Cell-to-cell movement of mitochondria in plants

Gurdon, C, Svab Z, Feng Y, Kumar D, Maliga P.  2016.  

Journal:

Proc Natl Acad Sci U S A

Volume Number:

113

Pages:

3395-400

Abstract:

We report cell-to-cell movement of mitochondria through a graft junction. Mitochondrial movement was discovered in an experiment designed to select for chloroplast transfer fromNicotiana sylvestrisintoNicotiana tabacumcells. The alloplasmicN. tabacumline we used carriesNicotiana undulatacytoplasmic genomes, and its flowers are male sterile due to the foreign mitochondrial genome. Thus, rare mitochondrial DNA transfer fromN. sylvestristoN. tabacumcould be recognized by restoration of fertile flower anatomy. Analyses of the mitochondrial genomes revealed extensive recombination, tentatively linking male sterility toorf293, a mitochondrial gene causing homeotic conversion of anthers into petals. Demonstrating cell-to-cell movement of mitochondria reconstructs the evolutionary process of horizontal mitochondrial DNA transfer and enables modification of the mitochondrial genome by DNA transmitted from a sexually incompatible species. Conversion of anthers into petals is a visual marker that can be useful for mitochondrial transformation.

Notes:

Gurdon, CsanadSvab, ZoraFeng, YapingKumar, DibyenduMaliga, Paleng2016/03/10 06:00Proc Natl Acad Sci U S A. 2016 Mar 22;113(12):3395-400. doi: 10.1073/pnas.1518644113. Epub 2016 Mar 7.

Related External URL:

http://www.ncbi.nlm.nih.gov/pubmed/26951647
Citation:
Gurdon, C, Svab Z, Feng Y, Kumar D, Maliga P.  2016.  Cell-to-cell movement of mitochondria in plants. Proc Natl Acad Sci U S A. 113:3395-400.