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Wang Y, Fang J, Li X, Li C, Zhao Y, Liu J. Microorganisms Directly Affected Sediment Carbon–Nitrogen Coupling in Two Constructed Wetlands. WATER 2024; 16:1550. [DOI: 10.3390/w16111550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
Clarifying the carbon–nitrogen coupling pattern in wetlands is crucial for understanding the driving mechanism of wetland carbon sequestration. However, the impacts of plants and environmental factors on the coupling of carbon–nitrogen in wetland sediments are still unclear. Sediment samples from plant (Typha angustifolia and Phragmites australis)-covered habitats and bare land were collected in two constructed wetlands in northern China. The contents of different forms of carbon and nitrogen in sediments and plants, and the sediment microbial community were detected. It was found that the sediment carbon to nitrogen (C/N) ratios did not differ significantly in the bare sites of different wetlands, but did in the plant-covered sites, which highlighted the different role of plants in shifting the carbon–nitrogen coupling in different constructed wetlands. The effects of plants on the sediment carbon–nitrogen coupling differed in two constructed wetlands, so the structural equation model was used and found that sediment microorganisms directly affected sediment C/N ratios, while water and sediment physicochemical properties indirectly affected sediment C/N ratios by altering sediment microbial functions. Multiple linear regression models showed that water pH, sediment moisture content, water dissolved oxygen, and water depth had a greater influence on the carbon metabolism potential of the sediment microbial community, while sediment moisture content had the greatest impact on the sediment microbial nitrogen metabolism potential. The study indicates that variations in environmental conditions could alter the influence of plants on the carbon and nitrogen cycles of wetland sediments. Water environmental factors mainly affect microbial carbon metabolism functions, while soil physicochemical factors, especially water content, affect microbial carbon and nitrogen metabolism functions.
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Affiliation(s)
- Yan Wang
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Jiaohui Fang
- School of Life Sciences, Qufu Normal University, Qufu 273100, China
| | - Xin Li
- Jinan Environmental Research Academy, Jinan 250000, China
| | - Changchao Li
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
| | - Yongkang Zhao
- Environment Research Institute, Shandong University, Qingdao 266237, China
| | - Jian Liu
- Environment Research Institute, Shandong University, Qingdao 266237, China
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Baranowska M, Behnke-Borowczyk J, Barzdajn W, Szmyt J, Korzeniewicz R, Łukowski A, Memišević-Hodžić M, Kartawik N, Kowalkowski W. Effects of nursery production methods on fungal community diversity within soil and roots of Abies alba Mill. Sci Rep 2023; 13:21284. [PMID: 38042872 PMCID: PMC10693611 DOI: 10.1038/s41598-023-48047-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 11/21/2023] [Indexed: 12/04/2023] Open
Abstract
The aim of this study was to elucidate how different nursery production methods influence the composition of and relationship between soil and root community levels of Abies alba. In the Międzylesie Forest District, we quantified the responses of samples of both community-level fine roots and surrounding soil to environmental changes evoked by various seedling production methods. Fungi levels were identified based on their ITS 1 region and 5.8 S rDNA component. Analysis was conducted using Illumina SBS technology, and the obtained sequences were compared with reference samples deposited in the UNITE. Chemical analysis of the soil was also performed. Different nursery production methods resulted in a strong decoupling in the responses of fungal community levels between soil and roots. Changes in growth conditions imposed by production methods were significant in determining species composition. We found differences in fungal communities among functional groups of samples. In the soil, the dominant species of mycorrhizal fungi were Tylospora asterophora, Amanita rubescens, and Russula ionochlora. Mycorrhizal fungi in roots included Tuber anniae, Thelephoraceae sp., and Acephala applanata. Specific soil substrate conditions significantly influenced fungal community composition, leading to an increase in abundance of mycorrhizal fungi, specifically T. anniae.
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Affiliation(s)
- Marlena Baranowska
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Jolanta Behnke-Borowczyk
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Władysław Barzdajn
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Janusz Szmyt
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Robert Korzeniewicz
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Adrian Łukowski
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Mirzeta Memišević-Hodžić
- Faculty of Forestry, University of Sarajevo, Zagrebačka 20, 71000, Sarajevo, Bosnia and Herzegovina
| | - Natalia Kartawik
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland
| | - Wojciech Kowalkowski
- Faculty of Forestry and Wood Technology, Poznań University of Life Sciences, Wojska Polskiego 71a, 60-625, Poznan, Poland.
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Waring EF, Perkowski EA, Smith NG. Soil nitrogen fertilization reduces relative leaf nitrogen allocation to photosynthesis. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:5166-5180. [PMID: 37235800 DOI: 10.1093/jxb/erad195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 05/25/2023] [Indexed: 05/28/2023]
Abstract
The connection between soil nitrogen availability, leaf nitrogen, and photosynthetic capacity is not perfectly understood. Because these three components tend to be positively related over large spatial scales, some posit that soil nitrogen positively drives leaf nitrogen, which positively drives photosynthetic capacity. Alternatively, others posit that photosynthetic capacity is primarily driven by above-ground conditions. Here, we examined the physiological responses of a non-nitrogen-fixing plant (Gossypium hirsutum) and a nitrogen-fixing plant (Glycine max) in a fully factorial combination of light by soil nitrogen availability to help reconcile these competing hypotheses. Soil nitrogen stimulated leaf nitrogen in both species, but the relative proportion of leaf nitrogen used for photosynthetic processes was reduced under elevated soil nitrogen in all light availability treatments due to greater increases in leaf nitrogen content than chlorophyll and leaf biochemical process rates. Leaf nitrogen content and biochemical process rates in G. hirsutum were more responsive to changes in soil nitrogen than those in G. max, probably due to strong G. max investments in root nodulation under low soil nitrogen. Nonetheless, whole-plant growth was significantly enhanced by increased soil nitrogen in both species. Light availability consistently increased relative leaf nitrogen allocation to leaf photosynthesis and whole-plant growth, a pattern that was similar between species. These results suggest that the leaf nitrogen-photosynthesis relationship varies under different soil nitrogen levels and that these species preferentially allocated more nitrogen to plant growth and non-photosynthetic leaf processes, rather than photosynthesis, as soil nitrogen increased.
