Excluding Roots or Mycorrhizal Hyphae Alters the Microbial Community and Function by Decreasing Available C and N in a Subtropical Chinese Fir Forest DOI Open Access

Pingping Lian,

Linglin Xu,

Kai Yue

et al.

Forests, Journal Year: 2023, Volume and Issue: 14(9), P. 1847 - 1847

Published: Sept. 11, 2023

Carbon (C) inputs, primarily from roots and associated mycorrhizal hyphae, serve as crucial energy sources for microbial-driven C nitrogen (N) cycling in the soil. However, our understanding of how soil microbial diversity, function, properties respond to exclusion their hyphae remains limited. In study, we conducted an experiment with no or (Control), retention (NR), (NRH) a Chinese fir (Cunninghamia lanceolata) forest, most important plantation China. The properties, community diversity composition, function were investigated after 2 years exclusion. We found that significantly decreased DOC, DON, NH4+-N, NO3−-N, but not SOC, TN, TP, indicating mainly reduced available N concentrations. Meanwhile, species richness Chao1 bacteria fungi reduced, due decrease levels. These findings suggest removal results availability, subsequently leading loss diversity. Compared CT treatment, relative abundances Proteobacteria Actinobacteria phyla hyphae. Acidobacteria, WPS2, Rozellomycota, Glomeromycota showed increase treatments. Furthermore, genes degradation (e.g., malQ, malZ, chi, rfbB, bglX, ablA), fixation accA, icd, korA, korB), (nifS) increased; conversely, nasA, nirB, ureC, gdh2) treatments involving excluding results, conjunction strong relationships between functional microorganisms regulate enhance organic matter decomposition response limitation resulting root hypha Collectively, study revealed changes roots-derived directly altered soil, which influenced and, turn, regulated nutrient forest soils.

Language: Английский

Interactions of rhizosphere microbiota–environmental factors–pharmacological active ingredients of Eucommia ulmoides DOI

Chunbo Dong,

Qiuyu Shao,

Qingsong Ran

et al.

Planta, Journal Year: 2024, Volume and Issue: 259(3)

Published: Feb. 5, 2024

Language: Английский

Citations

4
The Ability of Different Tea Tree Germplasm Resources in South China to Aggregate Rhizosphere Soil Characteristic Fungi Affects Tea Quality DOI Creative Commons
Xiaoli Jia, Shaoxiong Lin, Qi Zhang

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(15), P. 2029 - 2029

Published: July 24, 2024

It is generally recognized that the quality differences in plant germplasm resources are genetically determined, and only a good "pedigree" can have quality. Ecological memory of plants rhizosphere soil fungi provides new perspective to understand this phenomenon. Here, we selected 45 tea tree analyzed fungi, nutrient content We found ecological trees for led recruitment aggregation dominant fungal populations were similar across varieties, differing number fungi. performed continuous simulation validation identify four characteristic genera determined differences. Further analysis showed greater

Language: Английский

Citations

4
Field Experiments and a Meta‐Analysis Reveal a Minor Influence of Nitrogen Addition on Phosphorus Fractions in Forests DOI
Qingshui Yu,

Xiaofeng Ni,

Frank Hagedorn

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(4)

Published: April 1, 2025

ABSTRACT Anthropogenic nitrogen (N) inputs can significantly impact nutrient cycling and ecosystem functioning in terrestrial ecosystems. However, the effects of N addition on phosphorus (P) processes forest ecosystems remain unclear. In this study, we combined data from a long‐term (11‐year) experiment across seven different forests ranging temperate to tropical biomes, with global meta‐analysis 88 relevant publications, investigate responses P cycling‐related variables We found that had little effect most (e.g., leaf P, soil total available fractions, microbial biomass P) studied The highlighted N‐induced changes were highly variable. Only few variables, such as concentration activity acid phosphatase, presented significant changed climatic zone amount duration inputs. Our study suggests largely unaffected by findings contribute better understanding prediction biogeochemical cycles context deposition related anthropogenic activities climate change.

Language: Английский

Citations

0
Soil dissolved organic matter quality and bacterial community composition regulate the substrate-binding affinity of hydrolytic enzymes under short-term nitrogen addition DOI Creative Commons
Xiaoqing Zhang, Quanxin Zeng, Xiaochun Yuan

et al.

