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Kiryushkin AS, Ilina EL, Kiikova TY, Pawlowski K, Demchenko KN. Do DEEPER ROOTING 1 Homologs Regulate the Lateral Root Slope Angle in Cucumber ( Cucumis sativus)? Int J Mol Sci 2024; 25:1975. [PMID: 38396652 PMCID: PMC10888659 DOI: 10.3390/ijms25041975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/28/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
The architecture of the root system is fundamental to plant productivity. The rate of root growth, the density of lateral roots, and the spatial structure of lateral and adventitious roots determine the developmental plasticity of the root system in response to changes in environmental conditions. One of the genes involved in the regulation of the slope angle of lateral roots is DEEPER ROOTING 1 (DRO1). Its orthologs and paralogs have been identified in rice, Arabidopsis, and several other species. However, nothing is known about the formation of the slope angle of lateral roots in species with the initiation of lateral root primordia within the parental root meristem. To address this knowledge gap, we identified orthologs and paralogs of the DRO1 gene in cucumber (Cucumis sativus) using a phylogenetic analysis of IGT protein family members. Differences in the transcriptional response of CsDRO1, CsDRO1-LIKE1 (CsDRO1L1), and CsDRO1-LIKE2 (CsDRO1L2) to exogenous auxin were analyzed. The results showed that only CsDRO1L1 is auxin-responsive. An analysis of promoter-reporter fusions demonstrated that the CsDRO1, CsDRO1L1, and CsDRO1L2 genes were expressed in the meristem in cell files of the central cylinder, endodermis, and cortex; the three genes displayed different expression patterns in cucumber roots with only partial overlap. A knockout of individual CsDRO1, CsDRO1L1, and CsDRO1L2 genes was performed via CRISPR/Cas9 gene editing. Our study suggests that the knockout of individual genes does not affect the slope angle formation during lateral root primordia development in the cucumber parental root.
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Affiliation(s)
- Alexey S. Kiryushkin
- Laboratory of Cellular and Molecular Mechanisms of Plant Development, Komarov Botanical Institute, Russian Academy of Sciences, 197022 Saint Petersburg, Russia; (A.S.K.); (E.L.I.)
| | - Elena L. Ilina
- Laboratory of Cellular and Molecular Mechanisms of Plant Development, Komarov Botanical Institute, Russian Academy of Sciences, 197022 Saint Petersburg, Russia; (A.S.K.); (E.L.I.)
| | - Tatyana Y. Kiikova
- Laboratory of Cellular and Molecular Mechanisms of Plant Development, Komarov Botanical Institute, Russian Academy of Sciences, 197022 Saint Petersburg, Russia; (A.S.K.); (E.L.I.)
| | - Katharina Pawlowski
- Department of Ecology, Environment and Plant Sciences, Stockholm University, 10691 Stockholm, Sweden
| | - Kirill N. Demchenko
- Laboratory of Cellular and Molecular Mechanisms of Plant Development, Komarov Botanical Institute, Russian Academy of Sciences, 197022 Saint Petersburg, Russia; (A.S.K.); (E.L.I.)
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152
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Guo N, Ling H, Yu R, Gao F, Cao Y, Tao J. Expression of Sailx suchowensis SsIRT9 enhances cadmium accumulation and alters metal homeostasis in tobacco. J Hazard Mater 2024; 463:132958. [PMID: 37951176 DOI: 10.1016/j.jhazmat.2023.132958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/30/2023] [Accepted: 11/06/2023] [Indexed: 11/13/2023]
Abstract
Cadmium (Cd) contamination in soils is of great concern for plant growth and human health. Willow (Salix spp.) is a promising phytoextractor because of its high biomass production. However, as a non-hyperaccumulator, willow has a low competitive ability in extraction of Cd. Thus, improving Cd concentrations in developing tissues is one of the primary tasks. Here, our study uncovers a novel SsIRT9 gene from Sailx suchowensis which manipulates plant Cd accumulation. SsIRT9 was more highly expressed in willow roots than other SsIRT genes. As a plasma membrane-localized protein, when expressed in yeast, SsIRT9 retarded cell growth more severely than other SsIRT proteins in the presence of Cd. Furthermore, SsIRT9 was cloned and expressed in tobacco and SsIRT9 did not affect plant growth. In hydroponic experiments, SsIRT9 lines displayed higher Cd in the shoots than the wild type. When grown in Cd-contaminated soils, Cd levels in transgenic tobacco increased by 152-364% in roots and by 135-444% in shoots, demonstrating significant superiority in Cd accumulation over other functional IRT/ZIP transporters. Moreover, expressing SsIRT9 in tobacco altered metal homeostasis, especially manganese and zinc. Taken together, we envision that SsIRT9 expression in plants is a promising strategy for upgrading extraction of Cd from soils.
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Affiliation(s)
- Nan Guo
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Hui Ling
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Renkui Yu
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Fei Gao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, Jiangsu, China
| | - Yue Cao
- School of Environmental Science and Engineering, Guangdong Provincial Key Lab for Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510006, China
| | - Jun Tao
- College of Horticulture and Landscape Architecture, Yangzhou University, Yangzhou 225009, Jiangsu, China.
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153
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Wu H, Tong J, Jiang X, Wang J, Zhang H, Luo Y, Pang J, Shi J. More effective than direct contact: Nano hydroxyapatite pre-treatment regulates the growth and Cd uptake of rice (Oryza sativa L.) seedlings. J Hazard Mater 2024; 463:132889. [PMID: 37922579 DOI: 10.1016/j.jhazmat.2023.132889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/08/2023] [Accepted: 10/27/2023] [Indexed: 11/07/2023]
Abstract
Cd contamination in rice urgently needs to be addressed. Nano hydroxyapatite (n-HAP) is an eco-friendly material with excellent Cd fixation ability. However, due to its own high reactivity, innovative application of n-HAP in the treatment of Cd contamination in rice is needed. In this study, we proposed a new application, namely n-HAP pre-treatment, which can effectively reduce Cd accumulation in rice and alleviate Cd stress. The results showed that 80 mg/L n-HAP pre-treatment significantly reduced Cd content in rice shoot by 35.1%. Biochemical and combined transcriptomic-proteomic analysis revealed the possible molecular mechanisms by which n-HAP pre-treatment promoted rice growth and reduced Cd accumulation. (1) n-HAP pre-treatment regulated gibberellin and jasmonic acid synthesis-related pathways, increased gibberellin content and decreased jasmonic acid content in rice root, which promoted rice growth; (2) n-HAP pre-treatment up-regulated gene CATA1 expression and down-regulated gene OsGpx1 expression, which increased rice CAT activity and GSH content; (3) n-HAP pre-treatment up-regulated gene OsZIP1 expression and down-regulated gene OsNramp1 expression, which reduced Cd uptake, increased Cd efflux from rice root cells.
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Affiliation(s)
- Hanxin Wu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Jianhao Tong
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Xiaohan Jiang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Jing Wang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Haonan Zhang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Yating Luo
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Jingli Pang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China
| | - Jiyan Shi
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China; MOE Key laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou 310058, China.
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154
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Zhang T, Liu L, Chen Q, Wang Y, Gao X, Ma X, Yan P. Comparative Assessment of In Vitro Xanthine Oxidase and α-Glucosidase Inhibitory Activities of Cultured Cambial Meristematic Cells, Adventitious Roots, and Field-Cultivated Ginseng. Nutrients 2024; 16:443. [PMID: 38337727 PMCID: PMC10857066 DOI: 10.3390/nu16030443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/16/2024] [Accepted: 01/19/2024] [Indexed: 02/12/2024] Open
Abstract
Panax ginseng, a traditional Chinese medicine with a history spanning thousands of years, faces overexploitation and challenges related to extended growth periods. Tissue-cultured adventitious roots and stem cells are alternatives to wild and field-cultivated ginseng. In this study, we assessed the in vitro xanthine oxidase and α-glucosidase inhibitory activities of saponin extracts among cultured cambial meristematic cells (CMC), adventitious ginseng roots (AGR), and field-cultivated ginseng roots (CGR). The xanthine oxidase (XO) and α-glucosidase inhibitory activities were determined by uric acid estimation and the p-NPG method, respectively. Spectrophotometry and the Folin-Ciocalteu, aluminum nitrate, and Bradford methods were employed to ascertain the total saponins and phenolic, flavonoid, and protein contents. The calculated IC50 values for total saponin extracts against XO and α-glucosidase were 0.665, 0.844, and >1.6 mg/mL and 0.332, 0.745, and 0.042 mg/mL for AGR, CMC, CGR, respectively. Comparing the total saponin, crude protein, and total phenolic contents revealed that AGR > CMC > CGR. To the best of our knowledge, this study presents the first report on the in vitro comparison of xanthine oxidase and α-glucosidase inhibitory activities among AGR, CMC, and CGR. The findings offer valuable insights into the development of hypoglycemic and antihyperuricemic medicinal, nutraceutical, and functional products utilizing AGR and CMC.
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Affiliation(s)
- Tianhe Zhang
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China; (T.Z.); (Q.C.)
| | - Lijun Liu
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China; (T.Z.); (Q.C.)
| | - Qiqi Chen
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China; (T.Z.); (Q.C.)
| | - Yifei Wang
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China; (T.Z.); (Q.C.)
| | - Xiujun Gao
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China; (T.Z.); (Q.C.)
| | - Xingyi Ma
- School of Science, Harbin Institute of Technology, Shenzhen 518055, China
- Biosen International, Jinan 250117, China
- Briteley Institute of Life Sciences, Yantai 264003, China
- Shandong Key Laboratory of Biochemical Analysis, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Peisheng Yan
- School of Marine Science and Technology, Harbin Institute of Technology, Weihai 264209, China; (T.Z.); (Q.C.)
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155
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Aleksza D, Spiridon A, Tarkka M, Hauser MT, Hann S, Causon T, Kratena N, Stanetty C, George TS, Russell J, Oburger E. Phytosiderophore pathway response in barley exposed to iron, zinc or copper starvation. Plant Sci 2024; 339:111919. [PMID: 37992897 DOI: 10.1016/j.plantsci.2023.111919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/04/2023] [Accepted: 11/06/2023] [Indexed: 11/24/2023]
Abstract
Efficient micronutrient acquisition is a critical factor in selecting micronutrient dense crops for human consumption. Enhanced exudation and re-uptake of metal chelators, so-called phytosiderophores, by roots of graminaceous plants has been implicated in efficient micronutrient acquisition. We compared PS biosynthesis and exudation as a response mechanism to either Fe, Zn or Cu starvation. Two barley (Hordeum vulgare L.) lines with contrasting micronutrient grain yields were grown hydroponically and PS exudation (LC-MS) and root gene expression (RNAseq) were determined after either Fe, Zn, or Cu starvation. The response strength of the PS pathway was micronutrient dependent and decreased in the order Fe > Zn > Cu deficiency. We observed a stronger expression of PS pathway genes and greater PS exudation in the barley line with large micronutrient grain yield suggesting that a highly expressed PS pathway might be an important trait involved in high micronutrient accumulation. In addition to several metal specific transporters, we also found that the expression of IRO2 and bHLH156 transcription factors was not only induced under Fe but also under Zn and Cu deficiency. Our study delivers important insights into the role of the PS pathway in the acquisition of different micronutrients.
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Affiliation(s)
- David Aleksza
- University of Natural Resources and Life Sciences, Department of Forest and Soil Science, Institute of Soil Research, Konrad-Lorenz Strasse 24, Tulln an der Donau 3430, Austria; University of Natural Resources and Life Sciences, Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, Muthgasse 18, 1190 Vienna, Austria
| | - Andreea Spiridon
- University of Natural Resources and Life Sciences, Department of Forest and Soil Science, Institute of Soil Research, Konrad-Lorenz Strasse 24, Tulln an der Donau 3430, Austria
| | - Mika Tarkka
- Helmholtz Centre for Environmental Research - UFZ, Department of Soil Ecology, Theodor-Lieser-Strasse 4, D-06120 Halle (Saale), Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Deutscher Platz 5e, D-04103 Leipzig, Germany
| | - Marie-Theres Hauser
- University of Natural Resources and Life Sciences, Department of Applied Genetics and Cell Biology, Institute of Molecular Plant Biology, Muthgasse 18, 1190 Vienna, Austria
| | - Stephan Hann
- University of Natural Resources and Life Sciences, Department of Chemistry, Institute of Analytical Chemistry, Muthgasse 18, 1190 Vienna, Austria
| | - Tim Causon
- University of Natural Resources and Life Sciences, Department of Chemistry, Institute of Analytical Chemistry, Muthgasse 18, 1190 Vienna, Austria
| | - Nicolas Kratena
- TU Wien, Institute of Applied Synthetic Chemistry, Getreidemarkt 9, 1060 Vienna, Austria
| | - Christian Stanetty
- TU Wien, Institute of Applied Synthetic Chemistry, Getreidemarkt 9, 1060 Vienna, Austria
| | | | - Joanne Russell
- The James Hutton Institute, Invergowrie, Dundee DD2 5DA, UK
| | - Eva Oburger
- University of Natural Resources and Life Sciences, Department of Forest and Soil Science, Institute of Soil Research, Konrad-Lorenz Strasse 24, Tulln an der Donau 3430, Austria.
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156
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Giovannetti M, Binci F, Navazio L, Genre A. Nonbinary fungal signals and calcium-mediated transduction in plant immunity and symbiosis. New Phytol 2024; 241:1393-1400. [PMID: 38013492 DOI: 10.1111/nph.19433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/08/2023] [Indexed: 11/29/2023]
Abstract
Chitin oligomers (COs) are among the most common and active fungal elicitors of plant responses. Short-chain COs from symbiotic arbuscular mycorrhizal fungi activate accommodation responses in the host root, while long-chain COs from pathogenic fungi are acknowledged to trigger defence responses. The modulation of intracellular calcium concentration - a common second messenger in a wide variety of plant signal transduction processes - plays a central role in both signalling pathways with distinct signature features. Nevertheless, mounting evidence suggests that plant immunity and symbiosis signalling partially overlap at multiple levels. Here, we elaborate on recent findings on this topic, highlighting the nonbinary nature of chitin-based fungal signals, their perception and their interpretation through Ca2+ -mediated intracellular signals. Based on this, we propose that plant perception of symbiotic and pathogenic fungi is less clear-cut than previously described and involves a more complex scenario in which partially overlapping and blurred signalling mechanisms act upstream of the unambiguous regulation of gene expression driving accommodation or defence responses.
