1
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Qing T, Xie TC, Zhu QY, Lu HP, Liu JX. Regulation of metal homoeostasis by two F-group bZIP transcription factors bZIP48 and bZIP50 in rice. PLANT, CELL & ENVIRONMENT 2024; 47:1852-1864. [PMID: 38334305 DOI: 10.1111/pce.14852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 12/02/2023] [Accepted: 01/30/2024] [Indexed: 02/10/2024]
Abstract
Zinc (Zn) deficiency not only impairs plant growth and development but also has negative effects on human health. Rice (Oryza Sativa L.) is a staple food for over half of the global population, yet the regulation of Zn deficiency response in rice remains largely unknown. In this study, we provide evidence that two F-group bZIP transcription factors, OsbZIP48/50, play a crucial role in Zn deficiency response. Mutations in OsbZIP48/50 result in impaired growth and reduced Zn/Fe/Cu content under Zn deficiency conditions. The N-terminus of OsbZIP48/OsbZIP50 contains two Zn sensor motifs (ZSMs), deletion or mutation of these ZSMs leads to increased nuclear localization. Both OsbZIP48 and OsbZIP50 exhibit transcriptional activation activity, and the upregulation of 1117 genes involved in metal uptake and other processes by Zn deficiency is diminished in the OsbZIP48/50 double mutant. Both OsbZIP48 and OsbZIP50 bind to the promoter of OsZIP10 and activate the ZDRE cis-element. Amino acid substitution mutation of the ZSM domain of OsbZIP48 in OsbZIP50 mutant background increases the content of Zn/Fe/Cu in brown rice seeds and leaves. Therefore, this study demonstrates that OsbZIP48/50 play a crucial role in regulating metal homoeostasis and identifies their downstream genes involved in the Zn deficiency response in rice.
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Affiliation(s)
- Tao Qing
- State Key Laboratory of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Tian-Ci Xie
- State Key Laboratory of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Qiao-Yun Zhu
- State Key Laboratory of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Hai-Ping Lu
- State Key Laboratory of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, China
| | - Jian-Xiang Liu
- State Key Laboratory of Plant Environmental Resilience, College of Life Sciences, Zhejiang University, Hangzhou, China
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2
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Nampei M, Ogi H, Sreewongchai T, Nishida S, Ueda A. Potassium transporter OsHAK17 may contribute to saline-alkaline tolerant mechanisms in rice (Oryza sativa). JOURNAL OF PLANT RESEARCH 2024; 137:505-520. [PMID: 38427146 PMCID: PMC11082038 DOI: 10.1007/s10265-024-01529-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Accepted: 01/28/2024] [Indexed: 03/02/2024]
Abstract
Rice production is seriously affected by saline-alkaline stress worldwide. To elucidate the saline-alkaline tolerance mechanisms in a novel tolerant rice variety, Shwe Nang Gyi (SNG), we investigated ion accumulation in SNG and Koshihikari (KSH), which is a saline-alkaline sensitive rice variety, and the candidates for saline-alkaline inducible genes in SNG using RNA-seq. SNG had superior ion accumulation capacity, such as K and Zn, compared to KSH. In contrast, SNG accumulated the same level of Na content in its leaf blades as KSH despite the higher dry weight of the SNG leaf blades. We further found that the expression of numerous genes, including several K+ transporter/high-affinity K+ transporter/K+ uptake protein/K+ transporter (HAK/KUP/KT) family members, were upregulated in SNG, and that OsHAK17 and OsHAK21 expression levels in the roots were significantly higher in SNG than in KSH. Moreover, yeast complementation analysis revealed that OsHAK17 was involved in K+ uptake under high-Na conditions. These results suggested that SNG has an effective K+ acquisition system supported by OsHAK17 functioning in saline-alkaline environments.
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Affiliation(s)
- Mami Nampei
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima City, Hiroshima, 739-8528, Japan
| | - Hiromu Ogi
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima City, Hiroshima, 739-8528, Japan
| | - Tanee Sreewongchai
- Department of Agronomy, Faculty of Agriculture, Kasetsart University, 50 Ngam Wong Wan Road, Lat Yao, Chatuchak, 10900, Bangkok, Thailand
| | - Sho Nishida
- Faculty of Agriculture, Saga University, 1Honjo-Machi, Saga City, Saga, 840-8502, Japan
- United Graduate School of Agricultural Sciences, Kagoshima University, 1-21-24, Korimoto, Kagoshima City, Kagoshima, 890-0065, Japan
| | - Akihiro Ueda
- Graduate School of Integrated Sciences for Life, Hiroshima University, 1-4-4 Kagamiyama, Higashi-Hiroshima City, Hiroshima, 739-8528, Japan.
