Figure 6.

Colonization parameters of pre-treated lumichrome roots of lotus and tomato. (A) Untreated control and (B) lumichrome pre-treated lotus roots following 18 days post-infection (dpi) with M. loti. Little arrow heads indicate the presence of nodules. Close-up of (C) control and (D) pre-treated nodules from lotus 18 dpi. (E) Time-course (58 days) of nodule development in lotus following pre-treatment with lumichrome (white circle) or without (black circle). (F–I) Mycorrhization parameters of (F) frequency of mycorrhiza In the root system (%F), (G) intensity of mycorrhizal colonization in the root system (%M), (H) arbuscule abundance in mycorrhizal parts of root fragments (%a) and (I) arbuscule abundance in the root system (%A) of tomato root controls (black bar) and pre-treated with lumichrome (gray bar) at 28 and 58 days after inoculation with Glomus spp. The values are the average ± SE for four independent replicates [of 15 root fragments each, (F–I)] and an asterisk indicates a value that was determined by Student’s t-test (P < 0.05) to be significantly different from the control. nd, not detected.