During Arabidopsis embryonic development, the cotyledons form from precursors that do not derive from the shoot apical meristem, from which the other leaves form. The role of auxin and the genes involved in this process are unknown. Now, on p. 4063, Treml et al. report a novel Arabidopsis mutant, laterne, in which,unusually, cotyledons are specifically and precisely lost. This mutant carries mutations in PINOID, which helps localise the PIN1 auxin transport facilitator to the apical membrane of meristem epidermal cells, and in ENHANCER OF PINOID (ENP), a novel gene of unknown function. In laterne plants, the authors report, the normal apical localisation of PIN1 is reversed to basal, which is likely to cause apical cells in the embryo to repulse auxin coming from basal cells. Consequently, auxin, which is essential for organ formation, fails to accumulate in the mutant cotyledon primordia. Future studies should elucidate the exact role of ENP in auxin transport.
Reversed auxin transport jams development
Reversed auxin transport jams development. Development 15 September 2005; 132 (18): e1802. doi:
Download citation file:
Advertisement
Cited by
Call for papers: Uncovering Developmental Diversity
Development invites you to submit your latest research to our upcoming special issue: Uncovering Developmental Diversity. This issue will be coordinated by our academic Editor Cassandra Extavour (Harvard University, USA) alongside two Guest Editors: Liam Dolan (Gregor Mendel Institute of Molecular Plant Biology, Austria) and Karen Sears (University of California Los Angeles, USA).
Choose Development in 2024
In this Editorial, Development Editor-in-Chief James Briscoe and Executive Editor Katherine Brown explain how you support your community by publishing in Development and how the journal champions serious science, community connections and progressive publishing.
Journal Meeting: From Stem Cells to Human Development
Register now for the 2024 Development Journal Meeting From Stem Cells to Human Development. Early-bird registration deadline: 3 May. Abstract submission deadline: 21 June.
Pluripotency of a founding field: rebranding developmental biology
This collaborative Perspective, the result of a workshop held in 2023, proposes a set of community actions to increase the visibility of the developmental biology field. The authors make recommendations for new funding streams, frameworks for collaborations and mechanisms by which members of the community can promote themselves and their research.
Read & Publish Open Access publishing: what authors say
We have had great feedback from authors who have benefitted from our Read & Publish agreement with their institution and have been able to publish Open Access with us without paying an APC. Read what they had to say.