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de Oliveira C, Ramos SJ, Dinali GS, de Carvalho TS, Martins FAD, Faquin V, de Castro EM, Sarkis JES, Siqueira JO, Guilherme LRG. Biostimulant Response of Foliar Application of Rare Earth Elements on Physiology, Growth, and Yield of Rice. PLANTS (BASEL, SWITZERLAND) 2024; 13:1435. [PMID: 38891244 PMCID: PMC11174946 DOI: 10.3390/plants13111435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 05/15/2024] [Accepted: 05/17/2024] [Indexed: 06/21/2024]
Abstract
Rare earth elements (REEs) have been intentionally used in Chinese agriculture since the 1980s to improve crop yields. Around the world, REEs are also involuntarily applied to soils through phosphate fertilizers. These elements are known to alleviate damage in plants under abiotic stresses, yet there is no information on how these elements act in the physiology of plants. The REE mode of action falls within the scope of the hormesis effect, with low-dose stimulation and high-dose adverse reactions. This study aimed to verify how REEs affect rice plants' physiology to test the threshold dose at which REEs could act as biostimulants in these plants. In experiment 1, 0.411 kg ha-1 (foliar application) of a mixture of REE (containing 41.38% Ce, 23.95% La, 13.58% Pr, and 4.32% Nd) was applied, as well as two products containing 41.38% Ce and 23.95% La separately. The characteristics of chlorophyll a fluorescence, gas exchanges, SPAD index, and biomass (pot conditions) were evaluated. For experiment 2, increasing rates of the REE mix (0, 0.1, 0.225, 0.5, and 1 kg ha-1) (field conditions) were used to study their effect on rice grain yield and nutrient concentration of rice leaves. Adding REEs to plants increased biomass production (23% with Ce, 31% with La, and 63% with REE Mix application) due to improved photosynthetic rate (8% with Ce, 15% with La, and 27% with REE mix), favored by the higher electronic flow (photosynthetic electron transport chain) (increase of 17%) and by the higher Fv/Fm (increase of 14%) and quantum yield of photosystem II (increase of 20% with Ce and La, and 29% with REE Mix), as well as by increased stomatal conductance (increase of 36%) and SPAD index (increase of 10% with Ce, 12% with La, and 15% with REE mix). Moreover, adding REEs potentiated the photosynthetic process by increasing rice leaves' N, Mg, K, and Mn concentrations (24-46%). The dose for the higher rice grain yield (an increase of 113%) was estimated for the REE mix at 0.72 kg ha-1.
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Affiliation(s)
- Cynthia de Oliveira
- Departamento de Ciência do Solo, Universidade Federal de Lavras (UFLA), Lavras 37203-202, Brazil; (C.d.O.); (T.S.d.C.); (V.F.); (J.O.S.)
| | - Silvio Junio Ramos
- Instituto Tecnológico Vale—Desenvolvimento Sustentável, Rua Boaventura da Silva, 955, Belém 66055-090, Brazil;
| | | | - Teotonio Soares de Carvalho
- Departamento de Ciência do Solo, Universidade Federal de Lavras (UFLA), Lavras 37203-202, Brazil; (C.d.O.); (T.S.d.C.); (V.F.); (J.O.S.)
| | | | - Valdemar Faquin
- Departamento de Ciência do Solo, Universidade Federal de Lavras (UFLA), Lavras 37203-202, Brazil; (C.d.O.); (T.S.d.C.); (V.F.); (J.O.S.)
| | | | - Jorge Eduardo Souza Sarkis
- Instituto de Pesquisas Energéticas e Nucleares (IPEN), Universidade de São Paulo (USP), Avenida Lineu Prestes, 2242, Cidade Universitária, São Paulo 05508-000, Brazil;
| | - José Oswaldo Siqueira
- Departamento de Ciência do Solo, Universidade Federal de Lavras (UFLA), Lavras 37203-202, Brazil; (C.d.O.); (T.S.d.C.); (V.F.); (J.O.S.)
| | - Luiz Roberto Guimarães Guilherme
- Departamento de Ciência do Solo, Universidade Federal de Lavras (UFLA), Lavras 37203-202, Brazil; (C.d.O.); (T.S.d.C.); (V.F.); (J.O.S.)
