The tensor-based model for growth and cell divisions of the root apex. II. Lateral root formation

Szymanowska-Pułka, Joanna; Nakielski, Jerzy

doi:10.1007/s00425-010-1239-1

Cited by 20 publications

(29 citation statements)

References 34 publications

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“…1h,i,k,l). Fates of cells in these side regions are similar either in observation [3] or in modeling [5,6]: they are formed at early stages and soon thereafter they stop dividing. The external walls of these cells seem to constitute LR boundaries separating the LR from the parent root.…”

Section: Resultssupporting

confidence: 56%

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Various scenarios of the cell pattern formation in Arabidopsis lateral root

2014

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During lateral root (LR) development a coordinate sequence of cell divisions, accompanied by a change of the organ form takes place. Both the order of anatomical events and morphological features may vary for individual primordia. At early stages of LR primordia development oblique division walls are inserted in cells that are symmetrically located on both sides of the axis of the developing LR primordium, and thereby allow for the protrusion of the LR. We hypothesize that both oblique cell wall insertion and continuous changes in primordium form could be a consequence of a local change in stress distribution in the region of the LR initiation.

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Section: Resultssupporting

confidence: 56%

“…A primordium expands by growing through the parent root tissues to emerge through the epidermis [3]. At this stage the geometry and cell patterning of the LR apex are fixed [5] and resemble those observed in the main root.…”

Section: Introductionmentioning

confidence: 99%

Various scenarios of the cell pattern formation in Arabidopsis lateral root

2014

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“…Modeling studies have provided greater insight into the role of auxin transport in auxin related developmental programmes (Swarup et al, 2005; Kramer and Bennett, 2006; Kramer, 2008; Laskowski et al, 2008; Jones et al, 2009; Prusinkiewicz et al, 2009; Mironova et al, 2010; Szymanowska-Pułka and Nakielski, 2010; Vernoux et al, 2011; Bridge et al, 2012). Modeling auxin fluxes help us to understand how these fluxes are established and maintained, as well as their effect on growth and development.…”

Section: Modeling Auxin Transportmentioning

confidence: 99%

AUX/LAX family of auxin influx carriers—an overview

Swarup¹,

Péret²

2012

Front. Plant Sci.

249

200

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Auxin regulates several aspects of plant growth and development. Auxin is unique among plant hormones for exhibiting polar transport. Indole-3-acetic acid (IAA), the major form of auxin in higher plants, is a weak acid and its intercellular movement is facilitated by auxin influx and efflux carriers. Polarity of auxin movement is provided by asymmetric localization of auxin carriers (mainly PIN efflux carriers). PIN-FORMED (PIN) and P-GLYCOPROTEIN (PGP) family of proteins are major auxin efflux carriers whereas AUXIN1/LIKE-AUX1 (AUX/LAX) are major auxin influx carriers. Genetic and biochemical evidence show that each member of the AUX/LAX family is a functional auxin influx carrier and mediate auxin related developmental programmes in different organs and tissues. Of the four AUX/LAX genes, AUX1 regulates root gravitropism, root hair development and leaf phyllotaxy whereas LAX2 regulates vascular development in cotyledons. Both AUX1 and LAX3 have been implicated in lateral root (LR) development as well as apical hook formation whereas both AUX1 and LAX1 and possibly LAX2 are required for leaf phyllotactic patterning.

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“…This suggests that the tensor-based control related to PDGs is needed regardless of cellular organization of the root apex (quiescent center or the apical cell). It is worth mentioning that directional information included in PDGs is essential in the present paper to describe cell pattern maintenance during steady growth, and is also of importance for unsteady growth which takes place, for example, during the lateral root formation (Szymanowska-Pułka and Nakielski 2010). …”

Section: Discussionmentioning

confidence: 99%

The simulation model of growth and cell divisions for the root apex with an apical cell in application to Azolla pinnata

Piekarska-Stachowiak

Nakielski

2013

Planta

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In contrast to seed plants, the roots of most ferns have a single apical cell which is the ultimate source of all cells in the root. The apical cell has a tetrahedral shape and divides asymmetrically. The root cap derives from the distal division face, while merophytes derived from three proximal division faces contribute to the root proper. The merophytes are produced sequentially forming three sectors along a helix around the root axis. During development, they divide and differentiate in a predictable pattern. Such growth causes cell pattern of the root apex to be remarkably regular and self-perpetuating. The nature of this regularity remains unknown. This paper shows the 2D simulation model for growth of the root apex with the apical cell in application to Azolla pinnata. The field of growth rates of the organ, prescribed by the model, is of a tensor type (symplastic growth) and cells divide taking principal growth directions into account. The simulations show how the cell pattern in a longitudinal section of the apex develops in time. The virtual root apex grows realistically and its cell pattern is similar to that observed in anatomical sections. The simulations indicate that the cell pattern regularity results from cell divisions which are oriented with respect to principal growth directions. Such divisions are essential for maintenance of peri-anticlinal arrangement of cell walls and coordinated growth of merophytes during the development. The highly specific division program that takes place in merophytes prior to differentiation seems to be regulated at the cellular level.Electronic supplementary materialThe online version of this article (doi:10.1007/s00425-013-1950-9) contains supplementary material, which is available to authorized users.

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The tensor-based model for growth and cell divisions of the root apex. II. Lateral root formation

Cited by 20 publications

References 34 publications

Various scenarios of the cell pattern formation in Arabidopsis lateral root

Various scenarios of the cell pattern formation in Arabidopsis lateral root

AUX/LAX family of auxin influx carriers—an overview

The simulation model of growth and cell divisions for the root apex with an apical cell in application to Azolla pinnata

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