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3
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Hu S, Du B, Mu G, Jiang Z, Li H, Song Y, Zhang B, Xia J, Rouached H, Zheng L. The transcription factor OsbZIP48 governs rice responses to zinc deficiency. PLANT, CELL & ENVIRONMENT 2024; 47:1526-1542. [PMID: 38251320 DOI: 10.1111/pce.14825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 01/23/2024]
Abstract
Zinc (Zn) deficiency is the most prevalent micronutrient disorder in rice and leads to delayed development and decreased yield. Nevertheless, despite its primary importance, how rice responds to Zn deficiency remains poorly understood. This study presents genetic evidence supporting the crucial role of OsbZIP48 in regulating rice's response to Zn deficiency, consistent with earlier findings in the model plant Arabidopsis. Genetic inactivation of OsbZIP48 in rice seedlings resulted in heightened sensitivity to Zn deficiency and reduced Zn translocation from roots to shoots. Consistently, OsbZIP48 was constitutively expressed in roots, slightly induced by Zn deficiency in shoots and localized into nuclei induced by Zn deficiency. Comparative transcriptome analysis of the wild-type plants and osbzip48 mutant grown under Zn deficiency enabled the identification of OsbZIP48 target genes, including key Zn transporter genes (OsZIP4 and OsZIP8). We demonstrated that OsbZIP48 controlled the expressions of these genes by directly binding to their promoters, specifically to the Zn deficiency response element motif. This study establishes OsbZIP48 as a critical transcription factor in rice's response to Zn deficiency, offering valuable insights for developing Zn-biofortified rice varieties to combat global Zn limitation.
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Affiliation(s)
- Shubao Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- College of Life sciences, Anqing Normal University, Anqing, China
| | - Binbin Du
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Guangmao Mu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Zichen Jiang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Hui Li
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yuxinrui Song
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Baolei Zhang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, China
| | - Jixing Xia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, China
| | - Hatem Rouached
- Department of Plant, Soil, and Microbial Sciences, Plant Resilience Institute, Michigan State University, East Lansing, Michigan, USA
| | - Luqing Zheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
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4
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Zhang X, Kong J, Yu L, Wang A, Yang Y, Li X, Wang J. Functional characterization of Fagopyrum tataricum ZIP gene family as a metal ion transporter. FRONTIERS IN PLANT SCIENCE 2024; 15:1373066. [PMID: 38693928 PMCID: PMC11062324 DOI: 10.3389/fpls.2024.1373066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 03/21/2024] [Indexed: 05/03/2024]
Abstract
The zinc/iron-regulated transporter-like proteins (ZIP) family acts as an important transporter for divalent metal cations such as Zn, Fe, Mn, Cu, and even Cd. However, their condition is unclear in Tartary buckwheat (Fagopyrum tataricum). Here, 13 ZIP proteins were identified and were predicted to be mostly plasma membrane-localized. The transient expressions of FtZIP2 and FtZIP6 in tobacco confirmed the prediction. Multiple sequence alignment analysis of FtZIP proteins revealed that most of them had 8 putative transmembrane (TM) domains and a variable region rich in histidine residues between TM3 and TM4, indicating the reliable affinity to metal ions. Gene expression analysis by qRT-PCR showed that FtZIP genes were markedly different in different organs, such as roots, stems, leaves, flowers, fruits and seeds. However, in seedlings, the relative expression of FtZIP10 was notably induced under the CdCl2 treatment, while excessive Zn2+, Fe2+, Mn2+ and Cd2+ increased the transcript of FtZIP5 or FtZIP13, in comparison to normal conditions. Complementation of yeast mutants with the FtZIP family genes demonstrate that FtZIP7/10/12 transport Zn, FtZIP5/6/7/9/10/11 transport Fe, FtZIP12 transports Mn and FtZIP2/3/4/7 transport Cd. Our data suggest that FtZIP proteins have conserved functions of transportation of metal ions but with distinct spatial expression levels.
