The effect of the photosynthetic inhibitor herbicide Cyanazine on VA mycorrhiza and on pea plant growth was examined. Plant growth was decreased by Cyanazine applied at the rate of 0.05 and 0.1 mg ml -~ . Cyanazine only decreased VA mycorrhiza of pea roots when applied at high doses (0.1 mg ml-l). However, no direct effect of the herbicide on VA endophyte development was found. These results suggest that the inhibitory effect of Cyanazine on VA mycorrhiza took place via influence on plant metabolism and growth.VA mycorrhizas alleviated the deleterious effect of the herbicide on plant growth when applied at moderate (0.05 mg ml ~ ) but not at high (0.1 mg ml-i) doses.
We report a 12-year-old boy who presented with abdominal pain and who was found to have an aneurysm of the abdominal aorta (AAA). The patient was born from a quadruplet pregnancy induced by in vitro fertilization. Postnatal transient respiratory distress required assisted ventilation that had been monitored by two consecutive umbilical arterial catheters (UAC). AAA is a rare condition in childhood. Infection and/or trauma are known to be the most frequent causes. Most of the reported cases have occurred in children in whom a UAC had been placed during the neonatal period. In this patient the delay between UAC placement and diagnosis was considerable. At the time of this report the patient had remained well during a follow-up of 8 years after treatment.
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