Article
Environmental Sciences
Quan Li, Jianhua Lv, Changhui Peng, Wenhua Xiang, Wenfa Xiao, Xinzhang Song
Summary: The study shows that increasing N deposition can reduce plant internal cycling while enhancing ecosystem-scale cycling of P in Moso bamboo forests, leading to a shift in P use strategy from a 'conservative consumption' strategy to a 'resource spending' strategy.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
Yang Tian, Jun Wang, Lang Zhou, Libin Tao, Yongbiao Lin, Dafeng Hui, Hai Ren, Hongfang Lu
Summary: This study conducted a field experiment to investigate the effects of over-canopy and understory nitrogen addition on nitrogen budgets in a lower subtropical monsoon evergreen broadleaved forest. The results showed that the forest was not saturated with nitrogen after receiving additional nitrogen for 6 years. Plants were able to absorb the added nitrogen by increasing the nitrogen concentrations in their organs. The study also highlighted that understory nitrogen addition may underestimate the effects of nitrogen deposition in forests.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Piaopiao Ke, Ronghua Kang, Loreena K. Avery, Jiawei Zhang, Qian Yu, Danni Xie, Lei Duan
Summary: Soils in subtropical forests in South China were found to have significant emissions of NO, which could be attributed to high nitrogen deposition. Soil temperature and water filled pore spaces were important factors regulating NO emissions, along with ambient NO concentration and rainfall. Additionally, differences in mineral nitrogen and soil moisture conditions between sites influenced the NO emissions characteristics.
ENVIRONMENTAL POLLUTION
(2022)
Article
Geosciences, Multidisciplinary
Jianhua Lv, Quan Li, Junbo Zhang, Yongfu Li, Changhui Peng, Xinzhang Song
Summary: This study investigated the effects of nitrogen addition at different soil depths on CO2, CH4, and N2O concentrations in a subtropical Moso bamboo forest. The results showed that nitrogen addition significantly increased the concentrations of these greenhouse gases, with stronger responses observed in the topsoil.
Article
Agronomy
Quan Li, Qiuhui Ma, Jinpei Gao, Junbo Zhang, Yongfu Li, Man Shi, Changhui Peng, Xinzhang Song
Summary: This study found that remaining stumps significantly enhanced soil CO2 emissions in a Moso bamboo plantation and that nitrogen addition can promote soil respiration. In order to better understand future forest CO2 emissions, soil CO2 emissions in plantation ecosystems with remaining stumps and their response to increasing atmospheric nitrogen inputs need to be considered.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Soil Science
Jing Zhu, Anne Jansen-Willems, Christoph Mueller, Peter Dorsch
Summary: The topography of forested catchments plays a significant role in controlling nitrogen cycling, impacting N retention and dissipation in forest ecosystems.
SOIL BIOLOGY & BIOCHEMISTRY
(2021)
Article
Environmental Sciences
Jianqing Wang, Xiuzhen Shi, Chengyang Zheng, Helen Suter, Zhiqun Huang
Summary: China has experienced a widespread increase in N deposition due to intensive anthropogenic activities, particularly in subtropical regions. The effects of long-term N deposition on soil bacterial and fungal abundance, diversity, and community composition show that fungi are more sensitive to N deposition, and soil N availability and pH are the most influential factors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Soil Science
Xinyi Yang, Pengpeng Duan, Kelin Wang, Dejun Li
Summary: Soil nitrogen transformations play important roles in regulating soil N availability and have significant effects on ecosystem productivity and other functions of terrestrial ecosystems. This study investigated the effects of elevated atmospheric N deposition on soil N transformations and found that these effects may be mediated by topography.
Article
Environmental Sciences
Danni Miao, Xingyi Peng, Qiumei Teng, Muhammad Fahad Sardar, Qianqian Zhang, Xiangtao Zhu, Yongchun Li
Summary: This study examined the contributions of bacterial and fungal communities to soil nitrogen mineralization during plant invasion. The results showed that the bacterial community played a leading role in soil net ammonification during bamboo invasion.
JOURNAL OF SOILS AND SEDIMENTS
(2023)
Article
Environmental Sciences
Marie Spohn, Johan Stendahl
Summary: The aim of this study was to identify the parameters that affect the nitrogen isotope ratio (δN-15) in temperate and boreal forest soils. Two types of δN-15 patterns were identified: type D soils showed a decreasing δN-15 in the mineral soil with depth, while type C soils showed a constant δN-15 throughout the soil profile. Type D soils had higher δN-15 in the organic layer and upper mineral soil, lower atmospheric N deposition, and higher phosphorus concentration than type C soils. The δN-15 of the organic layer was positively correlated with latitude and negatively correlated with mean annual temperature and atmospheric N deposition across Europe.
