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Article ; Online: Canopy nitrogen addition and understory removal destabilize the microbial community in a subtropical Chinese fir plantation.

Li, Debao / Wu, Jianping

2024 Volume 354, Page(s) 120407

Abstract: Subtropical Chinese fir plantations have been experiencing increased nitrogen deposition and understory management because of human activities. Nevertheless, effect of increased nitrogen deposition and understory removal in the plantations on microbial ... ...

Abstract	Subtropical Chinese fir plantations have been experiencing increased nitrogen deposition and understory management because of human activities. Nevertheless, effect of increased nitrogen deposition and understory removal in the plantations on microbial community stability and the resulting consequences for ecosystem functioning is still unclear. We carried out a 5-year experiment of canopy nitrogen addition (2.5 g N m
MeSH term(s)	Humans ; Ecosystem ; Forests ; Cunninghamia ; Nitrogen/analysis ; Phylogeny ; Soil Microbiology ; Soil/chemistry ; Microbiota ; Bacteria ; China
Chemical Substances	Nitrogen (N762921K75) ; Soil
Language	English
Publishing date	2024-02-17
Publishing country	England
Document type	Journal Article
ZDB-ID	184882-3
ISSN	1095-8630 ; 0301-4797
ISSN (online)	1095-8630
ISSN	0301-4797
DOI	10.1016/j.jenvman.2024.120407
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Article ; Online: Soil fungal community has higher network stability than bacterial community in response to warming and nitrogen addition in a subtropical primary forest.

Li, Debao / Wu, Chuansheng / Wu, Jianping

Applied and environmental microbiology

2024 , Page(s) e0000124

Abstract: Global change factors are known to strongly affect soil microbial community function and composition. However, as of yet, the effects of warming and increased anthropogenic nitrogen deposition on soil microbial network complexity and stability are still ... ...

Abstract	Global change factors are known to strongly affect soil microbial community function and composition. However, as of yet, the effects of warming and increased anthropogenic nitrogen deposition on soil microbial network complexity and stability are still unclear. Here, we examined the effects of experimental warming (3°C above ambient soil temperature) and nitrogen addition (5 g N m Importance: Soil microbes play a very important role in maintaining the function and health of forest ecosystems. Unfortunately, global change factors are profoundly affecting soil microbial structure and function. In this study, we found that climate warming promoted bacterial network stability and nitrogen deposition decreased bacterial network stability. Changes in bacterial network stability had strong effects on bacterial community functional potentials linked to metabolism, nitrogen cycling, and carbon cycling, which would change the biogeochemical cycle in primary forests.
Language	English
Publishing date	2024-05-21
Publishing country	United States
Document type	Journal Article
ZDB-ID	223011-2
ISSN	1098-5336 ; 0099-2240
ISSN (online)	1098-5336
ISSN	0099-2240
DOI	10.1128/aem.00001-24
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Article ; Online: Nutritional and volatile profiles of pulp and flavedo from four local pummelo cultivars grown in Fujian province of China

Zhou, Jinyu / Kong, Lingchao / Li, Debao / Zhang, Xinxin / Fu, Zhijun / Pan, Tengfei / Yu, Yuan

Journal of Food Science. 2023 Aug., v. 88, no. 8 p.3357-3372

2023

Abstract: The nutritional and volatile profiles of pulp and flavedo samples from four distinct local pummelo landraces (“Siji,” “Pingshan,” “Wendan,” and “Guanxi”) cultivated in Fujian province of China were investigated. “Guanxi” pummelo exhibited relatively high ...

