Effect on Soil Properties of BcWRKY1 Transgenic Maize with Enhanced Salinity Tolerance

Figure 5

Activities of four enzymes in rhizosphere soil at different sampling times. (a) Alkaline phosphatase activity; (b) urease activity; (c) dehydrogenase activity; (d) sucrase activity. WT, wild-type maize LH1037; WL-73, LH1037 plant transformed with BcWRKY1; V3, the three lowest leaves have a visible collar; V9, nine leaves have collars present; R1, silking; R6, physiological maturity. indicates a significant difference at according to the LSD test (). The standard error is based on the average of three biological replicates. Note: during the three years of this study, there were no overall significant differences () in the alkaline phosphatase, urease, dehydrogenase, or sucrase activity in rhizosphere soil of WL-73 and WT plants in two soil environments (saline or nonsaline) or at four growth stages (V3, V9, R1, and R6). In addition, the activities of these four soil enzymes were not significantly different between WL-73 and WT plants in some soil environments, years, and growth stages.

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