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Barbosa GM, Calixto R, Nakazato RK, Tavares AR, Domingos M, Rinaldi MCS. Effects of heavy metals and high temperature on Atlantic Forest species: Analysis of their tolerance capacity. CHEMOSPHERE 2024; 361:142449. [PMID: 38801900 DOI: 10.1016/j.chemosphere.2024.142449] [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: 03/06/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 05/29/2024]
Abstract
Changes in temperature and the deposition of potential pollutants in the soil, such as heavy metals, may damage plant communities, altering their physiological processes. High temperature may also cause a series of morpho-anatomical, physiological and biochemical changes in plants. However, tolerant plant species tend to restrict these harmful effects. The present study investigates the impact of atmospheric warming on the accumulation capacity of heavy metals (Zn, Ni, Cu) in the roots and leaves of a pioneer species (Croton floribundus) and a non-pioneer species (Esenbeckia leiocarpa) native to the Atlantic Forest of southeastern Brazil. The experimental design involved exposing the plants to two soil treatments: without excess metals (-M) and with excess metals (+M), along with varying thermoperiods of 26 °C day/19 °C night and 32 °C day/20 °C night in growth chambers. Over a 28-day period, we assessed weekly metal content, translocation, growth parameters, a non-enzymatic antioxidant (glutathione) and indicators of cell damage or oxidative stress (chlorophylls a and b, total chlorophyll (a+b), carotenoids, malondialdehyde and conjugated diene hydroperoxide contents). Both species exhibited increased metal accumulation under excess metals, employing distinct translocation strategies. C. floribundus showed high translocation rates of Ni to leaves and E. leiocarpa immobilized Ni in the roots. Atmospheric warming reduced Cu and Ni translocation from roots to leaves in both species. C. floribundus displayed lower physiological damage compared to E. leiocarpa, demonstrating robust growth. We concluded that the pioneer species possessed greater tolerance to oxidative stress induced by temperature and metal-related environmental factors than the non-pioneer species, confirming our hypothesis. In addition, our finding provides valuable insights for conservation and management of ecosystems affected by climatic and pollutant changes.
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Affiliation(s)
- Geane Martins Barbosa
- Instituto de Pesquisas Ambientais, Caixa, Postal 68041, 04045-972, São Paulo, Brazil.
| | - Regina Calixto
- Instituto de Pesquisas Ambientais, Caixa, Postal 68041, 04045-972, São Paulo, Brazil
| | | | | | - Marisa Domingos
- Instituto de Pesquisas Ambientais, Caixa, Postal 68041, 04045-972, São Paulo, Brazil
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Yu H, Han M, Cai C, Lv F, Teng Y, Zou L, Ding G, Bai X, Yao J, Ni K, Zhu C. Soil organic carbon stability and exogenous nitrogen fertilizer influence the priming effect of paddy soil under long-term exposure to elevated atmospheric CO 2. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:102313-102322. [PMID: 37665443 DOI: 10.1007/s11356-023-29485-7] [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: 02/14/2023] [Accepted: 08/20/2023] [Indexed: 09/05/2023]
Abstract
Soil organic carbon (SOC) stability and dynamics are greatly influenced by long-term elevated atmospheric CO2 [CO2]. The priming effect (PE) is vital in SOC stability and dynamics, but its role in paddy soil under long-term elevated [CO2] remains unclear. To examine how SOC stability changed in paddy soil after long-term elevated atmospheric CO2 enrichment, the PE was quantified through a 13C-glucose-induced experiment with different N levels for topsoil (0-20 cm) from paddy free-air CO2 enrichment (FACE) platform. Compared with the ambient CO2 concentration ([CO2]), 10 years of elevated [CO2] (500 µmol·mol-1) significantly increased SOC and TN content by 18.4% and 19.0%, respectively, while the C/N ratio was not changed. The labile C fractions including dissolved organic carbon (DOC) and readily oxidizable organic carbon (ROC), but excluding microbial biomass C (MBC), accumulated faster than SOC in paddy soil, which implied the reduced SOC stability for long-term elevated [CO2] enrichment. With the decline of SOC stability, the exogenously induced cumulative specific PE (PE per gram of SOC) remarkably increased by 41.1-72.7% for elevated [CO2] fumigation. The cumulative PE, especially the cumulative specific PE, was found significantly linearly correlated with the ROC content or ROC/SOC ratio (labile SOC pool). Furthermore, the application of nitrogen fertilizer slowed down the PE under elevated [CO2] condition. Our results showed that long-term elevated [CO2] enrichment reduced SOC stability and, together with exogenous nitrogen fertilizer, regulated the PE in paddy soil.