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Effects of phosphorus-modified biochar as a soil amendment on the growth and quality of Pseudostellaria heterophylla. Sci Rep 2022; 12:7268. [PMID: 35508663 PMCID: PMC9066396 DOI: 10.1038/s41598-022-11170-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/18/2022] [Indexed: 11/20/2022] Open
Abstract
Phosphorus (P) deficiency in agricultural soil is a worldwide concern. P modification of biochar, a common soil conditioner produced by pyrolysis of wastes and residues, can increase P availability and improve soil quality. This study aims to investigate the effects of P-modified biochar as a soil amendment on the growth and quality of a medicinal plant (Pseudostellaria heterophylla). P. heterophylla were grown for 4 months in lateritic soil amended with P-modified and unmodified biochar (peanut shell) at dosages of 0, 3% and 5% (by mass). Compared with unmodified biochar, P-modified biochar reduced available heavy metal Cd in soil by up to 73.0% and osmotic suction in the root zone by up to 49.3%. P-modified biochar application at 3% and 5% promoted the tuber yield of P. heterophylla significantly by 68.6% and 136.0% respectively. This was different from that in unmodified biochar treatment, where tuber yield was stimulated at 3% dosage but inhibited at 5% dosage. The concentrations of active ingredients (i.e., polysaccharides, saponins) in tuber were increased by 2.9–78.8% under P-modified biochar amendment compared with control, indicating the better tuber quality. This study recommended the application of 5% P-modified biochar for promoting the yield and quality of P. heterophylla.
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Alleviatory effect of rare earth micro-fertilizer on photosystem II (PSII) photoinhibition in Pseudostellaria heterophylla leaves at photosynthetic midday depression. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2021.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Agathokleous E, Kitao M, Calabrese EJ. Hormesis: Highly Generalizable and Beyond Laboratory. TRENDS IN PLANT SCIENCE 2020; 25:1076-1086. [PMID: 32546350 DOI: 10.1016/j.tplants.2020.05.006] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/13/2020] [Accepted: 05/20/2020] [Indexed: 05/17/2023]
Abstract
Hormesis is a biphasic dose-response relationship with contrasting effects of low versus high doses of stress. Hormesis is rapidly developing in plant science research and has wide implications for risk assessment, stress biology, and agriculture. Here, we explore selected areas of importance to the concept of hormesis and suggest that hormesis is a highly generalizable phenomenon. We address the questions of whether hormesis occurs in high-risk groups or in response to mixtures of stress-inducing agents, whether there is a single biological mechanism of hormesis, and what the temporal features of hormesis are.
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Affiliation(s)
- Evgenios Agathokleous
- Key Laboratory of Agrometeorology of Jiangsu Province, Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China.
| | - Mitsutoshi Kitao
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, Hokkaido 062-8516, Japan
| | - Edward J Calabrese
- Department of Public Health, Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA
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Zaiyou J, Xiuren Z, Jing T. Photosynthetic and Chlorophyll Fluorescence Characteristics of Isodon rubescens (Hemsley) H. Hara. Sci Rep 2020; 10:10043. [PMID: 32572147 PMCID: PMC7308342 DOI: 10.1038/s41598-020-67192-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 06/04/2020] [Indexed: 11/14/2022] Open
Abstract
The ecological and economic cultivation of Isodon rubescens is currently being carried out. The demand of I. rubescens for light intensity should be made clear to estimate whether the environmental conditions of an area are suitable for cultivating I. Rubescens and improve cultivation techniques. The photosynthetic and chlorophyll fluorescence characteristics of I. rubescens were determined with a Li-6400 photosynthesis system and PAM-2500 portable chlorophyll fluorescence apparatus. The results showed that there was no obvious midday depression of photosynthesis in I. rubescens leaves. The light compensation point and light saturation point of I. rubescens leaves were 21.83482 µmol·m−2·s−1 and 802.262 µmol·m−2·s−1, respectively. The CO2 compensation point and CO2 saturation point of I. rubescens leaves were 101.7199 µmol·mol−1 and 1674.514 µmol·mol−1, respectively. The maximal photochemical efficiency of photosystem II ((Fm-Fo)/Fm) in I. rubescens leaves reached 0.7. The electron transport rate of photosystem II in I. rubescens leaves reached 20 μmol electrons/(m2·s). I. rubescens can tolerate intense light above the light compensation point and utilize low light. I. rubescens leaves have a strong photoprotective capacity. I. rubescens can grow in both sunny and shady places. The most important factor affecting photosynthetic efficiency in I. rubescens leaves is the concentration of CO2 in air.
