Arbuscular mycorrhizal fungi alleviate erosion-induced soil nutrient losses in experimental agro-ecosystems

Gou, Xiaomei; Ni, Huaqian; Sadowsky, Michael J.; Chang, Xingchen; Liu, Wenjing; Wei, Xiaorong

doi:10.1016/j.catena.2022.106687

Cited by 10 publications

(7 citation statements)

References 89 publications

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“…Under AM + ECM type, soil total microbial biomass, fungal and bacterial biomass significantly decreased with LUTs (biomass in natural > plantation > agroecosystem), which is in agreement with the results that global SMB decreased with land use intensification from Wan et al (2021). However, such patterns were not found under AM type, which may partly result from the fact that AMF could reduce erosioninduced soil nutrient losses in agroecosystems (Gou et al, 2023). Besides, AMF colonization was also reported to be associated with buffering against anthropogenic impacts on soil microbial community (Thangavel et al, 2022).…”

Section: Discussionsupporting

confidence: 88%

“…(2021). However, such patterns were not found under AM type, which may partly result from the fact that AMF could reduce erosion‐induced soil nutrient losses in agroecosystems (Gou et al., 2023). Besides, AMF colonization was also reported to be associated with buffering against anthropogenic impacts on soil microbial community (Thangavel et al., 2022).…”

Section: Discussionmentioning

confidence: 99%

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Mycorrhizal Types Modulate Responses of Global Soil Microbial Biomass to Environments Across Varied Land Use Types

Yuan,

Shi,

Wang

et al. 2024

Global Biogeochemical Cycles

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Soil microbial biomass (SMB) is a fundamental contributor to soil ecosystem services. Mycorrhizal fungi, a significant group of soil microbes, play essential roles in regulating carbon allocation and nutrient cycles. Acknowledging the profound importance of SMB and mycorrhizal symbiosis, our objective was to explore how mycorrhizal types modulate the global patterns of SMB across varied land use types (LUTs). Using data from 329 independent studies, we categorized vegetation species with defined mycorrhizal types into arbuscular mycorrhizal (AM) type (with 958 observations) or mixed AM and ectomycorrhizal (AM + ECM) type (with 481 observations). This categorization served as the foundation for our investigation into the impacts of various LUTs and environmental conditions (mean annual temperature, and mean annual precipitation, MAP) on global SMB patterns associated with specific mycorrhizal associations. The overall mean value of SMB was remarkably higher under AM + ECM type (92.23 ± 4.73 nmol/g) compared with that under AM type (49.45 ± 1.87 nmol/g) at a global scale. The primary factor contributing to this difference was the natural system. Additionally, the AM + ECM type (0.19 ± 0.01) exhibited a higher F:B ratio (Fungi‐to‐bacteria ratio) than the AM type (0.16 ± 0.001), attributed to the cumulative effects of different LUTs. Furthermore, SMB was markedly positively affected by aridity index under AM type and negatively influenced by temperature under AM + ECM type. Besides, MAP had a pronounced positive impact on SMB under AM type, while exhibiting a negative impact under AM + ECM type. Our study presented evidence affirming the essential role of mycorrhizal associations in shaping global patterns of SMB in response to environmental factors across varied LUTs.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 99%

Mycorrhizal Types Modulate Responses of Global Soil Microbial Biomass to Environments Across Varied Land Use Types

Yuan,

Shi,

Wang

et al. 2024

Global Biogeochemical Cycles

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“…Moreover, North American native grasslands are invaded by an exotic grass, Setaria faberi; in greenhouse bioassays Koziol et al [154] showed that the inoculation with native AMF plus ex-arable soil experimental treatments increase the abundance of native plants, plants in the late successional grassland stage, and total plant diversity also were greatest, together with the increment of native seedlings establishment; furthermore, this native plant's population improvement was concomitant with the reduction in the invasive S. faberi [154]. In addition, Gou et al [155] demonstrated that inoculation with AMF in agroecosystems significantly reduced the nutrient losses induced by soil erosion and proposed the use of AMF inoculation as a sustainability support among these and other environments. This type of inoculation study, with native inoculants applied as amendments in the field and in greenhouses in the short, medium, and long term in grassy ecosystems, with and without grazing, does not exist in South America.…”

