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Wen X, Wu D, Chen D, Xu P, Zhao T, Chen S, Zhu Z, Zhong H, Chen P. Soil organic matter and total nitrogen as key driving factors promoting the assessment of acid-base buffering characteristics in a tea (Camellia sinensis) plantation habitat. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:596. [PMID: 38839676 DOI: 10.1007/s10661-024-12770-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/25/2024] [Indexed: 06/07/2024]
Abstract
The issue of soil acidification in tea plantations has become a critical concern due to its potential impact on tea quality and plant health. Understanding the factors contributing to soil acidification is essential for implementing effective soil management strategies in tea-growing regions. In this study, a field study was conducted to investigate the effects of tea plantations on soil acidification and the associated acid-base buffering capacity (pHBC). We assessed acidification, pHBC, nutrient concentrations, and cation contents in the top 0-20 cm layer of soil across forty tea gardens of varying stand ages (0-5, 5-10, 10-20, and 20-40 years old) in Anji County, Zhejiang Province, China. The results revealed evident soil acidification due to tea plantation activities, with the lowest soil pH observed in tea gardens aged 10-20 and 20-40 years. Higher levels of soil organic matter (SOM), total nitrogen (TN), Olsen phosphorus (Olsen-P), available iron (Fe), and exchangeable hydrogen (H+) were notably recorded in 10-20 and 20-40 years old tea garden soils, suggesting an increased risk of soil acidification with prolonged tea cultivation. Furthermore, prolonged tea cultivation correlated with increased pHBC, which amplified with tea stand ages. The investigation of the relationship between soil pHBC and various parameters highlighted significant influences from soil pH, SOM, cation exchange capacity, TN, available potassium, Olsen-P, exchangeable acids (including H+ and aluminum), available Fe, and available zinc. Consequently, these findings underscore a substantial risk of soil acidification in tea gardens within the monitored region, with SOM and TN content being key driving factors influencing pHBC.
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Affiliation(s)
- Xin Wen
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, Zhejiang, China
- Zhejiang Ecological Civilization Academy, Anji, 313300, Zhejiang, China
| | - Donglei Wu
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, Zhejiang, China.
- Zhejiang Ecological Civilization Academy, Anji, 313300, Zhejiang, China.
| | - Dingjiang Chen
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, Zhejiang, China
- Zhejiang Ecological Civilization Academy, Anji, 313300, Zhejiang, China
| | - Peiran Xu
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, 432000, Hubei, China
| | - Tiantian Zhao
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, 432000, Hubei, China
| | - Siyu Chen
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, 432000, Hubei, China
| | - Zhenhao Zhu
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, 432000, Hubei, China
| | - Hang Zhong
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, 432000, Hubei, China
| | - Pan Chen
- Hubei Key Laboratory of Quality Control of Characteristic Fruits and Vegetables, Hubei Engineering University, Xiaogan, 432000, Hubei, China
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Yang D, Wang L. Molybdenum-mediated nitrogen accumulation and assimilation in legumes stepwise boosted by the coexistence of arbuscular mycorrhizal fungi and earthworms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:171840. [PMID: 38522544 DOI: 10.1016/j.scitotenv.2024.171840] [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: 12/14/2023] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 03/26/2024]
Abstract
Molybdenum (Mo) is a critical micronutrient for nitrogen (N) metabolism in legumes, yet the impact of Mo on legume N metabolism in the context of natural coexistence with soil microorganisms remains poorly understood. This study investigated the dose-dependent effect of Mo on soil N biogeochemical cycling, N accumulation, and assimilation in alfalfa under conditions simulating the coexistence of arbuscular mycorrhizal fungi (AMF) and earthworms. The findings indicated that Mo exerted a hormetic effect on alfalfa N accumulation, facilitating it at low concentrations (below 29.98 mg/kg) and inhibiting it at higher levels. This inhibition was attributed to Mo-induced constraints on C supply for nitrogen fixation. Concurrently, AMF colonization enhanced C assimilation in Mo-treated alfalfas by promoting nutrients uptake, particularly Mg, which is crucial for chlorophyll synthesis. This effect was further amplified by earthworms, which improved AMF colonization (p < 0.05). In the soil N cycle, these organisms exerted opposing effects: AMF enhanced soil nitrification and earthworms reduced soil nitrate (NO3--N) reduction to jointly increase soil phyto-available N content (p < 0.05). Their combined action improved alfalfa N assimilation by restoring the protein synthesis pathway that is compromised by high Mo concentrations, specifically the activity of glutamine synthetase. These findings underscored the potential for soil microorganisms to mitigate N metabolic stress in legumes exposed to elevated Mo levels.
