Parent–ofspring confict and transition to crèche phase in Chinstrap Penguins (Pygoscelis antarctica)

• Published in: Polar Biology
• Main Authors: Morandini, Virginia, Viñuela, Javier, Belliure, Josabel, Ferrer, Miguel
• Other Authors: Comisión Interministerial de Ciencia y Tecnología, CICYT (España), Generalitat de Catalunya
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier 2021
• Subjects: Antarc*; Antarctica; Polar Biology; Pygoscelis antarctica
• Online Access: http://hdl.handle.net/10261/249440; https://doi.org/10.1007/s00300-021-02930-4; https://doi.org/10.13039/501100007273; https://doi.org/10.13039/501100002809

The transposon Mutator was first identified in maize, and is one of the most active mobile elements in plants. The Arabidopsis thaliana genome contains at least 200 Mutator-like elements (MULEs), which contain the Mutator-like transposase gene, and often additional genes. We have detected a novel type of MULEs in melon (CUMULE), which, besides the transposase, contains two ubiquitin-like specific protease-like sequences (ULP1). This element is not present in the observed location in some melon cultivars. Multiple copies of this element exist in the Cucumis melo genome, and it has been detected in other Cucurbitaceae species. Analysis of the A. thaliana genome revealed more than 90 CUMULE-like elements, containing one or two Ulp1-like sequences, although no evidence of mobility exists for these elements. We detected various putative transposable elements containing ULP1-like sequences in rice. The discovery of these MULEs in melon and Arabidopsis, and the existence of similar elements in rice and maize, suggest that a proteolytic function may be important for this subset of the MULE transposable elements. This project was funded by grant 2FD97-0286-(02-01) from CICYT and grant 2000FI-00316 to Hans van Leeuwen from CIRIT. This work was carried out within the framework of the Centre de Referència de Biotecnologia, Generalitat de Catalunya. Peer reviewed