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Understanding signalling networks underpinning key developmental processes during plant evolution

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  • Full or part time
    Dr Juliet Coates
  • Application Deadline
    Applications accepted all year round
  • Competition Funded PhD Project (European/UK Students Only)
    Competition Funded PhD Project (European/UK Students Only)

Project Description

Plants first appeared on land almost half a billion years ago. All land plants likely evolved from a single aquatic green algal ancestor. The first land plants overcame huge stress challenges in the form of desiccation, UV light and the effects of gravity in the absence of water. In a relatively short space of time land plants inhabited nearly every ecological niche across the globe. The morphology of land plants became more complex enabling the appearance of larger plants.

There are two overarching questions that can be addressed by a MIBTP PhD project.
1) How were the first plants able to "move" and distribute themselves, whilst evolving into new species able to inhabit a diverse range of ecological niches? This distribution underpinned the evolution of animals on land and contributed to the formation of soils. We know that the early-diverging plant distribution by spores, via the germination process, has both similarities and key differences with seed germination in flowering plants. Understanding these differences will tell us how environmental sensing mechanisms and the germination process evolved in economically important plant species and will suggest new ways of regulating plant sensing mechanisms and seed biology.
2) How did morphological complexity evolve in land plants? Land plants became larger and more complex over time. Our previous research shows that some key developmental regulators are conserved between the model plants Physcomitrella (moss), Arabidopsis (model angiosperm) and crop species (including tomato and rice), while others have acquired new and divergent roles. We use Physcomitrella and Arabidopsis to understand detailed cellular mechanisms of plant development so that we can apply this knowledge to generate crops with improved traits (architecture, stress resistance) and understand evolution of these traits.
A PhD project would involve either a forward-genetic screen in an early-diverging land plant (moss) to uncover a novel germination-regulatory signalling pathway, or a reverse-genetic/molecular-genetic approach identifying new plant developmental regulators. In each case, genes identified would have their functions compared in moss, Arabidopsis and crops using molecular-genetic evo-devo approaches. The exact project would depend on the candidate’s expertise and the preliminary data generated in the lab between now and the start of the project.

Funding Notes

This project is part of the MIBTP training programme.

References

Vesty EF et al. (2016) The decision to germinate is regulated by divergent molecular networks in spores and seeds. New Phytologist, doi 10.1111/nph.14018

Moody LA et al. (2016) An ancient and conserved function for Armadillo-related proteins in the control of spore and seed germination by abscisic acid. New Phytologist doi: 10.1111/nph.13938

How good is research at University of Birmingham in Biological Sciences?

FTE Category A staff submitted: 42.80

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