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Abscisic acid and the mechanisms that regulate hydrotropism

Obiettivo

Despite ABA being the most important phytohormone in the response of plants to drought stress little is known about how water
deficits are perceived by plants. Although ABA has been traditionally described as a growth inhibitor, different reports
have shown a role for ABA promoting growth. Under water stress ABA inhibits shoot growth and maintains root growth in
order to guarantee water uptake. In fact, roots grow towards zones with higher water contents and this response is called
hydrotropism. This project is focused on the study of the mechanisms that link the perception of water deficits in the soil with
the adaptive responses caused by ABA that are directed to ensure plant survival. The identification of the mechanism by
which an environmental signal causes a modification of root growth will be investigated. The discovery of
the elements responsible for transmitting the water deficit signal and the proteins involved in this signaling pathway
will compose the first part of the project. Next, the creation of multiscale models capturing the response integrating dynamic
changes in ABA response, biomechanics and root growth in response to hydrotropic stimuli as well as the use of non invasive
micro CT imaging of root systems will help to understand how plants respond to osmotic gradients in soil. The study of the
mechanisms that regulate root growth and bending will help create useful tools directed to reduce crop losses
caused by this stress. The experience of the researcher in the field of ABA will help to create an integrative point of view of
the role of this hormone in the context of growth regulation. The availability of modeling, genetic and imaging techniques as
well as the long experience of Prof. Malcolm Bennett in the study of gravitropism and auxin regulated plant
growth makes The Center for Plant Integrative Biology an excellent setting to investigate this biological process.

Invito a presentare proposte

FP7-PEOPLE-2012-IEF
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Coordinatore

THE UNIVERSITY OF NOTTINGHAM
Contributo UE
€ 221 606,40
Indirizzo
University Park
NG7 2RD Nottingham
Regno Unito

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Regione
East Midlands (England) Derbyshire and Nottinghamshire Nottingham
Tipo di attività
Higher or Secondary Education Establishments
Contatto amministrativo
Paul Cartledge (Mr.)
Collegamenti
Costo totale
Nessun dato