Figure 4.19.Cross sections through a woody stem. (A) One-year-old stem. The arrow identifies the location of the cambium. Abundant xylem cells are found toward the center of the stem and a thin layer of phloem cells (P) appears to the outside of the cambium. (B) Three-year-old stem...
aPhylum-level distribution of bacterial communities across the whole dataset. Proteobacteria are shown at the class level. BS: bulk soil; RS: rhizosphere soil; RE: root endosphere; VE: xylem sap; SE: stem endosphere; LE: leaf endosphere; P: phylloplane. BSA: black soils; FSA: fluvo-aquic ...