Abstract	The nutritional and volatile profiles of pulp and flavedo samples from four distinct local pummelo landraces (“Siji,” “Pingshan,” “Wendan,” and “Guanxi”) cultivated in Fujian province of China were investigated. “Guanxi” pummelo exhibited relatively high contents of vitamin C (42.01 mg/100 mL) and phenols (360.61 mg/L) and displayed a robust antioxidant capacity (41.15 mg/100 mL). Conversely, the red pulp from “Pingshan” demonstrated relatively high values of carotenoids (55.96 µg/g) and flavonoids (79.79 mg/L). Considerable differences were observed in volatile compositions between the two fruit tissues and among the four genotypes. A total of 166 and 255 volatile compounds were detected in the pulp and flavedo samples, respectively. Notably, limonene and β‐myrcene were identified as the principal volatile compounds in flavedo, whereas hexanal was highly abundant in the pulp of “Siji,” “Pingshan,” and “Guanxi.” “Wendan” displayed distinct separation from the other three pummelo cultivars in principal component analysis based on the pulp volatile compositions. This distinction was attributed to the higher number and content of volatile compounds in “Wendan” pulp, particularly the remarkable enrichment of β‐myrcene. The newly characterized pummelo landraces and genotype/tissue‐dependent variations in volatiles provide essential information for the genetic improvement of pummelo aroma, as well as for fruit processing and utilization.
Keywords	antioxidant activity ; ascorbic acid ; carotenoids ; cultivars ; flavonoids ; food science ; fruits ; genetic improvement ; landraces ; limonene ; odors ; principal component analysis ; pulp ; pummelos ; China
Language	English
Dates of publication	2023-08
Size	p. 3357-3372.
Publishing place	John Wiley & Sons, Ltd
Document type	Article ; Online
Note	JOURNAL ARTICLE
ZDB-ID	241615-3
ISSN	1750-3841 ; 0022-1147
ISSN (online)	1750-3841
ISSN	0022-1147
DOI	10.1111/1750-3841.16701
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Article ; Online: Compartments of roots and mature leaves are key hubs in the connectivity of tea-plant mycobiomes and are influenced by environmental factors and host age

Li, Taiqiang / Li, Debao / Chen, Xianggui / Gérard, François / Li, Minguo / Wu, Jianping / Gao, Jiangyun

Science of the Total Environment. 2023 Oct., v. 893 p.164827-

2023

Abstract: Understanding the tripartite consortium of crop, mycobiome, and environment is necessary to advance smart farming. Owing to their life cycle of hundreds of years, tea plants are excellent models for studying these entwined relationships; however, ... ...

Abstract	Understanding the tripartite consortium of crop, mycobiome, and environment is necessary to advance smart farming. Owing to their life cycle of hundreds of years, tea plants are excellent models for studying these entwined relationships; however, observations on this globally important cash crop with numerous health benefits are still rudimentary. Here, the fungal taxa along the soil–tea plant continuum in tea gardens of different ages in famous high-quality tea-growing regions in China were characterized using DNA metabarcoding. Using machine learning, we dissected the spatiotemporal distribution, co-occurrence patterns, assembly, and their associations in different compartments of tea-plant mycobiomes, and further explored how these potential interactions were driven by environmental factors and tree age, and how they influenced the market prices of tea. The results revealed that Compartment niche differentiation was the key driving force behind variation in the tea-plant mycobiome. The mycobiome of roots had the highest specific proportion and convergence and almost did not overlap with the soil. The enrichment ratio of developing leaves to root mycobiome increased with increasing tree age, while mature leaves showed the highest value in the Laobanzhang (LBZ) tea garden with top market prices and displayed the strongest depletion effect on mycobiome association along the soil–tea plant continuum. The balance between determinism and stochasticity in the assembly process was co-driven by compartment niches and life cycle variation. Fungal guild analysis showed that altitude indirectly affected market prices of tea by mediating the abundance of the plant pathogen. The relative importance of plant pathogen and ectomycorrhizae could be used to assess the age of tea. Biomarkers were mainly distributed in soil compartments, and Clavulinopsis miyabeana, Mortierella longata, and Saitozyma sp. may affect the spatiotemporal dynamics of tea-plant mycobiomes and their ecosystem services. Soil properties (mainly total potassium) and tree age indirectly affected the developing leaves via positively influencing the mycobiome of mature leaves. In contrast, the climate directly and significantly drove the mycobiome composition of the developing leaves. Moreover, the proportion of negative correlations in the co-occurrence network positively regulated tea-plant mycobiome assembly, which significantly affected the market prices of tea in the structural equation model with network complexity as hub. These findings indicate that mycobiome signatures play pivotal roles in the adaptive evolution and fungal disease control of tea plants and can help develop better agricultural practices that focus on both plant health and financial profits, and provide a new strategy for assessing tea quality grade and age.
Keywords	Clavulinopsis ; DNA barcoding ; Mortierella ; altitude ; biomarkers ; cash crops ; climate ; disease control ; ecological differentiation ; ecosystems ; ectomycorrhizae ; evolutionary adaptation ; fungi ; gardens ; markets ; plant pathogens ; potassium ; soil ; structural equation modeling ; tea ; tree age ; China ; LBZ ; NNS ; MS ; TZS ; GFI ; NFI ; TLI ; AIC ; RMSEA ; Plant–microbiome–environment interactions ; Ancient tea garden ; Compartment niche connectivity ; Host filtering effects ; Plant pathogen ; Tea market price
Language	English
Dates of publication	2023-10
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.164827
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Article ; Online: Compartments of roots and mature leaves are key hubs in the connectivity of tea-plant mycobiomes and are influenced by environmental factors and host age.