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Affiliation(s)
- Xinrong Zhang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Jiao Kong
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Lingzhi Yu
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Anhu Wang
- Panxi Crops Research and Utilization Key Laboratory of Sichuan Province, Xichang College, Xichang, China
| | - Yi Yang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Xiaoyi Li
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Jianmei Wang
- Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
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Cong W, Li N, Miao Y, Huang Y, Zhao W, Kang Y, Zhang B, Wang J, Zhang J, Lv Y, Li J, Zhang J, Gong L, Liu B, Ou X. DNA hypomethylation-associated transcriptional rewiring enables resistance to heavy metal mercury (Hg) stress in rice. JOURNAL OF HAZARDOUS MATERIALS 2024; 461:132649. [PMID: 37783144 DOI: 10.1016/j.jhazmat.2023.132649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 06/17/2023] [Accepted: 09/26/2023] [Indexed: 10/04/2023]
Abstract
Mercury (Hg) is an important hazardous pollutant that can cause phytotoxicity and harm human health through the food chain. Recently, rice (Oryza sativa L.) has been confirmed as a potential Hg bioaccumulator. Although the genetic and molecular mechanisms involved in heavy metal absorption and translocation in rice have been investigated for several heavy metals, Hg is largely neglected. Here, we analyzed one Hg-resistant line in rice (RHg) derived from a DNA methyltransferase-coding gene, OsMET1-2 heterozygous mutant. Compared with its isogenic wild-type (WT), RHg exhibited a significantly higher survival rate after Hg treatment, ameliorated oxidative damage, and lower Hg uptake and translocation. RNAseq-based comparative transcriptomic analysis identified 34 potential Hg resistance-related genes involved in phytohormone signaling, abiotic stress response, and zinc (Zn) transport. Importantly, the elevated expression of Hg resistance-related genes in RHg was highly correlated with DNA hypomethylation in their putative promoter regions. An ionomic analysis unraveled a negative correlation between Zn and Hg in roots. Moreover, Hg concentration was effectively decreased by exogenous application of Zn in Hg-stressed rice plants. Our findings indicate an epigenetic basis of Hg resistance and reveal an antagonistic relationship between Hg and Zn, providing new hints towards Hg detoxification in plants. ENVIRONMENTAL IMPLICATION: Mercury (Hg) as an important hazardous pollutant adversely impacts the environment and jeopardizes human health, due to its chronicity, transferability, persistence, bioaccumulation and toxicity. In this paper, we identified 34 potential genes that may significantly contribute to Hg resistance in rice. We find the expression of Hg resistance-related genes was highly correlated with DNA hypomethylation in their putative promoter regions. Our results also revealed an antagonistic relationship between Hg and Zinc (Zn), providing new hints towards Hg detoxification in plants. Together, findings of this study extend our current understanding of Hg tolerance in rice and are informative to breed seed non-accumulating rice cultivars.
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Affiliation(s)
- Weixuan Cong
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China; Faculty of Agronomy, Jilin Agricultural University, Changchun 130118, China
| | - Ning Li
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Yiling Miao
- Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, Changchun 130062, China
| | - Yuxi Huang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Wenhao Zhao
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Ying Kang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Bingqi Zhang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Jinbin Wang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Jiayu Zhang
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Yinhe Lv
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Jiamo Li
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Jian Zhang
- Faculty of Agronomy, Jilin Agricultural University, Changchun 130118, China
| | - Lei Gong
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China
| | - Bao Liu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China.
| | - Xiufang Ou
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun 130024, China.
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6
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Wang D, Zhang H, Hu X, Zhang H, Feng S, Zhou A. Cell number regulator 8 from Salix linearistipularis enhances cadmium tolerance in poplar by reducing cadmium uptake and accumulation. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 206:108216. [PMID: 38016370 DOI: 10.1016/j.plaphy.2023.108216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/01/2023] [Accepted: 11/20/2023] [Indexed: 11/30/2023]
Abstract
Trace metals have relatively high density and high toxicity at low concentrations. Willow (Salix genus) is an excellent phytoremediation species for soil contaminated by trace metal ions. This study identified a cell number regulator (CNR) gene family member in Salix linearistipularis exhibiting strong metal ion resistance: SlCNR8. SlCNR8 expression was affected by various metal ions, including cadmium (Cd), zinc (Zn), copper (Cu), iron (Fe), and manganese (Mn). SlCNR8 overexpression enhanced Cd, Zn, Cu, and Fe resistance in transgenic poplar seedlings (84K) compared with the wild-type (WT). Moreover, transgenic poplar seedlings showed lower root Cd uptake and less Cd accumulation than WT under Cd stress. SlCNR8 was primarily localized to the nucleus and the plasma membrane-like cell periphery. Furthermore, SlCNR8 had transcriptional activation activity in yeast. The transcript levels of multiple metal ion transporters were altered in the roots of transgenic poplar seedlings compared to WT roots under Cd stress. These results suggest that SlCNR8 may enhance Cd resistance in transgenic poplar by reducing Cd uptake and accumulation. This may be related to altered transcription levels of other transporters or to itself. Our study suggests that SlCNR8 can be used as a candidate gene for genetic improvement of phytostabilisation of trace metals by genetic engineering.
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Affiliation(s)
- Di Wang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Huaifang Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Xuefei Hu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Haizhen Zhang
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China
| | - Shuang Feng
- Large-Scale Instrument and Equipment Sharing Service Platform, Northeast Agricultural University, Harbin, 150030, China.
| | - Aimin Zhou
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, China.
