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Feng YX, Tian P, Li CZ, Hu XD, Lin YJ. Elucidating the intricacies of the H 2S signaling pathway in gasotransmitters: Highlighting the regulation of plant thiocyanate detoxification pathways. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 276:116307. [PMID: 38593497 DOI: 10.1016/j.ecoenv.2024.116307] [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: 12/31/2023] [Revised: 04/02/2024] [Accepted: 04/06/2024] [Indexed: 04/11/2024]
Abstract
In recent decades, there has been increasing interest in elucidating the role of sulfur-containing compounds in plant metabolism, particularly emphasizing their function as signaling molecules. Among these, thiocyanate (SCN-), a compound imbued with sulfur and nitrogen, has emerged as a significant environmental contaminant frequently detected in irrigation water. This compound is known for its potential to adversely impact plant growth and agricultural yield. Although adopting exogenous SCN- as a nitrogen source in plant cells has been the subject of thorough investigation, the fate of sulfur resulting from the assimilation of exogenous SCN- has not been fully explored. There is burgeoning curiosity in probing the fate of SCN- within plant systems, especially considering the possible generation of the gaseous signaling molecule, hydrogen sulfide (H2S) during the metabolism of SCN-. Notably, the endogenous synthesis of H2S occurs predominantly within chloroplasts, the cytosol, and mitochondria. In contrast, the production of H2S following the assimilation of exogenous SCN- is explicitly confined to chloroplasts and mitochondria. This phenomenon indicates complex interplay and communication among various subcellular organelles, influencing signal transduction and other vital physiological processes. This review, augmented by a small-scale experimental study, endeavors to provide insights into the functional characteristics of H2S signaling in plants subjected to SCN--stress. Furthermore, a comparative analysis of the occurrence and trajectory of endogenous H2S and H2S derived from SCN--assimilation within plant organisms was performed, providing a focused lens for a comprehensive examination of the multifaceted roles of H2S in rice plants. By delving into these dimensions, our objective is to enhance the understanding of the regulatory mechanisms employed by the gasotransmitter H2S in plant adaptations and responses to SCN--stress, yielding invaluable insights into strategies for plant resilience and adaptive capabilities.
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Affiliation(s)
- Yu-Xi Feng
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China; Jiangmen Laboratory of Carbon Science and Technology, Hong Kong University of Science and Technology (Guangzhou), Jiangmen, Guangdong 529199, People's Republic of China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin 541004, People's Republic of China.
| | - Peng Tian
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Cheng-Zhi Li
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Xiao-Dong Hu
- Jiangmen Laboratory of Carbon Science and Technology, Hong Kong University of Science and Technology (Guangzhou), Jiangmen, Guangdong 529199, People's Republic of China
| | - Yu-Juan Lin
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin 541004, People's Republic of China; The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control, Guilin 541004, People's Republic of China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541006, People's Republic of China.
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Baartman SL, Krol MC, Röckmann T, Hattori S, Kamezaki K, Yoshida N, Popa ME. A GC-IRMS method for measuring sulfur isotope ratios of carbonyl sulfide from small air samples. OPEN RESEARCH EUROPE 2022; 1:105. [PMID: 37767459 PMCID: PMC10521041 DOI: 10.12688/openreseurope.13875.2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/02/2022] [Indexed: 09/29/2023]
Abstract
A new system was developed for measuring sulfur isotopes δ 33S and δ 34S from atmospheric carbonyl sulfide (COS) on small air samples of several liters, using pre-concentration and gas chromatography - isotope ratio mass spectrometry (GC-IRMS). Measurements of COS isotopes provide a tool for quantifying the COS budget, which will help towards better understanding climate feedback mechanisms. For a 4 liter sample at ambient COS mixing ratio, ~500 parts per trillion (ppt), we obtain a reproducibility error of 2.1 ‰ for δ 33S and 0.4 ‰ for δ 34S. After applying corrections, the uncertainty for an individual ambient air sample measurement is 2.5 ‰ for δ 33S and 0.9 ‰ for δ 34S. The ability to measure small samples allows application to a global-scale sampling program with limited logistical effort. To illustrate the application of this newly developed system, we present a timeseries of ambient air measurements, during the fall and winter of 2020 and 2021 in Utrecht, the Netherlands. The observed background values were δ 33S = 1.0 ± 3.4 ‰ and δ 34S = 15.5 ± 0.8 ‰ (VCDT). The maximum observed COS mixing ratios was only 620 ppt. This, in combination with the relatively high δ 34S suggests that the Netherlands receives little COS-containing anthropogenic emissions. We observed a change in COS mixing ratio and δ 34S with different air mass origin, as modelled with HYSPLIT backward trajectory analyses. An increase of 40 ppt in mean COS mixing ratio was observed between fall and winter, which is consistent with the expected seasonal cycle in the Netherlands. Additionally, we present the results of samples from a highway tunnel to characterize vehicle COS emissions and isotopic composition. The vehicle emissions were small, with COS/CO 2 being 0.4 ppt/ppm; the isotopic signatures are depleted relatively to background atmospheric COS.
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Affiliation(s)
- Sophie L. Baartman
- Institute for Marine and Atmospheric research Utrecht (IMAU), Utrecht University, Utrecht, 3584 CS, The Netherlands
| | - Maarten C. Krol
- Institute for Marine and Atmospheric research Utrecht (IMAU), Utrecht University, Utrecht, 3584 CS, The Netherlands
- Meteorology and Air Quality, Wageningen University & Research Center, Wageningen, 6708 PB, The Netherlands
| | - Thomas Röckmann
- Institute for Marine and Atmospheric research Utrecht (IMAU), Utrecht University, Utrecht, 3584 CS, The Netherlands
| | - Shohei Hattori
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Yokohama, 226-8502, Japan
- International Center for Isotope Effects Research (ICIER), Nanjing University, Nanjing, 210023, China
| | - Kazuki Kamezaki
- Department of Material and Life Sciences, Faculty of Science & Technology, Sophia University, Tokyo, 102‐8554, Japan
- Environmental Management Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8569, Japan
| | - Naohiro Yoshida
- Department of Material and Life Sciences, Faculty of Science & Technology, Sophia University, Tokyo, 102‐8554, Japan
- Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, 152-8550, Japan
- National Institute of Information and Communications Technology, Tokyo, 184-8795, Japan
| | - Maria Elena Popa
- Institute for Marine and Atmospheric research Utrecht (IMAU), Utrecht University, Utrecht, 3584 CS, The Netherlands
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