摘要
Magnolia denudata(M. denudata) leaf litter extract(MDLLE) was tested on the response of Microcystis aeruginosa(M. aeruginosa). The inhibition of M. aeruginosa increased from 7.6% to 49.8% at 0.4 g·L^(-1) dosage while it increased from 15.7% to 77.4 % at 2.0 g·L^(-1) dosage during 15 days of incubation. The parameter variation of relative electron transport rate(rETR), maximal quantum yield(Fv/Fm ), and electron transport rates(rERTmax) indicated that photosynthesis was an important target impaired by MDLLE, including the photosynthetic center photosystem II(PSII) of M. aeruginosa which demonstrated from the rapid light curves(RLCs). The results of Chlorophyll-a(Chl-a) fluorescence, RLCs, and fluorescein diacetate(FDA) staining assays were consistent with those of growth inhibition tests. The results demonstrated that the application of MDLLE offered great potential on cyanobacterial blooms control especially at the initial stage of development. Furthermore, several kinds of volatile chemicals had been isolated in MDLLE, and the role on suppression of growth for M. aeruginosa should be further studied separately.
作者
FAN Zhongxiu
HUANG Kaiwen
WANG Xiaoxiong
XIAO Yankun
GAO Jingsi
JIANG Chengchun
SZETO Yim Tong
范中秀;黄凯文;汪小雄;肖炎坤;高静思;姜成春;司徒炎棠(School of Materials and Environmental Engineering,Shenzhen Polytechnic,Shenzhen 518055,China;School of Civil Engineering,Guangzhou University,Guangzhou 510006,China;Department of Chemistry,Hong Kong Baptist University,Kowloon Tong,HKSAR 999077,China)
基金
National Natural Science Foundation of China(No.51378316)
Science and Technology Project of Shenzhen Polytechnic,China(No.6020320001K0)
Urban Smart Water Pollution Prevention and Control Technology Development Center by the Department of Education of Guangdong Province,China(No.2019GGCZX007)。
