The Evolutionary Fate of the Horizontally Transferred Agrobacterial Mikimopine Synthase Gene in the Genera Nicotiana and Linaria

0440147 - BFÚ 2015 RIV US eng J - Journal Article
Kováčová, Viera - Žlůvová, Jitka - Janoušek, Bohuslav - Talianová, Martina - Vyskot, Boris
The Evolutionary Fate of the Horizontally Transferred Agrobacterial Mikimopine Synthase Gene in the Genera Nicotiana and Linaria.
PLoS ONE. Roč. 9, č. 11 (2014). ISSN 1932-6203. E-ISSN 1932-6203
R&D Projects: GA ČR(CZ) GBP501/12/G090
Institutional support: RVO:68081707
Keywords : BAYESIAN PHYLOGENETIC INFERENCE * MAXIMUM-LIKELIHOOD * MAXIMUM-LIKELIHOOD
Subject RIV: BO - Biophysics
Impact factor: 3.234, year: 2014

Few cases of spontaneously horizontally transferred bacterial genes into plant genomes have been described to date. The occurrence of horizontally transferred genes from the T-DNA of Agrobacterium rhizogenes into the plant genome has been reported in the genus Nicotiana and in the species Linaria vulgaris. Here we compare patterns of evolution in one of these genes (a gene encoding mikimopine synthase, mis) following three different events of horizontal gene transfer (HGT). As this gene plays an important role in Agrobacterium, and there are known cases showing that genes from pathogens can acquire plant protection function, we hypothesised that in at least some of the studied species we will find signs of selective pressures influencing mis sequence. The mikimopine synthase (mis) gene evolved in a different manner in the branch leading to Nicotiana tabacum and N. tomentosiformis, in the branch leading to N. glauca and in the genus Linaria. Our analyses of the genus Linaria suggest that the mis gene began to degenerate soon after the HGT.
Permanent Link: http://hdl.handle.net/11104/0243298