PMC

(A~C) The morphology of mycelia under 1x, 16x, and 16x magnification of a zoom stereomicroscope, respectively; (D~F) The morphology of sclerotia under 5x, 10x, and 16x magnification of a zoom stereomicroscope, respectively. The morphology of mycelia and sclerotia between medium and soil showed significantly different.

MBC, microbial biomass carbon; SOC, soil organic carbon; TN, total nitrogen; C/N, ratio of soil organic carbon to total nitrogen; POC, particulate organic carbon; WSOC, water-soluble organic carbon; NH₄⁺-N, ammonium nitrogen of root; NO₃^—N, nitrate nitrogen of root; NO₂^—N, nitrite nitrogen of root; RV, root volume; RS, root surface; RL, root length; RB, root biomass. Square and circle denote the non-sterilized and sterilized soils, respectively. CK, non-sterilized soil without glucose addition; Glu-1, non-sterilized soil with low level of glucose addition; Glu-2, non-sterilized soil with high level of glucose addition; SS, sterilized soil without glucose addition; SS+Glu-1, sterilized soil with low level of glucose; SS+Glu-2, sterilized soil sterilization with high level of glucose addition.

Morphology of Burkholderia pseudomallei R3E grown in the soil microcosms. The bacteria were grown in the soil microcosms for 30 days and then examined using scanning electron microscopy. Burkholderia pseudomallei R3E cells grown in the control soil (A), in soil supplemented with 0.6% NaCl (B), in soil supplemented with 100 μM of FeSO₄ (C); and in the control soil not inoculated with B. pseudomallei (D). Magnification = 5,000×.

(A) Morphology of soil particles in <2-mm fractions by QICPIC. (B) Morphology of soil particles in ≥2-mm fractions by WinRHIZO.