Phosphorus mobilization in the Yeyahu Wetland: Phosphatase enzyme activities and organic phosphorus fractions in the rhizosphere soils

Zhu, Jing; Qü, Bo; Li, Min

doi:10.1016/j.ibiod.2017.05.010

Cited by 54 publications

(23 citation statements)

References 38 publications

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“…Straw application led to a marked increase in P availability in the top 20 cm of the soil layer, partially due to straw P released into the soil. Our results also showed that straw return significantly increased phosphatase in soil (Figure 4d), which can strengthen the hydrolysis of esters and anhydride of phosphoric acid to release phosphate that plants can directly use [54,55]. In the experiment, straw application appeared to effectively increase the exchangeable K in soil, which was consistent with the findings reported by Sui et al [56].…”

Section: Soil Doc Mbc N Min Available P Exchangeable K and Enzymsupporting

confidence: 91%

“…Straw return thus impacts crop yield dependent on soil characteristics, application method, the rate of straw return, and time period. Many previous researchers have reported beneficial outcomes to crop yields from applying crop straw, primarily due to improving the soil physical structure, nutrient content, and microbial activities [54,64].…”

Section: Crop C Accumulation N Uptake Yield and Amount Of Straw Returnmentioning

confidence: 99%

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Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Han

Zhou

et al. 2020

Agronomy

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Exploring suitable maize straw-return measures is essential for the new double-cropping system of maize (Zea mays L.)–rice (Oryza sativa L.) rotation in the middle reaches of Yangtze River in China, which can increase crop yield by improving soil quality. In this study, four straw-return measures were evaluated by investigating the soil bulk density (BD), organic matter (OM), microbial community, and nutrients from 2016 to 2018. The four straw-return treatments were as follows: (1) no straw-return (CK), (2) only rice straw incorporated into the field (M0Ri), (3) both maize and rice straw incorporated to field (MiRi), and (4) maize straw mulched and rice straw incorporated into the field (MmRi). Compared to CK, two-season crop straw-return treatments changed soil microbial community composition, and increased soil total organic carbon (TOC) and dissolved organic carbon (DOC), microbial biomass carbon (MBC), mineralized nitrogen (Nmin), available phosphorus (P) and exchangeable potassium (K) in the 0–20 cm soil layer by 3.6%, 63.4%, 38.8%, 12.4%, 39.7%, and 21.6%, respectively, averaged across MmRi and MiRi treatments. In addition, MmRi and MiRi increased annual yield by 9.1% and 15.2% in 2017 and 11.7% and 12.9% compared to CK in 2018, respectively. MmRi exhibited superiority in the soil microbial community, enzyme activities, DOC, MBC, Nmin, available P, and exchangeable K in contrast to MiRi. We concluded that MmRi is the best measure to implement for straw-return in maize–rice rotation systems.

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Section: Soil Doc Mbc N Min Available P Exchangeable K and Enzymsupporting

confidence: 91%

Section: Crop C Accumulation N Uptake Yield and Amount Of Straw Returnmentioning

confidence: 99%

Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Han

Zhou

et al. 2020

Agronomy

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“…The increase of OP in autumn may reflect plant senescence and enhanced litter (and associated nutrient) inputs (Cao, 2012;White et al, 2012;Kopáček et al, 2017). Increased acid phosphatase activity and litter fall can accelerate the release of OP into the soil solution and improve P availability (Zhu et al, 2017). The fact that maximum HR-OP concentrations occurred in October under all three plants could be connected to litter and plant residue inputs during senescence, which starts in late September in this system.…”

Section: Seasonal Variations In Phosphorus Fractions In Different Rhimentioning

confidence: 89%

Microbial community composition and activity controls phosphorus transformation in rhizosphere soils of the Yeyahu Wetland in Beijing, China

