Large root u ith bacterial cells and 

 filaments of actin()m\cetes 



V 



^■«*^ 



Root hair with rod-shaped bacteria in 

 colonies and short chains 





■.-'i 



Terminal portion of root hair show- 

 intj bacteria in form of mantle 





Root hair undergoing attack by 

 bacteria and actinomycetes 



i ^ 



"4:^?: 



^' ■^^t^ '^'^ 



'■■•'£ii « 'w?< - ■•■■ % 



Masses of coccoid bacteria growing 

 < about a funijus filament 



■ vt , • ■ > 



Dense colonies of bacteria sur 

 rounding root hairs 



Figure 2. Relationships between microorganisms and root systems of higher plants. 

 From Starkey (848). 



