1. However, T. nivea and Halothece sp. were affected by just SPF50, while the natural epiphytic community only by SPF90 (Fig. 3E-3F). Notably, the inhibition of APA may have elicited the uptake of P (Fig. 3B-3C), driving the inhibition of cell growth in some species or the induction of alternative acquisition routes to maintain it (Fig. 2D-2D);The decreases in P-uptake were associated with increases in APA at ~3fold control levels (Fig. 3D), most notoriously (p<0.05) in M. litorale and, surprisingly, in P. azotifigens, which both P-uptake and APA increased (Fig. 3D)
2. ROS can directly affect the growth of marine organisms by leading to oxidative stress and subsequent loss of membrane functions and proteins;N V Blough;ROS production Reactive oxygen species (ROS) are widespread compounds, originated from both biological (e.g. unbalanced metabolism or stress) and non-biological processes (e.g. photochemical reactions) (Blough and Zepp,1995
3. Oxidative stress in bacteria and protein damage by reactive oxygen species;E Cabiscol Catal�;International Microbiology,2000
4. The occurrence of chemically induced hormesis;E J Calabrese;Health Physics,1987