Teng

Zhu

et al. 2018

Science of The Total Environment

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Microorganisms in the rhizosphere of wetland plants can have a significant impact on phosphorus (P) interception. We investigated the seasonal pattern of microbial community structure and its relationship with different P forms in the rhizosphere of three plants Scirpus planiculmis, Zizania latifolia, and Phragmites australis from the Yeyahu Wetland, China. Chloroform fumigation-extraction was used to determine the soil microbial biomass P (SMBP) and phospholipid fatty acids (PLFA) were used to characterize microbial community composition. P fractions in rhizosphere soil samples were also observed using sequential chemical fractionation. Results showed that the average total PLFA (TPLFA) contents of rhizosphere soils ranged from 34.9 to 40.7nmol·g and were highest in summer. Bacteria were predominant in the rhizospheres of all three plants, accounting for >63% of TPLFA. Aerobic bacteria, represented by 16:0 PLFA, were most abundant. Both organic P (OP) and inorganic P (IP) accumulated in the rhizosphere during the winter die-back phase. Furthermore, both TPLFA and bacterial PLFA decreased with increases in highly resistant OP (HR-OP), occluded P (Oc-P) and Calcium-bound P (Ca-P). This suggests that bacteria play an important role in P transformation and can make use of various P forms. We also found that SMBP was significantly negatively correlated with labile OP (L-OP), moderately labile OP (ML-OP) and HR-OP, reflecting a high degree of cross correlation between SMBP and the PLFA indices.

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“…Soil chemical analysis was carried out according to the methods described by Zhu et al (2017) and Bao (2002). Soil pH was determined with a pH meter (Mettler Toledo, China) according to the methods of Ye et al (2018) and Rana et al (2018).…”

Section: Soil and Plant Analysismentioning

confidence: 99%

Mo-Inefficient Wheat Response Toward Molybdenum Supply in Terms of Soil Phosphorus Availability

Rana

Sun

Imran

et al. 2020

J Soil Sci Plant Nutr

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Phosphorus (P) deficiency is a major constraint to crop growth due to strong soil P fixation. The effects of molybdenum (Mo) on leaf anatomy and dynamics of rhizosphere P in Mo-inefficient crops have still not been investigated. A field study was conducted to investigate the effects of long-term fertilization on dynamics of rhizosphere P transformations and leaf anatomy in Moinefficient wheat consisting of Mo (+Mo) and without Mo applied (−Mo) treatments. The results revealed that Mo supply increased plant biomass, grain yield, uptake of P and Mo by 34.9%, 14.8%, 98.1% and 654.1% respectively and preserved the leaf cuticle, stomata, chloroplast, and mesophyll tissue cell configuration. Molybdenum application significantly increased the concentration of radially available P fractions [NaHCO 3-Pi (115.5 to 129.8 mg kg −1 and 67.4 to 80.7 mg kg −1) and H 2 O-Pi (14.4-21.9 mg kg −1 and 4.63-6.40 mg kg −1)] in rhizosphere and non-rhizosphere soils, respectively. The acid phosphatase (ACP) activity (19.5 μmol day −1 g −1) was highest during March as compared to alkaline (ALP) and phytase (PHY) enzymes in the rhizosphere soil of +Mo treatment. The highest expression of gene lppC (6.11) was observed in rhizosphere soil as compared to non-rhizosphere soil which indicated that higher gene expressions induced the higher P enzymatic activities. Our findings suggest that Mo fertilizer application increases P availability through induced alteration in dynamics of rhizosphere soil P fractions, higher P and Mo assimilation and phosphatases enzymes activities along with preserving the leaf anatomy and ultrastructure of Mo-inefficient wheat.

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Phosphorus mobilization in the Yeyahu Wetland: Phosphatase enzyme activities and organic phosphorus fractions in the rhizosphere soils

Cited by 54 publications

References 38 publications

Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Effects of Straw-Return Method for the Maize–Rice Rotation System on Soil Properties and Crop Yields

Microbial community composition and activity controls phosphorus transformation in rhizosphere soils of the Yeyahu Wetland in Beijing, China

Mo-Inefficient Wheat Response Toward Molybdenum Supply in Terms of Soil Phosphorus Availability

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