Recent Posts

Lignin-based resistance to Cuscuta campestris in tomato (bioRxiv)

Dodder (Cuscuta campestris) is a plant that parasitizes other plants by forming penetrating haustoria through which they tap into the host’s vascular tissues and extract nutrients. Most tomatoes are susceptible, but a few varieties are resistant. Jhu and Farhi et al. examined these resistant varieties…

EXPANSIN A1-mediated radial swelling of pericycle cells positions anticlinal cell divisions during lateral root initiation ($) (PNAS)

Lateral root development helps plants explore the soil for mineral nutrients and water, and there are environmental and internal cues that precede the formation of lateral root primordia. In Arabidopsis thaliana, some of these internal cues include increased auxin concentrations around lateral root founder…

The Surprisingly Similar Glycomes of Maize and Arabidopsis Golgi

Okekeogbu et al. compare the glycomes and proteomes of the Golgi in grasses and dicots, finding that the differences in cell wall architecture are not reflected in differences between polysaccharides produced in the Golgi. Plant Cell https://doi.org/10.1105/tpc.18.00755 Background: Grasses and other…

Generating novel, dual herbicide-resistant crops using CRISPR-mediated gene editing (Plant Physiol)

There is an ever-growing need for novel herbicides as more weeds are becoming resistant to commonly used herbicides. In a recent report from Hu et al., the authors identified that a previously described cellulose biosynthesis-inhibiting chemical, C17, possesses an herbicidal quality. The authors showed…

Acetylation in the Assembly of Cell-Wall Architecture

Zhang et al. discover a deacetylase from rice that highlights the importance regulating acetylation in the cell wall. Plant Cell https://doi.org/10.1105/tpc.18.00894 By Baocai Zhang and Yihua Zhou, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences Background: Plant cells…

Side Chains Influence Pectin Properties

Šola et al. examine how galactose alters rhamnogalacturonan-I properties. Plant Cell https://doi.org/10.1105/tpc.18.000954 By Krešimir Šola and George W. Haughn Department of Botany, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada Background: Pectin is a component of the plant…

Glycomic analysis of plant endomembrane vesicles (Plant Cell)

Endomembrane vesicles carry not only secreted proteins but also carbohydrates for cell wall synthesis, yet relatively less is know about this latter process. Wilkop et al. describe a method to investigate the glycan contents of specific subsets of vesicles, to begin to understand how these cargos are…

Introducing curcumin biosynthesis in Arabidopsis enhances lignocellulosic biomass processing (Nature Plants)

Lignin, polymerized from aromatic monolignols, provides strength to cell walls but its resistance to enzymatic degradation thwarts efforts to isolate cellulosic carbohydrates from cell walls for biofuels and other applications. It has been shown that lignin’s properties can be altered by the incorporation…

Xylan and lignin deposition are independent of cellulose in the secondary cell wall (Plant Cell)

The secondary cell wall (SCW) plays an important role in the structural integrity of plants and is key to efficient water conductivity. Despite the important role of the SCW, little known about how and when SCW components are assembled. Currently, it is understood that cellulose deposition is a precursor…