MERE1, a low-copy-number copia-type retroelement in Medicago truncatula active during tissue culture.
We have identified an active Medicago truncatula copia-like retroelement called Medicago RetroElement1-1 (MERE1-1) as an insertion in the symbiotic NSP2 gene. MERE1-1 belongs to a low-copy-number family in the sequenced Medicago genome. These copies are highly related, but only three of them have a complete coding region and polymorphism exists between the long terminal repeats of these different copies. This retroelement family is present in all M. truncatula ecotypes tested but also in other legume species like Lotus japonicus. It is active only during tissue culture in both R108 and Jemalong Medicago accessions and inserts preferentially in genes.
Rakocevic
Alexandra
A
Institut des Sciences du Végétal, CNRS, 91198 Gif sur Yvette, France.
Mondy
Samuel
S
Tirichine
Leïla
L
Cosson
Viviane
V
Brocard
Lysiane
L
Iantcheva
Anelia
A
Cayrel
Anne
A
Devier
Benjamin
B
Abu El-Heba
Ghada Ahmed
GA
Ratet
Pascal
P
D001483:Base Sequence; D002478:Cells, Cultured; D019295:Computational Biology; D019175:DNA Methylation; D018744:DNA, Plant / Q000235:genetics; D018628:Gene Dosage; D046913:Medicago truncatula / Q000235:genetics*; D008969:Molecular Sequence Data; D016254:Mutagenesis, Insertional; D011110:Polymorphism, Genetic; D018626:Retroelements; D017422:Sequence Analysis, DNA; D020079:Terminal Repeat Sequences
D018744:DNA, Plant; D018626:Retroelements