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7
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Joshi G, Soe YP, Palanog A, Hore TK, Nha CT, Calayugan MI, Inabangan-Asilo MA, Amparado A, Pandey ID, Cruz PCS, Hernandez JE, Swamy BPM. Meta-QTL s and haplotypes for efficient zinc biofortification of rice. THE PLANT GENOME 2023; 16:e20315. [PMID: 36896580 DOI: 10.1002/tpg2.20315] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Biofortification of rice with improved grain zinc (Zn) content is the most sustainable and cost-effective approach to address Zn malnutrition in Asia. Genomics-assisted breeding using precise and consistent Zn quantitative trait loci (QTLs), genes, and haplotypes can fast-track the development of Zn biofortified rice varieties. We conducted the meta-analysis of 155 Zn QTLs reported from 26 different studies. Results revealed 57 meta-QTLs with a significant reduction of 63.2% and 80% in the number and confidence interval of the Zn QTLs, respectively. Meta-quantitative trait loci (MQTLs) regions were found to be enriched with diverse metal homeostasis genes; at least 11 MQTLs were colocated with 20 known major genes involved in the production of root exudates, metal uptake, transport, partitioning, and loading into grains in rice. These genes were differentially expressed in vegetative and reproductive tissues, and a complex web of interactions were observed among them. We identified superior haplotypes and their combinations for nine candidate genes (CGs), and the frequency and allelic effects of superior haplotypes varied in different subgroups. The precise MQTLs with high phenotypic variance, CGs, and superior haplotypes identified in our study are useful for an efficient Zn biofortification of rice and to ensure Zn as an essential component of all the future rice varieties through mainstreaming of Zn breeding.
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Affiliation(s)
- Gaurav Joshi
- Rice Genetic Design and Validation Unit, International Rice Research Institute, Los Baños, Philippines
- Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | | | | | - Tapas Kumer Hore
- Rice Genetic Design and Validation Unit, International Rice Research Institute, Los Baños, Philippines
| | - Chau Thanh Nha
- Philippines Rice Research Institute, Muñoz, Nueva Ecija, Philippines
| | | | - Mary Ann Inabangan-Asilo
- Rice Genetic Design and Validation Unit, International Rice Research Institute, Los Baños, Philippines
| | - Amery Amparado
- Rice Genetic Design and Validation Unit, International Rice Research Institute, Los Baños, Philippines
| | - Indra Deo Pandey
- Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand, India
| | | | | | - B P Mallikarjuna Swamy
- Rice Genetic Design and Validation Unit, International Rice Research Institute, Los Baños, Philippines
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Chang JD, Huang S, Wiseno I, Sui FQ, Feng F, Zheng L, Ma JF, Zhao FJ. Dissecting the promotional effect of zinc on cadmium translocation from roots to shoots in rice. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:6790-6803. [PMID: 37610886 DOI: 10.1093/jxb/erad330] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 08/19/2023] [Indexed: 08/25/2023]
Abstract
It is often expected that Zn decreases Cd accumulation in plants due to competition for the same transporters. Here, we found that increasing Zn supply markedly increased the root-to-shoot translocation of Cd in rice. RNA sequencing showed that high Zn up-regulated expression of genes involved in glutathione biosynthesis and metabolism and the Zn/Cd transporter gene OsHMA2, but down-regulated expression of genes related to Zn uptake. Knockout of the iron or Zn transporter genes OsIRT1, OsIRT2, or OsZIP9 did not affect the Zn promotional effect on Cd translocation. Knockout of the manganese/Cd transporter gene OsNRAMP5 greatly reduced Cd uptake but did not affect the Zn promotional effect. Variation in the tonoplast transporter gene OsHMA3 affected Cd translocation but did not change the Zn promotional effect. Knockout of the Zn/Cd transporter gene OsHMA2 not only decreased Cd and Zn translocation, but also abolished the Zn promotional effect. Increased expression of OsHMA2 under high Zn conditions supports the hypothesis that this transporter participates in the promotional effect of Zn on Cd translocation. The results also show that OsIRT1, OsIRT2, and OsZIP9 made only small contributions to Cd uptake under low Zn conditions but not under high Zn conditions, whereas the dominant role of OsNRAMP5 in Cd uptake diminished under low Zn conditions.
