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Fig. 2 | BMC Microbiology

Fig. 2

From: Saline and alkaline stresses alter soil properties and composition and structure of gene-based nitrifier and denitrifier communities in a calcareous desert soil

Fig. 2

Effects of different types of salt and alkali stresses on gene copy numbers (no. g− 1 dry soil (× 106 or 107)) of different soil bacterial communities involved in nitrification and denitrification in a calcareous desert soil. a amoA-AOA, b amoA-AOB, c amoA-AOA/amoA-AOB ratio, d nirK, e nirS, and f nosZ.. Columns and error bars represent the mean ± standard error (n = 3), respectively. CK, control treatment without salt or alkali stress; CS, NaCl stress treatment; SS, Na2SO4 stress treatment; AS, Na2CO3 + NaHCO3 stress treatment

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BMC Microbiology

ISSN: 1471-2180

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