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https://doi.org/10.1016/j.fgb.2009.12.006
Copy DOIJournal: Fungal Genetics and Biology | Publication Date: Dec 23, 2009 |
Citations: 18 |
Transcriptional analysis using qRT-PCR of 62 metal ion transporters during conidial germination of Neurospora crassa showed a significant up regulation of a hypothetical copper transporter gene, tcu-1, that belongs to the Ctr family. Herein we characterised the Ctr family genes ( tcu- 1, tcu- 2 and tcu- 3) and deciphered their role in various developmental phases of the N. crassa life cycle. Cross complementation assays in copper uptake mutant of Saccharomyces cerevisiae revealed that tcu-1, tcu-2 and tcu-3 are functional homologs of S. cerevisiae copper transporters. Expression studies of Ctr family members in various developmental phases of N. crassa showed differential expression pattern for high-affinity copper transporter, TCU1. Functional analysis of their gene knockout mutants showed that tcu- 1 is essential for saprophytic conidial germination, vegetative growth and perithecia development under copper limited conditions while conidiation remained unaffected.
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