Screening Of Selected Terrestrial Plants For The Control Of Cyanobacterial Growth
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Date
2017-08
Authors
T. Mohd. Yusof, Tengku Nadiah
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Efficient cyanobacterial bloom management is important because a bloom in
a water body may cause problems such as unpleasant odour and taste, and most
importantly, toxins production that are potentially fatal to human and animals.
Previous researches have shown that various plants were able to inhibit the
cyanobacterial growth. Therefore, if any wild terrestrial leaf can perform the same
control, it would provide a low cost and environmental friendly alternative of
cyanobacterial management. Previous researches also showed that the ability of
barley straw to control cyanobacteria might likely involved complex microbial
degradation. Therefore, experiments were set up to test the effect of 10 gL-1 fungidegraded
palm oil trunk and sugarcane bagasse on cyanobacterial growth for 25 – 30
days by measuring chlorophyll a content. Increased ability of fungi-degraded palm
oil trunks in inhibiting cyanobacterial growth was observed, strengthening the theory
of involvement of microbial degradation in controlling of cyanobacterial growth.
However, no difference was observed in sugarcane study, but it was observed that
sugarcane also worked as adsorption treatment. While second part of this project is to
test 15 individual wild terrestrial plants leaves leachates individually for their
abilities to inhibit the growth of eight isolated cyanobacterial strains. The study was
conducted by introducing 1 – 10 gL-1 of dried leaf into cyanobacterial culture for 15
– 30 days. Based on chlorophyll a content, most leaves effectively controlled all
cyanobacterial growth at different efficiency, depending on the species of the
cyanobacteria and leaves used. The results suggested that the leaves released
effective anti-cyanobacterial substances, which can perform as natural biological
controls of cyanobacterial bloom.
Description
Keywords
Screening of selected terrestrial plants , control of Cyanobacterial growth