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SnRK1 and trehalose 6-phosphate – two ancient pathways converge to regulate plant metabolism and growth
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Orientador(es)
Resumo(s)
SUCROSE-NON-FERMENTING1-RELATED KINASE1 (SnRK1) belongs to a family of protein
kinases that originated in the earliest eukaryotes and plays a central role in energy and
metabolic homeostasis. Trehalose 6-phosphate (Tre6P) is the intermediate of trehalose
biosynthesis, and has even more ancient roots, being found in all three domains of life –
Archaea, Bacteria and Eukarya. In plants, the function of SnRK1 has diverged from its
orthologues in fungi and animals, evolving new roles in signalling of nutrient status and abiotic
stress. Tre6P has also acquired a novel function in plants as a signal and homeostatic regulator
of sucrose, the dominant sugar in plant metabolism. These two ancient pathways have
converged in a unique way in plants, enabling them to coordinate their metabolism, growth
and development with their environment, which is essential for their autotrophic and sessile
lifestyle
Descrição
Palavras-chave
energy homeostasis SnRK1 sucrose trehalose 6-phosphate trehalose 6- phosphate synthase
Contexto Educativo
Citação
Editora
Elsevier