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Association of Polychaetes toward Early Oxidative Stress Responses of
Mangrove Plants
Nurul Shahirah bt Mohd Azam
Supervisor: Dr. Norhayati bt Yusuf
Bachelor of Science (Biological Sciences)
School Of Fundamental Science
Around the world, there were less study on mangroves toward the biotic stress. Hence,
this study was done to close the gap and was important to understand about
mangrove defence mechanism and biotic effect on mangroves different parts &
species. The objective was to compare the early oxidative stress responses on leaves
and roots of three mangroves species associate with polychaetes. Pantai Morib Baru,
Selangor was the sampling site. Results showed there were no significant difference
between those biomarkers, (p > 0.05). However, for leaf part H2O2 concentration and
MDA content was very high in Avicennia sp. (197.59 ± 2.67) µM/g FW and (5.57 ±
1.31) nmole/g FWT respectively. In contrast, Rhizophora sp. (52.22 ± 4.25)% rank
the highest for root part in ion leakage percentage. This suggest that, biomarkers
content were unrelated and depend on each parts and species defence mechanism.
More studies should be conducted next to evaluate the effect of biotic stress upon
mangroves.
332 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018