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THE CONSTITUTION AND CONTENT OF MICRO MOLECULE POLYPHENOLS IN THE ROOTS OF FIVE MANGROVE PLANTS IN SITU
Author(s): 
Pages: 1046-1051
Year: Issue:  5
Journal: Oceanologia et Limnologia Sinica

Keyword:  mangrove plantsin siturootmicro-molecule polyphenol monomercontent;
Abstract: The allelopathy of mangrove plant and its ecological function is closely related to the constitution and content of polyphenols substances. Micro-molecule polyphenols in mangrove roots are important in regulation on the rhizosphere communities. However, the scientific experimental evidence to polyphenol monomers in the root remains scarce. Root samples of five important constructive mangrove plants were collected in situ during low tide in Zhanjiang Mangrove National Nature Reserve, Guangdong, China. Five micro-molecule polyphenol monomers were analyzed by liquid phase high performance chromatography(HPLC) qualitatively and quantitatively. All the five monomers were detected in five species of mangrove plant roots in concentration range from 0.0007—1.7424 mg/g DW. The highest content of monomer in single plant was catechin(C) 1.7424 mg/g DW, followed by in turn, gallocatechin(GC) 1.1470 mg/g DW, epigallocatechin(EGC) 0.4457 mg/g DW, gallic acid(GA) 0.2374 mg/g DW, and epicatechin(EC) 0.3331 mg/g DW, respectively. In total average of the five monomers, Kandelia candel and Aegiceras corniculatum ranked top for 0.2778 mg/g DW and 0.2379 mg/g DW; Bruguiera gymnorrhiza and Sonneratia petala were the next for 0.0766 g DW and 0.0734 mg/g DW; and Rhizophora stylosa and A. corniculatum(low tide), the lowest, 0.0488 g DW and 0.0341 mg/g DW, respectively.
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