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Affiliation(s)
- Elizabeth F Waring
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, USA
- Department of Natural Sciences, Northeastern State University, Tahlequah, OK, USA
| | - Evan A Perkowski
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, USA
| | - Nicholas G Smith
- Department of Biological Sciences, Texas Tech University, Lubbock, TX, USA
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Wang Y, Wu F, Li X, Li C, Zhao Y, Gao Y, Liu J. Effects of plants and soil microorganisms on organic carbon and the relationship between carbon and nitrogen in constructed wetlands. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:62249-62261. [PMID: 36940031 DOI: 10.1007/s11356-023-26489-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 03/13/2023] [Indexed: 05/10/2023]
Abstract
Constructed wetland is an ideal place for studying the effects of plants and microorganisms on the nutrient cycling and carbon-nitrogen coupling in wetland for their clear background. This study examined both bare plots and others with plants (Phragmites australis or Typha angustifolia) in constructed wetlands and vegetation and soil samples were collected to investigate the effects of plants and soil microorganisms on carbon and nitrogen content. Results showed that the soil organic carbon content was high in plots with high plant biomass, and the increase of soil organic carbon driven by plant biomass was mainly from light fraction organic carbon (LFOC). Correlation analysis and redundancy analysis (RDA) suggested that plants play an important role in the cycle of carbon and nitrogen elements in constructed wetland soils, and that plant nitrogen components were key factors influencing wetland soil carbon and nitrogen. In addition, this study found that most of the main microbial taxa were significantly correlated with dissolved organic carbon (DOC), ammonium nitrogen (NH4+), and nitrate and nitrite nitrogen (NOx-) indicating that microorganisms might play an important role in regulating soil element cycles in constructed wetlands by affecting the metabolism of activated carbon and reactive nitrogen. This study has implications for increasing the carbon sink of constructed wetlands to mitigate the effects of global warming.
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Affiliation(s)
- Yan Wang
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Fan Wu
- Jinan Environmental Research Academy, Jinan, 250000, China
| | - Xin Li
- Jinan Environmental Research Academy, Jinan, 250000, China
| | - Changchao Li
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Yongkang Zhao
- Environment Research Institute, Shandong University, Qingdao, 266237, China
| | - Yuxue Gao
- Jinan Environmental Research Academy, Jinan, 250000, China
| | - Jian Liu
- Environment Research Institute, Shandong University, Qingdao, 266237, China.
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Lu J, Yang J, Keitel C, Yin L, Wang P, Cheng W, Dijkstra FA. Belowground Carbon Efficiency for Nitrogen and Phosphorus Acquisition Varies Between Lolium perenne and Trifolium repens and Depends on Phosphorus Fertilization. FRONTIERS IN PLANT SCIENCE 2022; 13:927435. [PMID: 35812934 PMCID: PMC9263692 DOI: 10.3389/fpls.2022.927435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Photosynthetically derived carbon (C) is allocated belowground, allowing plants to obtain nutrients. However, less is known about the amount of nutrients acquired relative to the C allocated belowground, which is referred to as C efficiency for nutrient acquisition (CENA). Here, we examined how C efficiency for nitrogen (N) and phosphorus (P) acquisition varied between ryegrass (Lolium perenne) and clover (Trifolium repens) with and without P fertilization. A continuous 13C-labeling method was applied to track belowground C allocation. Both species allocated nearly half of belowground C to rhizosphere respiration (49%), followed by root biomass (37%), and rhizodeposition (14%). With regard to N and P, CENA was higher for clover than for ryegrass, which remained higher after accounting for relatively low C costs associated with biological N2 fixation. Phosphorus fertilization increased the C efficiency for P acquisition but decreased the C efficiency for N acquisition. A higher CENA for N and P in clover may be attributed to the greater rhizosphere priming on soil organic matter decomposition. Increased P availability with P fertilization could induce lower C allocation for P uptake but exacerbate soil N limitation, thereby making N uptake less C efficient. Overall, our study revealed that species-specific belowground C allocation and nutrient uptake efficiency depend on which nutrient is limited.
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Affiliation(s)
- Jiayu Lu
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
- School of Life and Environmental Sciences, Sydney Institute of Agriculture, The University of Sydney, Sydney, NSW, Australia
| | - Jinfeng Yang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, College of Land and Environment, Shenyang Agricultural University, Shenyang, China
| | - Claudia Keitel
- School of Life and Environmental Sciences, Sydney Institute of Agriculture, The University of Sydney, Sydney, NSW, Australia
| | - Liming Yin
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Peng Wang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
| | - Weixin Cheng
- Environmental Studies Department, University of California, Santa Cruz, Santa Cruz, CA, United States
| | - Feike A. Dijkstra
- School of Life and Environmental Sciences, Sydney Institute of Agriculture, The University of Sydney, Sydney, NSW, Australia
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