The effect of altitudinal gradient on soil microbial community activity and structure in moso bamboo plantations

Chang, Ed‐Haun; Chen, Tsai-Huei; Tian, Guangming; Chiu, Chih‐Yu

doi:10.1016/j.apsoil.2015.10.018

Cited by 52 publications

(44 citation statements)

References 40 publications

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“…This result suggested that the remediation process favored GN bacteria growth more than the GP bacteria. Gram-negative bacteria tend to grow well under substrate-rich conditions and adapt quickly to different environmental conditions (Chang et al 2016). GarciaSánchez et al (2015) found that the ratio of GP/GN was significantly increased in metal-contaminated soil, which indicated that GP/GN might be associated with metal stress.…”

Section: Effects Of S Alfredii Growth On Soil Microbial Community Stmentioning

confidence: 98%

Distance-dependent varieties of microbial community structure and metabolic functions in the rhizosphere of Sedum alfredii Hance during phytoextraction of a cadmium-contaminated soil

Yang

Zhang

Lin

et al. 2017

Environ Sci Pollut Res

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The recovery of microbial community and activities is crucial to the remediation of contaminated soils. Distance-dependent variations of microbial community composition and metabolic characteristics in the rhizospheric soil of hyperaccumulator during phytoextraction are poorly understood. A 12-month phytoextraction experiment with Sedum alfredii in a Cd-contaminated soil was conducted. A pre-stratified rhizobox was used for separating sub-layer rhizospheric (0-2, 2-4, 4-6, 6-8, 8-10 mm from the root mat)/bulk soils. Soil microbial structure and function were analyzed by phospholipid fatty acid (PLFA) and MicroResp™ methods. The concentrations of total and specified PLFA biomarkers and the utilization rates for the 14 substrates (organic carbon) in the 0-2-mm sub-layer rhizospheric soil were significantly increased, as well as decreased with the increase in the distance from the root mat. Microbial structure measured by the ratios of different groups of PLFAs such as fungal/bacterial, monounsaturated/saturated, ratios of Gram-positive to Gram-negative (GP/GN) bacterial, and cyclopropyl/monoenoic precursors and 19:0 cyclo/18:1ω7c were significantly changed in the 0-2-mm soil. The PLFA contents and substrate utilization rates were negatively correlated with pH and total, acid-soluble, and reducible fractions of Cd, while positively correlated with labile carbon. The dynamics of microbial community were likely due to root exudates and Cd uptake by S. alfredii. This study revealed the stimulations and gradient changes of rhizosphere microbial community through phytoextraction, as reduced Cd concentration, pH, and increased labile carbons are due to the microbial community responses.

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Section: Effects Of S Alfredii Growth On Soil Microbial Community Stmentioning

confidence: 98%

Distance-dependent varieties of microbial community structure and metabolic functions in the rhizosphere of Sedum alfredii Hance during phytoextraction of a cadmium-contaminated soil

Yang

Zhang

Lin

et al. 2017

Environ Sci Pollut Res

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“…PLFAs were identified and analyzed as described [16]. Fatty acid nomenclature was applied according to Frostegård et al [15].…”

Section: Biochemical Assaysmentioning

confidence: 99%

Soil Microbial Communities in Natural and Managed Cloud Montane Forests

Chang

Tian

Chiu

2017

Forests

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Forest management often results in changes in soil microbial communities. To understand how forest management can change microbial communities, we studied soil microbial abundance and community structure in a natural Chamaecyparis (NCP) forest, a disturbed Chamaecyparis (DCP) forest, a secondary (regenerated) Chamaecyparis (SCP) forest and a secondary (reforested) Cryptomeria (SCD) forest. We analyzed soil microbial abundance by measuring phospholipid fatty acids (PLFAs) and microbial community structure by denaturing gradient gel electrophoresis (DGGE) in the studied forest soils. The content of the soil PLFA fungal biomarker decreased from NCP to SCP, DCP and SCD forest soils, associated with the degree of disturbance of forest management. The ratio of soil Gram positive-to-negative bacteria and the stress index (16:1ω7t to 16:1ω7c) increased from NCP to SCP and DCP soils; thus, disturbed forests except for SCD showed increased soil microbial stress. Principal component analysis of soil microbial groups by PLFAs separated the four forest soils into three clusters: NCP, DCP and SCP, and SCD soil. The DGGE analysis showed no difference in the microbial community structure for NCP, DCP and SCP soils, but the community structure differed between SCD and the three other forest soils. In cloud montane forests, disturbance due to forest management had only a slight influence on the soil microbial community, whereas reforestation with different species largely changed the soil microbial community structure.

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“…Variation in altitude is very common in forest ecosystems in the Southeast Asia due to the wide spread of mountains and this change can influence the microclimate, such as the temperature and moisture (Chang et al, 2016). Due to change in microclimatic condition, soil physical, chemical, biological properties especially soil microbial biomass are changed consequently.…”

Section: Discussionmentioning

confidence: 99%

Effect of altitudinal variation on the soil characteristics in sal (Shorea robusta gaertn.) forests of eastern Nepal

Bhattarai

Mandal

2017

Our Nature

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Physico-chemical properties of forest soil depends on a variety of natural factors, the most important are variation in altitude, vegetation cover and microbial activities. The present study was conducted to understand the effect of variation in altitude in the soil characteristics in Tarai Sal forest (TSF) and Hill Sal forest (HSF), of eastern Nepal. Soil samples were collected from thirty plots randomly in each forest from 0-15cm and 15-30cm depths in May 2012. Both forests had sandy loam type of soil texture. However, the percentage composition of soil particles varies within the forest sites. Soil moisture was higher in TSF. It was maximum in the rainy season in both forests. Water holding capacity was slightly higher in TSF. Bulk density was higher in TSF and it increased with soil depth in both forests. The pH value was slightly higher in HSF than TSF however, the value increased in lower soil depth in both forest stands. In the upper soil layer (0-15cm) soil organic carbon (SOC) was higher in HSF (2.09%) than TSF (1.6%). Similarly, total nitrogen (TN) was also higher in HSF (0.173%) than in TSF (0.129%) while total phosphorus (TP) was more or less same in both forest stands. The potassium (K) a soil extractable nutrient also showed higher value in HSF (312.13 µg g . The values of SOC, TN, TP and K decreased in lower depth (15-30cm) in both forest stands. In conclusion, variation in altitude causes difference in the microclimatic condition which resulted into the alternation in soil characteristics. AbstractPhysico-chemical properties of forest soil depends on a variety of natural factors, the most important are variation in altitude, vegetation cover and microbial activities. The present study was conducted to understand the effect of variation in altitude in

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The effect of altitudinal gradient on soil microbial community activity and structure in moso bamboo plantations

Cited by 52 publications

References 40 publications

Distance-dependent varieties of microbial community structure and metabolic functions in the rhizosphere of Sedum alfredii Hance during phytoextraction of a cadmium-contaminated soil

Distance-dependent varieties of microbial community structure and metabolic functions in the rhizosphere of Sedum alfredii Hance during phytoextraction of a cadmium-contaminated soil

Soil Microbial Communities in Natural and Managed Cloud Montane Forests

Effect of altitudinal variation on the soil characteristics in sal (Shorea robusta gaertn.) forests of eastern Nepal

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