Li, Taiqiang / Li, Debao / Chen, Xianggui / Gérard, François / Li, Minguo / Wu, Jianping / Gao, Jiangyun

The Science of the total environment

2023 Volume 893, Page(s) 164827

Abstract	Understanding the tripartite consortium of crop, mycobiome, and environment is necessary to advance smart farming. Owing to their life cycle of hundreds of years, tea plants are excellent models for studying these entwined relationships; however, observations on this globally important cash crop with numerous health benefits are still rudimentary. Here, the fungal taxa along the soil-tea plant continuum in tea gardens of different ages in famous high-quality tea-growing regions in China were characterized using DNA metabarcoding. Using machine learning, we dissected the spatiotemporal distribution, co-occurrence patterns, assembly, and their associations in different compartments of tea-plant mycobiomes, and further explored how these potential interactions were driven by environmental factors and tree age, and how they influenced the market prices of tea. The results revealed that Compartment niche differentiation was the key driving force behind variation in the tea-plant mycobiome. The mycobiome of roots had the highest specific proportion and convergence and almost did not overlap with the soil. The enrichment ratio of developing leaves to root mycobiome increased with increasing tree age, while mature leaves showed the highest value in the Laobanzhang (LBZ) tea garden with top market prices and displayed the strongest depletion effect on mycobiome association along the soil-tea plant continuum. The balance between determinism and stochasticity in the assembly process was co-driven by compartment niches and life cycle variation. Fungal guild analysis showed that altitude indirectly affected market prices of tea by mediating the abundance of the plant pathogen. The relative importance of plant pathogen and ectomycorrhizae could be used to assess the age of tea. Biomarkers were mainly distributed in soil compartments, and Clavulinopsis miyabeana, Mortierella longata, and Saitozyma sp. may affect the spatiotemporal dynamics of tea-plant mycobiomes and their ecosystem services. Soil properties (mainly total potassium) and tree age indirectly affected the developing leaves via positively influencing the mycobiome of mature leaves. In contrast, the climate directly and significantly drove the mycobiome composition of the developing leaves. Moreover, the proportion of negative correlations in the co-occurrence network positively regulated tea-plant mycobiome assembly, which significantly affected the market prices of tea in the structural equation model with network complexity as hub. These findings indicate that mycobiome signatures play pivotal roles in the adaptive evolution and fungal disease control of tea plants and can help develop better agricultural practices that focus on both plant health and financial profits, and provide a new strategy for assessing tea quality grade and age.
MeSH term(s)	Ecosystem ; Fungi ; Mycobiome/genetics ; Plant Leaves ; Plant Roots/microbiology ; Plants ; Soil ; Soil Microbiology ; Tea ; Trees/microbiology
Chemical Substances	Soil ; Tea
Language	English
Publishing date	2023-06-13
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	121506-1
ISSN	1879-1026 ; 0048-9697
ISSN (online)	1879-1026
ISSN	0048-9697
DOI	10.1016/j.scitotenv.2023.164827
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Article ; Online: Nutritional and volatile profiles of pulp and flavedo from four local pummelo cultivars grown in Fujian province of China.

