Plasmodesmata at a glance

Sager, Ross; Lee, Jung Youn

doi:10.1242/jcs.209346

Cited by 102 publications

(85 citation statements)

References 85 publications

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“…Naked small RNAs are around 15 kDa, thus their free diffusion through the PD should not be limited (Crawford and Zambryski, 2000). As the size of plant vesicles (>10 nm) (Huang et al, 2017;Rutter and Innes, 2017) is generally larger than the diameter of PD microchannels (3-4 nm) (Ding et al, 1999;Sager and Lee, 2018), vesicles containing small RNAs may not diffuse freely through the PD. However, PD permeability can be significantly increased through dilation, active gating, and structural remodelling (Lucas and Lee, 2004).…”

Section: Movement Of Small Rnas Via the Symplast And Apoplastmentioning

confidence: 99%

Movement of small RNAs in and between plants and fungi

Wang

Dean

2020

Molecular Plant Pathology

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RNA interference is a biological process whereby small RNAs inhibit gene expression through neutralizing targeted mRNA molecules. This process is conserved in eukaryotes. Here, recent work regarding the mechanisms of how small RNAs move within and between organisms is examined. Small RNAs can move locally and systemically in plants through plasmodesmata and phloem, respectively. In fungi, transportation of small RNAs may also be achieved by septal pores and vesicles. Recent evidence also supports bidirectional cross‐kingdom communication of small RNAs between host plants and adapted fungal pathogens to affect the outcome of infection. We discuss several mechanisms for small RNA trafficking and describe evidence for transport through naked form, combined with RNA‐binding proteins or enclosed by vesicles.

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Section: Movement Of Small Rnas Via the Symplast And Apoplastmentioning

confidence: 99%

Movement of small RNAs in and between plants and fungi

Wang

Dean

2020

Molecular Plant Pathology

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“…I note that intercellular transfer between 328 neighboring cells has been seen previously in many systems. For example, it is common in plant cells 329 (Sager and Lee, 2018), is seen for viruses in cultured mammalian cells (Roberts et al, 2015) and…”

Section: Multiple Mechanisms For Timing Of the Developmental Program mentioning

confidence: 99%

Short distance non-autonomy and intercellular transfer of chitin synthase in Drosophila

Adler

2020

Preprint

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“…SUB represents an atypical receptor kinase, as its in vivo function does not require enzymatic activity of its kinase domain [38,41]. Our previous studies indicate that SUB not only localizes to the PM but is also present at plasmodesmata (PD), channels interconnecting most plant cells [42,43], where it physically interacts with the PD-specific C2 domain protein QUIRKY (QKY) [44].…”

Section: Introductionmentioning

confidence: 99%

The Arabidopsis receptor kinase STRUBBELIG regulates the response to cellulose deficiency

Chaudhary

Chen

Gao

et al. 2019

Preprint

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23 24 Short title: SUB mediates cell wall stress signaling 25 26 Abstract 29 Plant cells are encased in a semi-rigid cell wall of complex build. As a consequence, 30 cell wall remodeling is essential for the control of growth and development as well as 31 the regulation of abiotic and biotic stress responses. Plant cells actively sense physico-32 chemical changes in the cell wall and initiate corresponding cellular responses. 33 However, the underlying cell wall monitoring mechanisms remain poorly understood.34 In Arabidopsis the atypical receptor kinase STRUBBELIG (SUB) mediates tissue 35 morphogenesis. Here, we show that SUB-mediated signal transduction also regulates 36 the cellular response to a reduction in the biosynthesis of cellulose, a central 37 carbohydrate component of the cell wall. SUB signaling affects early increase of 38 intracellular reactive oxygen species, stress gene induction as well as ectopic lignin 39 and callose accumulation upon exogenous application of the cellulose biosynthesis 40 inhibitor isoxaben. Moreover, our data reveal that SUB signaling is required for 41 maintaining cell size and shape of root epidermal cells and the recovery of root 42 growth after transient exposure to isoxaben. SUB is also required for root growth 43 arrest in mutants with defective cellulose biosynthesis. Genetic data further indicate 44 that SUB controls the isoxaben-induced cell wall stress response independently from 45 other known receptor kinase genes mediating this response, such as THESEUS1 or 46 MIK2. We propose that SUB functions in a least two distinct biological processes: the 47 control of tissue morphogenesis and the response to cell wall damage. Taken together, 48 our results reveal a novel signal transduction pathway that contributes to the 49 molecular framework underlying cell wall integrity signaling. 50 51 52 3 53 Author Summary54 Plant cells are encapsulated by a semi-rigid and biochemically complex cell wall. This 55 particular feature has consequences for multiple biologically important processes, 56 such as cell and organ growth or various stress responses. For a plant cell to grow the 57 cell wall has to be modified to allow cell expansion, which is driven by outward-58 directed turgor pressure generated inside the cell. In return, changes in cell wall 59 architecture need to be monitored by individual cells, and to be coordinated across 60 cells in a growing tissue, for an organ to attain its regular size and shape. Cell wall 61 surveillance also comes also into play in the reaction against certain stresses, 62 including for example infection by plant pathogens, many of which break through the 63 cell wall during infection, thereby generating wall-derived factors that can induce 64 defense responses. There is only limited knowledge regarding the molecular system 65 that monitors the composition and status of the cell wall. Here we provide further 66 insight into the mechanism. We show that the cell surface receptor STRUBBELIG, 67 previously known to control organ development in Ar...

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Plasmodesmata at a glance

Cited by 102 publications

References 85 publications

Movement of small RNAs in and between plants and fungi

Movement of small RNAs in and between plants and fungi

Short distance non-autonomy and intercellular transfer of chitin synthase in Drosophila

The Arabidopsis receptor kinase STRUBBELIG regulates the response to cellulose deficiency

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