Cell-to-cell communication via plasmodesmata during Arabidopsis embryogenesis

Kim, In-Soon; Zambryski, Patricia

doi:10.1016/j.pbi.2005.09.013

Cited by 93 publications

(75 citation statements)

References 31 publications

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“…The first is that plant cells have relatively rigid cell walls such that morphogenesis must occur in the absence of cell migration to generate spatiotemporal patterns. Therefore, programmed cell death and differential asymmetric cell division and growth (e.g., De Smet and Beeckman, 2011), as well as the dynamic emergence and regeneration of spatial boundaries and regions take on particular importance in plant development (Scheres, 2001;Kim and Zambryski, 2005). In this context, "spatially dependent differentiation" refers to the generation of distributions of cell types associated with heterogeneous patterns of signals.…”

Section: Characteristics Of Plant Development and Organizationmentioning

confidence: 99%

“…However, in many of the best-studied developmental systems of the plant model A. thaliana, it is commonly observed that transcription factors involved in cell-fate determination are also involved in global patterning processes, e.g., flower organ determination (Urbanus et al, 2010), epidermal cell patterning (Kurata et al, 2005) and meristem subspecification in the root (Cui et al, 2007). Indeed, it has been shown that the mobilization of transcription factors and other molecules through plasmodesmata (channels traversing cell walls and enabling transport and communication between cells), plays a central role during plant developmental processes (Kim and Zambryski, 2005). Although intercellular transport of developmental transcription factors is not unknown in animal systems, it is extremely rare (Prochiantz, 2011).…”

Section: Characteristics Of Plant Development and Organizationmentioning

confidence: 99%

“…In contrast to animal embryos in which cell differentiation is mediated mainly by intracellular GRNs (not DPMs), and pattern formation controlled by several distinct DPMs involving cell rearrangement Bhat, 2008, 2009), plant cells walls preclude local rearrangement. Significantly, however, such walls have channels that allow symplastic movement of molecules between cells (Kim and Zambryski, 2005). In this manner, rather than cells, molecules such as transcription factors, peptides, RNA, auxins and other morphogens, migrate or Table 1).…”

Section: Spatially Dependent Differentiation (Dif)mentioning

confidence: 99%

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Dynamical patterning modules in plant development and evolution

Hernández-Hernández

Niklas²,

Newman³

et al. 2012

Int. J. Dev. Biol.

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Broad comparative studies at the level of developmental processes are necessary to fully understand the evolution of development and phenotypes. The concept of dynamical patterning modules (DPMs) provides a framework for studying developmental processes in the context of wide comparative analyses. DPMs are defined as sets of ancient, conserved gene products and molecular networks, in conjunction with the physical morphogenetic and patterning processes they mobilize in the context of multicellularity. The theoretical framework based on DPMs originally postulated that each module generates a key morphological motif of the basic animal body plans and organ forms. Here, we use a previous definition of the plant multicellular body plan and describe the basic DPMs underlying the main features of plant development. For each DPM, we identify characteristic molecules and molecular networks, and when possible, the physical processes they mobilize. We then briefly review the phyletic distribution of these molecules across the various plant lineages. Although many of the basic plant DPMs are significantly different from those of animals, the framework established by a DPM perspective on plant development is essential for comparative analyses aiming to provide a truly mechanistic explanation for organic development across all plant and animal lineages.

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Section: Characteristics Of Plant Development and Organizationmentioning

confidence: 99%

Section: Characteristics Of Plant Development and Organizationmentioning

confidence: 99%

Section: Spatially Dependent Differentiation (Dif)mentioning

confidence: 99%

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Dynamical patterning modules in plant development and evolution

Hernández-Hernández

Niklas²,

Newman³

et al. 2012

Int. J. Dev. Biol.

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“…The most basal suspensor cell enlarges dramatically and has abundant contact with surrounding maternal tissues, likely facilitating the supply of nutrients to the embryo. It is interesting to note that in a number of species no plasmodesmata connecting the embryo to maternal tissue have been observed, in sharp contrast to the extensive symplastic connections initially present within the embryo (Kim and Zambryski, 2005). Therefore, it is unlikely that high molecular weight molecules of maternal origin can be transferred to the embryo.…”

Section: Stages Of Arabidopsis Embryo Developmentmentioning

confidence: 99%

Embryogenesis: Pattern Formation from a Single Cell

Capron

Chatfield

Provart

et al. 2009

The Arabidopsis Book

103

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During embryogenesis a single cell gives rise to a functional multicellular organism. In higher plants, as in many other multicellular systems, essential architectural features, such as body axes and major tissue layers are established early in embryogenesis and serve as a positional framework for subsequent pattern elaboration. In Arabidopsis, the apicalbasal axis and the radial pattern of tissues wrapped around it are already recognizable in young embryos of only about a hundred cells in size. This early axial pattern seems to provide a coordinate system for the embryonic initiation of shoot and root. Findings from genetic studies in Arabidopsis are revealing molecular mechanisms underlying the initial establishment of the axial core pattern and its subsequent elaboration into functional shoots and roots. The genetic programs operating in the early embryo organize functional cell patterns rapidly and reproducibly from minimal cell numbers. Understanding their molecular details could therefore greatly expand our ability to generate plant body patterns de novo, with important implications for plant breeding and biotechnology.

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“…If the transient mechanism indeed operates in plants during inflorescence development, one would predict that it would be possible to find somatic mutations that could change the behavior of some meristems resulting in chimeric inflorescences. However, this might not be the case because communication mechanisms, such as diffusion of morphogens (Crick, 1970;Kim and Zambryski, 2005), active transport such as that of the phytohormone auxin; (Vieten et al, 2007), signaling among cell layers (as in meristem patterning by WUS and CLV proteins; Doerner et al, 2000) among many others, might constitute mechanisms important for coordinated responses in organisms. However, our skepticism is not sufficient to discard the transient mechanism, and experiments would be needed to this end.…”

mentioning

confidence: 99%