High-resolution genome-wide scan of genes, gene-networks and cellular systems impacting the yeast ionome

Danni Yu, John M C Danku, Ivan Baxter, Sungjin Kim, Olena K. Vatamaniuk, Olga Vitek, Mourad Ouzzani, David E. Salt

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Background: To balance the demand for uptake of essential elements with their potential toxicity living cells have complex regulatory mechanisms. Here, we describe a genome-wide screen to identify genes that impact the elemental composition ('ionome') of yeast Saccharomyces cerevisiae. Using inductively coupled plasma - mass spectrometry (ICP-MS) we quantify Ca, Cd, Co, Cu, Fe, K, Mg, Mn, Mo, Na, Ni, P, S and Zn in 11890 mutant strains, including 4940 haploid and 1127 diploid deletion strains, and 5798 over expression strains.Results: We identified 1065 strains with an altered ionome, including 584 haploid and 35 diploid deletion strains, and 446 over expression strains. Disruption of protein metabolism or trafficking has the highest likelihood of causing large ionomic changes, with gene dosage also being important. Gene over expression produced more extreme ionomic changes, but over expression and loss of function phenotypes are generally not related. Ionomic clustering revealed the existence of only a small number of possible ionomic profiles suggesting fitness tradeoffs that constrain the ionome. Clustering also identified important roles for the mitochondria, vacuole and ESCRT pathway in regulation of the ionome. Network analysis identified hub genes such as PMR1 in Mn homeostasis, novel members of ionomic networks such as SMF3 in vacuolar retrieval of Mn, and cross-talk between the mitochondria and the vacuole. All yeast ionomic data can be searched and downloaded at http://www.ionomicshub.org.Conclusions: Here, we demonstrate the power of high-throughput ICP-MS analysis to functionally dissect the ionome on a genome-wide scale. The information this reveals has the potential to benefit both human health and agriculture.

Original languageEnglish
Article number623
JournalBMC Genomics
Volume13
Issue number1
DOIs
Publication statusPublished - 14 Nov 2012

Fingerprint

Gene Regulatory Networks
Haploidy
Vacuoles
Diploidy
Cluster Analysis
Mass Spectrometry
Mitochondria
Yeasts
Genome
Gene Dosage
Agriculture
Genes
Saccharomyces cerevisiae
Homeostasis
Phenotype
Gene Expression
Health
Proteins

Keywords

  • Clustering
  • ESCRT
  • Genome-wide
  • ICP-MS
  • Ionome
  • Ionomics
  • Mitochondria
  • Network analysis
  • Vacuole
  • Yeast

ASJC Scopus subject areas

  • Biotechnology
  • Genetics

Cite this

Yu, D., Danku, J. M. C., Baxter, I., Kim, S., Vatamaniuk, O. K., Vitek, O., ... Salt, D. E. (2012). High-resolution genome-wide scan of genes, gene-networks and cellular systems impacting the yeast ionome. BMC Genomics, 13(1), [623]. https://doi.org/10.1186/1471-2164-13-623

High-resolution genome-wide scan of genes, gene-networks and cellular systems impacting the yeast ionome. / Yu, Danni; Danku, John M C; Baxter, Ivan; Kim, Sungjin; Vatamaniuk, Olena K.; Vitek, Olga; Ouzzani, Mourad; Salt, David E.

In: BMC Genomics, Vol. 13, No. 1, 623, 14.11.2012.

Research output: Contribution to journalArticle

Yu, Danni ; Danku, John M C ; Baxter, Ivan ; Kim, Sungjin ; Vatamaniuk, Olena K. ; Vitek, Olga ; Ouzzani, Mourad ; Salt, David E. / High-resolution genome-wide scan of genes, gene-networks and cellular systems impacting the yeast ionome. In: BMC Genomics. 2012 ; Vol. 13, No. 1.
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