Article
Agronomy
Jianqing Wang, Xiuzhen Shi, Chengyang Zheng, Manuel Esteban Lucas-Borja
Summary: This study investigates the impacts of nitrogen deposition on soil denitrification and its underlying mechanisms in a subtropical forest. The results show that high levels of nitrogen deposition significantly decrease denitrifying activity and affect the composition and complexity of denitrifying bacteria communities.
Article
Environmental Sciences
Liehua Tie, Shengzhao Wei, Josep Penuelas, Jordi Sardans, Xing Liu, Shixing Zhou, Xiong Liu, Arun K. Bose, Congde Huang
Summary: Imbalanced nitrogen and phosphorus depositions significantly alter terrestrial ecosystem biogeochemical processes. The addition of nitrogen and phosphorus together can enhance the release of carbon, nitrogen, and metal nutrients in litter, while the effect of nitrogen addition on litter depends on the availability of phosphorus.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Forestry
Yu-lin Zhu, Xue-ping Lin, Yun-peng Huang, Xing-hao Tang, Xiong Fang, Zhi-gang Yi
Summary: Nitrogen deposition increases soil respiration and carbon content, while severe drought decreases both. In a young subtropical forest, future frequent droughts may offset the promoting effects of nitrogen deposition on soil respiration and carbon sequestration.
Article
Environmental Sciences
Li-wen Zheng, Wei-dong Zhai
Summary: Through analysis of survey datasets, it was found that the Bohai and Yellow seas exhibit variations in marine and non-marine nitrogen, as well as N* levels. The study emphasizes the impact of atmospheric nitrogen deposition, current inputs, and riverine inputs on coastal eutrophication.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Xiao Zhu, Jianlin Shen, Yong Li, Xuejun Liu, Wen Xu, Feng Zhou, Juan Wang, Stefan Reis, Jinshui Wu
Summary: The study conducted in the Jinjing River Catchment in subtropical central China revealed it as a net source of atmospheric Nrs, with NH3 and NOx being the main emission substances and livestock excretion, fertilization, and vehicles being the main emission sources.
ENVIRONMENTAL POLLUTION
(2021)
Article
Biochemistry & Molecular Biology
Fang He, Qian Zhao, Yu-Jie Shi, Jun-Lin Li, Ting Wang, Tian-Tian Lin, Kuang-Ji Zhao, Liang-Hua Chen, Jia-Xuan Mi, Han-Bo Yang, Fan Zhang, Xue-Qin Wan
Summary: Cross adaptation refers to the plants' ability to enhance resistance to other stress after experiencing one type of stress. In this study, the impact of UVB pretreatment on Cd enrichment, transport, and tolerance in plants was investigated. The results showed that UVB pretreatment affected the expression of Cd-related genes and increased Cd accumulation in plant organs. Moreover, it further increased the toxicity of Cd to plants, leading to decreased photosynthesis and leaf chlorosis. Overall, UVB treatment improved the Cd accumulation ability and has potential applications in phytoremediation of heavy metals.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Plant Sciences
Tiantian Lin, Qi Lu, Zhenlei Zheng, Shuying Li, Shujiang Li, Yinggao Liu, Tianhui Zhu, Lianghua Chen, Chunlin Yang, Shan Han
Summary: Soil cadmium stress affects the phyllosphere microbe community in different ways between male and female poplar plants, resulting in increased resistance to pathogens in males. The composition and diversity of phyllosphere microorganisms, which play a crucial role in protecting plants from diseases, are strongly influenced by heavy metal contaminants. In this study, male and female poplar plants were exposed to excess soil cadmium to investigate whether there are differences in their phyllosphere microbiome structures and resistance to a leaf pathogenic fungus. It was found that male plants exhibited better resistance to the pathogenic fungus after cadmium exposure, and this could be attributed to both direct cadmium toxicity and changes in the phyllosphere microbiome.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Multidisciplinary Sciences
Fang Wang, Shuaiying Zhang, Peng Zhu, Lianghua Chen, Yuanwei Zhu, Changdong Yang, Rendong Liu, Fengqing Li, Xiong Huang, Hanbo Yang
Summary: This study investigated variation and stability in strobili production, phenology, synchronization, and seed production in two generation clonal seed orchards of Chinese fir. The research found significant variations in gamete contribution among clones and low synchronization between female receptivity and pollen shedding. The number of female strobili and POij (as female) significantly influenced seed production.
