Characterisation of allelochemical compounds signature in two mangrove forest species of Rhizophora apiculata and Acrostichum aureum and potential in suppressing weed growth

Othman, Rashidi and Ramya, Razanah and Mohd Hassan, Norazian and Wan Daud, Wan Masyitah and Johari, Nursyafica Nadia (2019) Characterisation of allelochemical compounds signature in two mangrove forest species of Rhizophora apiculata and Acrostichum aureum and potential in suppressing weed growth. In: International Conference on Ecology and Biodiversity Across Time and Space 2018 (ICEBATS 2018), 15 -16 Aug 2018, School of Biological Sciences, Universiti Sains Malaysia.

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Abstract

Rhizophora apiculata and Acrostichum aureum are a common mangrove species in Malaysia. Allelochemical interaction of the mangrove species was speculated to play an important role in dominance in the harsh mangrove environment. This study assessed the quantitative and qualitative determination for total phenolic content and individual phenolic compounds as allelochemical content for R. apiculata and A. aureum leaves as a potential allelopathic substance. The second objective is to investigate the allelopathic effect towards weed germination and growth through in vitro model system. Two types of maceration extraction comprising water extraction and sequential alkaline extract were used for allelochemical screening analysis. Both extractions were separated by ethyl acetate. Acrostichum aureum had the highest total phenolic content (1129.52 μg GAE/g DW) in comparison with R. apiculata. Meanwhile, the quantitative analysis by HPLC, revealed that different extraction detected different individual phenolic acid, Caffeic acid detected in both mangrove species in sequential alkaline extraction by A. aureum. The allelopathic effect of Chloris barbata for A. aureum extract indicated that during pre-emergent development, the suppression of weed growth was higher compared to post-emergent. Therefore, A. aureum may work as an allelochemical producer and can contribute to the establishment of pure colonies of A. aureum in the mangrove ecosystem

Item Type:	Conference or Workshop Item (Other)
Additional Information:	3842/77544
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > QD Chemistry S Agriculture > S Agriculture (General) S Agriculture > SB Plant culture S Agriculture > SD Forestry T Technology > TP Chemical technology > TP248.13 Biotechnology
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Architecture and Environmental Design > Department of Landscape Architecture
Depositing User:	Dr rashidi othman
Date Deposited:	08 Jan 2020 12:07
Last Modified:	15 Jul 2020 14:39
URI:	http://irep.iium.edu.my/id/eprint/77544

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