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Affiliation(s)
- Jia-Dong Chang
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Sheng Huang
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki 710-0046, Japan
| | - Indi Wiseno
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki 710-0046, Japan
| | - Fu-Qing Sui
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Fan Feng
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Luqing Zheng
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki 710-0046, Japan
| | - Fang-Jie Zhao
- National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
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9
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Zhao F, Ding X, Liu Z, Yan X, Chen Y, Jiang Y, Chen S, Wang Y, Kang T, Xie C, He M, Zheng J. Application of CRISPR/Cas9-based genome editing in ecotoxicology. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122458. [PMID: 37633433 DOI: 10.1016/j.envpol.2023.122458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
Chemicals are widely used and released into the environment, and their degradation, accumulation, migration, and transformation processes in the environment can pose a threat to the ecosystem. The advancement in analytical methods with high-throughput screening of biomolecules has revolutionized the way toxicologists used to explore the effects of chemicals on organisms. CRISPR/Cas is a newly developed tool, widely used in the exploration of basic science and biologically engineered products given its high efficiency and low cost. For example, it can edit target genes efficiently, and save loss of the crop yield caused by environmental pollution as well as gain a better understanding of the toxicity mechanisms from various chemicals. This review briefly introduces the development history of CRISPR/Cas and summarizes the current application of CRISPR/Cas in ecotoxicology, including its application on improving crop yield and drug resistance towards agricultural pollution, antibiotic pollution and other threats. The benefits by applying the CRISPR/Cas9 system in conventional toxicity mechanism studies are fully demonstrated here together with its foreseeable expansions in other area of ecotoxicology. Finally, the prospects and disadvantages of CRISPR/Cas system in the field of ecotoxicology are also discussed.
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Affiliation(s)
- Fang Zhao
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China; State Environmental Protection Key laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences. Ministry of Environmental Protection, Guangzhou, China; School of Public Health, Guizhou Medical University, Guizhou, China
| | - Xiaofan Ding
- Faculty of Health Sciences, University of Macau, Taipa, Macao SAR, China
| | - Zimeng Liu
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Xiao Yan
- State Environmental Protection Key laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences. Ministry of Environmental Protection, Guangzhou, China
| | - Yanzhen Chen
- Faculty of Health Sciences, University of Macau, Taipa, Macao SAR, China
| | - Yaxin Jiang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Shunjie Chen
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Yuanfang Wang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Tingting Kang
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China
| | - Chun Xie
- School of Public Health, Guizhou Medical University, Guizhou, China
| | - Mian He
- Scientific Research Center, The Seventh Affiliated Hospital of Sun Yat-sen University, Shenzhen, China.
| | - Jing Zheng
- State Environmental Protection Key laboratory of Environmental Pollution Health Risk Assessment, South China Institute of Environmental Sciences. Ministry of Environmental Protection, Guangzhou, China
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10
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Sunitha kumari K, Devi SP, Ranjithkumar R, Djearamane S, Tey LH, Wong LS, Kayarohanam S, Arumugam N, Almansour AI, Perumal K. Organic Remobilization of zinc and phosphorus availability to plants by application of mineral solubilizing bacteria Pseudomonas aeruginosa. Heliyon 2023; 9:e22128. [PMID: 38053868 PMCID: PMC10694168 DOI: 10.1016/j.heliyon.2023.e22128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 10/22/2023] [Accepted: 11/05/2023] [Indexed: 12/07/2023] Open
Abstract
Incessant utilization of chemical fertilizers leads to the accumulation of minerals in the soil, rendering them unavailable to plants. Unaware of the mineral reserves present in the soil, farming communities employ chemical fertilizers once during each cultivation, a practice that causes elevated levels of insoluble minerals within the soil. The use of biofertilizers on the other hand, reduces the impact of chemical fertilizers through the action of microorganisms in the product, which dissolves minerals and makes them readily available for plant uptake, helping to create a sustainable environment for continuous agricultural production. In the current investigation, a field trial employing Arachis hypogaea L was conducted to evaluate the ability of Pseudomonas aeruginosa to enhance plant growth and development by solubilizing minerals present in the soil (such as zinc and phosphorus). A Randomized Complete Block Design (RCBD) included five different treatments as T1: Un inoculated Control; T2: Seeds treated with a liquid formulation of P. aeruginosa; T3: Seeds treated with a liquid formulation of P. aeruginosa and the soil amended with organic manure (farmyard); T4: Soil amended with organic manure (farmyard) alone; T5: Seeds treated with lignite (solid) based formulation of P. aeruginosa were used for the study. Efficacy was determined based on the plant's morphological characters and mineral contents (Zn and P) of plants and soil. Survival of P. aeruginosa in the field was validated using Antibiotic Intrinsic patterns (AIP). The results indicated that the combination treatment of P. aeruginosa liquid formulation and organic fertilizer (farmyard) (T3) produced the highest biometric parameters and mineral (Zn and P) content of the groundnut plants and the soil. This outcome is likely attributed to the mineral solubilizing capability of P. aeruginosa. Furthermore, the presence of farmyard manure increased the metabolic activity of P. aeruginosa by inducing its heterotrophic activity, leading to higher mineral content in T3 soil compared to other soil treatments. The AIP data confirmed the presence of the applied liquid inoculant by exhibiting a similar intrinsic pattern between the in vitro isolate and the isolate obtained from the fields. In summary, the Zn and P solubilization ability of P. aeruginosa facilitates the conversion of soil-unavailable mineral form into a form accessible to plants. It further proposes the utilization of the liquid formulation of P. aeruginosa as a viable solution to mitigate the challenges linked to solid-based biofertilizers and the reliance on mineral-based chemical fertilizers.