SCIENTIFIC REPORTS
(2023)
Article
Plant Sciences
Yu-Jie Shi, Meng-Xue Niu, Cong-Hua Feng, Jun-Lin Li, Tian-Tian Lin, Ting Wang, Kuang-Ji Zhao, Gui-Rong Hou, Liang-Hua Chen, Fang He
Summary: In this study, a gene called PtrAREB3 was identified in Populus trees, which is responsive to abscisic acid and cadmium treatments. PtrAREB3 acts as a regulator of target genes associated with stress response and improves cadmium tolerance of the trees. Overexpression of PtrAREB3 also increases cadmium accumulation in plants, making it a potential genetic target for improving the performance of Populus trees in metal contaminated areas.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Agricultural Engineering
Tiantian Lin, Zhengqin Wu, Yujie Shi, Peng Yang, Ting Wang, Xinglei Cui, Guirong Hou, Gang Chen, Jiulong Xie, Guoxing Cao, Lianghua Chen, Fang He
Summary: Dioecious plant species show sexual dimorphism in response to water deficit, with male poplars exhibiting better growth and higher chlorophyll content compared to females. Metabolome analysis revealed higher levels of differentially expressed metabolites in males. Transcriptome analysis indicated enrichment in plant hormone signal transduction and carotenoid biosynthesis pathways in both sexes. Additionally, plant sex had a smaller impact on differentially expressed genes (DEGs) compared to drought treatment, with most DEGs up-regulated in male poplars, particularly those involved in ABA synthesis.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Biochemistry & Molecular Biology
Xiaolu Wu, Lulu Chen, Xinyi Lin, Xiaoxi Chen, Chengyu Han, Feifei Tian, Xueqin Wan, Qinglin Liu, Fang He, Lianghua Chen, Yu Zhong, Hanbo Yang, Fan Zhang
Summary: WRKY transcription factors play important roles in regulating plant growth and responses to environmental stress. This study investigated the molecular mechanism of PyWRKY48 in response to cadmium (Cd) stress and its effect on Cd tolerance and accumulation in transgenic poplars. The results provide insights into phytoremediation of Cd-contaminated soil.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Plant Sciences
Chengming You, Jihong Li, Kaijun Yang, Bo Tan, Rui Yin, Han Li, Li Zhang, Xinglei Cui, Sining Liu, Lixia Wang, Yang Liu, Lianghua Chen, Yaling Yuan, Jiao Li, Jordi Sardans, Jian Zhang, Zhenfeng Xu, Josep Penuelas
Summary: The variations and patterns of root carbon and nitrogen stoichiometry in the first five root orders across different woody plant species were explored. The results showed that nitrogen concentrations in the root were higher in deciduous, broadleaf, and arbuscular mycorrhizal species compared to evergreen, coniferous, and ectomycorrhizal association species, respectively. The root carbon and nitrogen stoichiometry exhibited clear latitudinal and altitudinal trends, mainly influenced by plant species and climatic factors. These findings contribute to a better understanding and prediction of the impacts of climate change on carbon and nutrient dynamics in terrestrial ecosystems.
Article
Plant Sciences
Tiantian Lin, Jiayao Tang, Shuying Li, Shujiang Li, Shan Han, Yinggao Liu, Chunlin Yang, Gang Chen, Lianghua Chen, Tianhui Zhu
Summary: Phyllosphere-associated microbes in dioecious poplar species are influenced by drought stress, leading to sex-specific differences in phyllosphere microbiome and associated pathogen resistance. Male plants in drought-stressed conditions have a better growth performance and lower susceptibility to pathogen infection compared to females. The differences in pathogen resistance between sexes are attributed to shifts in the structure and function of the phyllosphere-associated microbiome.
Article
Environmental Sciences
Renping Wan, Deyi Luo, Jianyi Liu, Yan Zhang, Yongqi Xiang, Wang Yan, Yujie Xie, Jiaxuan Mi, Fan Zhang, Xueqin Wan, Lianghua Chen, Jian Zhang, Xingyan Huang, Yu Zhong
Summary: This study aimed to reveal the effects of Pennisetum sinese (PS) and natural vegetation (NV) on soil quality and explore the feasibility of introducing PS for vegetation restoration in the dry-hot valley region. The results showed that PS significantly improved soil properties and maintained stable soil quality, indicating that vegetation restoration has a positive impact on soil properties and quality.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Forestry
Yu-Jie Shi, Jia-Xuan Mi, Jin-Liang Huang, Fang He, Liang-Hua Chen, Xue-Qin Wan
Summary: Through extensive investigation of Populus on the Plateau and its surrounding areas, two taxa (Populus kangdingensis and Populus schneideri var. tibetica) with similar morphology and habitat were found. They were identified as hybrid progenies of P. xiangchengensis and P. simonii. This study provides a novel and comprehensive method for the phylogeny of Populus and lays a foundation for the development and utilization of poplar resources.
