eEF1A is encoded by a unique gene in the filamentous fungus Podospora anserina. We show here that (1) this gene is essential for vegetative growth, (2) readthrough at UGA stop codon level is positively correlated with eEF1A level, (3) eEF1A level is regulated in P. anserina. (4) Increasing eEF1A gene dosage does not modify P. anserina life cycle parameters, especially longevity is not changed. These data confirm and extend those previously obtained in yeast and Drosophila.
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The plant elongation factor eEF1A is involved in coregulating not only the translation of proteins and controlling translation-related signaling but also in signaling associated with cell growth, stress response and motility, controlling apoptosis and responding to adversity in plants. In this study, four eEF1A genes, namely, ClEF1A-1, ClEF1A-2, ClEF1A-3 and ClEF1A-4, were identified from the genomic and ubiquitin-modified omics data of the 'Xiangshui Lemon', and bioinformatics analysis revealed that these four genes have relatively similar structures with conserved sequences; ClEF1A-1 and ClEF1A-4 were highly expressed in pollen, and temporal expression analysis demonstrated that the expression of ClEF1As was significantly greater under self-pollination than under cross-pollination. All four genes were localized in the nucleus.
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