Effects of Dracontomelon duperreanum Leaf Litter on the Growth and Photosynthesis of Microcystis aeruginosa

  • Xiaoxiong Wang
  • Yim Tong Szeto
  • Chengchun Jiang
  • Xiaojun Wang
  • Yi Tao
  • Jianguo Tu
  • Jing Chen


This study investigated the use of Dracontomelon duperreanum leaf litter extract (DDLLE) in inhibiting the growth and photosynthesis of the algae Microcystis aeruginosa. The goal of the study was to evaluate a potential solution for cyanobacterial bloom prevention. M. aeruginosa was exposed to extract concentrations from 0.4 to 2.0 g L−1. Chlorophyll-a (Chl-a) content and photosynthesis levels were assessed using pulse amplitude modulated fluorimetry phytoplankton analyzer. Results suggested that the extract could efficiently suppress M. aeruginosa growth. The content of Chl-a was only 19.0 µg L−1 and achieved 96.0% inhibition rate when exposed to 2.0 g L−1 on day 15. Growth rate in response to different extract concentrations were consistent with changes in the photosynthesis efficiency (alpha), maximal relative electron transport rate and maximal photochemical efficiency of photosystem II (F v /F m ). Furthermore, several kinds of volatile chemicals and their concentrations in DDLLE had been identified by GC–MS, which of them play major role to suppress the growth of M. aeruginosa should be further studied.


Allelopathy Dracontomelon duperreanum Growth suppression Microcystis aeruginosa Phyto-PAM 



This work was supported by the National Natural Science Foundation (NSFC) of China, Grant No. 5137836 and the Science, Industry, Trade and Information Technology Commission of Shenzhen Municipality (JCYJ20150430163657307) for their financial support.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Xiaoxiong Wang
    • 1
    • 2
  • Yim Tong Szeto
    • 3
  • Chengchun Jiang
    • 2
  • Xiaojun Wang
    • 1
  • Yi Tao
    • 4
  • Jianguo Tu
    • 5
  • Jing Chen
    • 5
  1. 1.College of Environment and EnergySouth China University of TechnologyGuangzhouChina
  2. 2.School of Civil and Environmental EngineeringShenzhen PolytechnicShenzhenChina
  3. 3.Diagnostix Medical CentreCentral, Hong KongChina
  4. 4.Key Laboratory of Microorganism Application and Risk Control (MARC) of Shenzhen, Graduate School at ShenzhenTsinghua UniversityShenzhenChina
  5. 5.Shenzhen Center for Analysis and Measurement of Material SurfaceShenzhenChina

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