FORMATION OF SEROTONIN BY ISOLATED SEROTONIN-CONTAINING NEURONS AND BY ISOLATED NON-AMINE-CONTAINING NEURONS

Isolated giant serotonin-containing neurons of the cerebral ganglia of Helix pomatia were shown to produce serotonin when incubated with 5-hydroxytryptophan (5-HTP) whereas cells of the buccal ganglia, which are non-amine-containing cells did not. The rate of production was comparable to that for Ach in the isolated neurons of Aplysia. The significance of these results is discussed.     

薇甘菊的危害与田野菟丝子的防除作用

 通过对东莞、深圳、汕尾、香港等地的11个薇甘菊(Mikania micrantha)危害并有田野菟丝子( Cuscuta campestris )生长的野外样地的调查研究,结果表明：薇甘菊的危害极其严重,对各样地的覆盖度高达75%～95%,样地共有111种植物,其中属于重度危害（III级）和极重度危害（IV级）