Zhou, Jinyu / Kong, Lingchao / Li, Debao / Zhang, Xinxin / Fu, Zhijun / Pan, Tengfei / Yu, Yuan

Journal of food science

2023 Volume 88, Issue 8, Page(s) 3357–3372

Abstract: The nutritional and volatile profiles of pulp and flavedo samples from four distinct local pummelo landraces ("Siji," "Pingshan," "Wendan," and "Guanxi") cultivated in Fujian province of China were investigated. "Guanxi" pummelo exhibited relatively high ...

Abstract	The nutritional and volatile profiles of pulp and flavedo samples from four distinct local pummelo landraces ("Siji," "Pingshan," "Wendan," and "Guanxi") cultivated in Fujian province of China were investigated. "Guanxi" pummelo exhibited relatively high contents of vitamin C (42.01 mg/100 mL) and phenols (360.61 mg/L) and displayed a robust antioxidant capacity (41.15 mg/100 mL). Conversely, the red pulp from "Pingshan" demonstrated relatively high values of carotenoids (55.96 µg/g) and flavonoids (79.79 mg/L). Considerable differences were observed in volatile compositions between the two fruit tissues and among the four genotypes. A total of 166 and 255 volatile compounds were detected in the pulp and flavedo samples, respectively. Notably, limonene and β-myrcene were identified as the principal volatile compounds in flavedo, whereas hexanal was highly abundant in the pulp of "Siji," "Pingshan," and "Guanxi." "Wendan" displayed distinct separation from the other three pummelo cultivars in principal component analysis based on the pulp volatile compositions. This distinction was attributed to the higher number and content of volatile compounds in "Wendan" pulp, particularly the remarkable enrichment of β-myrcene. The newly characterized pummelo landraces and genotype/tissue-dependent variations in volatiles provide essential information for the genetic improvement of pummelo aroma, as well as for fruit processing and utilization.
MeSH term(s)	Carotenoids/analysis ; Acyclic Monoterpenes ; Flavonoids ; Fruit/chemistry ; Volatile Organic Compounds/analysis ; Citrus/genetics
Chemical Substances	beta-myrcene (123-35-3) ; Carotenoids (36-88-4) ; Acyclic Monoterpenes ; Flavonoids ; Volatile Organic Compounds
Language	English
Publishing date	2023-07-17
Publishing country	United States
Document type	Journal Article
ZDB-ID	241615-3
ISSN	1750-3841 ; 0022-1147
ISSN (online)	1750-3841
ISSN	0022-1147
DOI	10.1111/1750-3841.16701
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Article ; Online: The influence of hydrogen bonding on the structure of organic-inorganic hybrid catalysts and its application in the solvent-free epoxidation of α-olefins.

Ju, Hong-Bin / Zhang, Li-Zhi / Li, De-Bao / Geng, Tao / Jiang, Ya-Jie / Wang, Ya-Kui

RSC advances

2024 Volume 14, Issue 18, Page(s) 12853–12863

Abstract: In this study, two types of catalysts were prepared by the combination of gemini quaternary ammonium salt with two distinct species of phosphotungstic acid. Catalysts prepared by the Wells-Dawson type of phosphotungstic acid and Keggin-type ... ...