Article
Forestry
Jinjin Li, Yumei Huang, Lianghua Chen, Shun Gao, Jian Zhang, Danju Zhang
Summary: Allelopathy in Eucalyptus plantations affects understory diversity, mainly through phenolic allelochemicals. However, the changes in phenolic allelochemicals and their relationship with understory diversity with plantation age are unclear. This study assessed understory plant diversity and identified phenolic compounds in leaf litter, roots, and rhizosphere soil samples from a Eucalyptus grandis plantation over ten years. Phenolic compounds were analyzed using UPLC-MS/MS. Understory plant species richness and diversity were lowest in 4-year-old plantations and increased significantly with age. Several phenolic acids and flavonoids were identified in the samples. Most potential phenolic allelochemicals were more abundant in younger plantations, especially at 4 years old. The concentrations of phenolic compounds in the rhizosphere did not change significantly with age and were lower than in litter and root samples. Phenolic compounds explained more of the variation in understory plants than soil factors. Hydroxyphenyllactic acid, ellagic acid, quercetin, salicylic acid, and 4-hydroxybenzoic acid were the main phenolic compounds associated with changes in plant diversity with plantation age.
JOURNAL OF FORESTRY RESEARCH
(2023)
Article
Plant Sciences
Xin Zheng, Cailan Xing, Zhenzhen Zhu, Xueqin Wan, Fan Zhang, Hanbo Yang, Fang He, Chengming You, Lianghua Chen
Summary: Light has crucial impacts on plant-plant interactions and plant communities. This study investigated how males and females of Populus yunnanensis respond to sexual competition under different light conditions. The results showed that males have a competitive advantage over females under sufficient light conditions, while there were no significant sex-specific differences under shade treatment. The performance of plants in terms of morphology and physiology is strongly affected by patterns of sexual competition and light regimes.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2023)
Article
Ecology
Yu Zhou, Moyu Sha, HuiQin Jin, Lifeng Wang, Jian Zhang, Zhenfeng Xu, Bo Tan, Lianghua Chen, Lixia Wang, Sining Liu, Jiujin Xiao, Chengming You, Yumei Huang, Yamei Chen, Yang Liu
Summary: Global warming leads to shrubs expansion, but the effects of shrubs expansion on nutrient cycling, decomposer diversity, and activity in alpine meadows are unclear. Two dominant shrub species, Rhododendron lapponicum (evergreen shrubs) and Sorbus rufopilosa (deciduous shrubs), were selected in the eastern Tibetan Plateau. The study found that the soil total nitrogen, microbial biomass carbon and nitrogen, and some extracellular enzyme activity of the two shrubs were higher than those in the control site. Deciduous shrub expansion had a stronger effect on meadows ecosystem process than evergreen shrub expansion. However, both shrubs may alleviate nitrogen and phosphorus limitation in alpine meadows ecosystem, and the expansion of evergreen shrubs may contribute to the accumulation of particulate organic matter.
EUROPEAN JOURNAL OF SOIL BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Hanbo Yang, Fang Wang, Wenna An, Yunjie Gu, Yongze Jiang, Hongying Guo, Minhao Liu, Jian Peng, Bo Jiang, Xueqin Wan, Lianghua Chen, Xiong Huang, Fang He, Peng Zhu
Summary: Nanmu wood, known for its unique fragrance and high quality, contains various volatile metabolites, with terpenes and aromatic hydrocarbons being the main components. In this study, non-targeted metabolomic analysis revealed 53 volatile metabolites belonging to 11 classes in different tissues of nanmu wood, and three specific metabolites were identified to contribute significantly to the characteristic fragrance of the heartwood. The expression of transcripts in the terpenoid biosynthesis pathway was found to be up-regulated in the sapwood, suggesting that fragrance-related metabolites were synthesized in the sapwood and then deposited in the heartwood during the transformation process. These findings provide a foundation for further understanding the formation mechanism of fragrance components in nanmu wood and offer insights for the development and utilization of nanmu wood.
Article
Forestry
Xue Wang, Linting Hao, Jiaxuan Mi, Man Yin, Cailan Xing, Xueqin Wan, Fan Zhang, Hanbo Yang, Fang He, Hongling Hu, Lianghua Chen
Summary: Both nitrogen deposition and heavy metal pollution are significant environmental concerns. This study investigated the effects of nitrogen deposition on poplars under heavy metal pollution. The results showed that nitrogen addition promoted the growth of poplars under all heavy metal pollution conditions, but the effects varied depending on the dosage of nitrogen and the type of heavy metal. In addition, nitrogen deposition may exacerbate the stress caused by combined heavy metal pollution.