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Affiliation(s)
- Dongguang Yang
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Li Wang
- State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
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Li Q, Huang K, Liu Z, Qin X, Liu Y, Tan Q, Hu C, Sun X. Nano molybdenum trioxide-mediated enhancement of soybean yield through improvement of rhizosphere soil molybdenum bioavailability for nitrogen-fixing microbial recruitment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 937:173304. [PMID: 38777061 DOI: 10.1016/j.scitotenv.2024.173304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/14/2024] [Accepted: 05/15/2024] [Indexed: 05/25/2024]
Abstract
Molybdenum (Mo) plays a pivotal role in the growth and nitrogen-fixing process of plants mediated by rhizobia. However, the influence of nano‑molybdenum trioxide (MoO3NPs) on soybean growth, rhizosphere bioavailable Mo, and nitrogen-fixing microorganisms remains underexplored. Here, we report that compared with that of ionic Mo and bulk MoO3, the utilization of MoO3NPs (specifically NPs0.05 and NPs0.15) significantly boosted the available Mo content in the rhizosphere soil throughout the seedling (by 21.64 %-101.38 %), podding (by 54.44 %-68.89 %), and mature stage (by 34.41 %-to 45.71 %) of soybean growth. Furthermore, both NPs0.05 and NPs0.15 treatments maintained consistently higher levels of acid-extractable Mo, reducible Mo, and oxidizable Mo across these stages, which facilitated stable conversion and supply of bioavailable Mo. Within the rhizosphere soil, NPs0.05 and NPs0.15 treatments resulted in the highest relative abundance of Rhizobiales and Bradyrhizobium genera, and significantly promoted the colonization of nitrogen-fixing microorganisms, thereby increasing the content of nitrate nitrogen (NO3--N) by 8.69 % and 7.72 % and ammonium nitrogen (NH4+-N) by 44.75 % and 17.55 %, respectively. Ultimately, these effects together contributed to 107.17 % and 84.00 % increment in soybean yield by NPs0.05 and NPs0.15 treatments, respectively. In summary, our findings underscore the potential of employing MoO3NPs to promote plant growth and maintain soil nitrogen cycling, indicating distinct advantages of MoO3NPs over ionic Mo and bulk MoO3.
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Affiliation(s)
- Qibiao Li
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Kan Huang
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Zhichen Liu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Xiaoming Qin
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Yining Liu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Qiling Tan
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Chengxiao Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Xuecheng Sun
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture, Micro-elements Research Center, College of Resources & Environment, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan 430070, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518000, China.
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Imran M, Sun X, Hussain S, Ali U, Rana MS, Rasul F, Saleem MH, Moussa MG, Bhantana P, Afzal J, Elyamine AM, Hu CX. Molybdenum-Induced Effects on Nitrogen Metabolism Enzymes and Elemental Profile of Winter Wheat ( Triticum aestivum L.) Under Different Nitrogen Sources. Int J Mol Sci 2019; 20:ijms20123009. [PMID: 31226753 PMCID: PMC6627063 DOI: 10.3390/ijms20123009] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 05/30/2019] [Accepted: 06/01/2019] [Indexed: 12/14/2022] Open
Abstract
Different nitrogen (N) sources have been reported to significantly affect the activities and expressions of N metabolism enzymes and mineral elements concentrations in crop plants. However, molybdenum-induced effects in winter wheat cultivars have still not been investigated under different N sources. Here, a hydroponic study was carried out to investigate these effects on two winter wheat cultivars (‘97003’ and ‘97014’) as Mo-efficient and Mo-inefficient, respectively, under different N sources (NO3−, NH4NO3, and NH4+). The results revealed that the activities of nitrate reductase (NR) and nitrite reductase (NiR) followed the order of NH4NO3 > NO3− > NH4+ sources, while glutamine synthetase (GS) and glutamate synthase (GOGAT) followed the order of NH4+ > NH4NO3 > NO3− in both the wheat cultivars. However, Mo-induced effects in the activities and expressions of N metabolism enzymes under different N sources followed the order of NH4NO3 > NO3− > NH4+ sources, indicating that Mo has more complementary effects towards nitrate nutrition than the sole ammonium source in winter wheat. Interestingly, under −Mo-deprived conditions, cultivar ‘97003’ recorded more pronounced alterations in Mo-dependent parameters than ‘97014’ cultivar. Moreover, Mo application increased the proteins, amino acids, ammonium, and nitrite contents while concomitantly decreasing the nitrate contents in the same order of NH4NO3 > NO3− > NH4+ sources that coincides with the Mo-induced N enzymes activities and expressions. The findings of the present study indicated that Mo plays a key role in regulating the N metabolism enzymes and assimilatory products under all the three N sources; however, the extent of complementation exists in the order of NH4NO3 > NO3− > NH4+ sources in winter wheat. In addition, it was revealed that mineral elements profiles were mainly affected by different N sources, while Mo application generally had no significant effects on the mineral elements contents in the winter wheat leaves under different N sources.
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Affiliation(s)
- Muhammad Imran
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Xuecheng Sun
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Saddam Hussain
- Department of Agronomy, University of Agriculture Faisalabad, 38040 Punjab, Pakistan.
| | - Usman Ali
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Muhammad Shoaib Rana
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Fahd Rasul
- Department of Agronomy, University of Agriculture Faisalabad, 38040 Punjab, Pakistan.
| | - Muhammad Hamzah Saleem
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, China.
| | - Mohamed G Moussa
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
- Soil and Water Research Department, Nuclear Research Center, Egyptian Atomic Energy Authority, Abou Zaabl 13759, Egypt.
| | - Parashuram Bhantana
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Javaria Afzal
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ali Mohamed Elyamine
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
- Faculty of Science and Technology, Department of Life Science, University of Comoros, Moroni 269, Comoros.
| | - Cheng Xiao Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan 430070, China.
- Microelement Research Center, Huazhong Agricultural University, Wuhan 430070, China.
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