Is there evidence of optimisation for carbon efficiency in plant proteomes?

Boris R. Jankovic, Cathal Seoighe, May Majed Alquraishi, Christoph A Gehring

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Flowering plants, angiosperms, can be divided into two major clades, monocots and dicots, and while differences in amino acid composition in different species from the two clades have been reported, a systematic analysis of amino acid content and distribution remains outstanding. Here, we show that monocot and dicot proteins have developed distinct amino acid content. In Arabidopsis thaliana and poplar, as in the ancestral moss Physcomitrella patens, the average mass per amino acid appears to be independent of protein length, while in the monocots rice, maize and sorghum, shorter proteins tend to be made of lighter amino acids. An examination of the elemental content of these proteomes reveals that the difference between monocot and dicot proteins can be largely attributed to their different carbon signatures. In monocots, the shorter proteins, which comprise the majority of all proteins, are made of amino acids with less carbon, while the nitrogen content is unchanged in both monocots and dicots. We hypothesise that this signature could be the result of carbon use and energy optimisation in fast-growing annual Poaceae (grasses). © 2011 German Botanical Society and The Royal Botanical Society of the Netherlands.
Original languageEnglish (US)
Pages (from-to)831-834
Number of pages4
JournalPlant Biology
Volume13
Issue number6
DOIs
StatePublished - Jul 25 2011

ASJC Scopus subject areas

  • Plant Science
  • Ecology, Evolution, Behavior and Systematics

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