As plant species spread from their nutrient-rich tropical origins, however, the root tips of plants such as the desert shrub species Tamarix ramosissima (left of largest cross section) evolved to ...

Plant root cross-section showing iron deficiency signal IMA1 expression (yellow) during iron deficiency (left) and iron deficiency plus simulated bacterial presence (right).

Plant root cross-section showing iron deficiency signal IMA1 expression (yellow) during iron deficiency (left) and iron deficiency plus simulated bacterial presence (right). LA JOLLA (January 10 ...

A wide range of physiological disorders has been reported within the first few hours of exposing intact plant roots to moderate levels of Al3+. Past microanalytic studies, largely limited to electron ...