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Affiliation(s)
- Marco Giovannetti
- Department of Life Sciences and Systems Biology, University of Torino, 10125, Torino, Italy
- Department of Biology, University of Padova, 35131, Padova, Italy
| | - Filippo Binci
- Department of Biology, University of Padova, 35131, Padova, Italy
| | - Lorella Navazio
- Department of Biology, University of Padova, 35131, Padova, Italy
| | - Andrea Genre
- Department of Life Sciences and Systems Biology, University of Torino, 10125, Torino, Italy
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157
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Zheng X, Jiang J, Wang C, Hua Y, Huang H, Xu Y, Wei P, Tao J, Cao P, Kang Z, Li X, Gao Q, Chen Q. NRAMP6c plays a key role in plant cadmium accumulation and resistance in tobacco (Nicotiana tabacum L.). Ecotoxicol Environ Saf 2024; 271:115885. [PMID: 38194857 DOI: 10.1016/j.ecoenv.2023.115885] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 01/11/2024]
Abstract
Tobacco plants (Nicotiana tabacum L.) exhibit considerable potential for phytoremediation of soil cadmium (Cd) pollutants, owing to their substantial biomass and efficient metal accumulation capabilities. The reduction of Cd accumulation in tobacco holds promise for minimizing Cd intake in individuals exposed to cigar smoking. NRAMP transporters are pivotal in the processes of Cd accumulation and resistance in plants; however, limited research has explored the functions of NRAMPs in tobacco plants. In this investigation, we focused on NtNRAMP6c, one of the three homologs of NRAMP6 in tobacco. We observed a robust induction of NtNRAMP6c expression in response to both Cd toxicity and iron (Fe) deficiency, with the highest expression levels detected in the roots. Subsequent subcellular localization and heterologous expression analyses disclosed that NtNRAMP6c functions as a plasma membrane-localized Cd transporter. Moreover, its overexpression significantly heightened the sensitivity of yeast cells to Cd toxicity. Through CRISPR-Cas9-mediated knockout of NtNRAMP6c, we achieved a reduction in Cd accumulation and an enhancement in Cd resistance in tobacco plants. Comparative transcriptomic analysis unveiled substantial alterations in the transcriptional profiles of genes associated with metal ion transport, photosynthesis, and macromolecule catabolism upon NtNRAMP6c knockout. Furthermore, our study employed plant metabolomics and rhizosphere metagenomics to demonstrate that NtNRAMP6c knockout led to changes in phytohormone homeostasis, as well as shifts in the composition and abundance of microbial communities. These findings bear significant biological implications for the utilization of tobacco in phytoremediation strategies targeting Cd pollutants in contaminated soils, and concurrently, in mitigating Cd accumulation in tobacco production destined for cigar consumption.
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Affiliation(s)
- Xueao Zheng
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
| | - Jiarui Jiang
- Technology Center, China Tobacco Yunnan Industrial Co. LTD, No. 181 Hongjin Road, Kunming, Yunnan Province 650000, China.
| | - Chen Wang
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
| | - Yingpeng Hua
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450001, China.
| | - Haitao Huang
- Technology Center, China Tobacco Yunnan Industrial Co. LTD, No. 181 Hongjin Road, Kunming, Yunnan Province 650000, China.
| | - Yalong Xu
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
| | - Pan Wei
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
| | - Jiemeng Tao
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
| | - Peijian Cao
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
| | - Zhengzhong Kang
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
| | - Xuemei Li
- Technology Center, China Tobacco Yunnan Industrial Co. LTD, No. 181 Hongjin Road, Kunming, Yunnan Province 650000, China.
| | - Qian Gao
- Technology Center, China Tobacco Yunnan Industrial Co. LTD, No. 181 Hongjin Road, Kunming, Yunnan Province 650000, China.
| | - Qiansi Chen
- Zhengzhou Tobacco Research Institute of CNTC, No. 2 Fengyang Street, Zhengzhou, Henan Province 450001, China; Beijing Life Science Academy (BLSA), Beijing 102209, China.
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158
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Li XY, Li SQ, Jiang YF, Yang Q, Zhang JC, Kuzyakov Y, Teng HH, Guan DX. Multi-imaging platform for rhizosphere studies: Phosphorus and oxygen fluxes. J Environ Manage 2024; 351:119763. [PMID: 38071921 DOI: 10.1016/j.jenvman.2023.119763] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 11/22/2023] [Accepted: 12/03/2023] [Indexed: 01/14/2024]
Abstract
Rhizosphere is a soil volume of high spatio-temporal heterogeneity and intensive plant-soil-microbial interactions, for which visualization and process quantification is of highest scientific and applied relevance, but still very challenging. A novel methodology for quick assessment of two-dimensional distribution of available phosphorus (P) in rhizosphere was suggested, tested, and development up to the application platform. Available P was firstly trapped by an in-situ diffusive gradients in thin-films (DGT) sampler with precipitated zirconia as the binding gel, and subsequently, the loaded gel was analyzed with an optimized colorimetric imaging densitometry (CID). The imaging platform was established linking: i) DGT, ii) planar optode, and iii) soil zymography techniques to simultaneously determine available P, oxygen, and acid phosphatase in rhizosphere at sub-millimeter spatial scales. The DGT identified available P level in rice rhizosphere were spatially overlapping to the localized redox hotspots and phosphatase activity. The spatial relationship between available P and acid phosphatase activity was dependent on root development. The root radial oxygen loss (ROL) remained active during the experimental observations (2-3 days), while a flux of available P of 10 pg cm-2 s-1 was visualized within 2-3 mm of roots, confirming the correlative response of rice roots to oxygen secretion and P uptake. Summarizing, the established imaging platform is suitable to capture spatial heterogeneity and temporal dynamics of root activities, nutrient bioavailability, ROL and enzyme activities in rhizosphere.
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Affiliation(s)
- Xi-Yuan Li
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China
| | - Su-Qing Li
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China
| | - Yi-Fan Jiang
- Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Qiong Yang
- School of Agricultural Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Jian-Chao Zhang
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China
| | - Yakov Kuzyakov
- Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Göttingen, Göttingen, 37077, Germany; Agro-Technological Institute, RUDN University, Moscow, 117198, Russia; Institute of Environmental Sciences, Kazan Federal University, 420049, Kazan, Russia
| | - H Henry Teng
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China
| | - Dong-Xing Guan
- Tianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai Rim, Institute of Surface-Earth System Science, School of Earth System Science, Tianjin University, Tianjin, 300072, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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159
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Guo M, Ruan W, Li R, Xu L, Hani S, Zhang Q, David P, Ren J, Zheng B, Nussaume L, Yi K. Visualizing plant intracellular inorganic orthophosphate distribution. Nat Plants 2024; 10:315-326. [PMID: 38195907 DOI: 10.1038/s41477-023-01612-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 12/13/2023] [Indexed: 01/11/2024]
Abstract
Intracellular inorganic orthophosphate (Pi) distribution and homeostasis profoundly affect plant growth and development. However, its distribution patterns remain elusive owing to the lack of efficient cellular Pi imaging methods. Here we develop a rapid colorimetric Pi imaging method, inorganic orthophosphate staining assay (IOSA), that can semi-quantitatively image intracellular Pi with high resolution. We used IOSA to reveal the alteration of cellular Pi distribution caused by Pi starvation or mutations that alter Pi homeostasis in two model plants, rice and Arabidopsis, and found that xylem parenchyma cells and basal node sieve tube element cells play a critical role in Pi homeostasis in rice. We also used IOSA to screen for mutants altered in cellular Pi homeostasis. From this, we have identified a novel cellular Pi distribution regulator, HPA1/PHO1;1, specifically expressed in the companion and xylem parenchyma cells regulating phloem Pi translocation from the leaf tip to the leaf base in rice. Taken together, IOSA provides a powerful method for visualizing cellular Pi distribution and facilitates the analysis of Pi signalling and homeostasis from the level of the cell to the whole plant.
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Affiliation(s)
- Meina Guo
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
- State Key Laboratory of Efficient Production of Forest Resources/ National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China
| | - Wenyuan Ruan
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China.
| | - Ruili Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lei Xu
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Sahar Hani
- EBMP (Environnement, Bioénergies, Microalgues et Plantes), Aix Marseille Univ, CEA, CNRS, UMR7265, BIAM, Saint-Paul lez Durance, France
| | - Qianqian Zhang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Pascale David
- EBMP (Environnement, Bioénergies, Microalgues et Plantes), Aix Marseille Univ, CEA, CNRS, UMR7265, BIAM, Saint-Paul lez Durance, France
| | - Jianhao Ren
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Bingsong Zheng
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, China
| | - Laurent Nussaume
- EBMP (Environnement, Bioénergies, Microalgues et Plantes), Aix Marseille Univ, CEA, CNRS, UMR7265, BIAM, Saint-Paul lez Durance, France
| | - Keke Yi
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China/Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China.
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Nawaz I, Mehboob A, Khan AHA, Naqvi TA, Bangash N, Aziz S, Khan W, Shahzadi I, Barros R, Ullah K, Shah MM. Higher cadmium and zinc accumulation in parsley (Petroselinum crispum) roots activates its antioxidants defense system. Biometals 2024; 37:87-100. [PMID: 37702876 DOI: 10.1007/s10534-023-00529-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 08/05/2023] [Indexed: 09/14/2023]
Abstract
Parsley (Petroselinum crispum) is herb with many biological and medicinal benefits for humans. However, growth on zinc (Zn) and cadmium (Cd) contaminated sites might get severely affected due to over accumulation of heavy metals (HM) in different plant tissues. Antioxidants play a crucial role in minimizing the negative effects of HM. The present study investigates the effects of Zn and Cd stress on P. crispum morphological parameters, enzymatic/non-enzymatic antioxidant profiling and metal accumulation in shoot/root. Plants were exposed to different concentrations of Zn (50, 100, 150 and 200 µM) and Cd (10, 20, 40 and 80 µM) along with control (no stress), in soil-less Hoagland's solution. The results showed that Zn and Cd substantially decrease the growth parameters with increased contents of malondialdehyde (MDA), hydrogen peroxide (H2O2), and electrolyte leakage (EL). Non-enzymatic antioxidant activities, like total phenolic contents (TPC) and ferric reducing antioxidant power (FRAP), were induced high in leaves only upon Cd stress and contrarily decreased upon Zn stress. Total flavonoid contents (TFC) were decreased under Zn and Cd stress. Enzymatic antioxidant activities like superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX) were also strongly induced upon Cd stress. At the same time, SOD and guaiacol peroxidase (GPX) activity was induced significantly upon Zn stress. Cd uptake and accumulation was notably high in roots as compared to shoots, which suggests P. crispum have a reduced ability to translocate Cd towards aboveground parts (leaves). Additionally, strong induction of antioxidants by P. crispum under Cd stress might indicate the capacity to effectively re-modulate its physiological response. However, further investigations regarding other HMs and experiments at the molecular level are still needed.
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Affiliation(s)
- Ismat Nawaz
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Atifa Mehboob
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Aqib Hassan Ali Khan
- International Research Center in Critical Raw Materials and Advanced Industrial Technologies, Universidad de Burgos, 09001, Burgos, Spain
| | - Tatheer Alam Naqvi
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Nazneen Bangash
- Department of Biosciences, COMSATS University Islamabad, Islamabad, Pakistan
| | - Sadia Aziz
- Islamabad Model College for Girls, F-7/4, Islamabad, Pakistan
| | - Wajiha Khan
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Irum Shahzadi
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Rocío Barros
- International Research Center in Critical Raw Materials and Advanced Industrial Technologies, Universidad de Burgos, 09001, Burgos, Spain
| | - Kifayat Ullah
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Mohammad Maroof Shah
- Department of Biotechnology, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan.
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161
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Dolphen R, Thiravetyan P. Exogenous γ-aminobutyric acid and Bacillus pumilus reduce arsenic uptake and toxicity in rice. Environ Sci Pollut Res Int 2024; 31:10609-10620. [PMID: 38198091 DOI: 10.1007/s11356-024-31893-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 01/03/2024] [Indexed: 01/11/2024]
Abstract
In this study, the addition of γ-aminobutyric acid (GABA), Bacillus pumilus, or both, was found to enhance rice growth and yield while significantly decreasing arsenic (As) accumulation in Oryza sativa rice tissues. GABA emerged as a regulator of iron (Fe) homeostasis, acting as a signaling modulator that influenced phytosiderophore secretions in the plant. Meanwhile, B. pumilus directly increased Fe levels through siderophore production, promoting the development of Fe-rich rice plants. Subsequently, Fe competed with As uptake at the root surface, leading to decreased As levels and translocation to the grains. Furthermore, the addition of GABA and B. pumilus optimized rice indole-3 acetic acid (IAA) contents, thereby adjusting cell metabolite balance under As stress. This adjustment results in low malondialdehyde (MDA) contents in the leaves and roots during the early and late vegetative phases, effectively reducing oxidative stress. When added to As-contaminated soil, GABA and B. pumilus effectively maintained endogenous GABA levels and exhibited low ROS generation, similar to normal soil. Concurrently, GABA and B. pumilus significantly downregulated the activity of OsLsi1, OsLsi2, and OsABCC1 in roots, reducing As uptake through roots, shoots, and grains, respectively. These findings suggest that GABA and B. pumilus additions impede As translocation through grains, ultimately enhancing rice productivity under As stress.
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Affiliation(s)
- Rujira Dolphen
- Pilot Plant Development and Training Institute, King Mongkut's University of Technology Thonburi, Bangkok, 10150, Thailand.
| | - Paitip Thiravetyan
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkok, 10150, Thailand
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162
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Mmereke KM, Venkataraman S, Moiketsi BN, Khan MR, Hassan SH, Rantong G, Masisi K, Kwape TE, Gaobotse G, Zulfiqar F, Kumar Sharma S, Malik S, Makhzoum A. Nanoparticle elicitation: A promising strategy to modulate the production of bioactive compounds in hairy roots. Food Res Int 2024; 178:113910. [PMID: 38309862 DOI: 10.1016/j.foodres.2023.113910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 02/05/2024]
Abstract
Hairy root culture is one of the promising biotechnological tools to obtain the stable and sustainable production of specialized metabolites from plants under controlled environment conditions. Various strategies have been adopted to enhance the accumulation of bioactive compounds in hairy roots yet their utilization at the commercial scale is restricted to only a few products. Recently, nanotechnology has been emerged as an active technique that has revolutionized the many sectors in an advantageous way. Elicitation using nanoparticles has been recognized as an effective strategy for enhancing the bioactive compounds of interest in plants. Nanoparticles elicit the activity of defense-related compounds through activation of the specific transcription factors involved in specialized metabolites production. This review discusses the recent progress in using nanoparticles to enhance specialized metabolite biosynthesis using hairy root culture system and the significant achievements in this area of research. Biotic and abiotic elicitors to improve the production of bioactive compounds in hairy roots, different types of nanoparticles as eliciting agents, their properties as dependent on shape, most widely used nanoparticles in plant hairy root systems are described in detail. Further challenges involved in application of nanoparticles, their toxicity in plant cells and risks associated to human health are also envisaged. No doubt, nanoparticle elicitation is a remarkable approach to obtain phytochemicals from hairy roots to be utilized in various sectors including food, medicines, cosmetics or agriculture but it is quite essential to understand the inter-relationships between the nanoparticles and the plant systems in terms of specifics such as type, dosage and time of exposure as well as other important parameters.
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Affiliation(s)
- Kamogelo M Mmereke
- Department of Biological Sciences & Biotechnology, Botswana International University of Science & Technology, Palapye, Botswana
| | - Srividhya Venkataraman
- Virology Laboratory, Department of Cell & Systems Biology, University of Toronto, Toronto, ON M5S 3B2, Canada
| | - Bertha Nametso Moiketsi
- Department of Biological Sciences & Biotechnology, Botswana International University of Science & Technology, Palapye, Botswana
| | - Muhammad Rehan Khan
- Department of Agricultural Science, University of Naples Federico II, Via Università 133, 80055 Portici, Italy; URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 3 Rue des Rouges-Terres, 51110 Pomacle, France
| | - Sayyeda Hira Hassan
- Department of Biosciences and Territory, University of Molise, 86090 Pesche, Italy
| | - Gaolathe Rantong
- Department of Biological Sciences & Biotechnology, Botswana International University of Science & Technology, Palapye, Botswana
| | - Kabo Masisi
- Department of Biological Sciences & Biotechnology, Botswana International University of Science & Technology, Palapye, Botswana
| | - Tebogo E Kwape
- Department of Biological Sciences & Biotechnology, Botswana International University of Science & Technology, Palapye, Botswana
| | - Goabaone Gaobotse
- Department of Biological Sciences & Biotechnology, Botswana International University of Science & Technology, Palapye, Botswana
| | - Faisal Zulfiqar
- Department of Horticultural Sciences, Faculty of Agriculture and Environment, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | | | - Sonia Malik
- Physiology, Ecology and Environment (P2E) Laboratory, University of Orleans, INRAE, USC1328, 45067 Orleans, France.
| | - Abdullah Makhzoum
- Department of Biological Sciences & Biotechnology, Botswana International University of Science & Technology, Palapye, Botswana.
