In association with lichens, bacteria can play key roles in solubilizing sources of inorganic phosphates that are available in the environment. In this study, the potential of bacteria isolated from 15 Antarctic lichen samples for phosphate solubilization was investigated. From 124 bacteria tested, 66 (53%) were positive for phosphate solubilization in solid NBRIP medium, with a higher prevalence of Pseudomonas, followed by Caballeronia and Chryseobacterium. Most of the phosphate-solubilizing bacteria were isolated from Usnea auratiacoatra, followed by Caloplaca regalis and Xanthoria candelaria. Two isolates showed outstanding performance, Pseudomonas sp. 11.LB15 and Pseudomonas sp. 1.LB34, since they presented solubilization in the temperature range from 15.0 to 30.0 °C, and maximum quantification of soluble phosphate at 25.0 °C was 511.21 and 532.07 mg/L for Pseudomonas sp. 11.LB15 and Pseudomonas sp. 1.LB34, respectively. At 30.0 °C soluble phosphate yield was 639.43 and 518.95 mg/L with pH of 3.74 and 3.87 for Pseudomonas sp. 11.LB15 and Pseudomonas sp. 1.LB34, respectively. Fumaric and tartaric acids were released during the solubilization process. Finally, bacteria isolated from Antarctic lichens were shown to have the potential for phosphate solubilization, opening perspectives for future application in the agricultural sector and contributing to reduce the use of chemical fertilizers.

与地衣相关，细菌可以在溶解环境中可用的无机磷酸盐来源中发挥关键作用。在这项研究中，研究了从15个南极地衣样品中分离出的细菌溶解磷酸盐的潜力。从测试124个细菌，66（53％）为阳性在固体NBRIP培养基溶磷，与发病率较高假单胞菌，随后Caballeronia和金黄杆菌。大部分可溶解磷酸盐的细菌均分离自松萝（Usnea auratiacoatra），其次是产自Caloplaca regalis和Canantaria Xanthoria。两种分离株表现出色，假单胞菌sp。11.LB15和假单胞菌属。1.LB34，因为它们在15.0至30.0°C的温度范围内均具有增溶作用，因此在25.0°C时对假单胞菌sp。的可溶性磷酸盐的最大定量为511.21和532.07 mg / L。11.LB15和假单胞菌属。1.LB34，分别。在30.0℃下可溶于磷酸盐产率为639.43和518.95毫克/升与3.74的pH和3.87假单胞菌属。11.LB15和假单胞菌sp。1.LB34，分别。富马酸和酒石酸在溶解过程中释放。最后，从南极地衣中分离出来的细菌被证明具有磷酸盐增溶的潜力，为今后在农业领域的应用开辟了前景，并有助于减少化学肥料的使用。