Abstract	In this study, two types of catalysts were prepared by the combination of gemini quaternary ammonium salt with two distinct species of phosphotungstic acid. Catalysts prepared by the Wells-Dawson type of phosphotungstic acid and Keggin-type phosphotungstic acid both exhibited dual-phase catalytic behavior, demonstrating both heterogeneous and homogeneous catalytic activities. In comparison to the catalyst prepared by the Keggin-type phosphotungstic acid, due to the higher size of Wells-Dawson type of phosphotungstic acid, hydrogen bonding could not effectively affect the catalyst prepared by H
Language	English
Publishing date	2024-04-22
Publishing country	England
Document type	Journal Article
ISSN	2046-2069
ISSN (online)	2046-2069
DOI	10.1039/d4ra01399a
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Article: Syngas Conversion to C₂ Species over WC and M/WC (M = Cu or Rh) Catalysts: Identifying the Function of Surface Termination and Supported Metal Type

Zhao, Wantong / Guan, Zun / Li, Debao / Wang, Baojun / Fan, Maohong / Zhang, Riguang

ACS applied materials & interfaces. 2022 Apr. 25, v. 14, no. 17

2022

Abstract: Improving the selectivity and activity of C₂ species from syngas is still a challenge. In this work, catalysts with monolayer Cu or Rh supported over WC with different surface terminations (M/WC (M = Cu or Rh)) are rationally designed to facilitate C₂ ... ...

Abstract	Improving the selectivity and activity of C₂ species from syngas is still a challenge. In this work, catalysts with monolayer Cu or Rh supported over WC with different surface terminations (M/WC (M = Cu or Rh)) are rationally designed to facilitate C₂ species generation. The complete reaction network is analyzed by DFT calculations. Microkinetics modeling is utilized to consider the experimental reaction temperature, pressure, and the coverage of the species. The thermal stabilities of the M/WC (M = Cu or Rh) catalysts are confirmed by AIMD simulations. The results show that the surface termination and supported metal types in the M/WC (M = Cu or Rh) catalysts can alter the existence form of abundant CHₓ (x = 1–3) monomer, as well as the activity and selectivity of CHₓ monomer and C₂ species. Among these, only the Cu/WC–C catalyst is screened out to achieve outstanding activity and selectivity for C₂H₂ generation, attributing to that the synergistic effect of the subsurface C atoms and the surface monolayer Cu atoms presents the noble-metal-like character to promote the generation of CHₓ and C₂ species. This work demonstrates a new possibility for rational construction of other catalysts with the non-noble metal supported by the metal carbide, adjusting the surface termination of metal carbide and the supported metal types can present the noble-metal-like character to tune catalytic performance of C₂ species from syngas.
Keywords	catalysts ; catalytic activity ; synergism ; synthesis gas ; temperature
Language	English
Dates of publication	2022-0425
Size	p. 19491-19504.
Publishing place	American Chemical Society
Document type	Article
ISSN	1944-8252
DOI	10.1021/acsami.2c02217
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Article: Effect of Doped Metals Rh, Pd, and Cu over the IrO₂(110) Surface: Improving C₂ Selectivity during Oxidative Coupling of Methane

Sun, Na / Zhang, Jiayu / Ling, Lixia / Zhang, Riguang / Li, Debao / Wang, Baojun

Journal of physical chemistry. 2022 Feb. 23, v. 126, no. 9

2022

Abstract: Oxidative coupling of methane (OCM) is a core chemical process in which methane is directly produced to high-value-added products (ethane and ethylene). The density functional theory (DFT) method was used to study the OCM reaction on IrO₂(110) and M/IrO₂( ...

