Evolution of Plasmodesmata

Raven, John A.

doi:10.1002/9780470988572.ch2

Cited by 26 publications

(19 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Eukaryotic phylogeny is modified from (Keeling et al 2014). Instances of multicellularity are mapped following (Bonner 1998; King 2004; Raven 2005; Ott et al 2015; Sebé-Pedrós et al 2017). (B and C) Examples of aggregative and clonal multicellularity.…”

Section: Figurementioning

confidence: 99%

The Origin of Animal Multicellularity and Cell Differentiation

2017

View full text Add to dashboard Cite

Over 600 million years ago, animals evolved from a unicellular or colonial organism whose cell(s) captured bacteria with a collar complex, a flagellum surrounded by a microvillar collar. Using principles from evolutionary cell biology, we reason that the transition to multicellularity required modification of pre-existing mechanisms for extracellular matrix synthesis and cytokinesis. We discuss two hypotheses for the origin of animal cell types: division of labor from ancient plurifunctional cells and conversion of temporally alternating phenotypes into spatially juxtaposed cell types. Mechanistic studies in diverse animals and their relatives promise to deepen our understanding of animal origins and cell biology.

show abstract

Section: Figurementioning

confidence: 99%

The Origin of Animal Multicellularity and Cell Differentiation

2017

View full text Add to dashboard Cite

show abstract

“…First, PD are very small (~30–50nm in diameter) and difficult to isolate from other membranes, which has long prevented direct analysis of PD components [2]. Second, PD are essential to plant survival: all land plants have PD, and no mutant lacking PD has ever been isolated [3,4]. Third, PD function is extremely sensitive to manipulation (such as mechanical stress), which complicates efforts to directly assay PD transport [5].…”

Section: Introductionmentioning

confidence: 99%

Plasmodesmata dynamics are coordinated by intracellular signaling pathways

Brunkard

Runkel

Zambryski

2013

Current Opinion in Plant Biology

View full text Add to dashboard Cite

Membrane-lined channels called plasmodesmata (PD) connect the cytoplasts of adjacent plant cells across the cell wall, permitting intercellular movement of small molecules, proteins, and RNA. Recent genetic screens for mutants with altered PD transport identified genes suggesting that chloroplasts play crucial roles in coordinating PD transport. Complementing this discovery, studies manipulating expression of PD-localized proteins imply that changes in PD transport strongly impact chloroplast biology. Ongoing efforts to find genes that control root and stomatal development reveal the critical role of PD in enforcing tissue patterning, and newly discovered PD-localized proteins show that PD influence development, intracellular signaling, and defense against pathogens. Together, these studies demonstrate that PD function and formation are tightly integrated with plant physiology.

show abstract

“…In multicellular organisms, PD provide a convenient route for cell-to-cell communication among immobile cells surrounded by rigid cell walls. In fact, PD occur in land plants, in multicellular algae and phototrophic protists (but astonishingly not in all groups; reviewed by Raven, 2005), as well as in a few species of multicellular fungi (reviewed by Lucas et al, 1993). An excellent review by Raven (2005) indicates that PD evolved independently in brown algae, in characean algae, and up to five times in green algae.…”

Section: The Appearance Of Pd In Evolutionmentioning

confidence: 99%

“…In fact, PD occur in land plants, in multicellular algae and phototrophic protists (but astonishingly not in all groups; reviewed by Raven, 2005), as well as in a few species of multicellular fungi (reviewed by Lucas et al, 1993). An excellent review by Raven (2005) indicates that PD evolved independently in brown algae, in characean algae, and up to five times in green algae. Although truly multicellular forms can be found also among red algae, haptophytes and dinoflagellates, they do not form PD.…”

Section: The Appearance Of Pd In Evolutionmentioning

confidence: 99%

“…He argued that “some of the features characterizing the multicellular plant body, such as cellular differentiation, PD-like structures, control mechanisms for the orientation of cell cleavage, and cellular differentiation, are evident among extant and presumably very ancient cyanobacteria.” Thus, such traits like cell wall and PD might have evolved as parts of the phenomenon of multicellularity which could have been transmitted from cyanobacterial endosymbionts to the host nucleus via lateral transfer of genes “during or shortly after primary endosymbiotic events in the very distant past” (Niklas, 2000). Other authors argued that this seems rather unlikely, as the intercellular connections in cyanobacteria are more similar to gap junctions than to PD (Raven, 2005). However, the newest findings indicating that the process of PD formation in plant embryos depends to some extent on plastid signals (Burch-Smith and Zambryski, 2010; Burch-Smith et al, 2011), support Niklas’ hypothesis.…”

Section: The Appearance Of Pd In Evolutionmentioning

confidence: 99%

See 1 more Smart Citation

Evolutionary aspects of non-cell-autonomous regulation in vascular plants: structural background and models to study

Evkaikina¹,

Romanova²,

Voitsekhovskaja³

2014

Front. Plant Sci.

View full text Add to dashboard Cite

Plasmodesmata (PD) serve for the exchange of information in form of miRNA, proteins, and mRNA between adjacent cells in the course of plant development. This fundamental role of PD is well established in angiosperms but has not yet been traced back to the evolutionary ancient plant taxa where functional studies lag behind studies of PD structure and ontogenetic origin. There is convincing evidence that the ability to form secondary (post-cytokinesis) PD, which can connect any adjacent cells, contrary to primary PD which form during cytokinesis and link only cells of the same lineage, appeared in the evolution of higher plants at least twice: in seed plants and in some representatives of the Lycopodiophyta. The (in)ability to form secondary PD is manifested in the symplasmic organization of the shoot apical meristem (SAM) which in most taxa of seedless vascular plants differs dramatically from that in seed plants. Lycopodiophyta appear to be suitable models to analyze the transport of developmental regulators via PD in SAMs with symplasmic organization both different from, as well as analogous to, that in angiosperms, and to understand the evolutionary aspects of the role of this transport in the morphogenesis of vascular plant taxa.

show abstract

Evolution of Plasmodesmata

Cited by 26 publications

References 46 publications

The Origin of Animal Multicellularity and Cell Differentiation

The Origin of Animal Multicellularity and Cell Differentiation

Plasmodesmata dynamics are coordinated by intracellular signaling pathways

Evolutionary aspects of non-cell-autonomous regulation in vascular plants: structural background and models to study

Contact Info

Product

Resources

About