklyStrigolactones (SL) are germination cues for parasitic plants, as their seeds will not germinate until they perceive SL exuded from the host plant. In contrast, gibberellins (GA) are the dominant germination hormone in non-parasitic plants; GA-mediated degradation of DELLA repressors permits germination.…
PIN FORMED 2 modulates the transport of arsenite in Arabidopsis thaliana (Plant Comms.)
Plant Science Research WeeklyPIN FORMED (PIN) proteins are known for their directional auxin transport capacity. Ashraf et al. found that auxin transporter PINs have sequence similarity to bacterial arsenite transporter arsB, yeast Saccharomyces cerevisiae arsenite transporter SsAcr3, and arsenic hyperaccumulator fern Pteris vittata…
Tissue-resolved multi-omics atlas of Arabidopsis (Nature)
Plant Science Research WeeklyArabidopsis as a model system has been intensively studied over the past twenty years, but the proteome of Arabidopsis has been less well characterized. Here, Mergner et al. report the first 30-tissue-type integrated proteome, phosphoproteome and transcriptome atlas of Arabidopsis. The data cover the…
An RNA thermoswitch regulates daytime growth in Arabidopsis (Nature Plants)
Plant Science Research WeeklyPlants are sessile organisms and as such they must be highly responsive to environmental cues including temperature, and adjust their growth and development accordingly. Considering that mean global surface temperatures are expected to continue to rise dramatically in the 21st century, it is crucial…
Branch Formation (or Not) in the Leaf Axil
Research, The Plant Cell, The Plant Cell: In a NutshellLi et al. report a regulatory module that controls the initiation of axillary meristems, thereby determining plant branching. Plant Cell https://doi.org/10.1105/tpc.20.00012
By Yu Li and Yunhai Li
State Key Laboratory of Plant Cell and Chromosome Engineering, CAS Centre for Excellence in Molecular…
A new player links ABA biosynthesis and signaling with seed dormancy
Research, The Plant Cell, The Plant Cell: In a NutshellLiu et al. identify new connections between known regulators of seed dormancy, acting through modulation of ABA biosynthesis and signaling. The Plant Cell (2020) https://doi.org/10.1105/tpc.20.00026
By Fei Liu and Yong Xiang, Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome…
Copy Number Variations in the Arabidopsis Genome
Research, The Plant Cell, The Plant Cell: In a NutshellŻmieńko et al. generate a catalog of large copy number variations in Arabidopsis, shedding light on the genetic basis of phenotypic variation. Plant Cell https://doi.org/10.1105/tpc.19.00640
By Agnieszka Żmieńko and Marek Figlerowicz, Institute of Bioorganic Chemistry, Polish Academy of Sciences,…
How Light Activates the Plant Circadian Clock
Research, The Plant Cell, The Plant Cell: In a NutshellLiu et al. discover how members of the photosensory-signaling pathway orchestrate circadian clock gene expression to regulate plant responses to daily changes in the light environment. Plant Cell https://doi.org/10.1105/tpc.19.00981
Background: Plants use an endogenous time-keeping mechanism known…
CDGK1 maintains class I meiotic recombination precursors
Research, The Plant Cell, The Plant Cell: In a NutshellNibau et al. explore the role of a cyclin-dependent kinase in meiosis.
Plant Cell https://doi.org/10.1105/tpc.19.00942
By Candida Nibau, Andrew Lloyd, Dylan Phillips and John Doonan
IBERS, Aberystwyth University, UK
Background: Cyclin-dependent kinases are involved in many cellular…