4.7 Article

Genes for iron-sulphur cluster assembly are targets of abiotic stress in rice, Oryza sativa

Journal

PLANT CELL AND ENVIRONMENT
Volume 37, Issue 3, Pages 780-794

Publisher

WILEY
DOI: 10.1111/pce.12198

Keywords

Fe-S cluster assembly genes; iron homeostasis; rice

Categories

Funding

  1. 100-Talent Program of Chinese Academy of Sciences
  2. National Basic Research Program of China (973 Program) [2013CB127102]
  3. Foundation of Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences

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Iron-sulphur (Fe-S) cluster assembly occurs in chloroplasts, mitochondria and cytosol, involving dozens of genes in higher plants. In this study, we have identified 41 putative Fe-S cluster assembly genes in rice (Oryza sativa) genome, and the expression of all genes was verified. To investigate the role of Fe-S cluster assembly as a metabolic pathway, we applied abiotic stresses to rice seedlings and analysed Fe-S cluster assembly gene expression by qRT-PCR. Our data showed that genes for Fe-S cluster assembly in chloroplasts of leaves are particularly sensitive to heavy metal treatments, and that Fe-S cluster assembly genes in roots were up-regulated in response to iron toxicity, oxidative stress and some heavy metal assault. The effect of each stress treatment on the Fe-S cluster assembly machinery demonstrated an unexpected tissue or organelle specificity, suggesting that the physiological relevance of the Fe-S cluster assembly is more complex than thought. Furthermore, our results may reveal potential candidate genes for molecular breeding of rice.

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