Geoderma, Journal Year: 2024, Volume and Issue: 445, P. 116885 - 116885

Published: April 16, 2024

Soil enzymes play important roles in soil C and nutrient cycling. However, the effects of N addition on enzyme kinetics underlying mechanisms remain unclear. Thus, we aimed to determine short-term properties, microbial maximum reaction rate (Vm, which is attained at saturating substrate concentrations), Michaelis constant (Km, where a high Km indicates low affinity) C- (β-1,4-glucosidase cellobiohydrolase), N- (β-1,4-N-acetylglucosaminidase L-leucine aminopeptidase), P-degrading (acid phosphatase alkaline phosphatase) subtropical coniferous (Pinus taiwanensis) broadleaf (Castanopsis faberi) forests. In forest, increased Vm substrate-binding affinities (decline Km) by triggering P deficiency response microorganisms (i.e., biomass N:P ratio). These findings indicate that followed optimal foraging strategy addition. Moreover, reduced proportion complex organic molecules dissolved matter (DOM; e.g., abundance humic-like fluorophores humification index), suggesting DOM quality thus C-degrading enzymes. Acidobacteria Chloroflexi but Proteobacteria Rhizobiales, indicating shift community toward efficient acquisition. affected bacterial composition indirectly influenced significantly did not change other kinetics, could be partly attributed unchanged availability properties. Collectively, our provide insights into relationship between quality, are for predicting cycling parameterizing models under deposition.

Language: Английский

Citations

3
Impact of nitrogen addition on the chemical properties and bacterial community of subtropical forests in northern Guangxi DOI Creative Commons

Xingjian Jiang,

Ou Zhiyang,

Changqiang Tan

et al.

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Aug. 15, 2024

Introduction In recent years, nitrogen deposition has constantly continued to rise globally. However, the impact of on soil physicochemical properties and microbial community structure in northern Guangxi is still unclear. Methods Along these lines, this work, investigate atmospheric nutrient status bacterial subtropical regions, four different treatments (CK: 0 gN m –2 a –1 , II: 50 III: 100 IV: 150 gNm – 2 ) were established. The focus was analyzing physical chemical properties, as well characteristics across varying application levels. Results discussion From acquired results, it demonstrated that led significant decrease pH. Compared with CK, pH treatment IV decreased by 4.23%, which corresponded an increase organic carbon total nitrogen. Moreover, compared increased 9.28%, 19.69%. no available phosphorus detected. diversity index first then level. dominant phylum Acidobacteria (34.63–40.67%), Proteobacteria Chloroflexi . Interestingly, abundance notably higher levels, particularly evident group where surpassed control group. Considering addition changes nutrients lowers pH, certain oligotrophic bacteria like can be caused, showed decreasing increasing trend. On contrary, eutrophic bacteria, such Actinobacteria displayed decline. redundancy analysis, highlighted primary driving forces affecting composition.

Language: Английский

Citations

2
Mixed plantation forest litter improves microbial nitrogen transformation by increasing nitrogen metabolism related genes and key bacterial taxa in northern China DOI
Di Wu,

Changwei Yin,

Zhili Liu

et al.

Land Degradation and Development, Journal Year: 2024, Volume and Issue: 35(8), P. 2840 - 2856

Published: March 17, 2024

Abstract Nitrogen (N) metabolism is a key metabolic pathway of nutrient cycling in forest ecosystems. However, the mechanisms by which mixed plantation litter improves microbial N transformation are poorly understood. Thus, we investigated characteristics, metabolism‐related genes, and modules soil three types forests: coniferous (CP forest), broadleaf (BP forests (MCBP forest). Results indicated that total (TN), hydrolysable organic (THON), percentage values NH 4 + ‐N/TN NO 3 − BP MCBP were higher than those CP litter, was attributed to increase abundance fixation genes dissimilatory nitrate reduction genes. The increased bacterial number diversity, taxa. Bacterial 1 2 identified, consisting Acidobacteria, Actinobacteria, Chloroflexi, Nitrospirae, Proteobacteria, Gemmatimonadetes, while archaeal module 5 also module, comprising Thaumarchaeota Euryarchaeota. Nutrients limiting factor decomposition further influencing enzymes. Therefore, during northern China.

Language: Английский

Citations

2
Forest Soil Carbon Cycle in Response to Global Change DOI Open Access
Minhuang Wang,

Jinsheng Xie,

Maokui Lyu

et al.

