Abstract
Xylella fastidiosa, the causal agent of Citrus Variegated Chlorosis (CVC), and other bacterial pathogens like Agrobacterium tumefaciens, colonizes the vascular tissues of host plants, where the oxygen concentration is limited. Because these pathogens are strict aerobic organism, they cannot survive in the absence of oxygen. To avoid growth inhibition by hypoxia, these pathogens utilize th…