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Affiliation(s)
- K. Sunitha kumari
- Department of Botany, PSGR Krishnammal College for Women, Peelamedu, Coimbatore-641 004, Tamil Nadu, India
| | - S.N. Padma Devi
- Department of Botany, PSGR Krishnammal College for Women, Peelamedu, Coimbatore-641 004, Tamil Nadu, India
| | | | - Sinouvassane Djearamane
- Biomedical Research Unit and Lab Animal Research Centre, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 602 105, India
- Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Malaysia
| | - Lai-Hock Tey
- Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Malaysia
| | - Ling Shing Wong
- Faculty of Health and Life Sciences, INTI International University, Nilai, 71800 Malaysia
| | - Saminathan Kayarohanam
- Faculty of Bioeconomics and Health Sciences, Geomatika University Malaysia, Kuala Lumpur 54200, Malaysia
| | - Natarajan Arumugam
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Abdulrahman I. Almansour
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Karthikeyan Perumal
- Department of Chemistry and Biochemistry, The Ohio State University, 151 W. Woodruff Ave, Columbus, OH 43210, USA
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11
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Haque FU, Faridullah F, Irshad M, Bacha AUR, Ullah Z, Fawad M, Hafeez F, Iqbal A, Nazir R, Alrefaei AF, Almutairi MH. Distribution and Speciation of Trace Elements in Soils of Four Land-Use Systems. LAND 2023; 12:1894. [DOI: 10.3390/land12101894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Land use has a greater impact on trace element (TE) concentration present in soils. In mountainous regions of the western Himalayas, some dominating geogenic and human-dependent anthropogenic factors are involved in the spatial distribution of TEs in various land uses. Soil samples were collected from permafrost, pasture, forest, and agricultural land-use systems of Babusar Valley and Fairy Meadows in Diamer districts and the Rama region in Astore Districts in replications for investigation of three TEs, i.e., copper (Cu), zinc (Zn), and nickel (Ni). These samples were analyzed for exchangeable, adsorbed, organically bound, carbonate precipitated, and residual forms. Significant differences among these TEs were observed. Differences in the levels of TEs within soil samples were observed to be influenced by land usage patterns. The physicochemical properties of soil samples were also investigated. Additionally, the total metals (Ni, Zn, Cu) were extracted and their concentrations were measured in all samples. The concentration of soil TEs was observed in the following order: adsorbed < organically bound < exchangeable < residual < carbonate precipitated form across all the land uses. The results indicate that the contents of TEs (Ni, Zn, Cu) in agricultural soils were greater than in the permafrost pasture and forest soil samples. The total TE concentration varied as Zn > Ni > Cu irrespective of the area and land uses. We believe this work will open avenues for researchers to explore TEs in various regions of the world.
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Affiliation(s)
- Farid Ul Haque
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Faridullah Faridullah
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Muhammad Irshad
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Aziz-Ur-Rahim Bacha
- State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, China
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
| | - Zahid Ullah
- State Key Laboratory of Biogeology and Environmental Geology, School of Environmental Studies, China University of Geosciences, Wuhan 430074, China
| | - Muhammad Fawad
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Farhan Hafeez
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Akhtar Iqbal
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Rashid Nazir
- Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad 22060, Pakistan
| | - Abdulwahed Fahad Alrefaei
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mikhlid H. Almutairi
- Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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12
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Ma Y, Wen Y, Wang C, Wu Z, Yuan X, Xiong Y, Chen K, He L, Zhang Y, Wang Z, Li L, Yang Z, Sun Y, Chen Z, Ma J. ZIP Genes Are Involved in the Retransfer of Zinc Ions during the Senescence of Zinc-Deficient Rice Leaves. Int J Mol Sci 2023; 24:13989. [PMID: 37762290 PMCID: PMC10531140 DOI: 10.3390/ijms241813989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Rice lacks sufficient amounts of zinc despite its vitality for human health. Leaf senescence enables redistribution of nutrients to other organs, yet Zn retransfer during deficiency is often overlooked. In this hydroponic experiment, we studied the effect of Zn deficiency on rice seedlings, focusing on the fourth leaf under control and deficient conditions. Growth phenotype analysis showed that the growth of rice nodal roots was inhibited in Zn deficiency, and the fourth leaf exhibited accelerated senescence and increased Zn ion transfer. Analyzing differentially expressed genes showed that Zn deficiency regulates more ZIP family genes involved in Zn ion retransfer. OsZIP3 upregulation under Zn-deficient conditions may not be induced by Zn deficiency, whereas OsZIP4 is only induced during Zn deficiency. Gene ontology enrichment analysis showed that Zn-deficient leaves mobilized more biological pathways (BPs) during aging, and the enrichment function differed from that of normal aging leaves. The most apparent "zinc ion transport" BP was stronger than that of normal senescence, possibly due to Zn-deficient leaves mobilizing large amounts of BP related to lipid metabolism during senescence. These results provide a basis for further functional analyses of genes and the study of trace element transfer during rice leaf senescence.
