Genes of Bacillus subtilis 168 that Support Growth of the Cyanobacterium, Synechococcus leopoliensis CCAP1405/1 on Agar Media

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Synechococcus leopoliensis CCAP1405/1 cannot grow on common solid media; however, the strain can grow when co-cultured with Bacillus subtilis 168. Gene-disruptant strains of B. subtilis 168 by pMUTINs at the following sites lost the ability to support the growth of S. leopoliensis CCAP1405/1 on agar media: yxeO and yufO (transporter), yxdK (histidine kinase), sdhC (succinate dehydrogenase), yvgQR (sulfite reductase), acoB (acetoin dehydrogenase), yusE (thioredoxin), yrdA (function unknown). Involvement of the assimilatory sulfate reduction pathway was the suggested reason for loss of the function.