Uncertain role of MtSEO-F3 in assembly of Medicago truncatula forisomes

Plant Signaling & Behavior
Sira GroscurthGundula A Noll

Abstract

Forisomes are specialized multimeric protein complexes found only in the papilionoid legumes. They undergo a reversible conformational change in response to phloem injury to enable the occlusion of sieve tubes, thus preventing the loss of photoassimilates. The individual subunits are designated by the letters SEO-F (sieve element occlusion by forisomes) and are part of the larger SEO protein family, which also includes the typical P-proteins found in most dicots and some monocots. When specific SEO-F subunits from different species are expressed in a heterologous background, they self-assemble into fully-functional artificial forisomes. However, with the exception of basal species such as Dipteryx panamensis, the geometry of these artificial forisomes differs from that of their native counterparts. Studies involving SEO-F proteins from the model legume Medicago truncatula have shown that a combination of 3 of the 4 subunits can fine-tune the geometry of artificial forisomes. However, MtSEO-F3 was excluded from these studies because it was not incorporated into either the native or artificial forisomes in our original experiments. In this addendum, we present further data concerning the interactive properties of the SEO-F protei...Continue Reading

References

Mar 1, 2003·The Plant Journal : for Cell and Molecular Biology·Olivier VoinnetDavid Baulcombe
Aug 28, 2003·Nature Materials·Michael KnoblauchWinfried S Peters
Jul 25, 2006·Nature Methods·Guido JachJoachim F Uhrig
Aug 19, 2007·Plant Molecular Biology·Gundula A NollDirk Prüfer
Sep 12, 2008·Plant & Cell Physiology·Hélène C PélissierMichael Knoblauch
Mar 23, 2011·Plant Signaling & Behavior·Antonia M ErnstGundula A Noll
Apr 4, 2012·Plant & Cell Physiology·James A AnsteadGary A Thompson
Jun 27, 2012·Proceedings of the National Academy of Sciences of the United States of America·Antonia M ErnstGundula A Noll
Oct 18, 2012·Plant Signaling & Behavior·Stephan B JekatDirk Prüfer
Jul 11, 2013·Frontiers in Plant Science·Stephan B JekatDirk Prüfer

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