Morphoanatomical and Biochemical Changes in the Roots of Rice Plants Induced by Plant Growth-Promoting Microorganisms

Figure 2

Electromicrographs of adventitious roots of rice obtained from seeds treated with PGPMs, 21 days following sowing. (a1–a3) T. asperellum (T-06, T-09, T-12, and T-52), (b1–b3) B. pyrrocinia + P. fluorescens, (c1–c3) B. pyrrocinia, (d1–d3) P. fluorescens, (e1–e3) T. asperellum (T-06, T-09, T-12, and T-52) + B. pyrrocinia + P. fluorescens, and (f1–f3) control. Epidermis with root hairs (ep), cortex (co), aerenchyma lacunae (LA), exodermis (ex), vascular cylinder (vc), protoxylem poles (arrows), and metaxylem vessel elements (mx).