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Table 3 Number of operational taxonomic units (OTUs), sequences, and coverages of the genes used to identify nitrifier and denitrifier communities under salt and alkali stresses in a calcareous desert soil

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

Treatments OTUs Sequences Coverages
amoA-AOA amoA-AOB nirK nirS nosZ amoA-AOA amoA-AOB nirK nirS nosZ amoA-AOA amoA-AOB nirK nirS nosZ
CK 31 a 324 a 377 a 285 b 178 c 37,110 a 42,345 b 51,095 b 29,293 a 33,242 b 0.9998 0.9954 0.9980 0.9979 0.9993
CS 34 a 312 a 270 b 310 b 232 b 40,672 a 35,221 c 56,195 a 28,503 a 40,047 a 0.9998 0.9948 0.9983 0.9975 0.9986
SS 36 a 271 b 284 b 353 a 314 a 39,192 a 48,961 a 52,321 b 29,144 a 39,112 a 0.9998 0.9953 0.9982 0.9973 0.9979
AS 33 a 165 c 336 a 348 a 295 a 40,583 a 40,662 b 50,138 b 28,254 a 39,385 a 0.9999 0.9978 0.9980 0.9973 0.9985
  1. CK, control treatment without salt or alkali stress; CS, NaCl stress treatment; SS, Na2SO4 stress treatment; and AS, Na2CO3 + NaHCO3 stress treatment. Different lowercase letters in the same column indicate significant differences among treatments (P < 0.05)