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163
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Wiśniewska J, Kęsy J, Mucha N, Tyburski J. Auxin resistant 1 gene (AUX1) mediates auxin effect on Arabidopsis thaliana callus growth by regulating its content and distribution pattern. J Plant Physiol 2024; 293:154168. [PMID: 38176282 DOI: 10.1016/j.jplph.2023.154168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/06/2024]
Abstract
Callus sustained growth relies heavily on auxin, which is supplied to the culture medium. Surprisingly, there is a noticeable absence of information regarding the involvement of carrier-mediated auxin polar transport gene in callus growth regulation. Here, we delve into the role of the AUXIN RESISTANT 1 (AUX1) influx transporter in the regulation of callus growth, comparing the effects under conditions of light versus darkness. It was observed that callus growth was significantly enhanced under light illumination. This growth-stimulatory effect was accompanied by a decrease in the levels of free auxin within the callus cells when compared to conditions of darkness. In the aux1-22 mutant callus, which lacks functional AUX1, there was a substantial reduction in IAA levels. Nonetheless, the mutant callus exhibited markedly higher growth rates compared to the wild type. This suggests that the reduction in exogenous auxin uptake through the AUX1-dependent pathway may prevent the overaccumulation of growth-restricting hormone concentrations. The growth-stimulatory effect of AUX1 deficiency was counteracted by nonspecific auxin influx transport inhibitors. This finding shows that other auxin influx carriers likely play a role in facilitating the diffusion of auxin from the culture medium to sustain high growth rates. AUX1 was primarily localized in the plasma membranes of the two outermost cell layers of the callus clump and the parenchyma cells adjacent to tracheary elements. Significantly, these locations coincided with the regions of maximal auxin concentration. Consequently, it can be inferred that AUX1 mediates the auxin distribution within the callus.
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Affiliation(s)
- Justyna Wiśniewska
- Plant Physiology and Biotechnology Department, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4, 87-100 Toruń, Poland
| | - Jacek Kęsy
- Plant Physiology and Biotechnology Department, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland
| | - Natalia Mucha
- Plant Physiology and Biotechnology Department, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland
| | - Jarosław Tyburski
- Plant Physiology and Biotechnology Department, Nicolaus Copernicus University in Toruń, Lwowska 1, 87-100 Toruń, Poland; Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University in Toruń, Wileńska 4, 87-100 Toruń, Poland.
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164
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Janejobkhet J, Pongprayoon W, Obsuwan K, Jaiyindee S, Maksup S. Multifaceted response mechanisms of Oryza sativa L. 'KDML105' to high arsenite and arsenate stress levels. Environ Sci Pollut Res Int 2024; 31:13816-13832. [PMID: 38265595 DOI: 10.1007/s11356-024-32122-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 01/17/2024] [Indexed: 01/25/2024]
Abstract
Toxicity resulting from high levels of inorganic arsenic (iAs), specifically arsenite (AsIII) and arsenate (AsV), significantly induces oxidative stress and inhibits the growth of rice plants in various ways. Despite its economic importance and significance as a potent elite trait donor in rice breeding programmes, Khao Dawk Mali 105 (KDML105) has received limited attention regarding its responses to As stress. Therefore, this study aimed to comprehensively investigate how KDML105 responds to elevated AsIII and AsV stress levels. In this study, the growth, physiology, biochemical attributes and levels of As stress-associated transcripts were analysed in 45-day-old rice plants after exposing them to media containing 0, 75, 150, 300 and 600 µM AsIII or AsV for 1 and 7 days, respectively. The results revealed that AsIII had a more pronounced impact on the growth and physiological responses of KDML105 compared to AsV at equivalent concentrations. Under elevated AsIII treatment, there was a reduction in growth and photosynthetic efficiency, accompanied by increased levels of hydrogen peroxide (H2O2) and malondialdehyde (MDA). Notably, the total contents of antioxidants, such as proline, phenolics and flavonoids in the shoot, increased by 8.1-fold, 1.4-fold and 1.6-fold, respectively. Additionally, the expression of the OsABCC1 gene in the roots increased by 9.5-fold after exposure to 150 µM AsIII for 1 day. These findings suggest that KDML105's prominent responses to As stress involve sequestering AsIII in vacuoles through the up-regulation of the OsABCC1 gene in the roots, along with detoxifying excessive stress in the leaves through proline accumulation. These responses could serve as valuable traits for selecting As-tolerant rice varieties.
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Affiliation(s)
- Juthathip Janejobkhet
- Department of Biology, Faculty of Science, Silpakorn University, Nakhon Pathom, 73000, Thailand
| | - Wasinee Pongprayoon
- Department of Biology, Faculty of Science, Burapha University, Chon Buri, 20131, Thailand
| | - Kullanart Obsuwan
- Department of Biology, Faculty of Science, Silpakorn University, Nakhon Pathom, 73000, Thailand
| | - Supakit Jaiyindee
- Department of Biology, Faculty of Science, Silpakorn University, Nakhon Pathom, 73000, Thailand
| | - Sarunyaporn Maksup
- Department of Biology, Faculty of Science, Silpakorn University, Nakhon Pathom, 73000, Thailand.
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165
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Meena V, Kaur G, Joon R, Shukla V, Choudhary P, Roy JK, Singh B, Pandey AK. Transcriptome and biochemical analysis in hexaploid wheat with contrasting tolerance to iron deficiency pinpoints multi-layered molecular process. Plant Physiol Biochem 2024; 207:108336. [PMID: 38245990 DOI: 10.1016/j.plaphy.2024.108336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 12/28/2023] [Accepted: 01/03/2024] [Indexed: 01/23/2024]
Abstract
Iron (Fe) is an essential plant nutrient that is indispensable for many physiological activities. This study is an effort to identify the molecular and biochemical basis of wheat genotypes with contrasting tolerance towards Fe deficiency. Our physiological experiments performed at the early growth stage in cv. Kanchan (KAN) showed Fe deficiency tolerance, whereas cv. PBW343 (PBW) was susceptible. Under Fe deficient condition, KAN showed delayed chlorosis, high SPAD values, and low malondialdehyde content compared to PBW, indicative of Fe deficient condition. Comparative shoot transcriptomics revealed increased expression of photosynthetic pathway genes in PBW, further suggesting its sensitivity to Fe fluctuations. Under Fe deficiency, both the cultivars showed distinct molecular re-arrangements such as high expression of genes involved in Fe uptake (including membrane transporters) and its remobilization. Specifically, in KAN these changes lead to high root phytosiderophores (PS) biosynthesis and its release, resulting in enhanced Fe translocation index. Utilizing the non-transgenic TILLING (Targeting Induced Lesions in Genomes) technology, we identified TaZIFL4.2D as a putative PS efflux transporter. Characterization of the wheat TILLING lines indicated that TaZIFL4.2 functions in PS release and Fe acquisition, thereby imparting tolerance to Fe deficiency. Altogether, this work highlights the mechanistic insight into Fe deficiency tolerance of hexaploid wheat, thus enabling breeders to select suitable genotypes to utilize nutrients for maximum yields.
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Affiliation(s)
- Varsha Meena
- National Agri-Food Biotechnology Institute (Department of Biotechnology), Sector 81, Knowledge City, S.A.S. Nagar, Mohali, 140306, Punjab, India; Regional Centre for Biotechnology, Faridabad 121001, India
| | - Gazaldeep Kaur
- National Agri-Food Biotechnology Institute (Department of Biotechnology), Sector 81, Knowledge City, S.A.S. Nagar, Mohali, 140306, Punjab, India
| | - Riya Joon
- National Agri-Food Biotechnology Institute (Department of Biotechnology), Sector 81, Knowledge City, S.A.S. Nagar, Mohali, 140306, Punjab, India
| | - Vishnu Shukla
- Indian Institute of Science Education and Research, Tirupati, India
| | - Promila Choudhary
- National Agri-Food Biotechnology Institute (Department of Biotechnology), Sector 81, Knowledge City, S.A.S. Nagar, Mohali, 140306, Punjab, India
| | - Joy K Roy
- National Agri-Food Biotechnology Institute (Department of Biotechnology), Sector 81, Knowledge City, S.A.S. Nagar, Mohali, 140306, Punjab, India
| | - Bhupinder Singh
- Nutrio-Physiology and Radiation Biology Laboratory, Division of Environment Science, ICAR-Indian Agriculture Research Institute, New Delhi 110012, India
| | - Ajay K Pandey
- National Agri-Food Biotechnology Institute (Department of Biotechnology), Sector 81, Knowledge City, S.A.S. Nagar, Mohali, 140306, Punjab, India.
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166
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Li L, Wu W, Lin H, Zhou L, Zhang D, Ishfaq M, Zhong Y, Li B, Peng Y, Wu X, Yu Y, Li X, Chen Q. Amino acid application inhibits root-to-shoot cadmium translocation in Chinese cabbage by modulating pectin methyl-esterification. Plant Physiol Biochem 2024; 207:108401. [PMID: 38301327 DOI: 10.1016/j.plaphy.2024.108401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/07/2024] [Accepted: 01/24/2024] [Indexed: 02/03/2024]
Abstract
The exogenous application of amino acids (AAs) generally alleviates cadmium (Cd) toxicity in plants by altering their subcellular distribution. However, the physiological mechanisms underlying AA-mediated cell wall (CW) sequestration of Cd in Chinese cabbage remain unclear. Using two genotypes of Chinses cabbage, Jingcui 60 (Cd-tolerant) and 16-7 (Cd-sensitive), we characterized the root structure, subcellular distribution of Cd, CW component, and related gene expression under the Cd stress. Cysteine (Cys) supplementation led to a reduction in the Cd concentration in the shoots of Jingcui 60 and 16-7 by 65.09 % and 64.03 %, respectively. Addition of Cys alleviated leaf chlorosis in both cultivars by increasing Cd chelation in the root CW and reducing its distribution in the cytoplasm and organelles. We further demonstrated that Cys supplementation mediated the downregulation of PMEI1 expression and improving the activity of pectin methyl-esterase (PME) by 17.98 % and 25.52 % in both cultivars, respectively, compared to the Cd treatment, resulting in an approximate 12.00 %-14.70 % increase in Cd retention in pectin. In contrast, threonine (Thr) application did not significantly alter Cd distribution in the shoots of either cultivar. Taken together, our results suggest that Cys application reduces Cd root-to-shoot translocation by increasing Cd sequestration in the root CW through the downregulation of pectin methyl-esterification.
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Affiliation(s)
- Longcheng Li
- Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China; Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Wenliang Wu
- Beijing Key Laboratory of Biodiversity and Organic Farming, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Huiru Lin
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, China
| | - Lin Zhou
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Donghan Zhang
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Muhammad Ishfaq
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, China
| | - Yanting Zhong
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, China
| | - Bingcheng Li
- National Sugar Crop Improvement Centre, College of Advanced Agriculture and Ecological Environment, Heilongjiang University, 74 Xuefu Road, Harbin, 150080, China
| | - Yutao Peng
- School of Agriculture, Sun Yat-sen University, Shenzhen, Guangdong, 523758, China
| | - Xiuwen Wu
- College of Resources and Environmental Sciences, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yifa Yu
- Nanning Harworld Biological Technology, Inc, China
| | - Xuexian Li
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, China Agricultural University, 100193, Beijing, China
| | - Qing Chen
- Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
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167
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Luo J, Chen Z, Huang R, Wu Y, Liu C, Cai Z, Dong R, Arango J, Rao IM, Schultze-Kraft R, Liu G, Liu P. Multi-omics analysis reveals the roles of purple acid phosphatases in organic phosphorus utilization by the tropical legume Stylosanthes guianensis. Plant J 2024; 117:729-746. [PMID: 37932930 DOI: 10.1111/tpj.16526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 10/23/2023] [Indexed: 11/08/2023]
Abstract
Stylo (Stylosanthes guianensis) is a tropical legume known for its exceptional tolerance to low phosphate (Pi), a trait believed to be linked to its high acid phosphatase (APase) activity. Previous studies have observed genotypic variations in APase activity in stylo; however, the gene encoding the crucial APase responsible for this variation remains unidentified. In this study, transcriptomic and proteomic analyses were employed to identify eight Pi starvation-inducible (PSI) APases belonging to the purple APase (PAP) family in the roots of stylo and seven in the leaves. Among these PSI-PAPs, SgPAP7 exhibited a significantly positive correlation in its expression levels with the activities of both internal APase and root-associated APase across 20 stylo genotypes under low-Pi conditions. Furthermore, the recombinant SgPAP7 displayed high catalytic activity toward adenosine 5'-diphosphate (ADP) and phosphoenolpyruvate (PEP) in vitro. Overexpression (OE) of SgPAP7 in Arabidopsis facilitated exogenous organic phosphorus utilization. Moreover, SgPAP7 OE lines showed lower shoot ADP and PEP levels than the wild type, implying that SgPAP7 is involved in the catabolism and recycling of endogenous ADP and PEP, which could be beneficial for plant growth in low-Pi soils. In conclusion, SgPAP7 is a key gene with a major role in stylo adaptation to low-Pi conditions by facilitating the utilization of both exogenous and endogenous organic phosphorus sources. It may also function as a PEP phosphatase involved in a glycolytic bypass pathway that minimizes the need for adenylates and Pi. Thus, SgPAP7 could be a promising target for improving tolerance of crops to low-Pi availability.