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Affiliation(s)
- Hongyan Yu
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China.
| | - Mixue Han
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Chuang Cai
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Fu Lv
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yue Teng
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Luyi Zou
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Guoqing Ding
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xuejia Bai
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Junhou Yao
- School of Environmental and Civil Engineering, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Kang Ni
- Tea Research Institute, Chinese Academy of Agriculture Sciences, Hangzhou, 310008, China
| | - Chunwu Zhu
- Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
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Tang S, Cheng W, Hu R, Guigue J, Hattori S, Tawaraya K, Tokida T, Fukuoka M, Yoshimoto M, Sakai H, Usui Y, Xu X, Hasegawa T. Five-year soil warming changes soil C and N dynamics in a single rice paddy field in Japan. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 756:143845. [PMID: 33277011 DOI: 10.1016/j.scitotenv.2020.143845] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 11/04/2020] [Accepted: 11/07/2020] [Indexed: 06/12/2023]
Abstract
Soil temperature is an important determinant of carbon (C) and nitrogen (N) cycling in terrestrial ecosystems, but its effects on soil organic carbon (SOC) and total nitrogen (TN) dynamics as well as rice biomass in rice paddy ecosystems are not fully understood. We conducted a five-year soil warming experiment in a single-cropping paddy field in Japan. Soil temperatures were elevated by approximate 2 °C with heating wires during the rice growing season and by approximate 1 °C with nighttime thermal blankets during the fallow season. Soil samples were collected in autumn after rice harvest and in spring after fallow each year, and anaerobically incubated at 30 °C for four weeks to determine soil C decomposition and N mineralization potentials. The SOC and TN contents, rice biomass, dissolved organic carbon (DOC) and microbial biomass carbon (MBC) concentrations were measured in the study. Soil warming did not significantly enhance rice aboveground and root biomasses, but it significantly decreased SOC and TN contents and thus decreased soil C decomposition and N mineralization potentials due to depletion of available C and N. Moreover, soil warming significantly decreased DOC concentration but significantly increased MBC concentration. The ratios of C decomposition potential to N mineralization potential, decomposition potential to SOC, and N mineralization to TN were not affected by soil warming. There were significant seasonal and annual variations in SOC, C decomposition and N mineralization potentials, soil DOC and MBC under each temperature treatments. Our study implied that soil warming can decrease soil C and N stocks in paddy ecosystem probably via stimulating microbial activities and accelerating the depletion of DOC. This study further highlights the importance of long-term in situ observation of C and N dynamics and their availabilities in rice paddy ecosystems under increasing global warming scenarios.
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Affiliation(s)
- Shuirong Tang
- College of Tropical Crops, Hainan University, Haikou 570228, China; United Graduate School of Agricultural Sciences, Iwate University, 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan; Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Weiguo Cheng
- United Graduate School of Agricultural Sciences, Iwate University, 3-18-8 Ueda, Morioka, Iwate 020-8550, Japan; Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata 997-8555, Japan.
| | - Ronggui Hu
- Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of the Yangtze River), Ministry of Agriculture, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China.
| | - Julien Guigue
- Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata 997-8555, Japan; Chair of Soil Science, Technical University of Munich, Emil-Ramann-Strasse 2, 85354 Freising, Germany
| | - Satoshi Hattori
- Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata 997-8555, Japan
| | - Keitaro Tawaraya
- Faculty of Agriculture, Yamagata University, 1-23, Wakaba-machi, Tsuruoka, Yamagata 997-8555, Japan
| | - Takeshi Tokida
- Institute for Agro-Environmental Sciences, NARO, 3-1-3, Kannondai, Tsukuba, Ibaraki 305-8604, Japan
| | - Minehiko Fukuoka
- Institute for Agro-Environmental Sciences, NARO, 3-1-3, Kannondai, Tsukuba, Ibaraki 305-8604, Japan
| | - Mayumi Yoshimoto
- Institute for Agro-Environmental Sciences, NARO, 3-1-3, Kannondai, Tsukuba, Ibaraki 305-8604, Japan
| | - Hidemitsu Sakai
- Institute for Agro-Environmental Sciences, NARO, 3-1-3, Kannondai, Tsukuba, Ibaraki 305-8604, Japan
| | - Yasuhiro Usui
- Hokkaido Agricultural Research Center, NARO, Shinseiminami 9-4, Memuro, Kasai, Hokkaido 082-0081, Japan
| | - Xingkai Xu
- State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Toshihiro Hasegawa
- Tohoku Agricultural Research Center, NARO, 4 Akahira, Shimokuriyagawa, Morioka 020-0198, Japan
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