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Affiliation(s)
- Yangming Ma
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yanfang Wen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Cheng Wang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Ziniu Wu
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Xiaojuan Yuan
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Ying Xiong
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Kairui Chen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Limei He
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yue Zhang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhonglin Wang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Leilei Li
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhiyuan Yang
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Yongjian Sun
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Zhongkui Chen
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
| | - Jun Ma
- Rice Cultivation Laboratory, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, China
- Crop Ecophysiology and Cultivation Key Laboratory of Sichuan Province, Chengdu 611130, China
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13
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Mohammed KFA, Kaul T, Agrawal PK, Thangaraj A, Kaul R, Sopory SK. Function identification and characterization of Oryza sativa ZRT and IRT-like proteins computationally for nutrition and biofortification in rice. J Biomol Struct Dyn 2023; 41:7490-7510. [PMID: 36111599 DOI: 10.1080/07391102.2022.2118169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 08/19/2022] [Indexed: 10/14/2022]
Abstract
Zinc plays a very critical role and function in all organisms. Its deficiency can cause a serious issue. In Oryza sativa, the ZRT/IRT transporter-like proteins play a role in the zinc metal uptake and transport. Few OsZIPs genes have been validated and characterized for their biological functions and most of OsZIPs are not well physiologically, biochemically and phenotypically characterized. In the current study, they analyzed for their function through subcellular localization, phylogenetic analysis, homology modeling, expression analysis, protein-protein interaction (PPI) network prediction, and prediction of their binding sites. Hierarchical clustering of OsZIP genes based on different anatomical parts and developmental stages also orthologs prediction was identified. The presence of SNPs, SSRs, ESTs, FSTs, MPSS, and SAGE tags were analyzed for useful development of markers. SNPs were identified in all OsZIPs genes and each gene was further classified based on their number and position in the 3'UTR and 5'UTR regions of the gene-specific sequences. Binding clusters and their location on the protein sequences were predicted. We found Changing in residues number and position which were due to partial overlapping and sequence alignment, but they share the same mechanism of binding and transporting Zinc. A wide range of CRISPR Cas9 gRNAs was designed based on single nucleotide polymorphism (SNP) for each OsZIP transporter gene for well-function identification and characterization with genome-wide association studies. Hence this study would provide useful information, understanding, and predicting molecular insights for the future studies that will help for improvement of nutritional quality of rice varieties.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Khaled Fathy Abdelmotelb Mohammed
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
- Genetics Department, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
| | - Tanushri Kaul
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Pawan Kumar Agrawal
- Plant Breeding, Main Building, Odisha University of Agriculture and Technology, Bhubaneswar, India
| | - Arulprakash Thangaraj
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Rashmi Kaul
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Sudhir K Sopory
- International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
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14
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Liu J, Feng X, Qiu G, Li H, Wang Y, Chen X, Fu Q, Guo B. Inhibition Roles of Calcium in Cadmium Uptake and Translocation in Rice: A Review. Int J Mol Sci 2023; 24:11587. [PMID: 37511349 PMCID: PMC10380254 DOI: 10.3390/ijms241411587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 07/30/2023] Open
Abstract
Cadmium (Cd) contamination in rice grains is posing a significant threat to global food security. To restrict the transport of Cd in the soil-rice system, an efficient way is to use the ionomics strategy. Since calcium (Ca) and Cd have similar ionic radii, their uptake and translocation may be linked in multiple aspects in rice. However, the underlying antagonistic mechanisms are still not fully understood. Therefore, we first summarized the current knowledge on the physiological and molecular footprints of Cd translocation in plants and then explored the potential antagonistic points between Ca and Cd in rice, including exchange adsorption on roots, plant cell-wall composition, co-transporter gene expression, and transpiration inhibition. This review provides suggestions for Ca/Cd interaction studies on rice and introduces ionomics research as a means of better controlling the accumulation of Cd in plants.
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Affiliation(s)
- Junli Liu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Xiaoyu Feng
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Gaoyang Qiu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
- Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Hua Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Yuan Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Xiaodong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Qinglin Fu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
| | - Bin Guo
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Environment, Resource, Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; (J.L.); (X.F.); (G.Q.); (H.L.); (Y.W.); (X.C.); (Q.F.)