Abstract	Oxidative coupling of methane (OCM) is a core chemical process in which methane is directly produced to high-value-added products (ethane and ethylene). The density functional theory (DFT) method was used to study the OCM reaction on IrO₂(110) and M/IrO₂(110) (M = Rh, Pd, and Cu) surfaces to explore catalysts with high activity and C₂ hydrocarbon selectivity. A pure IrO₂(110) surface exhibits high activity, but the C₂ selectivity is low because O₂ is easily adsorbed and dissociated to form Oₐd, which will lead to the formation of the byproduct CO. Therefore, the catalytic performance of IrO₂(110) surfaces doped with second metals (Rh, Pd, and Cu) was investigated. The results show that the doping of Cu and Pd is detrimental to the adsorption and dissociation of O₂ and inhibits the formation of Oₐd. However, Rh doping has no obvious effect. Additionally, charge analysis shows that the doping of metals reduces the transfer of charge from the catalyst surface to the adsorbed O₂ compared to the pure IrO₂(110), which results in the relatively weak adsorption and high dissociation energy of O₂. Moreover, the analysis of reaction rate constants also shows that the dissociation rate of O₂ on Cu/IrO₂(110) at the same temperature is much lower than that on IrO₂(110), Rh/IrO₂(110), and Pd/IrO₂(110) surfaces. It can be seen that the doping of Cu can improve the C₂ hydrocarbon selectivity of the IrO₂ catalyst.
Keywords	adsorption ; byproducts ; catalysts ; catalytic activity ; density functional theory ; dissociation ; energy ; ethane ; ethylene ; methane ; temperature
Language	English
Dates of publication	2022-0223
Size	p. 4306-4318.
Publishing place	American Chemical Society
Document type	Article
ISSN	1932-7455
DOI	10.1021/acs.jpcc.1c04670
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Article ; Online: Response of Soil Organic Carbon Stock to Bryophyte Removal Is Regulated by Forest Types in Southwest China

Chen, Deyun / Cai, Mutian / Li, Debao / Yang, Shiming / Wu, Jianping

Forests. 2022 Dec. 11, v. 13, no. 12

2022

Abstract: Bryophytes play an important role in biogeochemical cycles and functions in forest ecosystems. Global climate changes have led to the population decline of bryophytes; however, the effects of bryophyte loss on the soil organic carbon stock and microbial ... ...

Abstract	Bryophytes play an important role in biogeochemical cycles and functions in forest ecosystems. Global climate changes have led to the population decline of bryophytes; however, the effects of bryophyte loss on the soil organic carbon stock and microbial dynamic remain poorly understood. Here, bryophytes were artificially removed to simulate the loss of bryophytes in two forests in Southwest China, i.e., evergreen broad-leaved forest and temperate coniferous forest. Soil physicochemical properties, microorganisms, and soil organic carbon stocks were analyzed and factors regulating soil organic carbon stocks were explored. Results showed that bryophyte removal significantly decreased soil organic carbon in the coniferous forest but had a negligible effect on the evergreen broad-leaved forest. Bryophyte removal had an insignificant effect on soil properties and microbial PLFAs except that soil nitrogen significantly increased in the 0–10 cm layer in the evergreen broad-leaved forest, while soil temperature and bulk density increased in the coniferous forest in the 0–10 and 10–20 soil layers, respectively. Soil organic carbon stocks increased by 14.06% in the evergreen forest and decreased by 14.39% in the coniferous forest. In the evergreen forest, most soil properties and microorganisms contributed to the change of soil organic carbon stocks, however, only soil organic carbon and depth had significant effects in the coniferous forest. Our findings suggest that soil physiochemical properties and microorganisms regulated the different responses of soil organic carbon stocks after bryophyte removal in the two forests. More research is needed to better understand the effects of understory plants on soil organic carbon stocks in various forest ecosystems.
Keywords	Bryophyta ; bulk density ; carbon sinks ; climate ; coniferous forests ; deciduous forests ; evergreen forests ; nitrogen ; phospholipid fatty acids ; population dynamics ; soil organic carbon ; soil temperature ; understory ; China
Language	English
Dates of publication	2022-1211
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2527081-3
ISSN	1999-4907
ISSN	1999-4907
DOI	10.3390/f13122125
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