期刊
NEW PHYTOLOGIST
卷 213, 期 3, 页码 1030-1035出版社
WILEY
DOI: 10.1111/nph.14244
关键词
copper (Cu); copper deficiency; copper microRNA; copper prioritization; photosynthesis; squamosa promoter binding protein-like (SPL7)
资金
- Agriculture and Food Research Initiative competitive grant of the USDA National Institute of Food and Agriculture [2012-67-13-19416]
- US National Science Foundation [MCB 1244142]
yCopper (Cu) microRNAs are upregulated by Cu deficiency and mediate the post-transcriptional downregulation of transcripts that encode Cu proteins, suggesting a role directly related to Cu. However, expression and phenotypic analyses of copper microRNA mutants and over-expressors have suggested roles mainly in tolerance to abiotic stresses. To reconcile available data, a model is proposed which emphasizes the mobile nature of copper microRNA molecules in the regulation of Cu homeostasis. It is proposed that the Cu-microRNA regulatory circuits are further co-opted by plants to regulate both beneficial and pathogenic interactions with microbes. Further exploration of Cu-microRNA functions that account for the cell-to-cell mobility should give novel insight into plant microbe interactions and the integration of micronutrition and development.
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