Forests, Journal Year: 2023, Volume and Issue: 14(11), P. 2242 - 2242

Published: Nov. 14, 2023

Forests constitute a critical component of terrestrial carbon reservoirs, with substantial amount stored in soil as organic carbon, holding significant potential for climate change mitigation [...]

Language: Английский

Citations

1
Nitrogen Enrichment Regulates the Changes in Soil Aggregate-Associated Bacterial Community: Evidence from a Typical Temperate Forest DOI Open Access

Wenwen Lv,

Yulin Liu, Xuying Hai

et al.

Forests, Journal Year: 2023, Volume and Issue: 15(1), P. 77 - 77

Published: Dec. 30, 2023

The nitrogen (N) enrichment induced by atmospheric N deposition affects both soil physicochemical properties and bacterial communities. However, how aggregate-associated communities remains largely unclear. In this study, we conducted a two-year addition experiment (four levels: 0, 5, 10, 20 g m−2 year−1, corresponding to normal N, low medium high respectively) in Quercus liaotungensis Koidz–dominated forest. distribution, nutrient content, community composition of the aggregates were measured under various conditions. changed aggregate increased content nutrients aggregates, altered composition. reduced complexity co-occurrence network degraded interactions between bacteria compared with those observed level. Aggregate-associated was determined be primarily affected level but not size. litter are key factors affecting aggregates. These findings improve our understanding responses related influencing factors.

Language: Английский

Citations

1
Nitrogen and phosphorus additions alter soil N transformations in a Metasequoia glyptostroboides plantation DOI Creative Commons
Youzheng Zhang, Pengcheng Jiang,

Yaolin Guo

et al.

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: Aug. 27, 2024

Introduction Nitrogen (N) and phosphorus (P) enrichment due to anthropogenic activities can significantly affect soil N transformations in forest ecosystems. However, the effects of P additions on nitrification denitrification processes Metasequoia glyptostroboides plantations, economically important type China, remain poorly understood. Methods This study investigated responses rates, as well abundances nitrifiers denitrifiers, different levels a 6-year nutrient addition experiment M. plantation. Results Stepwise multiple regression analysis was used identify main predictors rates. The results showed that moderate (N2 treatment, 2.4 mol·m -2 ) stimulated rates ammonia-oxidizing archaea (AOA) bacteria (AOB), while excessive inhibited reduced abundance nirS -type denitrifiers. AOB predictor under additions, whereas microbial biomass carbon gene were key factors controlling Under tree growth parameters (diameter at breast height crown base height) primary Discussion Our reveals complex interactions among inputs, plant growth, properties, communities regulating plantation forests. also offers valuable insights for formulating effective management strategies enhance health plantations scenarios increasing elevated deposition.

Language: Английский

Citations

0
Effects of microarthropod density on soil fungal community composition in nutrient‐poor ecosystems DOI Creative Commons
Andrés A. Salazar‐Fillippo, Willem‐Jan Emsens,

Seppe Strybos

et al.

Functional Ecology, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 31, 2024

Abstract Microarthropods such as mites (Acari) and springtails (Collembola) play a key role in the functioning of nutrient‐poor ecosystems. They contribute to comminution organic matter they are likely affect structure function soil microbial communities through grazing by changing substrate availability. However, precise effects their interactions with microbiota remain poorly understood. In present study, we conducted mesocosm field experiment determine microarthropod density on community composition fungi. We manipulated densities 100 defaunated soil‐filled meshed mesocosms inoculating half units microarthropods (i.e. high‐density treatment), while other only contained few specimens possibly hatching from recalcitrant eggs that survived defaunation low‐density treatment). All were then inserted top range grasslands heathlands Belgium for duration three months. The entire composed mesh (30 μm size) allow rapid (re‐)colonization microbes surrounding soils, migration or out was precluded. Litter bags containing two types also buried within each mesocosm, mass loss over time used proxy assess microbe‐regulated decomposition rates. found fungal differed strongly between treatments, regardless habitat type. higher characterized number OTUs indicator species associated this treatment. Microarthropod density, however, did not rates, nor it relative abundances putative functional groups, thus suggesting considerable levels overlap. Synthesis . lack measurable changes shifts group representation suggest may be lower than originally thought. Read free Plain Language Summary article Journal blog.

Language: Английский

Citations

0