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Affiliation(s)
- Jiajia Luo
- Tropical Crops Genetic Resources Institute & National Key Laboratory for Tropical Crop Breeding, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Zhijian Chen
- Tropical Crops Genetic Resources Institute & National Key Laboratory for Tropical Crop Breeding, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Rui Huang
- Tropical Crops Genetic Resources Institute & National Key Laboratory for Tropical Crop Breeding, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Yuanhang Wu
- College of Tropical Crops & College of Forestry, Hainan University, Haikou, 570228, China
| | - Chun Liu
- Tropical Crops Genetic Resources Institute & National Key Laboratory for Tropical Crop Breeding, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
- College of Tropical Crops & College of Forestry, Hainan University, Haikou, 570228, China
| | - Zeping Cai
- College of Tropical Crops & College of Forestry, Hainan University, Haikou, 570228, China
| | - Rongshu Dong
- Tropical Crops Genetic Resources Institute & National Key Laboratory for Tropical Crop Breeding, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Jacobo Arango
- Alliance of Bioversity International and International Center for Tropical Agriculture, Cali, 763537, Colombia
| | - Idupulapati Madhusudana Rao
- Alliance of Bioversity International and International Center for Tropical Agriculture, Cali, 763537, Colombia
| | - Rainer Schultze-Kraft
- Alliance of Bioversity International and International Center for Tropical Agriculture, Cali, 763537, Colombia
| | - Guodao Liu
- Tropical Crops Genetic Resources Institute & National Key Laboratory for Tropical Crop Breeding, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Pandao Liu
- Tropical Crops Genetic Resources Institute & National Key Laboratory for Tropical Crop Breeding, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
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168
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Zhang Y, Song Z, Zhao H, Chen H, Zhao B. Integrative physiological, transcriptomic and metabolomic analysis reveals how the roots of two ornamental Hydrangea macrophylla cultivars cope with lead (Pb) toxicity. Sci Total Environ 2024; 910:168615. [PMID: 37984650 DOI: 10.1016/j.scitotenv.2023.168615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 11/22/2023]
Abstract
Lead (Pb) soil contamination has caused serious ecological and environmental issues. Hydrangea macrophylla is a potential Pb-contaminated soil remediation plant, however, their Pb stress defense mechanism is largely unknown. Here, the physiology, transcriptomic and metabolome of two H. macrophylla cultivars (ML, Pb-sensitive cultivar; JC, Pb-resistant cultivar) under Pb stress were investigated. The results demonstrated that JC performed superiorly, with activities of the antioxidant enzymes superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) were 1.25, 2.84, and 1.67 times higher than those of ML after Pb treatment, respectively, and the amount of soluble sugar in JC increased by 231.34 % compared with that in ML. The electrical conductivity (EC) value of the root exudates of JC was 43.71 % lower than that of ML under Pb stress. The non-targeted metabolomics analysis revealed 193 metabolites grouped into nine categories. Pb stress-induced differential expression of the 37 metabolites, among which the major metabolites up-regulated in ML were organic acids, while in JC, these were carbohydrates, fatty acids, organic acids and lipids. The transcriptomic analysis revealed that Pb exposure induced 1075 and 1314 differentially expressed genes (DEGs) in JC and ML, respectively. According to the functional annotation results, hub genes were primarily enriched in carbohydrate metabolism, root growth, and plant resistance to external stresses. A conjoint analysis of the two omics indicated that the cutin, suberine and wax biosynthesis pathway in JC played an essential role in Pb detoxification. These findings clarify the resistance mechanism of H. macrophylla to Pb stress and open up a new avenue for breeding H. macrophylla Pb-resistant cultivars.
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Affiliation(s)
- Yuyu Zhang
- The College of Landscape Architecture and Arts, Northwest A&F University, Yangling 712100, China
| | - Ziyi Song
- The College of Landscape Architecture and Arts, Northwest A&F University, Yangling 712100, China
| | - Huiqi Zhao
- The College of Landscape Architecture and Arts, Northwest A&F University, Yangling 712100, China
| | - Huan Chen
- The College of Landscape Architecture and Arts, Northwest A&F University, Yangling 712100, China
| | - Bing Zhao
- The College of Landscape Architecture and Arts, Northwest A&F University, Yangling 712100, China.
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169
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Winter CM, Szekely P, Popov V, Belcher H, Carter R, Jones M, Fraser SE, Truong TV, Benfey PN. SHR and SCR coordinate root patterning and growth early in the cell cycle. Nature 2024; 626:611-616. [PMID: 38297119 PMCID: PMC10866714 DOI: 10.1038/s41586-023-06971-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Accepted: 12/13/2023] [Indexed: 02/02/2024]
Abstract
Precise control of cell division is essential for proper patterning and growth during the development of multicellular organisms. Coordination of formative divisions that generate new tissue patterns with proliferative divisions that promote growth is poorly understood. SHORTROOT (SHR) and SCARECROW (SCR) are transcription factors that are required for formative divisions in the stem cell niche of Arabidopsis roots1,2. Here we show that levels of SHR and SCR early in the cell cycle determine the orientation of the division plane, resulting in either formative or proliferative cell division. We used 4D quantitative, long-term and frequent (every 15 min for up to 48 h) light sheet and confocal microscopy to probe the dynamics of SHR and SCR in tandem within single cells of living roots. Directly controlling their dynamics with an SHR induction system enabled us to challenge an existing bistable model3 of the SHR-SCR gene-regulatory network and to identify key features that are essential for rescue of formative divisions in shr mutants. SHR and SCR kinetics do not align with the expected behaviour of a bistable system, and only low transient levels, present early in the cell cycle, are required for formative divisions. These results reveal an uncharacterized mechanism by which developmental regulators directly coordinate patterning and growth.
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Affiliation(s)
- Cara M Winter
- Department of Biology, Duke University, Durham, NC, USA.
- Howard Hughes Medical Institute, Duke University, Durham, NC, USA.
| | - Pablo Szekely
- Department of Biology, Duke University, Durham, NC, USA.
- Howard Hughes Medical Institute, Duke University, Durham, NC, USA.
| | | | | | - Raina Carter
- Department of Biology, Duke University, Durham, NC, USA
| | - Matthew Jones
- Translational Imaging Center, Bridge Institute, University of Southern California, Los Angeles, CA, USA
| | - Scott E Fraser
- Translational Imaging Center, Bridge Institute, University of Southern California, Los Angeles, CA, USA
| | - Thai V Truong
- Translational Imaging Center, Bridge Institute, University of Southern California, Los Angeles, CA, USA
| | - Philip N Benfey
- Department of Biology, Duke University, Durham, NC, USA
- Howard Hughes Medical Institute, Duke University, Durham, NC, USA
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170
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Yuan X, Wu D, Zhang D, He C, Wang Z, Xu W, Shou N, Fu K, Yue M, Zhang X, Shi Z. Combining microbiome and pseudotargeted metabolomics revealed the alleviative mechanism of Cupriavidus sp. WS2 on the cadmium toxicity in Vicia unijuga A.Br. Environ Pollut 2024; 342:123040. [PMID: 38016587 DOI: 10.1016/j.envpol.2023.123040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 11/06/2023] [Accepted: 11/23/2023] [Indexed: 11/30/2023]
Abstract
Cadmium (Cd) pollution is one of the most severe toxic metals pollution in grassland. Vicia unijuga (V. unijuga) A.Br. planted nearby the grassland farming are facing the risk of high Cd contamination. Here, we investigated the beneficial effects of a highly Cd tolerant rhizosphere bacterium, Cupriavidus sp. WS2, on Cd contaminated V. unijuga. Through plot experiments, we set up four groups of treatments: the control group (without WS2 or Cd), the Cd group (with only Cd addition), the WS2 group (with only WS2 addition), and the WS2/Cd group (with WS2 and Cd addition), and analyzed the changes in physiological indicators, rhizosphere microorganisms, and stem and leaf metabolites of V. unijuga. Results of physiological indicators indicated that Cupriavidus sp. WS2 had strong absorption and accumulation capacity of Cd, exogenous addition of strain WS2 remarkably decreased the Cd concentrations, and increased the plant heights, the biomass, the total protein concentrations, the chlorophyll contents and the photosynthetic rate in stems and leaves of V. unijuga under Cd stress. Cd treatment increased the abundance of Cd tolerant bacterial genera in rhizosphere microbiome, but these genera were down-regulated in the WS2/Cd group. Pseudotargeted metabolomic results showed that six common differential metabolites associated with antioxidant stress were increased after co-culture with WS2. In addition, WS2 activated the antioxidant system including glutathione (GSH) and catalase (CAT), reduced the contents of oxidative stress markers including malondialdehyde (MDA) and hydrogen peroxide (H2O2) in V. unijuga under Cd stress. Taken together, this study revealed that Cupriavidus sp.WS2 alleviated the toxicity of V. unijuga under Cd exposure by activating the antioxidant system, increasing the antioxidant metabolites, and reducing the oxidative stress markers.
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Affiliation(s)
- Xuefeng Yuan
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Dandan Wu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Dingguo Zhang
- College of biological and Geographical Sciences, Yili Normal University, Yining, 835000, China
| | - Chunyu He
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Zilong Wang
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Wenqian Xu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Na Shou
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Keyi Fu
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Mingyuan Yue
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China
| | - Xin Zhang
- Inspection center of Wensu County, Xinjiang, 843100, China
| | - Zunji Shi
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, 730000, China.
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171
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Nasr Esfahani M, Sonnewald U. Unlocking dynamic root phenotypes for simultaneous enhancement of water and phosphorus uptake. Plant Physiol Biochem 2024; 207:108386. [PMID: 38280257 DOI: 10.1016/j.plaphy.2024.108386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/08/2024] [Accepted: 01/17/2024] [Indexed: 01/29/2024]
Abstract
Phosphorus (P) and water are crucial for plant growth, but their availability is challenged by climate change, leading to reduced crop production and global food security. In many agricultural soils, crop productivity is confronted by both water and P limitations. The diminished soil moisture decreases available P due to reduced P diffusion, and inadequate P availability diminishes tissue water status through modifications in stomatal conductance and a decrease in root hydraulic conductance. P and water display contrasting distributions in the soil, with P being concentrated in the topsoil and water in the subsoil. Plants adapt to water- and P-limited environments by efficiently exploring localized resource hotspots of P and water through the adaptation of their root system. Thus, developing cultivars with improved root architecture is crucial for accessing and utilizing P and water from arid and P-deficient soils. To meet this goal, breeding towards multiple advantageous root traits can lead to better cultivars for water- and P-limited environments. This review discusses the interplay of P and water availability and highlights specific root traits that enhance the exploration and exploitation of optimal resource-rich soil strata while reducing metabolic costs. We propose root ideotype models, including 'topsoil foraging', 'subsoil foraging', and 'topsoil/subsoil foraging' for maize (monocot) and common bean (dicot). These models integrate beneficial root traits and guide the development of water- and P-efficient cultivars for challenging environments.
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Affiliation(s)
- Maryam Nasr Esfahani
- Department of Biology, Chair of Biochemistry, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany.
| | - Uwe Sonnewald
- Department of Biology, Chair of Biochemistry, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany.
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172
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Hu F, Fang D, Zhang W, Dong K, Ye Z, Cao J. Lateral root primordium: Formation, influencing factors and regulation. Plant Physiol Biochem 2024; 207:108429. [PMID: 38359556 DOI: 10.1016/j.plaphy.2024.108429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 12/18/2023] [Accepted: 02/05/2024] [Indexed: 02/17/2024]
Abstract
Roots are the primary determinants of water and nutrient uptake by plants. The structure of roots is largely determined by the repeated formation of new lateral roots (LR). A new lateral root primordium (LRP) is formed between the beginning and appearance of LR, which defines the organization and function of LR. Therefore, proper LRP morphogenesis is a crucial process for lateral root formation. The development of LRP is regulated by multiple factors, including hormone and environmental signals. Roots integrate signals and regulate growth and development. At the molecular level, many genes regulate the growth and development of root organs to ensure stable development plans, while also being influenced by various environmental factors. To gain a better understanding of the LRP formation and its influencing factors, this study summarizes previous research. The cell cycle involved in LRP formation, as well as the roles of ROS, auxin, other auxin-related plant hormones, and genetic regulation, are discussed in detail. Additionally, the effects of gravity, mechanical stress, and cell death on LRP formation are explored. Throughout the text unanswered or poorly understood questions are identified to guide future research in this area.
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Affiliation(s)
- Fei Hu
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | - Da Fang
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | - Weimeng Zhang
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | - Kui Dong
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | - Ziyi Ye
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, Jiangsu, China
| | - Jun Cao
- School of Life Sciences, Jiangsu University, Zhenjiang, 212013, Jiangsu, China.
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173
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Jensen CNG, Pang JKY, Hahn CM, Gottardi M, Husted S, Moelbak L, Kovács ÁT, Fimognari L, Schulz A. Differential influence of Bacillus subtilis strains on Arabidopsis root architecture through common and distinct plant hormonal pathways. Plant Sci 2024; 339:111936. [PMID: 38042415 DOI: 10.1016/j.plantsci.2023.111936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 11/28/2023] [Indexed: 12/04/2023]
Abstract
Plant growth-promoting microbes (PGPM) can enhance crop yield and health, but knowledge of their mode-of-action is limited. We studied the influence of two Bacillus subtilis strains, the natural isolate ALC_02 and the domesticated 168 Gö, on Arabidopsis and hypothesized that they modify the root architecture by modulating hormone transport or signaling. Both bacteria promoted increase of shoot and root surface area in vitro, but through different root anatomical traits. Mutant plants deficient in auxin transport or signaling responded less to the bacterial strains than the wild-type, and application of the auxin transport inhibitor NPA strongly reduced the influence of the strains. Both bacteria produced auxin and enhanced shoot auxin levels in DR5::GUS reporter plants. Accordingly, most of the beneficial effects of the strains were dependent on functional auxin transport and signaling, while only 168 Gö depended on functional ethylene signaling. As expected, only ALC_02 stimulated plant growth in soil, unlike 168 Gö that was previously reported to have reduced biofilms. Collectively, the results highlight that B. subtilis strains can have strikingly different plant growth-promoting properties, dependent on what experimental setup they are tested in, and the importance of choosing the right PGPM for a desired root phenotype.
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Affiliation(s)
- Camilla Niketa Gadomska Jensen
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark; Plant Health Innovation, Chr-Hansen A/S, Taastrup, Denmark
| | - Janet Ka Yan Pang
- Bacterial Interactions and Evolution Group, DTU Bioengineering, Technical University of Denmark, Kgs. Lyngby, Denmark
| | - Charlotte Marie Hahn
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | | | - Søren Husted
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Lars Moelbak
- Plant Health Innovation, Chr-Hansen A/S, Taastrup, Denmark
| | - Ákos T Kovács
- Bacterial Interactions and Evolution Group, DTU Bioengineering, Technical University of Denmark, Kgs. Lyngby, Denmark
| | | | - Alexander Schulz
- Department of Plant and Environmental Sciences, University of Copenhagen, Frederiksberg, Denmark.
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174
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Wang P, Yamaji N, Mitani-Ueno N, Ge J, Ma JF. Knockout of a rice K5.2 gene increases Ca accumulation in the grain. J Integr Plant Biol 2024; 66:252-264. [PMID: 38018375 DOI: 10.1111/jipb.13587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 11/30/2023]
Abstract
Rice is a staple food for half of the world's population, but it is a poor dietary source of calcium (Ca) due to the low concentration. It is an important issue to boost Ca concentration in this grain to improve Ca deficiency risk, but the mechanisms underlying Ca accumulation are poorly understood. Here, we obtained a rice (Oryza sativa) mutant with high shoot Ca accumulation. The mutant exhibited 26%-53% higher Ca in shoots than did wild-type rice (WT) at different Ca supplies. Ca concentration in the xylem sap was 36% higher in the mutant than in the WT. There was no difference in agronomic traits between the WT and mutant, but the mutant showed 25% higher Ca in the polished grain compared with the WT. Map-based cloning combined with a complementation test revealed that the mutant phenotype was caused by an 18-bp deletion of a gene, OsK5.2, belonging to the Shaker-like K+ channel family. OsK5.2 was highly expressed in the mature region of the roots and its expression in the roots was not affected by Ca levels, but upregulated by low K. Immunostaining showed that OsK5.2 was mainly expressed in the pericycle of the roots. Taken together, our results revealed a novel role for OsK5.2 in Ca translocation in rice, and will be a good target for Ca biofortification in rice.
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Affiliation(s)
- Peitong Wang
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
| | - Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
| | - Namiki Mitani-Ueno
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
| | - Jun Ge
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
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175
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Xie J, Cao B, Xu K. Uncovering the dominant role of root lignin accumulation in silicon-induced resistance to drought in tomato. Int J Biol Macromol 2024; 259:129075. [PMID: 38161004 DOI: 10.1016/j.ijbiomac.2023.129075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/04/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
The role of lignin accumulation in silicon-induced resistance has not been fully elucidated. Based on the finding that the root cell wall is protected by silicon, this study explored the role of lignin accumulation in silicon-induced drought resistance in tomato. The decreased silicon concentration of the root confirmed the dominant role of lignin accumulation in silicon-induced drought resistance. The lignin monomer content in the root was enhanced by silicon, and was accompanied by the enhancement of drought resistance. Histochemical and transcriptional analyses of lignin showed that lignin accumulation was promoted by silicon under drought stress. In addition, in the root zone, silicon-induced lignin accumulation increased as the distance from the root tip increased under drought stress. Surprisingly, the Dwarf gene was upregulated by silicon in the roots. Micro Tom Dwarf gene mutation and Micro Tom-d + Dwarf gene functional complementation were further used to confirm that Dwarf regulates the spatial accuracy of SHR expression in the root. Therefore, root lignin accumulation plays a dominant role in silicon-induced drought resistance in tomato and the regulation of spatial accuracy of root lignification by silicon under drought stress is through the BR pathway, thereby avoiding the inhibition of root growth caused by root lignification.
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Affiliation(s)
- Jiaqi Xie
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, China
| | - Bili Cao
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, China.
| | - Kun Xu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai-An, Shandong 271018, China; Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, China.
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176
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Cao H, Liu Z, Guo J, Jia Z, Shi Y, Kang K, Peng W, Wang Z, Chen L, Neuhaeuser B, Wang Y, Liu X, Hao D, Yuan L. ZmNRT1.1B (ZmNPF6.6) determines nitrogen use efficiency via regulation of nitrate transport and signalling in maize. Plant Biotechnol J 2024; 22:316-329. [PMID: 37786281 PMCID: PMC10826987 DOI: 10.1111/pbi.14185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 09/11/2023] [Accepted: 09/15/2023] [Indexed: 10/04/2023]
Abstract
Nitrate (NO3 - ) is crucial for optimal plant growth and development and often limits crop productivity under low availability. In comparison with model plant Arabidopsis, the molecular mechanisms underlying NO3 - acquisition and utilization remain largely unclear in maize. In particular, only a few genes have been exploited to improve nitrogen use efficiency (NUE). Here, we demonstrated that NO3 - -inducible ZmNRT1.1B (ZmNPF6.6) positively regulated NO3 - -dependent growth and NUE in maize. We showed that the tandem duplicated proteoform ZmNRT1.1C is irrelevant to maize seedling growth under NO3 - supply; however, the loss of function of ZmNRT1.1B significantly weakened plant growth under adequate NO3 - supply under both hydroponic and field conditions. The 15 N-labelled NO3 - absorption assay indicated that ZmNRT1.1B mediated the high-affinity NO3 - -transport and root-to-shoot NO3 - translocation. Transcriptome analysis further showed, upon NO3 - supply, ZmNRT1.1B promotes cytoplasmic-to-nuclear shuttling of ZmNLP3.1 (ZmNLP8), which co-regulates the expression of genes involved in NO3 - response, cytokinin biosynthesis and carbon metabolism. Remarkably, overexpression of ZmNRT1.1B in modern maize hybrids improved grain yield under N-limiting fields. Taken together, our study revealed a crucial role of ZmNRT1.1B in high-affinity NO3 - transport and signalling and offers valuable genetic resource for breeding N use efficient high-yield cultivars.
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Affiliation(s)
- Huairong Cao
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
| | - Zhi Liu
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
| | - Jia Guo
- Key Laboratory for Agricultural Biotechnology of Jilin ProvincialInstitute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences (JAAS)JilinChina
| | - Zhongtao Jia
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
| | - Yandong Shi
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
| | - Kai Kang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
| | - Wushuang Peng
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
| | - Zhangkui Wang
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
| | - Limei Chen
- State Key Laboratory of Plant Environmental Resilience, College of Biological Sciences, Center for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijingChina
| | - Benjamin Neuhaeuser
- Department of Nutritional Crop Physiology, Institute of Crop ScienceUniversity of HohenheimStuttgartGermany
| | - Yong Wang
- National Key Laboratory of Wheat Improvement, College of Life SciencesShandong Agricultural UniversityTai'anShandongChina
| | - Xiangguo Liu
- Key Laboratory for Agricultural Biotechnology of Jilin ProvincialInstitute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences (JAAS)JilinChina
| | - Dongyun Hao
- Key Laboratory for Agricultural Biotechnology of Jilin ProvincialInstitute of Agricultural Biotechnology, Jilin Academy of Agricultural Sciences (JAAS)JilinChina
| | - Lixing Yuan
- State Key Laboratory of Nutrient Use and Management, College of Resources and Environmental Sciences, National Academy of Agriculture Green DevelopmentChina Agricultural UniversityBeijingChina
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177
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Amo J, Martínez-Martínez A, Martínez V, Rubio F, Nieves-Cordones M. Relevance of the SlCIPK23 kinase in Na + uptake and root morphology in K +-starved tomato plants. Plant Physiol Biochem 2024; 207:108373. [PMID: 38266564 DOI: 10.1016/j.plaphy.2024.108373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 01/09/2024] [Accepted: 01/12/2024] [Indexed: 01/26/2024]
Abstract
The beneficial effects of Na+ as a substitute for K+ have been well-documented at the physiological level. However, the transport systems and regulatory mechanisms that allow Na+ acquisition under K+ deficiency remain poorly understood in the majority of land plants. In tomato, SlCIPK23 kinase was involved in Na+ accumulation in K+-starved plants, in addition to activating the LKT1 K+ channel and the K+ transporter SlHAK5. We used the central role of SlCIPK23 in K+ and Na+ acquisition to study which molecular entities mediate Na+ uptake with knockout tomato mutants and expression in heterologous systems. Two main pathways for Na+ uptake were deduced in tomato plants: an NH4+-sensitive pathway dependent on SlCIPK23, and a second one sensitive to Ba2+, Ca2+, La3+, and Li+. The addition of Na+ (10 mM) to lkt1, slhak5, or slcipk23 mutant KO lines produced interesting changes in root morphology. In particular, the roots of slcipk23 plants were longer and lighter than those of the WT under K+-deficient conditions and this effect was reversed by the addition of 10 mM Na+. These results provide a stimulating perspective for the study of the beneficial effects of Na+ in crops.
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Affiliation(s)
- Jesús Amo
- Departamento de Nutrición Vegetal, Centro de Edafología y Biología Aplicada Del Segura- CSIC, Murcia, Spain
| | - Almudena Martínez-Martínez
- Departamento de Nutrición Vegetal, Centro de Edafología y Biología Aplicada Del Segura- CSIC, Murcia, Spain
| | - Vicente Martínez
- Departamento de Nutrición Vegetal, Centro de Edafología y Biología Aplicada Del Segura- CSIC, Murcia, Spain
| | - Francisco Rubio
- Departamento de Nutrición Vegetal, Centro de Edafología y Biología Aplicada Del Segura- CSIC, Murcia, Spain
| | - Manuel Nieves-Cordones
- Departamento de Nutrición Vegetal, Centro de Edafología y Biología Aplicada Del Segura- CSIC, Murcia, Spain.
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178
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Sui X, Sun X, Liu S, Li L, Xin Z, Li X. Nitrate reduces copper toxicity by preventing oxidative stress and inhibiting copper translocation from roots to shoots in Liriodendron Chinense. Environ Sci Pollut Res Int 2024; 31:15946-15957. [PMID: 38308781 DOI: 10.1007/s11356-024-32053-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 01/14/2024] [Indexed: 02/05/2024]
Abstract
Nitrogen forms can affect metal accumulation in plants and tolerance to metals, but a few published studies on the effects on Cu toxicity and Cu accumulation in plants are scarce. Thus, the objective of this study was to evaluate the responses of Liriodendron chinense to different nitrogen forms, by the oxidative stress, antioxidant enzymes system, GSH-AsA cycle, Cu uptake, translocation, and accumulation under Cu stress. We found that Cu-induced growth inhibiting was alleviated by added exclusive NO3--N. Adding N as NH4+-N with or without NO3--N was aggravated as evidenced by significantly elevated malonaldehyde (MDA) and hydrogen peroxide (H2O2) compared to N-Null. Cu exposure and adding NH4+-N inhibited superoxide dismutase activity, but remarkably stimulated the activities of catalase and peroxidase, the efficiency of glutathione-ascorbate (GSH-AsA) cycle, and the activity of glutathione reductase and nitrate reductase, with respect to the control. However, adding exclusive NO3--N progressively restored the alteration of antioxidant to prevent Cu-induced oxidative stress. Additionally, adding exclusive NO3--N significantly promoted the Cu uptake and accumulation in roots, but reduced Cu concentration in leaves, accompanied by the inhibited Cu translocation factor from roots to shoots by 36.7%, when compared with N-Null. Overall, adding NO3--N alleviated its Cu toxicity by preventing Cu-induced oxidative stress and inhibiting Cu translocation from roots to shoots, which provides an effective strategy for phytostabilization in Cu-contaminated lands.
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Affiliation(s)
- Xiuyu Sui
- Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Microbes, Jiangxi Academy of Sciences, Nanchang, 330096, China
- College of Forestry, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Xiaoyan Sun
- Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Microbes, Jiangxi Academy of Sciences, Nanchang, 330096, China.
- College of Forestry, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Shujuan Liu
- Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Liang Li
- Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Microbes, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Zaijun Xin
- Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Microbes, Jiangxi Academy of Sciences, Nanchang, 330096, China
| | - Xiaohui Li
- Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Microbes, Jiangxi Academy of Sciences, Nanchang, 330096, China
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179
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Singh T, Bisht N, Ansari MM, Mishra SK, Chauhan PS. Paenibacillus lentimorbus alleviates nutrient deficiency-induced stress in Zea mays by modulating root system architecture, auxin signaling, and metabolic pathways. Plant Cell Rep 2024; 43:49. [PMID: 38302760 DOI: 10.1007/s00299-023-03133-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/14/2023] [Indexed: 02/03/2024]
Abstract
KEY MESSAGE Paenibacillus lentimorbus reprograms auxin signaling and metabolic pathways for modulating root system architecture to mitigate nutrient deficiency in maize crops. The arable land across the world is having deficiency and disproportionate nutrients, limiting crop productivity. In this study, the potential of plant growth-promoting rhizobacteria (PGPR) viz., Pseudomonas putida, Paenibacillus lentimorbus, and their consortium was explored for growth promotion in maize (Zea mays) under nutrient-deficient conditions. PGPR inoculation improved the overall health of plants under nutrient-deficient conditions. The PGPR inoculation significantly improved the root system architecture and also induced changes in root cortical aerenchyma. Based on plant growth and physiological parameters inoculation with P. lentimorbus performed better as compared to P. putida, consortium, and uninoculated control. Furthermore, expression of auxin signaling (rum1, rul1, lrp1, rtcs, rtcl) and root hair development (rth)-related genes modulated the root development process to improve nutrient acquisition and tolerance to nutrient-deficient conditions in P. lentimorbus inoculated maize plants. Further, GC-MS analysis indicated the involvement of metabolites including carbohydrates and organic acids due to the interaction between maize roots and P. lentimorbus under nutrient-deficient conditions. These findings affirm that P. lentimorbus enhance overall plant growth by modulating the root system of maize to provide better tolerance to nutrient-deficient condition.
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Affiliation(s)
- Tanya Singh
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Nikita Bisht
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
| | - Mohd Mogees Ansari
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shashank Kumar Mishra
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India
| | - Puneet Singh Chauhan
- CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow, 226001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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180
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Khan GA, Dutta A, van de Meene A, Frandsen KEH, Ogden M, Whelan J, Persson S. Phosphate starvation regulates cellulose synthesis to modify root growth. Plant Physiol 2024; 194:1204-1217. [PMID: 37823515 PMCID: PMC10828208 DOI: 10.1093/plphys/kiad543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 09/15/2023] [Accepted: 09/24/2023] [Indexed: 10/13/2023]
Abstract
In the model plant Arabidopsis (Arabidopsis thaliana), the absence of the essential macro-nutrient phosphate reduces primary root growth through decreased cell division and elongation, requiring alterations to the polysaccharide-rich cell wall surrounding the cells. Despite its importance, the regulation of cell wall synthesis in response to low phosphate levels is not well understood. In this study, we show that plants increase cellulose synthesis in roots under limiting phosphate conditions, which leads to changes in the thickness and structure of the cell wall. These changes contribute to the reduced growth of primary roots in low-phosphate conditions. Furthermore, we found that the cellulose synthase complex (CSC) activity at the plasma membrane increases during phosphate deficiency. Moreover, we show that this increase in the activity of the CSC is likely due to alterations in the phosphorylation status of cellulose synthases in low-phosphate conditions. Specifically, phosphorylation of CELLULOSE SYNTHASE 1 (CESA1) at the S688 site decreases in low-phosphate conditions. Phosphomimic versions of CESA1 with an S688E mutation showed significantly reduced cellulose induction and primary root length changes in low-phosphate conditions. Protein structure modeling suggests that the phosphorylation status of S688 in CESA1 could play a role in stabilizing and activating the CSC. This mechanistic understanding of root growth regulation under limiting phosphate conditions provides potential strategies for changing root responses to soil phosphate content.
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Affiliation(s)
- Ghazanfar Abbas Khan
- Department of Animal, Plant and Soil Sciences, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC 3086, Australia
| | - Arka Dutta
- Department of Animal, Plant and Soil Sciences, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC 3086, Australia
| | | | - Kristian E H Frandsen
- Copenhagen Plant Science Center, Department of Plant & Environmental Sciences, University of Copenhagen, Frederiksberg C 1871, Denmark
| | - Michael Ogden
- Copenhagen Plant Science Center, Department of Plant & Environmental Sciences, University of Copenhagen, Frederiksberg C 1871, Denmark
| | - James Whelan
- Department of Animal, Plant and Soil Sciences, School of Agriculture, Biomedicine and Environment, La Trobe University, Bundoora, VIC 3086, Australia
- College of Life Science, Zhejiang University, Hangzhou 310058, China
| | - Staffan Persson
- School of Biosciences, University of Melbourne, Parkville, VIC 3010, Australia
- Copenhagen Plant Science Center, Department of Plant & Environmental Sciences, University of Copenhagen, Frederiksberg C 1871, Denmark
- Joint International Research Laboratory of Metabolic and Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 20040, China
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181
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Yamauchi T, Tanaka A, Nakazono M, Inukai Y. Age-dependent analysis dissects the stepwise control of auxin-mediated lateral root development in rice. Plant Physiol 2024; 194:819-831. [PMID: 37831077 PMCID: PMC10828202 DOI: 10.1093/plphys/kiad548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 09/27/2023] [Accepted: 10/12/2023] [Indexed: 10/14/2023]
Abstract
As root elongation rates are different among each individual root, the distance from the root apices does not always reflect the age of root cells. Thus, methods for correcting variations in elongation rates are needed to accurately evaluate the root developmental process. Here, we show that modeling-based age-dependent analysis is effective for dissecting stepwise lateral root (LR) development in rice (Oryza sativa). First, we measured the increases in LR and LR primordium (LRP) numbers, diameters, and lengths in wild type and an auxin-signaling-defective mutant, which has a faster main (crown) root elongation rate caused by the mutation in the gene encoding AUXIN/INDOLE-3-ACETIC ACID protein 13 (IAA13). The longitudinal patterns of these parameters were fitted by the appropriate models and the age-dependent patterns were identified using the root elongation rates. As a result, we found that LR and LRP numbers and lengths were reduced in iaa13. We also found that the duration of the increases in LR and LRP diameters were prolonged in iaa13. Subsequent age-dependent comparisons with gene expression patterns suggest that AUXIN RESPONSE FACTOR11 (ARF11), the homolog of MONOPTEROS (MP)/ARF5 in Arabidopsis (Arabidopsis thaliana), is involved in the initiation and growth of LR(P). Indeed, the arf11 mutant showed a reduction of LR and LRP numbers and lengths. Our results also suggest that PINOID-dependent rootward-to-shootward shift of auxin flux contributes to the increase in LR and LRP diameters. Together, we propose that modeling-based age-dependent analysis is useful for root developmental studies by enabling accurate evaluation of root traits' expression.
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Affiliation(s)
- Takaki Yamauchi
- Bioscience and Biotechnology Center, Nagoya University, Nagoya 464-8601, Japan
| | - Akihiro Tanaka
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Mikio Nakazono
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan
- School of Agriculture and Environment, The University of Western Australia, Crawley, WA 6009, Australia
| | - Yoshiaki Inukai
- International Center for Research and Education in Agriculture, Nagoya University, Nagoya 464-8601, Japan
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182
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Yang H, Zhang X, Yan C, Zhou R, Li J, Liu S, Wang Z, Zhou J, Zhu L, Jia H. Novel Insights into the Promoted Accumulation of Nitro-Polycyclic Aromatic Hydrocarbons in the Roots of Legume Plants. Environ Sci Technol 2024; 58:2058-2068. [PMID: 38230546 DOI: 10.1021/acs.est.3c08255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Substituted polycyclic aromatic hydrocarbons (sub-PAHs) are receiving increased attention due to their high toxicity and ubiquitous presence. However, the accumulation behaviors of sub-PAHs in crop roots remain unclear. In this study, the accumulation mechanism of sub-PAHs in crop roots was systematically disclosed by hydroponic experiments from the perspectives of utilization, uptake, and elimination. The obtained results showed an interesting phenomenon that despite not having the strongest hydrophobicity among the five sub-PAHs, nitro-PAHs (including 9-nitroanthracene and 1-nitropyrene) displayed the strongest accumulation potential in the roots of legume plants, including mung bean and soybean. The nitrogen-deficient experiments, inhibitor experiments, and transcriptomics analysis reveal that nitro-PAHs could be utilized by legumes as a nitrogen source, thus being significantly absorbed by active transport, which relies on amino acid transporters driven by H+-ATPase. Molecular docking simulation further demonstrates that the nitro group is a significant determinant of interaction with an amino acid transporter. Moreover, the depuration experiments indicate that the nitro-PAHs may enter the root cells, further slowing their elimination rates and enhancing the accumulation potential in legume roots. Our results shed light on a previously unappreciated mechanism for root accumulation of sub-PAHs, which may affect their biogeochemical processes in soils.
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Affiliation(s)
- Huiqiang Yang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Xianglei Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Chenghe Yan
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Run Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Jiahui Li
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Siqian Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Zhiqiang Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Jian Zhou
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
| | - Lingyan Zhu
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China
| | - Hanzhong Jia
- College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China
- Key Laboratory of Low-Carbon Green Agriculture in Northwestern China, Ministry of Agriculture and Rural Affairs, Yangling 712100, China
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183
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Vega-Arroy JD, Herrera-Estrella A, Ovando-Vázquez C, Casas-Flores S. Inferring co-expression networks of Arabidopsis thaliana genes during their interaction with Trichoderma spp. Sci Rep 2024; 14:2466. [PMID: 38291044 PMCID: PMC10827721 DOI: 10.1038/s41598-023-48332-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 11/25/2023] [Indexed: 02/01/2024] Open
Abstract
Fungi of the Trichoderma genus are called "biostimulants" because they promote plant growth and development and induce disease resistance. We used conventional transcriptome and gene co-expression analyses to understand the molecular response of the plant Arabidopsis thaliana to inoculation with Trichoderma atroviride or Trichoderma virens. The transcriptional landscape of the plant during the interaction with these fungi showed a reduction in functions such as reactive oxygen species production, defense mechanisms against pathogens, and hormone signaling. T. virens, as opposed to T. atroviride, was more effective at downregulating genes related to terpenoid metabolism, root development, and chemical homeostasis. Through gene co-expression analysis, we found functional gene modules that closely link plant defense with hypoxia. Notably, we found a transcription factor (locus AT2G47520) with two functional domains of interest: a DNA-binding domain and an N-terminal cysteine needed for protein stability under hypoxia. We hypothesize that the transcription factor can bind to the promoter sequence of the GCC-box that is connected to pathogenesis by positioned weight matrix analysis.
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Affiliation(s)
- Javier-David Vega-Arroy
- IPICYT, División de Biología Molecular, Laboratorio de Genómica Funcional y Comparativa, Camino a la Presa San José 2055. Col. Lomas 4 Sección, 78216, San Luis Potosí, SLP, Mexico
- IPICYT, CONAHCYT, Centro Nacional de Supercomputo, Laboratorio de Inteligencia Artificial y Bioinformática, Camino a la Presa San José 2055. Col. Lomas 4 sección, 78216, San Luis Potosí, SLP, Mexico
| | - Alfredo Herrera-Estrella
- Centro de Investigación y de Estudios Avanzados del IPN, unidad de Genómica Avanzada-Langebio, Libramiento Norte carretera Irapuato-León km 9.6, 36824, Irapuato, GTO, Mexico
| | - Cesaré Ovando-Vázquez
- IPICYT, CONAHCYT, Centro Nacional de Supercomputo, Laboratorio de Inteligencia Artificial y Bioinformática, Camino a la Presa San José 2055. Col. Lomas 4 sección, 78216, San Luis Potosí, SLP, Mexico.
| | - Sergio Casas-Flores
- IPICYT, División de Biología Molecular, Laboratorio de Genómica Funcional y Comparativa, Camino a la Presa San José 2055. Col. Lomas 4 Sección, 78216, San Luis Potosí, SLP, Mexico.
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184
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Zhang B, Xin B, Sun X, Chao D, Zheng H, Peng L, Chen X, Zhang L, Yu J, Ma D, Xia J. Small peptide signaling via OsCIF1/2 mediates Casparian strip formation at the root endodermal and nonendodermal cell layers in rice. Plant Cell 2024; 36:383-403. [PMID: 37847118 PMCID: PMC10827571 DOI: 10.1093/plcell/koad269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/15/2023] [Accepted: 10/16/2023] [Indexed: 10/18/2023]
Abstract
The Casparian strip (CS) is a ring-like lignin structure deposited between endodermal cells that forms an apoplastic barrier to control the selective uptake of nutrients in vascular plants. However, the molecular mechanism of CS formation in rice (Oryza sativa), which possesses one CS each in the endodermis and exodermis, is relatively unknown. Here, we functionally characterized CS INTEGRITY FACTOR1 (OsCIF1a, OsCIF1b), OsCIF2, and SCHENGEN3 (OsSGN3a, OsSGN3b) in rice. OsCIF1s and OsCIF2 were mainly expressed in the stele, while OsSGN3s localized around the CS at the endodermis. Knockout of all three OsCIFs or both OsSGN3s resulted in a discontinuous CS and a dramatic reduction in compensatory (less localized) lignification and suberization at the endodermis. By contrast, ectopic overexpression of OsCIF1 or OsCIF2 induced CS formation as well as overlignification and oversuberization at single or double cortical cell layers adjacent to the endodermis. Ectopic co-overexpression of OsCIF1 and SHORTROOT1 (OsSHR1) induced the formation of more CS-like structures at multiple cortical cell layers. Transcriptome analysis identified 112 downstream genes modulated by the OsCIF1/2-OsSGN3 signaling pathway, which is involved in CS formation and activation of the compensatory machinery in native endodermis and nonnative endodermis-like cell layers. Our results provide important insights into the molecular mechanism of CIF-mediated CS formation at the root endodermal and nonendodermal cell layers.
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Affiliation(s)
- Baolei Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Boning Xin
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Xiaoqian Sun
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Dong Chao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Huawei Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Liyun Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Xingxiang Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Lin Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Jinyu Yu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Dan Ma
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
| | - Jixing Xia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning 530004, China
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185
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Eze MO, Amuji CF. Elucidating the significant roles of root exudates in organic pollutant biotransformation within the rhizosphere. Sci Rep 2024; 14:2359. [PMID: 38286879 PMCID: PMC10824751 DOI: 10.1038/s41598-024-53027-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 01/26/2024] [Indexed: 01/31/2024] Open
Abstract
Biotransformation of organic pollutants is crucial for the dissipation of environmental pollutants. While the roles of microorganisms have been extensively studied, the significant contribution of various root exudates are still not very well understood. Through plant growth experiment, coupled with gas and liquid chromatography-mass spectrometry methods, this study examined the effect of the presence of M. sativa on microbial-associated biochemical transformation of petroleum hydrocarbons. The results of this study revealed that the concentration of exudates within the soil matrix is a function of proximity to root surfaces. Similarly, biodegradation was found to correlate with distance from roots, ranging from ≥ 90% within the rhizosphere to < 50% in bulk soil and unplanted control soil. Most importantly, for the first time in a study of an entire petroleum distillate, this study revealed a statistically significant negative correlation between root exudate concentration and residual total petroleum hydrocarbons. While not all the compounds that may influence biodegradation are derived from roots, the results of this study show that the presence of plant can significantly influence biodegradation of hydrocarbon pollutants through such root exudation as organic acids, amino acids, soluble sugars and terpenoids. Therefore, root exudates, including secondary metabolites, offer great prospects for biotechnological applications in the remediation of organic pollutants, including recalcitrant ones.
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Affiliation(s)
- Michael O Eze
- Department of Chemistry, and Metabolomics and Environmental Toxicology Laboratory, Missouri University of Science and Technology, Rolla, MO, 65409, USA.
- Centre for Research in Energy and Environment, Missouri University of Science and Technology, Rolla, MO, 65409, USA.
| | - Chinedu F Amuji
- Department of Crop Science, University of Nigeria, Nsukka, Enugu State, Nigeria
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186
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Bell CA, Magkourilou E, Ault JR, Urwin PE, Field KJ. Phytophagy impacts the quality and quantity of plant carbon resources acquired by mutualistic arbuscular mycorrhizal fungi. Nat Commun 2024; 15:801. [PMID: 38280873 PMCID: PMC10821877 DOI: 10.1038/s41467-024-45026-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/12/2024] [Indexed: 01/29/2024] Open
Abstract
Arbuscular mycorrhizal (AM) fungi associate with the roots of many plant species, enhancing their hosts access to soil nutrients whilst obtaining their carbon supply directly as photosynthates. AM fungi often face competition for plant carbon from other organisms. The mechanisms by which plants prioritise carbon allocation to mutualistic AM fungi over parasitic symbionts remain poorly understood. Here, we show that host potato plants (Solanum tuberosum cv. Désirée) selectively allocate carbon resources to tissues interacting with AM fungi rather than those interacting with phytophagous parasites (the nematode Globodera pallida). We found that plants reduce the supply of hexoses but maintain the flow of plant-derived fatty acids to AM fungi when concurrently interacting with parasites. Transcriptomic analysis suggest that plants prioritise carbon transfer to AM fungi by maintaining expression of fatty acid biosynthesis and transportation pathways, whilst decreasing the expression of mycorrhizal-induced hexose transporters. We also report similar findings from a different plant host species (Medicago truncatula) and phytophagous pest (the aphid Myzus persicae). These findings suggest a general mechanism of plant-driven resource allocation in scenarios involving multiple symbionts.
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Affiliation(s)
- C A Bell
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, United Kingdom.
| | - E Magkourilou
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, United Kingdom
- Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Sheffield, S10 2TN, United Kingdom
| | - J R Ault
- School of Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - P E Urwin
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - K J Field
- Plants, Photosynthesis and Soil, School of Biosciences, University of Sheffield, Sheffield, S10 2TN, United Kingdom
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187
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Ivanov S, Harrison MJ. Receptor-associated kinases control the lipid provisioning program in plant-fungal symbiosis. Science 2024; 383:443-448. [PMID: 38271524 DOI: 10.1126/science.ade1124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 12/19/2023] [Indexed: 01/27/2024]
Abstract
The mutualistic association between plants and arbuscular mycorrhizal (AM) fungi requires intracellular accommodation of the fungal symbiont and maintenance by means of lipid provisioning. Symbiosis signaling through lysin motif (LysM) receptor-like kinases and a leucine-rich repeat receptor-like kinase DOES NOT MAKE INFECTIONS 2 (DMI2) activates transcriptional programs that underlie fungal passage through the epidermis and accommodation in cortical cells. We show that two Medicago truncatula cortical cell-specific, membrane-bound proteins of a CYCLIN-DEPENDENT KINASE-LIKE (CKL) family associate with, and are phosphorylation substrates of, DMI2 and a subset of the LysM receptor kinases. CKL1 and CKL2 are required for AM symbiosis and control expression of transcription factors that regulate part of the lipid provisioning program. Onset of lipid provisioning is coupled with arbuscule branching and with the REDUCED ARBUSCULAR MYCORRHIZA 1 (RAM1) regulon for complete endosymbiont accommodation.
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188
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Tian Y, Yang W, Wan S, Fang S. Insights into the Hormone-Regulating Mechanism of Adventitious Root Formation in Softwood Cuttings of Cyclocarya paliurus and Optimization of the Hormone-Based Formula for Promoting Rooting. Int J Mol Sci 2024; 25:1343. [PMID: 38279343 PMCID: PMC10816064 DOI: 10.3390/ijms25021343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/13/2024] [Accepted: 01/15/2024] [Indexed: 01/28/2024] Open
Abstract
Adventitious root (AR) formation is vital for successful cutting propagation in plants, while the dynamic regulation of phytohormones is viewed as one of the most important factors affecting AR formation. Cyclocarya paliurus, a hard-to-root plant, is faced with the bottleneck of cloning its superior varieties in practice. In this study, ten treatments were designed to figure out the best hormone-based formula for promoting AR formation in softwood cuttings and explore their hormone-regulating mechanisms. Both the rooting process and the rooting parameters of the softwood cuttings were significantly affected by different hormone-based formulas (p < 0.05), while the greatest rooting rate (93%) and root quality index were achieved in the H3 formula (SR3:IR3 = 1:1). Significant differences in the measured phytohormone concentrations, as well as in their ratios, were detected among the cuttings sampled at various AR formation stages (p < 0.05), whereas the dynamics for each phytohormone varied greatly during AR formation. The transcriptome analysis showed 12,028 differentially expressed genes (DEGs) identified during the rooting process of C. paliurus cuttings, while the KEGG enrichment analysis indicated that a total of 20 KEGG terms were significantly enriched in all the comparison samples, with 253 DEGs detected in signal transduction. Furthermore, 19 genes with vital functions in regulating the hormone signaling pathway were identified by means of a WGCNA analysis. Our results not only optimize a hormone-based formula for improving the rooting of C. paliurus cuttings but also provide an insight into the hormonal regulatory network during AR formation in softwood C. paliurus cuttings.
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Affiliation(s)
- Yuan Tian
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China; (Y.T.); (W.Y.); (S.W.)
| | - Wanxia Yang
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China; (Y.T.); (W.Y.); (S.W.)
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
| | - Shiying Wan
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China; (Y.T.); (W.Y.); (S.W.)
| | - Shengzuo Fang
- College of Forestry and Grassland, Nanjing Forestry University, Nanjing 210037, China; (Y.T.); (W.Y.); (S.W.)
- Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
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189
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Klaus A, Marcon C, Hochholdinger F. Spatiotemporal transcriptomic plasticity in barley roots: unravelling water deficit responses in distinct root zones. BMC Genomics 2024; 25:79. [PMID: 38243200 PMCID: PMC10799489 DOI: 10.1186/s12864-024-10002-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/10/2024] [Indexed: 01/21/2024] Open
Abstract
BACKGROUND Drought poses a major threat to agricultural production and thus food security. Understanding the processes shaping plant responses to water deficit is essential for global food safety. Though many studies examined the effect of water deficit on the whole-root level, the distinct functions of each root zone and their specific stress responses remain masked by this approach. RESULTS In this study, we investigated the effect of water deficit on root development of the spring barley (Hordeum vulgare L.) cultivar Morex and examined transcriptomic responses at the level of longitudinal root zones. Water deficit significantly reduced root growth rates after two days of treatment. RNA-sequencing revealed root zone and temporal gene expression changes depending on the duration of water deficit treatment. The majority of water deficit-regulated genes were unique for their respective root zone-by-treatment combination, though they were associated with commonly enriched gene ontology terms. Among these, we found terms associated with transport, detoxification, or cell wall formation affected by water deficit. Integration of weighted gene co-expression analyses identified differential hub genes, that highlighted the importance of modulating energy and protein metabolism and stress response. CONCLUSION Our findings provide new insights into the highly dynamic and spatiotemporal response cascade triggered by water deficit and the underlying genetic regulations on the level of root zones in the barley cultivar Morex, providing potential targets to enhance plant resilience against environmental constraints. This study further emphasizes the importance of considering spatial and temporal resolution when examining stress responses.
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Affiliation(s)
- Alina Klaus
- Institute for Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Caroline Marcon
- Institute for Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany
| | - Frank Hochholdinger
- Institute for Crop Science and Resource Conservation, Crop Functional Genomics, University of Bonn, Friedrich-Ebert-Allee 144, 53113, Bonn, Germany.
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190
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Wang D, Lv S, Guo Z, Lin K, Zhang X, Jiang P, Lou T, Yi Z, Zhang B, Xie W, Li Y. PHT1;5 Repressed by ANT Mediates Pi Acquisition and Distribution under Low Pi and Salinity in Salt Cress. Plant Cell Physiol 2024; 65:20-34. [PMID: 37758243 DOI: 10.1093/pcp/pcad114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/19/2023] [Accepted: 09/26/2023] [Indexed: 10/03/2023]
Abstract
Salinity and phosphate (Pi) starvation are the most common abiotic stresses that threaten crop productivity. Salt cress (Eutrema salsugineum) displays good tolerance to both salinity and Pi limitation. Previously, we found several Phosphate Transporter (PHT) genes in salt cress upregulated under salinity. Here, EsPHT1;5 induced by both low Pi (LP) and salinity was further characterized. Overexpression of EsPHT1;5 in salt cress enhanced plant tolerance to LP and salinity, while the knock-down lines exhibited growth retardation. The analysis of phosphorus (P) content and shoot/root ratio of total P in EsPHT1;5-overexpressing salt cress seedlings and the knock-down lines as well as arsenate uptake assays suggested the role of EsPHT1;5 in Pi acquisition and root-shoot translocation under Pi limitation. In addition, overexpression of EsPHT1;5 driven by the native promoter in salt cress enhanced Pi mobilization from rosettes to siliques upon a long-term salt treatment. Particularly, the promoter of EsPHT1;5 outperformed that of AtPHT1;5 in driving gene expression under salinity. We further identified a transcription factor EsANT, which negatively regulated EsPHT1;5 expression and plant tolerance to LP and salinity. Taken together, EsPHT1;5 plays an integral role in Pi acquisition and distribution in plant response to LP and salt stress. Further, EsANT may be involved in the cross-talk between Pi starvation and salinity signaling pathways. This work provides further insight into the mechanism underlying high P use efficiency in salt cress in its natural habitat, and evidence for a link between Pi and salt signaling.
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Affiliation(s)
- Duoliya Wang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Sulian Lv
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Zijing Guo
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Kangqi Lin
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Xuan Zhang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Ping Jiang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Tengxue Lou
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Ze Yi
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Bo Zhang
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Wenzhu Xie
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
| | - Yinxin Li
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
- China National Botanical Garden, Beijing, China
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191
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Yang T, Pang B, Zhou L, Gu L, Wang H, Du X, Wang H, Zhu B. Transcriptome Profiling, Physiological and Biochemical Analyses Reveal Comprehensive Insights in Cadmium Stress in Brassica carinata L. Int J Mol Sci 2024; 25:1260. [PMID: 38279259 PMCID: PMC10816673 DOI: 10.3390/ijms25021260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
With the constant progress of urbanization and industrialization, cadmium (Cd) has emerged as one of the heavy metals that pollute soil and water. The presence of Cd has a substantial negative impact on the growth and development of both animals and plants. The allotetraploid Brasscia. carinata, an oil crop in the biofuel industry, is known to produce seeds with a high percentage of erucic acid; it is also known for its disease resistance and widespread adaptability. However, there is limited knowledge regarding the tolerance of B. carinata to Cd and its physiological responses and gene expressions under exposure to Cd. Here, we observed that the tested B. carinata exhibited a strong tolerance to Cd (1 mmol/L CdCl2 solution) and exhibited a significant ability to accumulate Cd, particularly in its roots, with concentrations reaching up to 3000 mg/kg. Additionally, we found that the total oil content of B. carinata seeds harvested from the Cd-contaminated soil did not show a significant change, but there were noticeable alterations in certain constituents. The activities of antioxidant enzymes, including catalase (CAT), superoxide dismutase (SOD), peroxidase (POD), and ascorbate peroxidase (APX), were observed to significantly increase after treatment with different concentrations of CdCl2 solutions (0.25 mmol/L, 0.5 mmol/L, and 1 mmol/L CdCl2). This suggests that these antioxidant enzymes work together to enhance Cd tolerance. Comparative transcriptome analysis was conducted to identify differentially expressed genes (DEGs) in the shoots and roots of B. carinata when exposed to a 0.25 mmol/L CdCl2 solution for 7 days. A total of 631 DEGs were found in the shoots, while 271 DEGs were found in the roots. It was observed that these selected DEGs, which responded to Cd stress, also showed differential expression after exposure to PbCl2. This suggests that B. carinata may employ a similar molecular mechanism when tolerating these heavy metals. The functional annotation of the DEGs showed enrichment in the categories of 'inorganic ion transport and metabolism' and 'signal transduction mechanisms'. Additionally, the DEGs involved in 'tryptophan metabolism' and 'zeatin biosynthesis' pathways were found to be upregulated in both the shoots and roots of B. carinata, suggesting that the plant can enhance its tolerance to Cd by promoting the biosynthesis of plant hormones. These results highlight the strong Cd tolerance of B. carinata and its potential use as a Cd accumulator. Overall, our study provides valuable insights into the mechanisms underlying heavy metal tolerance in B. carinata.
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Affiliation(s)
| | | | | | | | | | | | - Huinan Wang
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (T.Y.); (B.P.); (L.Z.); (L.G.); (H.W.); (X.D.)
| | - Bin Zhu
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (T.Y.); (B.P.); (L.Z.); (L.G.); (H.W.); (X.D.)
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192
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Wulf K, Sun J, Wang C, Ho-Plagaro T, Kwon CT, Velandia K, Correa-Lozano A, Tamayo-Navarrete MI, Reid JB, García Garrido JM, Foo E. The Role of CLE Peptides in the Suppression of Mycorrhizal Colonization of Tomato. Plant Cell Physiol 2024; 65:107-119. [PMID: 37874980 PMCID: PMC10799714 DOI: 10.1093/pcp/pcad124] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 09/11/2023] [Accepted: 10/16/2023] [Indexed: 10/26/2023]
Abstract
Symbioses with beneficial microbes are widespread in plants, but these relationships must balance the energy invested by the plants with the nutrients acquired. Symbiosis with arbuscular mycorrhizal (AM) fungi occurs throughout land plants, but our understanding of the genes and signals that regulate colonization levels is limited, especially in non-legumes. Here, we demonstrate that in tomato, two CLV3/EMBRYO-SURROUNDING REGION (CLE) peptides, SlCLE10 and SlCLE11, act to suppress AM colonization of roots. Mutant studies and overexpression via hairy transformation indicate that SlCLE11 acts locally in the root to limit AM colonization. Indeed, SlCLE11 expression is strongly induced in AM-colonized roots, but SlCLE11 is not required for phosphate suppression of AM colonization. SlCLE11 requires the FIN gene that encodes an enzyme required for CLE peptide arabinosylation to suppress mycorrhizal colonization. However, SlCLE11 suppression of AM does not require two CLE receptors with roles in regulating AM colonization, SlFAB (CLAVATA1 ortholog) or SlCLV2. Indeed, multiple parallel pathways appear to suppress mycorrhizal colonization in tomato, as double mutant studies indicate that SlCLV2 and FIN have an additive influence on mycorrhizal colonization. SlCLE10 appears to play a more minor or redundant role, as cle10 mutants did not influence intraradical AM colonization. However, the fact that cle10 mutants had an elevated number of hyphopodia and that ectopic overexpression of SlCLE10 did suppress mycorrhizal colonization suggests that SlCLE10 may also play a role in suppressing AM colonization. Our findings show that CLE peptides regulate AM colonization in tomato and at least SlCLE11 likely requires arabinosylation for activity.
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Affiliation(s)
- Kate Wulf
- Discipline of Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
| | - Jiacan Sun
- Discipline of Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
| | - Chenglei Wang
- Discipline of Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
- Enza Zaden Australia, 218 Eumungerie Road, Narromine, NSW 2821, Australia
| | - Tania Ho-Plagaro
- Department of Soil Microbiology and Symbiotic Systems, Zaidín Experimental Station (EEZ), CSIC, C. Prof. Albareda, 1, Granada 18008, Spain
| | - Choon-Tak Kwon
- Department of Smart Farm Science, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, Yongin 17104, Republic of Korea
- Graduate School of Green-Bio Science, Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do, Yongin 17104, Republic of Korea
| | - Karen Velandia
- Discipline of Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
| | - Alejandro Correa-Lozano
- Discipline of Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
| | - María Isabel Tamayo-Navarrete
- Department of Soil Microbiology and Symbiotic Systems, Zaidín Experimental Station (EEZ), CSIC, C. Prof. Albareda, 1, Granada 18008, Spain
| | - James B Reid
- Discipline of Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
| | - Jose Manuel García Garrido
- Department of Soil Microbiology and Symbiotic Systems, Zaidín Experimental Station (EEZ), CSIC, C. Prof. Albareda, 1, Granada 18008, Spain
| | - Eloise Foo
- Discipline of Biological Sciences, School of Natural Sciences, University of Tasmania, Private Bag 55, Hobart, Tasmania 7001, Australia
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Jing C, Wang M, Lu X, Prince M, Zhang M, Li Y, Zhang C, Meng C, Zhang L, Zheng Y, Xu Z. Transcriptome analysis reveals how cadmium promotes root development and accumulates in Apocynum venetum, a promising plant for greening cadmium-contaminated soil. Ecotoxicol Environ Saf 2024; 270:115872. [PMID: 38171098 DOI: 10.1016/j.ecoenv.2023.115872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/21/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024]
Abstract
Cadmium (Cd) contamination poses a substantial threat the environment, necessitating effective remediation strategies. Phytoremediation emerges as a cost-efficient and eco-friendly approach for reducing Cd levels in the soil. In this study, the suitability of A. venetum for ameliorating Cd-contaminated soils was evaluated. Mild Cd stress promoted seedling and root growth, with the root being identified as the primary tissue for Cd accumulation. The Cd content of roots ranged from 0.35 to 0.55 mg/g under treatment with 10-50 µM CdCl2·2.5 H2O, and the bioaccumulation factor ranged from 28.78 to 84.43. Transcriptome sequencing revealed 20,292 unigenes, and 7507 nonredundant differentially expressed genes (DEGs) were identified across five comparison groups. DEGs belonging to the "MAPK signaling pathway-plant," "monoterpenoid biosynthesis," and "flavonoid biosynthesis pathway" exhibited higher expression levels in roots compared to stems and leaves. In addition, cytokinin-related DEGs, ROS scavenger genes, such as P450, glutathione-S-transferase (GST), and superoxide dismutase (SOD), and the cell wall biosynthesis-related genes, CSLG and D-GRL, were also upregulated in the root tissue, suggesting that Cd promotes root development. Conversely, certain ABC transporter genes, (e.g, NRAMP5), and some vacuolar iron transporters, predominantly expressed in the roots, displayed a strong correlation with Cd content, revealing the mechanism underlying the compartmentalized storage of Cd in the roots. KEGG enrichment analysis of DEGs showed that the pathways associated with the biosynthesis of flavonoids, lignin, and some terpenoids were significantly enriched in the roots under Cd stress, underscoring the pivotal role of these pathways in Cd detoxification. Our study suggests A. venetum as a potential Cd-contaminated phytoremediation plant and provides insights into the molecular-level mechanisms of root development promotion and accumulation mechanism in response to Cd stress.
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Affiliation(s)
- Changliang Jing
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257300, China
| | - Meng Wang
- College of Agronomy, Qingdao Agricultural University, Qingdao 266109, China
| | - Xueli Lu
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257300, China
| | - Marowa Prince
- Department of Plant Production Sciences and Technologies, University of Zimbabwe, Harare, Zimbabwe
| | - Mengchao Zhang
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Yiqiang Li
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257300, China
| | - Chengsheng Zhang
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257300, China
| | - Chen Meng
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257300, China
| | - Li Zhang
- College of Agriculture, Shanxi Agricultural University, Taigu 030801, China
| | - Yanfen Zheng
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257300, China.
| | - Zongchang Xu
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China; National Center of Technology Innovation for Comprehensive Utilization of Saline-Alkali Land, Dongying 257300, China.
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194
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Qian R, Li Y, Liu Y, Sun N, Liu L, Lin X, Sun C. Integrated transcriptomic and metabolomic analysis reveals the potential mechanisms underlying indium-induced inhibition of root elongation in wheat plants. Sci Total Environ 2024; 908:168477. [PMID: 37951262 DOI: 10.1016/j.scitotenv.2023.168477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/07/2023] [Accepted: 11/08/2023] [Indexed: 11/13/2023]
Abstract
Soil contamination by indium, an emerging contaminant from electronics, has a negative impact on crop growth. Inhibition of root growth serves as a valuable biomarker for predicting indium phytotoxicity. Therefore, elucidating the molecular mechanisms underlying indium-induced root damage is essential for developing strategies to mitigate its harmful effects. Our transcriptomic findings revealed that indium affects the expression of numerous genes related to cell wall composition and metabolism in wheat roots. Morphological and compositional analysis revealed that indium induced a 2.9-fold thickening and a 17.5 % increase in the content of cell walls in wheat roots. Untargeted metabolomics indicated a substantial upregulation of the phenylpropanoid biosynthesis pathway. As the major end product of phenylpropanoid metabolism, lignin significantly accumulated in root cell walls after indium exposure. Together with increased lignin precursors, enhanced activity of lignin biosynthesis-related enzymes was observed. Moreover, analysis of the monomeric content and composition of lignin revealed a significant enrichment of p-hydroxyphenyl (H) and syringyl (S) units in root cell walls under indium stress. The present study contributes to the existing knowledge of indium toxicity. It provides valuable insights for developing sustainable solutions to address the challenges posed by electronic waste and indium contamination on agroecosystems.
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Affiliation(s)
- Ruyi Qian
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yihao Li
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Yuhao Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Nan Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Lijuan Liu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Xianyong Lin
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Chengliang Sun
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China.
