Recent Posts

TREHALOSE-6-PHOSPHATE SYNTHASE1 – an essential enzyme in Arabidopsis

Fichtner et al. transformed the embryo-lethal mutant tps1 with variants of the TPS1 gene to identify critical domains for function and localization of the gene product. The Plant Cell (2020) https://doi.org/10.1105/tpc.19.00837 By Franziska Fichtner1,2 and John Lunn1, 1Max Planck Institute of Molecular…

Ouch! Plant perception of wounding

Sözen et al. describe two independent MAPK signaling cascades that are each activated with different kinetics, providing an immediate and delayed response to herbivore feeding. The Plant Cell (2020) https://doi.org/10.1105/tpc.19.00917 By Cécile Sözen, Marie Boudsocq and Jean Colcombet, Université…

Repression of FUSCA3 by BASIC PENTACYSTEINE PROTEINS promotes ovule development and coordinates embryo and endosperm growth

Wu et al. found that FUSCA3, which regulates seed development, is localized to specific cells of the ovule and seed coat and is itself regulated by BASIC PENTACYSTEINE (BPC) proteins.  Plant Cell https://doi.org/10.1105/tpc.19.00764 By Sonia Gazzarrini (University of Toronto, Dept. Biological Sciences…

Cytokinin signaling patterns maize leaves, otherwise things get hairy and frayed

Variation in leaf morphology across the angiosperms is impressive and abounds. Leaves are the primary photosynthetic organ for most angiosperms, acting as the primary sites of light capture and gas exchange. Typical of grass leaves, maize leaves are strap-like and simple, with unelaborated margins. Leaves…

Branch Formation (or Not) in the Leaf Axil

Li 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

Liu 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…

Breaking the Mold: Transcriptome Analysis of Quantitative Disease Resistance to a Fungal Pathogen

Sucher et al. reveal that regulatory divergence of conserved genes makes a major contribution during the response of Pentapetalae plants to a fungal pathogen. Plant Cell. https://doi.org/10.1105/tpc.19.00806 Background: Necrotrophic plant pathogens actively kill host cells to cause disease. This…

Copy Number Variations in the Arabidopsis Genome

Żmieńko 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,…

The possible danger of divergent non-coding transcription in plants: widespread RNAi

Thieffry et al. give a definitive answer to the question of divergent transcription initiation in Arabidopsis, and discover that if left unchecked, it would lead to rampant RNAi. The Plant Cell (2020) https://doi.org/10.1105/tpc.19.00815 By Albin Sandelin 1,2, Peter Brodersen 1 and Axel Thieffry 1,2,…