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Affiliation(s)
- Jian Zaiyou
- Henan Institute of Science and Technology, Xinxiang, China, 453003.
| | - Zhou Xiuren
- Henan Institute of Science and Technology, Xinxiang, China, 453003
| | - Tian Jing
- Henan Institute of Science and Technology, Xinxiang, China, 453003
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Agathokleous E, Kitao M, Harayama H. On the Nonmonotonic, Hormetic Photoprotective Response of Plants to Stress. Dose Response 2019; 17:1559325819838420. [PMID: 31019428 PMCID: PMC6466465 DOI: 10.1177/1559325819838420] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 02/26/2019] [Indexed: 11/29/2022] Open
Abstract
Accumulated evidence show that reactive species play a dual role in plants as
well, with likely biphasic responses. This suggests that photoprotective
mechanisms may also show similar patterns because they are highly related to
reactive species. The nonphotochemical quenching (NPQ) is an index of heat
dissipation of excitation energy in the antenna system. We present here
preliminary evidence from some published studies showing significant biphasic
response of NPQ to increasing doses of stress, with U-shaped or inverted
U-shaped dose–response relationships, typical of hormesis. This evidence
provides a remarkable perspective for designing novel studies where the fate of
light energy will be seen through the lens of hormesis.
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Affiliation(s)
- Evgenios Agathokleous
- Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing, Jiangsu, China.,Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, Sapporo, Hokkaido, Japan
| | - Mitsutoshi Kitao
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, Sapporo, Hokkaido, Japan
| | - Hisanori Harayama
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, Sapporo, Hokkaido, Japan
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Agathokleous E, Kitao M, Calabrese EJ. Hormetic dose responses induced by lanthanum in plants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 244:332-341. [PMID: 30347380 DOI: 10.1016/j.envpol.2018.10.007] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/01/2018] [Accepted: 10/01/2018] [Indexed: 06/08/2023]
Abstract
Rare earth elements (REEs) have recently received particular attention due to their accumulation in the environment. Such heightened recognition prompted our evaluation of the possible occurrence of La-induced plant hormesis in the peer-reviewed literature. This study revealed 703 La-induced hormetic concentration/dose responses in plants, which were quantitatively and qualitatively assessed. The maximum (MAX) biological response to low La concentrations/doses is commonly below 150% of control response, with a geometric mean of 142% at 56 μM (geometric mean). The geometric mean concentration of the no-observed-adverse-effect-level (NOAEL) was 249 μM. The MAX:NOAEL distance was commonly below 5-fold, with a geometric mean of 4.5-fold. Hormetic concentration/dose responses varied as per the growth substrate pH, number of concentrations/doses below the NOAEL, and time window. These results provide a unique insight into the effects of low doses of La on plant growth, as well as offer means for improving experimental designs to assess low dose effects.
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Affiliation(s)
- Evgenios Agathokleous
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, Hokkaido, 062-8516, Japan; Research Faculty of Agriculture, Hokkaido University, Kita 9 Nishi 9, Sapporo, Hokkaido, 060-8589, Japan.
| | - Mitsutoshi Kitao
- Hokkaido Research Center, Forestry and Forest Products Research Institute (FFPRI), Forest Research and Management Organization, 7 Hitsujigaoka, Sapporo, Hokkaido, 062-8516, Japan
| | - Edward J Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA, 01003, USA
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Chen J, Bai H, Xia J, Liu X, Liu Y, Cao Q. Trace detection of Ce3+ by adsorption strip voltammetry at a carbon paste electrode modified with ion imprinted polymers. J RARE EARTH 2018. [DOI: 10.1016/j.jre.2018.03.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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