The sugar responsive circadian clock regulator bZIP63 modulates plant growth
| العنوان: | The sugar responsive circadian clock regulator bZIP63 modulates plant growth |
|---|---|
| المؤلفون: | Marina C. M. Martins, Elodie Gilbault, Cleverson Carlos Matiolli, David Wells Newman, Carlos Takeshi Hotta, Michel Vincentz, Américo José Carvalho Viana, João G. P. Vieira, Camila Caldana, Gustavo Turqueto Duarte |
| المصدر: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physiology, Starch, Photoperiod, Mutant, Circadian clock, Arabidopsis, Regulator, Plant Science, Protein Serine-Threonine Kinases, medicine.disease_cause, chemistry.chemical_compound, Gene Expression Regulation, Plant, Circadian Clocks, medicine, Arabidopsis thaliana, AMIDO, Circadian rhythm, Mutation, biology, Arabidopsis Proteins, food and beverages, biology.organism_classification, Circadian Rhythm, Cell biology, Basic-Leucine Zipper Transcription Factors, chemistry, Sugars |
| الوصف: | Adjustment to energy starvation is crucial to ensure growth and survival. In Arabidopsis thaliana (Arabidopsis), this process relies in part on the phosphorylation of the circadian clock regulator bZIP63 by SUCROSE non-fermenting RELATED KINASE1 (SnRK1), a key mediator of responses to low energy. We investigated the effects of mutations in bZIP63 on plant carbon (C) metabolism and growth. Results from phenotypic, transcriptomic and metabolomic analysis of bZIP63 mutants prompted us to investigate the starch accumulation pattern and the expression of genes involved in starch degradation and in the circadian oscillator. bZIP63 mutation impairs growth under light-dark cycles, but not under constant light. The reduced growth likely results from the accentuated C depletion towards the end of the night, which is caused by the accelerated starch degradation of bZIP63 mutants. The diel expression pattern of bZIP63 is dictated by both the circadian clock and energy levels, which could determine the changes in the circadian expression of clock and starch metabolic genes observed in bZIP63 mutants. We conclude that bZIP63 composes a regulatory interface between the metabolic and circadian control of starch breakdown to optimize C usage and plant growth. |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb83719d1ce4003fe7d3a162183dc5db |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....fb83719d1ce4003fe7d3a162183dc5db |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |