Fig. 2
From: Quantitative fermentation of unpretreated transgenic poplar by Caldicellulosiruptor bescii
Images of poplar stems with and without solubilization by C. bescii. Six-month-old stem segments were incubated for 7 days at 25 °C (25 °C control), at 65 °C without C. bescii (abiotic control), or at 65 °C with C. bescii. a End view of stems before and after treatment indicating the level of degradation. b Low-magnification and c high-magnification scanning electron microscopic images of stem cross-sections showing splits, fragmentations, and the effects of lignin modification and C. bescii solubilization on the xylem cell wall fibers. d Comparison of longitudinal xylem fiber cell surfaces for different treatments
