Sinyakin D. N. RussiaSaratov State University , 83, Astrakhanskaya str., Saratov, 410012, Russia diman.sinyakin@yandex.ru Author's articles Analysis of Protease Effect on Biofilm Structure of Azospirillum Brasilense Strain Sp245 and Its Flagellation-Defective mmsB1 and fabG1 Mutants