Section: Discussionmentioning

confidence: 99%

The Diversity of Arbuscular Mycorrhizal Fungi and Their Associations in South America: A Case Study of Argentinean and Brazilian Cattle Raising Productive Ecosystems: A Review

Lugo,

Ontivero,

Iriarte

et al. 2023

Diversity

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Mycorrhizal fungus diversity is an ecosystem health indicator, and thus, the appreciation of the aboveground as well as the belowground biota, such as fungi associated with natural and managed ecosystems, is essential to provide sustainable products and suggestions to farmers. Less is known about the totally arbuscular mycorrhizal fungi (AMF) and fungal endophytes useful to agroecology, which are environment friendly microbial biofertilizers to mitigate the complications of conventional farming. Specific AMF are found in most covers; grassy ecosystems are increasingly investigated through their exclusive fungal species that improve sustainable cultivation. Different grazed pastures, forages, and their diversity are important objects of study either in economic or ecological scope. Based on recent reports, the occurrence of AMF in grasslands and pastures is significant, supporting more diverse AMF than native forests. Therefore, we show current information on these topics. We conducted a Web of Science search of published articles on AMF, pastures, and grasslands and analyzed them. The results confirmed the important role of pH as the driver of AMF diversity distribution between the grassy ecosystems from Argentina and Brazil. In grasslands, the main family represented was Glomeraceae, while pastures maintain predominantly Acaulosporaceae. Brazilian grasslands and pastures presented four times the AMF richness of those from Argentina.

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“…Adjusting N content alone would affect soil N and organic matter, leading to a response of soil microbial biomass [47]. However, soil physical and chemical parameters are also dependent on crop uptake [48]. Lower soil N…”

Section: Discussionmentioning

confidence: 99%

Synergistic Effects of N Fertilization and Irrigation on Soil Bacterial Community in Super Rice Paddies

Qian,

Huang,

Xie

et al. 2023

Agronomy

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Nitrogen reduction, in association with increased planting density and irrigation management, has been widely adopted in super rice cultivation systems to pursue higher yield with lower input. Here, soil microbial community structures under accurate N and water management were investigated after four years of experiments. Plot experiments were conducted with three treatments, including conventional farming practice (CF), reduced nitrogen with increased plant density (RNID), and reduced nitrogen with increased plant density and precise irrigation (RNIDPI). The results showed that RNID treatment increased soil bacterial diversity, enriched biomarker bacterial taxa, and altered bacterial community structure, with pH as the influential factor. The phylum Chloroflexi was enriched in the treatment of N reduction, while a higher ratio of Firmicutes was present in CF treatments. RNID treatment witnessed a low proportion of bacterial functional groups involved in nitrification and nitrate reduction. N fertilizer reduction with irrigation management increased rice yield (up to 22%) without changing the major soil fertility properties except for the increased pH and decreased ammonium N. The results suggest that N reduction, in association with increased plant density and accurate irrigation, is beneficial for super rice production.

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Arbuscular mycorrhizal fungi alleviate erosion-induced soil nutrient losses in experimental agro-ecosystems

Cited by 10 publications

References 89 publications

Mycorrhizal Types Modulate Responses of Global Soil Microbial Biomass to Environments Across Varied Land Use Types

Mycorrhizal Types Modulate Responses of Global Soil Microbial Biomass to Environments Across Varied Land Use Types

The Diversity of Arbuscular Mycorrhizal Fungi and Their Associations in South America: A Case Study of Argentinean and Brazilian Cattle Raising Productive Ecosystems: A Review

Synergistic Effects of N Fertilization and Irrigation on Soil Bacterial Community in Super Rice Paddies

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