Interaction of arbuscular mycorrhizal fungus (Glomus intraradices and Glomus etunicatum) with tomato plants grown under copper toxicity

In this research, the effect of two arbuscular mycorrhizal fungal (AMF) inoculation (Glomus intraradices and Glomus etunicatum) on tomato plants growing in nutrient solution with high concentrations of copper were studied. Copper (Cu) is an essential micronutrient for plant growth. In the present study, the effect of copper toxicity on growth, chlorophyll, sugar, protein content and antioxidant enzymes activity in both mycorrhizal and non-mycorrhizal tomato plants were studied. The experiment was performed by using two treatments (mycorrhizal and non-mycorrhizal) and five concentrations of CuSO4 solution (0, 1.5, 3.5, 5.5, 7.5 Mm CuSO4) added to Hogland nutrient solution (with half P concentration). Copper toxicity caused reduction in growth in all treatments (non-AM). This may be due to the accumulation of Cu in leaves. Fresh and dry weights of shoot and roots, total sugar content in both shoots and roots, the total chlorophyll content in leaves, protein content in shoots and roots, antioxidant enzyme activity and root colonization were determined.Keywords: Arbuscular mycorrhiza, tomato plants, copper toxicity, Glomus intraradices, Glomus etunicatum, oxidative stres

Video Capsule Retention in a Zenker Diverticulum

We report the case of a video capsule endoscope lodged within a Zenker diverticulum. The system that was equipped with a real-time viewer showed an unchanging image unlike esophageal or gastric mucosa, suggesting that the capsule was elsewhere. The presence of cervical discomfort suggested video capsule retention in a Zenker diverticulum. The capsule was removed endoscopically and reinserted using a hood-assisted endoscope and the procedure was completed

Communications Biophysics

Contains research objectives and summary of research on nine research projects split into four sections.National Institutes of Health (Grant 5 ROI NS11000-03)National Institutes of Health (Grant 1 P01 NS13126-01)National Institutes of Health (Grant 1 RO1 NS11153-01)National Institutes of Health (Grant 2 R01 NS10916-02)Harvard-M.I.T. Rehabilitation Engineering CenterU. S. Department of Health, Education, and Welfare (Grant 23-P-55854)National Institutes of Health (Grant 1 ROl NS11680-01)National Institutes of Health (Grant 5 ROI NS11080-03)M.I.T. Health Sciences Fund (Grant 76-07)National Institutes of Health (Grant 5 T32 GM07301-02)National Institutes of Health (Grant 5 TO1 GM01555-10