False-colour scanning electron micrograph (SEM) of nitrogen-fixing bacteria,Rhizobium leguminosarum (orange cylinders),on the root hair of a pea plant,Pisum sativum. Rhizobium is a free-living soil bacterium for most of its life,but at times forms a symbiotic association with the roots of leguminous plants. In return for breaking down atmospheric nitrogen & converting it into a form the plant can use,the bacterium gains access to the plant's carbohydrate food stores & is kept safe in the plant's tissue. Magnification: x5'600 at 35mm,x11'200 at 6x7cm size. (More detailed information available on request). Reference: MICROCOSMOS,page 98 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Burgess, Dr. Jeremy |
Taille de l’image : | 3588 px × 2480 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |