Changes in soil microbial community composition in response to fertilization of paddy soils in subtropical China

Dong, Wenyi; Zhang, Xinyu; Dai, Xiaoqin; Fu, Xiaoli; Yang, Fengting; Liu, Xiyu; Sun, Xiaomin; Wen, Xuefa; Schaeffer, Sean M.

doi:10.1016/j.apsoil.2014.06.007

Cited by 191 publications

(105 citation statements)

References 57 publications

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“…Redundancy analysis showed that changes in the composition of the soil microbial communities and soil environmental factors were important for maintaining soil enzyme activities. Our previous studies clearly demonstrated that swine manure could result in significantly increased contents of SOC and TN (Dong et al, 2012), and PLFAs, with increases in G + and actinomycetes (Dong et al, 2014), than the other treatments. This may help explain the enhanced effects of the swine manure on the hydrolytic enzyme activities and suggests that swine manure may promote secretion of hydrolytic enzyme activities by G + and actinomycetes.…”

Section: Effects Of Fertilizer Practices On Soil Absolute Enzyme Actimentioning

confidence: 75%

“…The results of our previous study, in which substantial increases were observed in SOC, Gram-positive bacteria, and actinomycetes in red soils, highlighted the influence of swine manure or N, P, and K fertilizers on SOC contents and soil phospholipid fatty acid (PLFA) biomarkers in paddy soils (Dong et al, 2012(Dong et al, , 2014. However, there is a lack of information about the influence of fertilization practices on soil enzyme activities and their linkages with the structure of the soil microbial community in this region.…”

Section: Introductionmentioning

confidence: 87%

“…The positive responses of SOC, TN, and TP contents, soil microbial biomass, and absolute and specific enzyme activities to swine manure applications demonstrate that farmers should be instructed to reuse organic fertilizer on the reddish paddy soils (Dong et al, 2012(Dong et al, , 2014. Because of the inhibitory effects of N 2 P 2 K 2 and N 3 P 3 K 3 on AP absolute and specific activities and the potential risk of soil TP pollution, mineral fertilizer applications should be maintained below 338 (N)-44 (P)-140 (K) kg ha −1 year −1 .…”

Section: Suggestions For Fertilization Of the Reddish Paddy Soilsmentioning

confidence: 99%

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Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Zhang

Dong

Dai

et al. 2015

Science of The Total Environment

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144

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• Acid phosphatase activity was negatively correlated with soil pH and P content.• βG, NAG, and LAP activities were positively correlated with SOC and Total N contents.• The four enzyme activities were significantly higher under manure than NPK fertilizer.• Enzyme activities were positively correlated with actinomycete and G + bacterium.• We recommend reducing P fertilizer application rates to subtropical paddy soils. G R A P H I C A L A B S T R A C Ta b s t r a c t a r t i c l e i n f o Long-term phosphorus (P) and nitrogen (N) applications may seriously affect soil microbial activity. A long-term field fertilizer application trial was established on reddish paddy soils in the subtropical region of southern China in 1998. We assessed the effects of swine manure and seven different rates or ratios of NPK fertilizer treatments on (1) the absolute and specific enzyme activities per unit of soil organic carbon (SOC) or microbial biomass carbon (MBC) involved in C, N, and P transformations and (2) their relationships with soil environmental factors and soil microbial community structures. The results showed that manure applications led to increases in the absolute and specific activities of soil β-1,4-glucosidase(βG), β-1,4-N-acetylglucosaminidase (NAG), and leucine aminopeptidase (LAP). The absolute and specific acid phosphatase (AP) activities decreased as mineral P fertilizer application rates and ratios increased. Redundancy analysis (RDA) showed that there were negative correlations between absolute and specific AP activities, pH, and total P contents, while there were positive correlations between soil absolute and specific βG, NAG, and LAP enzyme activities, and SOC and total N contents. RDA showed that the contents of actinomycete and Gram-positive bacterium PLFA biomarkers are more closely related to the absolute and specific enzyme activities than the other PLFA biomarkers (P b 0.01). Our results suggest that both the absolute and specific enzyme activities could be used as sensitive soil quality indicators that provide useful linkages with the microbial community structures and environmental factors. To maintain microbial activity and to minimize environmental impacts, P should be applied as a combination of inorganic and organic forms, and total P fertilizer application rates to subtropical paddy soils should not exceed 44 kg P ha −1 year −1 .

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Section: Effects Of Fertilizer Practices On Soil Absolute Enzyme Actimentioning

confidence: 75%

Section: Introductionmentioning

confidence: 87%

Section: Suggestions For Fertilization Of the Reddish Paddy Soilsmentioning

confidence: 99%

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Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Zhang

Dong

Dai

et al. 2015

Science of The Total Environment

Self Cite

144

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“…The microbial community was assessed by analyzing sediment for characteristic phospholipid fatty acids (PLFAs) [15][16][17]. The effects of ROL on sediment and rhizosphere oxygen and redox levels were revealed using microelectrodes, while ROL from whole root systems was determined using titanium citrate [18].…”

Section: Introductionmentioning

confidence: 99%

Root Radial Oxygen Loss and the Effects on Rhizosphere Microarea of Two Submerged Plants

Tian¹,

Wang²,

Tian³

et al. 2015

Pol. J. Environ. Stud.

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Radial oxygen loss (ROL) has been suggested to be a major process to protect plants exposed to the anaerobic by-products of soil anaerobiosis. The aim of the present study was to test the effects of root ROL from two submerged plants (Hydrilla verticillata and Vallisneria spiralis) on the rhizosphere oxygen profile and rhizosphere microarea. Phospholipid fatty acids (PLFAs) of sediment samples were used to characterize and quantify the microbial community. The results showed clearly that there were significant differences between the two plants in radial oxygen loss, which affected rhizosphere physicochemical parameters and the microbial community. Rhizosphere total biomass, bacteria, gram-positive bacteria, actinomycetes, and microbial diversity of V. spiralis were significantly higher than those of H. verticillata. The present study highlights root ROL as a key parameter affecting the microbial community of the rhizosphere microarea.

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“…Different letters indicate significant differences within a functional group (P b 0.05). the explanatory variables (Dong et al, 2014). For example, Dong et al (2014) showed that TN, SOC and TP were the major factors explaining the variations in PLFAs under different fertilizer applications, but both TN and SOC, and TP and TN were significantly positively correlated.…”

Section: Discussionmentioning

confidence: 99%

Changes of anaerobic to aerobic conditions but not of crop type induced bulk soil microbial community variation in the initial conversion of paddy soils to drained soils

Dai

Yuan

Wang

2016

CATENA

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a b s t r a c t a r t i c l e i n f oSoil microorganisms are the main drivers of all of the biochemical processes that occur in soils. Land-use conversion, a common occurrence driven by market economy, changes plant species and the associated management strategies, thus significantly influences soil microbial communities. However, few studies have been conducted to disentangle the effect of the alteration of plant species from that of soil environment during the initial years of conversion. In this study, the effect of land-use conversion from double rice cropping (RR) to maize-maize (MM) and soybean-peanut (SP) double cropping systems on soil physical and chemical properties and microbial communities was studied two years after the conversion in southern China. The results showed that land use conversion significantly changed the soil properties, microbial communities and microbial biomass. The soil water content decreased significantly by 26.3%, and the pH decreased by 0.50 and 0.52 for MM and SP, respectively, compared with RR. Soil inorganic N also decreased significantly by 55% after the conversion to drained fields. The total phospholipid fatty acids (PLFAs), and bacterial, G+, G− and actinomycetic PLFAs decreased significantly after the conversion. No significant differences were found in the soil properties, microbial communities and microbial biomass between the converted MM and SP. Our results indicated that the changes of anaerobic to aerobic conditions, rather than of crop type, induced the variations in the soil properties and microbial communities during the initial years after conversion from paddy soils to drained soils. In particular, soil pH was the key factor that regulated the variations in the soil microbial communities after conversion.

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Changes in soil microbial community composition in response to fertilization of paddy soils in subtropical China

Cited by 191 publications

References 57 publications

Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Root Radial Oxygen Loss and the Effects on Rhizosphere Microarea of Two Submerged Plants

Changes of anaerobic to aerobic conditions but not of crop type induced bulk soil microbial community variation in the initial conversion of paddy soils to drained soils

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