Variations in rhizosphere microbial communities of rubber plantations in Hainan Island China

Guo H. C., . and Wang W. B., . and Luo X. H., . and Wu X. P., . Variations in rhizosphere microbial communities of rubber plantations in Hainan Island China. pp. 245-256. ISSN 1511-1768

The aim of this study was to describe rhizosphere soil microbial community characteristics of rubber plantations varying in soil parent material and years of plantation in Hainan Island southern China. Soils were taken from rhizosphere of grass field immature rubber plantation (before tapping) and mature rubber plantation (after tapping) at each of three soil type areas in Hainan Island. Microbial biomass was estimated from the total extractable phospholipid fatty acids (PLFAs) and PLFA profiles were analysed to determine the microbial community structure. Total microbial biomass of soils with shallow marine deposit significantly increased with increasing years of rubber cultivation and declined significantly with increasing years of rubber cultivation of soils with basalt. The ratio of fungi to bacteria (F/B) was significantly higher in rubber plantations than in grass field on soils with the same parent material. Soil organic carbon (C) total nitrogen (N) and total phosphorus (P) were significantly positively correlated with total microbial biomass bacteria biomass fungi biomass and actinomycete biomass. The primary difference in the microbial community structure of the 11 soils was between soils with basalt versus soils with granite and shallow marine deposit. Soil total N total organic C and total P may be important factors influencing the structure of the soil microbial community in this study.

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Abstract

The aim of this study was to describe rhizosphere soil microbial community characteristics of rubber plantations varying in soil parent material and years of plantation in Hainan Island southern China. Soils were taken from rhizosphere of grass field immature rubber plantation (before tapping) and mature rubber plantation (after tapping) at each of three soil type areas in Hainan Island. Microbial biomass was estimated from the total extractable phospholipid fatty acids (PLFAs) and PLFA profiles were analysed to determine the microbial community structure. Total microbial biomass of soils with shallow marine deposit significantly increased with increasing years of rubber cultivation and declined significantly with increasing years of rubber cultivation of soils with basalt. The ratio of fungi to bacteria (F/B) was significantly higher in rubber plantations than in grass field on soils with the same parent material. Soil organic carbon (C) total nitrogen (N) and total phosphorus (P) were significantly positively correlated with total microbial biomass bacteria biomass fungi biomass and actinomycete biomass. The primary difference in the microbial community structure of the 11 soils was between soils with basalt versus soils with granite and shallow marine deposit. Soil total N total organic C and total P may be important factors influencing the structure of the soil microbial community in this study.

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Item Type:	Article
AGROVOC Term:	Rhizosphere
AGROVOC Term:	Microbial ecology
AGROVOC Term:	Plantations
AGROVOC Term:	Biomass
AGROVOC Term:	Actinomycetes
AGROVOC Term:	Phospholipids
AGROVOC Term:	Fatty acids
AGROVOC Term:	Ecosystems
AGROVOC Term:	Soil cultivation
AGROVOC Term:	Spatial distribution
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:28
URI:	http://webagris.upm.edu.my/id/eprint/22985

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