Zn deficiency in Brassica napus induces Mo and Mn accumulation associated with chloroplast proteins variation without Zn remobilization

Plant Physiol Biochem. 2015 Jan:86:66-71. doi: 10.1016/j.plaphy.2014.11.005. Epub 2014 Nov 6.

Abstract

The importance of zinc (Zn) has been of little concern in human nutrition despite a strong decrease of this element in crops since the rise of high yielding varieties. For better food quality, Zn biofortification can be used, but will be optimal only if mechanisms governing Zn management are better known. Using Zn deficiency, we are able to demonstrate that Zn is not remobilized in Brassica napus (B. napus). Thus, remobilization processes should not be targeted by biofortification strategies. This study also complemented previous work by investigating leaf responses to Zn deficiency, especially from proteomic and ionomic points of view, showing for example, an increase in Manganese (Mn) content and of the Mn-dependent protein, Oxygen Evolving Enhancer.

Keywords: Ionomic; Manganese; Molybdenum; Proteomic; Remobilization; Zinc deficiency.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biological Transport
  • Biomass
  • Brassica napus / growth & development
  • Brassica napus / metabolism*
  • Chloroplast Proteins / metabolism*
  • Electrophoresis, Gel, Two-Dimensional
  • Manganese / metabolism*
  • Molybdenum / metabolism*
  • Plant Leaves / growth & development
  • Plant Leaves / metabolism
  • Plant Proteins / metabolism
  • Plant Roots / genetics
  • Plant Roots / metabolism
  • Proteome / metabolism
  • Proteomics / methods
  • Zinc / deficiency
  • Zinc / metabolism*

Substances

  • Chloroplast Proteins
  • Plant Proteins
  • Proteome
  • Manganese
  • Molybdenum
  • Zinc