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195
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Zhang W, Guan M, Chen M, Lin X, Xu P, Cao Z. Mutation of OsNRAMP5 reduces cadmium xylem and phloem transport in rice plants and its physiological mechanism. Environ Pollut 2024; 341:122928. [PMID: 37967711 DOI: 10.1016/j.envpol.2023.122928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/18/2023] [Accepted: 11/11/2023] [Indexed: 11/17/2023]
Abstract
Natural resistance associated macrophage protein 5 (NRAMP5) is a key transporter for cadmium (Cd) uptake by rice roots; however, the effect of OsNRAMP5 on Cd translocation and redistribution in rice plants remains unknown. In this study, an extremely low Cd-accumulation mutant (lcd1) and wild type (WT) plants were utilized to investigate the effect of OsNRAMP5 mutation on Cd translocation and redistribution via the xylem and phloem and its possible physiological mechanism using field, hydroponic and isotope-labelling experiments. The results showed that OsNRAMP5 mutation reduced xylem and phloem transport of Cd, due to remarkably lower Cd translocation from roots to shoots and from the leaves Ⅰ-Ⅲ to their corresponding nodes, as well as lower Cd concentrations in xylem and phloem sap of lcd1 compared to WT plants. Mutation of OsNRAMP5 reduced Cd translocation from roots to shoots in lcd1 plants by increasing Cd deposition in cellulose of root cell walls and reducing OsHMA2-and OsCCX2-mediated xylem loading of Cd, and the citric acid- and tartaric acid-mediated long-distance xylem transport of Cd. Moreover, OsNRAMP5 mutation inhibited Cd redistribution from flag leaves to nodes and panicles in lcd1 plants by increasing Cd sequestration in cellulose and vacuoles, and decreasing OsLCT1-mediated Cd phloem transport in flag leaves.
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Affiliation(s)
- Wanyue Zhang
- Rice Product Quality Supervision and Inspection Center, China National Rice Research Institute, Hangzhou, 310006, China
| | - Meiyan Guan
- Rice Product Quality Supervision and Inspection Center, China National Rice Research Institute, Hangzhou, 310006, China
| | - Mingxue Chen
- Rice Product Quality Supervision and Inspection Center, China National Rice Research Institute, Hangzhou, 310006, China
| | - Xiaoyan Lin
- Rice Product Quality Supervision and Inspection Center, China National Rice Research Institute, Hangzhou, 310006, China
| | - Ping Xu
- Rice Product Quality Supervision and Inspection Center, China National Rice Research Institute, Hangzhou, 310006, China
| | - Zhenzhen Cao
- Rice Product Quality Supervision and Inspection Center, China National Rice Research Institute, Hangzhou, 310006, China.
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Cao X, Chen Q, Xu L, Zhao R, Li T, Ci L. The intrinsic and extrinsic mechanisms regulated by functional carbon nanodots for the phytoremediation of multi-metal pollution in soils. J Hazard Mater 2024; 462:132646. [PMID: 37837777 DOI: 10.1016/j.jhazmat.2023.132646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 06/24/2023] [Accepted: 09/25/2023] [Indexed: 10/16/2023]
Abstract
Functional carbon nanodots (FCNs) were currently demonstrated to regulate plant behavior in the agricultural and environmental areas. However, their regulation mechanisms on the interactions of plant-soil system during phytoremediation remain unrevealed. Here, Solanum nigrum L. was employed to explore the intrinsic and extrinsic mechanisms regulated by FCNs in the phytoremediation of Cd-Pb co-contaminated soils. The mediation of FCNs on metal removal and plant growth showed a hormesis manner, wherein the maximum induction effect was contributed by 15 mg kg-1 FCNs. Cd/Pb removal were enhanced by 8.5% and 31.6%, respectively. Moreover, FCNs reallocate metal distribution in plant by immobilized metals in roots and suppressed metal translocation to leaves. Improving plant growth (by 82.8% for root), stimulating plant hormesis, and activating plant detoxification pathways are the intrinsic mechanism for the phytoremediation smartly regulated by FCNs. Notably, FCNs induced soil enzyme activities that associated with soil nutrients recycling, up-regulated the microbial diversity and the soil immune system, and regulated S. nigrum L. to recruit beneficial microbials in the rhizosphere. The above-mentioned comprehensive improvement of soil micro-environment is the extrinsic mechanism regulated by FCNs. This study provides new insights to evaluate the interactions of nanomaterials with plant-soil system under soil contamination.
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Affiliation(s)
- Xiufeng Cao
- School of Municipal & Environmental Engineering, Shandong Jianzhu University, Jinan 250101, PR China
| | - Qiong Chen
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, PR China.
| | - Liang Xu
- Shandong Taixing Advanced Material Co., LTD., Shandong Energy Group, Jinan 250204, PR China
| | - Rui Zhao
- School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China
| | - Tao Li
- School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China
| | - Lijie Ci
- School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, PR China; Research Center for Carbon Nanomaterials, Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, PR China.
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197
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Kuang L, Yan T, Gao F, Tang W, Wu D. Multi-omics analysis reveals differential molecular responses to cadmium toxicity in rice root tip and mature zone. J Hazard Mater 2024; 462:132758. [PMID: 37837773 DOI: 10.1016/j.jhazmat.2023.132758] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/22/2023] [Accepted: 10/09/2023] [Indexed: 10/16/2023]
Abstract
Cadmium (Cd) is a highly toxic heavy metal that can be readily absorbed by plants and enriched in human body. Rice (Oryza sativa L.) yield and grain quality are affected by excessive Cd in the soil. Therefore, understanding the mechanisms of Cd absorption, accumulation and detoxification in the root apex is crucial for developing low-Cd rice cultivars. After Cd treatment, Cd concentration in rice root tips (RT) was 1.4 times higher than that in basal roots (BR). To uncover the distinct molecular responses to Cd toxicity, we conducted transcriptomic, proteomic, and metabolomic analyses on the two root sections. The results revealed that the RT exhibited 1.2-2.0 fold higher transcript or protein abundance of several Cd-related transporters than the BR, including Nramp1, Nramp5, IRT1, and HMA3, thereby contributing to more Cd accumulation in the RT. Furthermore, multi-omics analysis unveiled that the RT had enhanced activity in 'phenylpropanoid metabolism', 'AsA-GSH cycle' and 'tryptophan metabolism', conferring the stronger antioxidant system. While the BR showed higher activation in 'cell wall remodeling' and 'terpenoid biosynthesis'. This comprehensive study provides insights into the regulatory network of genes, proteins and metabolites involved in the differential responses to Cd toxicity between rice root tips and mature zones.
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Affiliation(s)
- Liuhui Kuang
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; Yuelushan Laboratory, Changsha 410128, China
| | - Tao Yan
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; Yuelushan Laboratory, Changsha 410128, China
| | - Fei Gao
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; Yuelushan Laboratory, Changsha 410128, China
| | - Wenbang Tang
- Yuelushan Laboratory, Changsha 410128, China; State Key Laboratory of Hybrid Rice, Changsha 410125, China; Hunan Hybrid Rice Research Center, Hunan Academy of Agricultural Science, Changsha 410125, China.
| | - Dezhi Wu
- College of Agronomy, Hunan Agricultural University, Changsha 410128, China; Yuelushan Laboratory, Changsha 410128, China.
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198
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Liu C, Lv T, Shen Y, Liu T, Liu M, Hu J, Liu S, Jiang Y, Zhang M, Zhao M, Wang K, Wang Y. Genome-wide identification and integrated analysis of TCP genes controlling ginsenoside biosynthesis in Panax ginseng. BMC Plant Biol 2024; 24:47. [PMID: 38216888 PMCID: PMC10787463 DOI: 10.1186/s12870-024-04729-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 01/04/2024] [Indexed: 01/14/2024]
Abstract
Panax ginseng is an important medicinal plant, and ginsenosides are the main bioactive molecules of ginseng. The TCP (TBI, CYC, PCF) family is a group of transcription factors (TFs) that play an important role in plant growth and development, hormone signalling and synthesis of secondary metabolites. In our study, 78 PgTCP transcripts were identified from the established ginseng transcriptome database. A phylogenetic tree analysis showed that the 67 PgTCP transcripts with complete open reading frames were classified into three subfamilies, including CIN, PCF, and CYC/TB1. Protein structure analysis showed that PgTCP genes had bHLH structures. Chromosomal localization analysis showed that 63 PgTCP genes were localized on 17 of the 24 chromosomes of the Chinese ginseng genome. Expression pattern analysis showed that PgTCP genes differed among different lineages and were spatiotemporally specific. Coexpression network analysis indicated that PgTCP genes were coexpressed and involved in plant activities or metabolic regulation in ginseng. The expression levels of PgTCP genes from class I (PCF) were significantly downregulated, while the expression levels of PgTCP genes from class II (CIN and CYC/TB1) were upregulated, suggesting that TCP genes may be involved in the regulation of secondary metabolism in ginseng. As the PgTCP26-02 gene was found to be related to ginsenoside synthesis, its predicted protein structure and expression pattern were further analysed. Our results provide new insights into the origin, differentiation, evolution and function of the PgTCP gene family in ginseng, as well as the regulation of plant secondary metabolism.
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Affiliation(s)
- Chang Liu
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Tingting Lv
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Yanhua Shen
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Tao Liu
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Mingming Liu
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Jian Hu
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Sizhang Liu
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Yang Jiang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Meiping Zhang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China
| | - Mingzhu Zhao
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China.
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China.
| | - Kangyu Wang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China.
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China.
| | - Yi Wang
- College of Life Science, Jilin Agricultural University, Changchun, Jilin, 130118, China.
- Jilin Engineering Research Center Ginseng Genetic Resources Development and Utilization, Changchun, Jilin, 130118, China.
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199
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Maniero RA, Picco C, Hartmann A, Engelberger F, Gradogna A, Scholz-Starke J, Melzer M, Künze G, Carpaneto A, von Wirén N, Giehl RFH. Ferric reduction by a CYBDOM protein counteracts increased iron availability in root meristems induced by phosphorus deficiency. Nat Commun 2024; 15:422. [PMID: 38212310 PMCID: PMC10784544 DOI: 10.1038/s41467-023-43912-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 11/23/2023] [Indexed: 01/13/2024] Open
Abstract
To mobilize sparingly available phosphorus (P) in the rhizosphere, many plant species secrete malate to release P sorbed onto (hydr)oxides of aluminum and iron (Fe). In the presence of Fe, malate can provoke Fe over-accumulation in the root apoplast, triggering a series of events that inhibit root growth. Here, we identified HYPERSENSITIVE TO LOW P1 (HYP1), a CYBDOM protein constituted of a DOMON and a cytochrome b561 domain, as critical to maintain cell elongation and meristem integrity under low P. We demonstrate that HYP1 mediates ascorbate-dependent trans-plasma membrane electron transport and can reduce ferric and cupric substrates in Xenopus laevis oocytes and in planta. HYP1 expression is up-regulated in response to P deficiency in the proximal zone of the root apical meristem. Disruption of HYP1 leads to increased Fe and callose accumulation in the root meristem and causes significant transcriptional changes in roots. We further demonstrate that HYP1 activity overcomes malate-induced Fe accumulation, thereby preventing Fe-dependent root growth arrest in response to low P. Collectively, our results uncover an ascorbate-dependent metalloreductase that is critical to protect root meristems of P-deficient plants from increased Fe availability and provide insights into the physiological function of the yet poorly characterized but ubiquitous CYBDOM proteins.
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Affiliation(s)
- Rodolfo A Maniero
- Leibniz Institute of Plant Genetics & Crop Plant Research (IPK) OT Gatersleben, Corrensstr 3, 06466, Seeland, Germany
| | - Cristiana Picco
- Institute of Biophysics, National Research Council, Via De Marini 16, 16149, Genoa, Italy
| | - Anja Hartmann
- Leibniz Institute of Plant Genetics & Crop Plant Research (IPK) OT Gatersleben, Corrensstr 3, 06466, Seeland, Germany
| | - Felipe Engelberger
- Institute for Drug Discovery, Leipzig University, SAC 04103, Leipzig, Germany
| | - Antonella Gradogna
- Institute of Biophysics, National Research Council, Via De Marini 16, 16149, Genoa, Italy
| | - Joachim Scholz-Starke
- Institute of Biophysics, National Research Council, Via De Marini 16, 16149, Genoa, Italy
| | - Michael Melzer
- Leibniz Institute of Plant Genetics & Crop Plant Research (IPK) OT Gatersleben, Corrensstr 3, 06466, Seeland, Germany
| | - Georg Künze
- Institute for Drug Discovery, Leipzig University, SAC 04103, Leipzig, Germany
- Center for Scalable Data Analytics and Artificial Intelligence, Leipzig University, 04105, Leipzig, Germany
- Interdisciplinary Center for Bioinformatics, Leipzig University, 04107, Leipzig, Germany
| | - Armando Carpaneto
- Institute of Biophysics, National Research Council, Via De Marini 16, 16149, Genoa, Italy
- Department of Earth, Environment and Life Sciences (DISTAV), University of Genoa, Viale Benedetto XV 5, 16132, Genoa, Italy
| | - Nicolaus von Wirén
- Leibniz Institute of Plant Genetics & Crop Plant Research (IPK) OT Gatersleben, Corrensstr 3, 06466, Seeland, Germany
| | - Ricardo F H Giehl
- Leibniz Institute of Plant Genetics & Crop Plant Research (IPK) OT Gatersleben, Corrensstr 3, 06466, Seeland, Germany.
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200
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Clúa J, Montpetit J, Jimenez-Sandoval P, Naumann C, Santiago J, Poirier Y. A CYBDOM protein impacts iron homeostasis and primary root growth under phosphate deficiency in Arabidopsis. Nat Commun 2024; 15:423. [PMID: 38212368 PMCID: PMC10784552 DOI: 10.1038/s41467-023-43911-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 11/23/2023] [Indexed: 01/13/2024] Open
Abstract
Arabidopsis primary root growth response to phosphate (Pi) deficiency is mainly controlled by changes in apoplastic iron (Fe). Upon Pi deficiency, apoplastic Fe deposition in the root apical meristem activates pathways leading to the arrest of meristem maintenance and inhibition of cell elongation. Here, we report that a member of the uncharacterized cytochrome b561 and DOMON domain (CYBDOM) protein family, named CRR, promotes iron reduction in an ascorbate-dependent manner and controls apoplastic iron deposition. Under low Pi, the crr mutant shows an enhanced reduction of primary root growth associated with increased apoplastic Fe in the root meristem and a reduction in meristematic cell division. Conversely, CRR overexpression abolishes apoplastic Fe deposition rendering primary root growth insensitive to low Pi. The crr single mutant and crr hyp1 double mutant, harboring a null allele in another member of the CYDOM family, shows increased tolerance to high-Fe stress upon germination and seedling growth. Conversely, CRR overexpression is associated with increased uptake and translocation of Fe to the shoot and results in plants highly sensitive to Fe excess. Our results identify a ferric reductase implicated in Fe homeostasis and developmental responses to abiotic stress, and reveal a biological role for CYBDOM proteins in plants.
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Affiliation(s)
- Joaquín Clúa
- Department of Plant Molecular Biology, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland
| | - Jonatan Montpetit
- Department of Plant Molecular Biology, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland
| | - Pedro Jimenez-Sandoval
- Department of Plant Molecular Biology, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland
| | - Christin Naumann
- Department of Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120, Halle, Germany
| | - Julia Santiago
- Department of Plant Molecular Biology, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland
| | - Yves Poirier
- Department of Plant Molecular Biology, Biophore Building, University of Lausanne, 1015, Lausanne, Switzerland.
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