Maintenance of periodontal health or transition to a periodontal lesion reflects the
continuous and ongoing battle between the vast microbial ecology in the oral cavity and the …

The appearance of oxygen on earth led to two major problems: the production of potentially
deleterious reactive oxygen species and a drastic decrease in iron availability. In addition …

Regulation of iron uptake is critical for plant survival. Although the activities responsible for
reduction and transport of iron at the plant root surface have been described, the genes …

Dissimilatory iron-reducing bacteria (DIRB) couple the oxidation of organic matter or H2 to
the reduction of iron oxides. The factors controlling the rate and extent of these reduction …

Numerous bacteria secrete low molecular weight compounds termed siderophores that
have a high affinity for iron ions. Siderophores have a well-documented role as iron …

ABSTRACT A previously undescribed plant-microbe interaction between a root-colonizing
Streptomyces species, S. lydicus WYEC108, and the legume Pisum sativum is described …

Despite the phytotoxicity of olive-mill solid waste (OMSW) due to its high polyphenols
content, OMSW have fertilizer characteristics, which make it a potential source for organic …

Background The production of peroxide and superoxide is an inevitable consequence of
aerobic metabolism, and while these particular'reactive oxygen species'(ROSs) can exhibit a …

Plant growth-promoting rhizobacteria (PGPR) are a group of free-living bacteria that
colonize the rhizosphere and benefit the root growth. Bacteria of diverse genera were …

Cellular DNA damage under prooxidant conditions has been shown to be mediated by iron.
In fact, iron is an important element in the establishment of a prooxidant status in the cell. It is …