Non-metal, metal and metalloid oxyanions occur naturally in minerals and rocks of the Earth's crust and are mostly found in low concentrations or confined in specific regions of the planet. However, anthropogenic activities including urban development, mining, agriculture, industrial activities and new technologies have increased the release of oxyanions to the environment, which threatens the sustainability of natural ecosystems, in turn affecting human development. For these reasons, the implementation of new methods that could allow not only the remediation of oxyanion contaminants but also the recovery of valuable elements from oxyanions of the environment is imperative. From this perspective, the use of microorganisms emerges as a strategy complementary to physical, mechanical and chemical methods. In this review, we discuss the opportunities that the Pseudomonas genus offers for the bioremediation of oxyanions, which is derived from its specialized central metabolism and the high number of oxidoreductases present in the genomes of these bacteria. Finally, we review the current knowledge on the transport and metabolism of specific oxyanions in Pseudomonas species. We consider that the Pseudomonas genus is an excellent starting point for the development of biotechnological approaches for the upcycling of oxyanions into added-value metal and metalloid byproducts.

中文翻译：

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假单胞菌在氧阴离子生物修复中的潜力

非金属、金属和准金属氧阴离子天然存在于地壳的矿物和岩石中，并且大多以低浓度存在或局限在地球的特定区域。然而，包括城市发展、采矿、农业、工业活动和新技术在内的人为活动增加了向环境中释放的氧阴离子，这威胁到自然生态系统的可持续性，进而影响人类发展。由于这些原因，实施不仅可以修复氧阴离子污染物，而且可以从环境的氧阴离子中回收有价值元素的新方法势在必行。从这个角度来看，使用微生物作为一种补充物理、机械和化学方法的策略出现了。在本次审查中，假单胞菌属提供氧阴离子的生物修复，这源于其特殊的中心代谢和这些细菌基因组中存在的大量氧化还原酶。最后，我们回顾了当前关于假单胞菌属物种中特定氧阴离子的转运和代谢的知识。我们认为，假单胞菌属是开发生物技术方法以将氧阴离子升级为增值金属和准金属副产品的绝佳起点。