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Cell type boundaries organize plant development

Caggiano, Monica Pia ; Yu, Xiulian ; Bhatia, Neha ; Larsson, André LU ; Ram, Hasthi ; Ohno, Carolyn K ; Sappl, Pia ; Meyerowitz, Elliot M ; Jönsson, Henrik LU and Heisler, Marcus G. (2017) In eLife
Abstract
In plants the dorsoventral boundary of leaves defines an axis of symmetry through thecentre of the organ separating the top (dorsal) and bottom (ventral) tissues. Although thepositioning of this boundary is critical for leaf morphogenesis, how the boundary is established andhow it influences development remains unclear. Using live-imaging and perturbation experimentswe show that leaf orientation, morphology and position are pre-patterned by HD-ZIPIII and KANgene expression in the shoot, leading to a model in which dorsoventral genes coordinate toregulate plant development by localizing auxin response between their expression domains.However we also find that auxin levels feedback on dorsoventral patterning by spatially organizingHD-ZIPIII... (More)
In plants the dorsoventral boundary of leaves defines an axis of symmetry through thecentre of the organ separating the top (dorsal) and bottom (ventral) tissues. Although thepositioning of this boundary is critical for leaf morphogenesis, how the boundary is established andhow it influences development remains unclear. Using live-imaging and perturbation experimentswe show that leaf orientation, morphology and position are pre-patterned by HD-ZIPIII and KANgene expression in the shoot, leading to a model in which dorsoventral genes coordinate toregulate plant development by localizing auxin response between their expression domains.However we also find that auxin levels feedback on dorsoventral patterning by spatially organizingHD-ZIPIII and KAN expression in the shoot periphery. By demonstrating that the regulation ofthese genes by auxin also governs their response to wounds, our results also provide aparsimonious explanation for the influence of wounds on leaf dorsoventrality. (Less)
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
eLife
pages
32 pages
publisher
eLife Sciences Publications
external identifiers
  • scopus:85038243009
ISSN
2050-084X
DOI
10.7554/eLife.27421.001
language
English
LU publication?
yes
id
3d833623-96c6-437d-b05d-ceba0aa4e4dc
date added to LUP
2019-07-31 16:14:59
date last changed
2024-04-16 17:09:28
@article{3d833623-96c6-437d-b05d-ceba0aa4e4dc,
  abstract     = {{In plants the dorsoventral boundary of leaves defines an axis of symmetry through thecentre of the organ separating the top (dorsal) and bottom (ventral) tissues. Although thepositioning of this boundary is critical for leaf morphogenesis, how the boundary is established andhow it influences development remains unclear. Using live-imaging and perturbation experimentswe show that leaf orientation, morphology and position are pre-patterned by HD-ZIPIII and KANgene expression in the shoot, leading to a model in which dorsoventral genes coordinate toregulate plant development by localizing auxin response between their expression domains.However we also find that auxin levels feedback on dorsoventral patterning by spatially organizingHD-ZIPIII and KAN expression in the shoot periphery. By demonstrating that the regulation ofthese genes by auxin also governs their response to wounds, our results also provide aparsimonious explanation for the influence of wounds on leaf dorsoventrality.}},
  author       = {{Caggiano, Monica Pia and Yu, Xiulian and Bhatia, Neha and Larsson, André and Ram, Hasthi and Ohno, Carolyn K and Sappl, Pia and Meyerowitz, Elliot M and Jönsson, Henrik and Heisler, Marcus G.}},
  issn         = {{2050-084X}},
  language     = {{eng}},
  publisher    = {{eLife Sciences Publications}},
  series       = {{eLife}},
  title        = {{Cell type boundaries organize plant development}},
  url          = {{http://dx.doi.org/10.7554/eLife.27421.001}},
  doi          = {{10.7554/eLife.27421.001}},
  year         = {{2017}},
}