Menu Node Edit | drupal.org

The Menu Node Edit module allows the site's menu system to be used as the sole organizing principle. It does so by allowing specific menu items to be defined as 'sections' of a Drupal web site. Individual users can then be assigned as editors of one or more sections.

Section editors are then granted access to edit all nodes that fall within a specified menu hierarchy.

This structure means that, for small web sites, the menu system can be used as the sole ordering principle, removing the need for taxonomy or group-based editing controls.