Fig. 4

Genome-based nitrogen metabolism pathways of Halomicrobium sp. ZPS1. Nitrate and nitrite could be reduced to nitrous oxide through a truncated denitrification pathway. Ammonium existing in the vegetables or formed by nitrite assimilatory could be transported into the cytochrome and transformed to l-glutamate, formed l-glutamate, which could participate in glutamate metabolism. Halomicrobium sp. ZPS1 could perform a reductive TCA cycle, and electrons generated from succinate to fumarate could be transferred to denitrification pathways. NarG, nitrite reductase; NirK, cooper-containing nitrite reductase; Nor, nitric oxide reductase; NirA, ferredoxin-nitrite reductase; Amt, ammonia channel protein; glnA, glutamine synthetase; GLT1, glutamate synthase; gdhA, glutamate dehydrogenase