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Benhang Li Yijun Yin Xiaohong Zhou Li Feng Yongze Liu Ziwen Du Yajun Tian Liqiu Zhang 《环境科学学报(英文版)》2023,35(2):205-214
Allelochemicals sustained-release microspheres (ACs-SMs) exhibited great inhibition effect on algae,however,few studies have focused on ACs-SMs toxicity on invertebrate.In this study,the effects of single high-concentration ACs (15 mg/L,SH-ACs),repeated low-concentration ACs (3×5 mg/L,RL-ACs) and ACs-SMs containing 15 mg/L ACs exposure on the ingestion,incorporation,and digestion of Daphnia magna Straus (DS) were investigated by stable isotope15N labeling method.Meanwhile,the diversit... 相似文献
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The goals of this work were to isolate and identify an anti-algal compound from extracts of Artemisia annua and study its mode of action on Microcystis aeruginosa. The anti-algal compound was isolated from the extracts using column chromatography and activity-guided fractionation methods. Artemisinin with strong anti-algal activity was identified by gas chromatography-mass spectrometry and 1H Nuclear Magnetic Resonance. The EC50 of artemisinin on M. aeruginosa was 3.2 mg L−1. Artemisinin decreased the soluble protein content and increased the superoxide dismutase activity and ascorbic acid content of M. aeruginosa, but exerted no effect on soluble sugar content. The results suggested the mode of action of artemisinin on algae may primarily be the increasing level of reactive oxygen species in algae cells. The results of our research could aid in the development of new anti-algal substances and lead to further study of mechanisms of inhibitory effect on algae. 相似文献
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Allelopathic potential of Cistus ladanifer chemicals in response to variations of light and temperature 总被引:2,自引:0,他引:2
Natividad Chaves Lobón Juan Carlos Alias Gallego Teresa Sosa Diaz José Carlos Escudero Garcia 《Chemoecology》2002,12(3):139-145
Summary. Earlier studies have demonstrated the allelopathic potential of the exudate of Cistus ladanifer leaves, and have identified the compounds responsible for the effect. It is here shown that the effect of each of these compounds
and their interactions on germination and seedling development varies depending on the light and temperature parameters to
which they are subjected. The allelochemicals show a fairly heterogeneous response when studied separately, there being no
general pattern to the behaviour. When they act conjointly, however, their activity is enhanced by high temperatures, and
the greatest phytotoxicity in inhibiting both germination and seedling development is attained with high temperatures and
long photoperiods. These results suggest that the environmental factors temperature and photoperiod may alter the allelopathic
effect of Cistus ladanifer.
Received 5 December 2001; accepted 11 March 2002. 相似文献
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