Disentangling the relative importance of precipitation, biocrust succession, and shrub cover in mediating soil phoD-harbouring communities and organic phosphorus mineralisation

Xu, Lin; Li, Xiangzhen; Li, Chaonan; Kou, Yongping; Li, Jiabao; Yao, Minjie; Zhang, Bingchang; Wang, Lixia; Xu, Hongwei; You, Chengming; Li, Han; Liu, Sining; Zhang, Li; Liu, Yang; Tan, Bo; Xu, Zhenfeng

doi:10.1016/j.soilbio.2023.109165

Cited by 4 publications

(2 citation statements)

References 75 publications

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“…Available P was extracted with 0.5 M NaHCO 3 and measured using the ammonium molybdate method, then analyzed by a Visible Spectrophotometer (V-5800, Shanghai Metash Instruments Co., Ltd., Shanghai, China) [37]. ExMg 2+ and ExCa 2+ were displaced via compulsive exchange in 1 M ammonium acetate at pH 7.0 and analyzed using inductively coupled plasma atomic emission spectroscopy (ICP-AES, Optima 7000 DV, Perkin Elmer Technologies, Waltham, MA, USA) [16]. Soil MBC and MBP were determined using chloroform fumigation, followed by leaching.…”

Section: General Soil Parametersmentioning

confidence: 99%

“…For instance, the relative abundances of phoD-harboring microorganisms are high in low-available P soils of ecosystems from the Asian and European regions, and Bradyrhizobium genera are dominant in these ecosystems [13,14]. This indicates that phoD-harboring microorganisms play an important role in the P cycle, especially in poor soil-available P ecosystems [15,16].…”

Section: Introductionmentioning

confidence: 99%

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The phoD-Harboring Microorganism Communities and Networks in Karst and Non-Karst Forests in Southwest China

Chen,

Qin,

Liang

et al. 2024

Forests

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Phosphorous (P) limitation is common not only in tropical rainforest and savanna ecosystems, but also in karst forest ecosystems. Soil phoD-harboring microorganisms are essential in soil P cycles, but very little information is available about them in karst ecosystems. A total of 36 soil samples were collected from two types of forest ecosystems (karst and non-karst) over two seasons (rainy and dry), and the diversity and community structure of soil phoD-harboring microorganisms were measured. The contents of available P (AP), soil total P (TP), microbial biomass P (MBP) and the activity of alkaline phosphatase (ALP) in karst forest soils were higher than those in non-karst forest soils, whereas the contents of CaCl2-P, citrate-P, enzyme-P and the activity of acid phosphatase (ACP) were the opposite. Soil AP content was significantly higher in the rainy season than in the dry season, whereas ALP activity was the opposite. The community structure of phoD-harboring microorganisms was more influenced by forest-type than season. The network connectivity was higher in non-karst forests than in karst forests. Two dominant orders, Burkholderiales and Rhizobiales, were the keystone taxa in these networks in two forests, and their relative abundances were higher in non-karst forests than in karst forests. The microorganic diversity indices (e.g., Shannon–Wiener, Evenness, Richness, and Chao1) were substantially higher in karst than in non-karst forests. These indices were positively correlated with the contents of SOC and TN in the two forests; meanwhile, richness and evenness indices were positively correlated with citrate-P, HCl-P, and TP in non-karst forests. Structural equation modelling results showed that the relative abundance of phoD-harboring microorganisms was mainly influenced by pH and AP, with direct affection of soil AP, pH, and ALP activity, and indirect affection of ALP activity through affecting AP. These findings highlight that the P cycle is mainly regulated by the diversity of phoD-harboring microorganisms in karst forest ecosystems, whereas it is mainly regulated by dominant taxa in non-karst forest ecosystems. In future, regulating the interaction networks and keystone taxa of phoD-harboring microorganisms may be critical to alleviating P limitations in karst forest ecosystems.

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Section: General Soil Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The phoD-Harboring Microorganism Communities and Networks in Karst and Non-Karst Forests in Southwest China

Chen,

Qin,

Liang

et al. 2024

Forests

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Rare and Abundant phoD‐Harboring Bacteria Mediate the Mineralization of Organic Phosphorus Fractions in Soil Aggregates During Cut Slope Restoration

Liu,

Ai,

Sheng

et al. 2024

Land Degrad Dev

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Phosphorus (P) is the key nutritional element in the soil of cut road slopes undergoing ecological restoration, and the transformation of organic P (Po) is a crucial part of the P cycle. However, the role of phoD‐harboring bacteria in driving the mineralization of Po fractions in road slope soil aggregates is unclear. This study analyzed road slope soils that had undergone 7, 11, and 14 years of restoration in the western Sichuan Plateau of China. We examined the differences and associations between the Po fraction content, alkaline phosphatase (ALP) activity, and community composition of rare and abundant phoD‐harboring bacteria in soil aggregates of four particle sizes (0.053–0.25, 0.25–2, 0.053–0.25, and, > 2 mm). The results showed that NaHCO3‐extracted Po (NaHCO3‐Po) content in soil aggregates increased with restoration years, while NaOH‐extracted Po (NaOH‐Po) content decreased. ALP activity in soil aggregates increased with restoration years, but there was no significant relationship between ALP activity with the phoD‐harboring bacterial community. There were significant differences in the composition of rare and abundant phoD‐harboring bacterial communities during slope restoration. Soil moisture, pH, organic carbon, and the C:P ratio in soil aggregates were the primary factors affecting the distribution of the Po fractions and the phoD‐harboring bacterial community. NaHCO3‐Po and NaOH‐Po in soil aggregates were likely the main substrates for ALP‐mediated Po mineralization. More genera were involved in Po mineralization in slope soils restored for 14 years than in soils restored for 7 and 11 years, and rare phoD‐harboring genera were more actively involved in Po mineralization than abundant phoD‐harboring genera. This study provides some theoretical basis for P effectiveness enhancement and P management during slope soil restoration.

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Deciphering bioprocess responses in organic phosphorus mineralization to different antibiotic stresses: Interaction mechanisms mediated by microbial succession and extracellular polymeric substances and regulatory patterns

Wu,

Kang,

Mao

et al. 2025

Bioresource Technology

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Disentangling the relative importance of precipitation, biocrust succession, and shrub cover in mediating soil phoD-harbouring communities and organic phosphorus mineralisation

Cited by 4 publications

References 75 publications

The phoD-Harboring Microorganism Communities and Networks in Karst and Non-Karst Forests in Southwest China

The phoD-Harboring Microorganism Communities and Networks in Karst and Non-Karst Forests in Southwest China

Rare and Abundant phoD‐Harboring Bacteria Mediate the Mineralization of Organic Phosphorus Fractions in Soil Aggregates During Cut Slope Restoration

Deciphering bioprocess responses in organic phosphorus mineralization to different antibiotic stresses: Interaction mechanisms mediated by microbial succession and extracellular polymeric substances and regulatory patterns

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