Formation of xylem vessels: Role of a WRKY transcription factor
Ge et al explore the function of a transcription factor that functions upstream of a master regulator of tracheary element differentiation. Plant Cell https://doi.org/10.1105/tpc.19.00689
By Shating Ge1, Juan Xu2, and Shuqun Zhang3
1 College of Plant Protection, Nanjing Agricultural University,…
A Catalytic Inhibitor of Cellulose Biosynthesis in the Toolbox
Huang et al. identify a new cellulose synthase inhibitor. Plant Cell https://doi.org/10.1105/tpc.20.00202.
By Lei Huang and Chunhua Zhang
Background: Cellulose is a polymer of b-1,4-D-glucose that serves as an essential source of everyday objects such as cloth, paper, and biofuel. Plant cellulose…
A closed mouth catches no pathogens: how plants sense bacteria and regulate stomata
Chan, Panzeri, et al. show how a receptor-like kinase regulates stomatal immunity by phosphorylating an anion channel that mediates closure of stomata. Plant Cell. https://doi.org/10.1105/tpc.19.00578
By Ching Chana,b and Laurent Zimmerlia
aDepartment of Life Science and Institute of Plant Biology,…
The Basis of Glyphosate Resistance in Palmer Amaranth
Molin et al. describe the sequence and gene organization of an extrachromosomal circular DNA element, the eccDNA replicon, that confers resistance to the herbicide glyphosate in amaranths. The Plant Cell (2020) https://doi.org/10.1105/tpc.20.00099
By William Molin a and Christopher Saski b, a USDA-ARS,…
A Chloroplast tRNA-Modifying Enzyme Functions in Plant Development
Liu, Ren et al. discover how a natural allele of tRNA-modifying GTPase gene PDD leads to pleiotropic developmental defects in rice. Plant Cell https://doi.org/10.1105/tpc.19.00660.
By Hui Liu and Pingli Lu
Fudan University and Henan University
Background: Transfer RNAs (tRNAs) are components…
Seed-Specific Saponin Biosynthesis in Medicago
Ribeiro, Lacchini et al. discover a seed-specific transcription factor that helps determine the composition of the defense compounds saponins in developing Medicago truncatula seeds. Plant Cell https://doi.org/10.1105/tpc.19.00609
By Elia Lacchini, Alain Goossens, and Jacob Pollier
VIB-UGent…
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…