Genome-scale transfer of mitochondrial DNA from legume hosts to the holoparasite Lophophytum mirabile (Balanophoraceae)
| Autor: | M. Virginia Sanchez-Puerta, Alejandro Edera, Katharine A. Howell, Ian Small, Paul G. Nevill, Anna V. Williams, Carolina L. Gandini |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0301 basic medicine Mitochondrial DNA Gene Transfer Horizontal Balanophoraceae Biología DNA Mitochondrial 010603 evolutionary biology 01 natural sciences Genome Ciencias Biológicas Evolution Molecular 03 medical and health sciences Intergenic region MTDNA Genetics LOPHOPHYTUM Molecular Biology Gene Ecology Evolution Behavior and Systematics 2. Zero hunger Likelihood Functions biology HGT Fabaceae biology.organism_classification EVOLUTION Obligate parasite 030104 developmental biology mitochondrial fusion ACACIA Evolutionary biology Genome Mitochondrial Horizontal gene transfer HOLOPARASITE Sequence Alignment CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Molecular Phylogenetics and Evolution. 132:243-250 |
| ISSN: | 1055-7903 |
| Popis: | Angiosperm mitochondrial horizontal gene transfer (HGT) has been widely reported during the past decades. With a few exceptions, foreign sequences are mitochondrial genes or intronic regions from other plants, indicating that HGT has played a major role in shaping mitochondrial genome evolution. Host-parasite relationships are a valuable system to study this phenomenon due to the high frequency of HGT. In particular, the interaction between mimosoid legumes and holoparasites of the genus Lophophytum represents an outstanding opportunity to discern HGT events. The mitochondrial genome of the holoparasite L. mirabile has remarkable properties, the most extraordinary of which is the presence of 34 out of 43 mitochondrial protein genes acquired from its legume host, with the stunning replacement of up to 26 native homologs. However, the origin of the intergenic sequences that represent the majority (>90%) of the L. mirabile mtDNA remains largely unknown. The lack of mitochondrial sequences available from the donor angiosperm lineage (mimosoid legumes) precluded a large-scale evolutionary study. We sequenced and assembled the mitochondrial genome of the mimosoid Acacia ligulata and performed genome wide comparisons with L. mirabile. The A. ligulata mitochondrial genome is almost 700 kb in size, encoding 60 genes. About 60% of the L. mirabile mtDNA had greatest affinity to members of the family Fabaceae (∼49% to mimosoids in particular) with an average sequence identity of ∼96%, including genes but mostly intergenic regions. These findings strengthen the mitochondrial fusion compatibility model for angiosperm mitochondrion-to-mitochondrion HGT. Fil: Sánchez Puerta, María Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina Fil: Edera, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina Fil: Gandini, Carolina Lia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Biología Agrícola de Mendoza. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Instituto de Biología Agrícola de Mendoza; Argentina Fil: Williams, Anna V.. University of Western Australia; Australia Fil: Howell, Katharine A.. University of Western Australia; Australia Fil: Nevill, Paul G.. Curtin University; Australia. University of Western Australia; Australia Fil: Small, Ian David. University of Western Australia; Australia |
| Databáze: | OpenAIRE |
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