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Title: Characterising the role of ATSCL26 in root development
Author: Teft, Matt
ISNI:       0000 0004 8497 7328
Awarding Body: University of Warwick
Current Institution: University of Warwick
Date of Award: 2018
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Variations in root phenotype in response to the limiting nutrient nitrogen is of great importance in light of current agricultural challenges. Understanding the molecular processes that determine phenotype can also help further understanding of how root architecture systems are regulated and the overall effect that N has on molecular processes. Links between divergent root systems can also offer answers as to how plants have adapted to meet changes in their environmental conditions over evolutionary time. NSP2 is a Medicago truncatula gene known to regulate processes involved in the formation of nodules in legumes, and has a putative homolog in the non-nodulating plant Arabidopsis thaliana, AtSCL26. This thesis has shown that there is a root system architecture phenotype, as well as a molecular transcriptomic phenotype in atscl26 mutants, and that these phenotypes are nitrogen dependant. AtSCL26 acts to regulate transport of auxin signalling genes in deplete nitrogen conditions, as well as repress other molecular regulatory processes that are involved in regulating growth and root development. Overall AtSCL26 has a repressive effect on root development in nitrogen-deplete conditions, and this is also nitrogen source dependant, as there is a stronger phenotype on potassium nitrate when compared to ammonium nitrate. Overall this investigation suggests that, like NSP2, AtSCL26 could be a nitrogen-regulated transcription factor that coordinates root development according to environmental cues.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: QK Botany