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15
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Ning M, Liu SJ, Deng F, Huang L, Li H, Che J, Yamaji N, Hu F, Lei GJ. A vacuolar transporter plays important roles in zinc and cadmium accumulation in rice grain. THE NEW PHYTOLOGIST 2023. [PMID: 37366232 DOI: 10.1111/nph.19070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 05/23/2023] [Indexed: 06/28/2023]
Abstract
Rice grain is a poor dietary source of zinc (Zn) but the primary source of cadmium (Cd) for humans; however, the molecular mechanisms for their accumulation in rice grain remain incompletely understood. This study functionally characterized a tonoplast-localized transporter, OsMTP1. OsMTP1 was preferentially expressed in the roots, aleurone layer, and embryo of seeds. OsMTP1 knockout decreased Zn concentration in the root cell sap, roots, aleurone layer and embryo, and subsequently increased Zn concentration in shoots and polished rice (endosperm) without yield penalty. OsMTP1 haplotype analysis revealed elite alleles associated with increased Zn level in polished rice, mostly because of the decreased OsMTP1 transcripts. OsMTP1 expression in yeast enhanced Zn tolerance but did not affect that of Cd. While OsMTP1 knockout resulted in decreased uptake, translocation and accumulation of Cd in plant and rice grain, which could be attributed to the indirect effects of altered Zn accumulation. Our results suggest that rice OsMTP1 primarily functions as a tonoplast-localized transporter for sequestrating Zn into vacuole. OsMTP1 knockout elevated Zn concentration but prevented Cd deposition in polished rice without yield penalty. Thus, OsMTP1 is a candidate gene for enhancing Zn level and reducing Cd level in rice grains.
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Affiliation(s)
- Min Ning
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Biology and Germplasm Innovation of Perennial Rice, Key Laboratory of Crop Quality Improvement of Yunnan Higher Education Institutes, School of Agriculture, Yunnan University, Kunming, 650500, China
| | - Shi Jia Liu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Biology and Germplasm Innovation of Perennial Rice, Key Laboratory of Crop Quality Improvement of Yunnan Higher Education Institutes, School of Agriculture, Yunnan University, Kunming, 650500, China
| | - Fenglin Deng
- MARA Key Laboratory of Sustainable Crop Production in the Middle Reaches of the Yangtze River (Co-construction by Ministry and Province), College of Agriculture, Yangtze University, Jingzhou, 434025, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Liyu Huang
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Biology and Germplasm Innovation of Perennial Rice, Key Laboratory of Crop Quality Improvement of Yunnan Higher Education Institutes, School of Agriculture, Yunnan University, Kunming, 650500, China
| | - Hu Li
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Biology and Germplasm Innovation of Perennial Rice, Key Laboratory of Crop Quality Improvement of Yunnan Higher Education Institutes, School of Agriculture, Yunnan University, Kunming, 650500, China
| | - Jing Che
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 210008, China
| | - Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
| | - Fengyi Hu
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Biology and Germplasm Innovation of Perennial Rice, Key Laboratory of Crop Quality Improvement of Yunnan Higher Education Institutes, School of Agriculture, Yunnan University, Kunming, 650500, China
| | - Gui Jie Lei
- State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Key Laboratory of Biology and Germplasm Innovation of Perennial Rice, Key Laboratory of Crop Quality Improvement of Yunnan Higher Education Institutes, School of Agriculture, Yunnan University, Kunming, 650500, China
- Institute of Plant Science and Resources, Okayama University, Kurashiki, 710-0046, Japan
- Institute of International Rivers and Eco-security, Yunnan University, Kunming, 650500, China
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16
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Chen X, Zhao Y, Zhong Y, Chen J, Qi X. Deciphering the functional roles of transporter proteins in subcellular metal transportation of plants. PLANTA 2023; 258:17. [PMID: 37314548 DOI: 10.1007/s00425-023-04170-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/31/2023] [Indexed: 06/15/2023]
Abstract
MAIN CONCLUSION The role of transporters in subcellular metal transport is of great significance for plants in coping with heavy metal stress and maintaining their proper growth and development. Heavy metal toxicity is a serious long-term threat to plant growth and agricultural production, becoming a global environmental concern. Excessive heavy metal accumulation not only damages the biochemical and physiological functions of plants but also causes chronic health hazard to human beings through the food chain. To deal with heavy metal stress, plants have evolved a series of elaborate mechanisms, especially a variety of spatially distributed transporters, to strictly regulate heavy metal uptake and distribution. Deciphering the subcellular role of transporter proteins in controlling metal absorption, transport and separation is of great significance for understanding how plants cope with heavy metal stress and improving their adaptability to environmental changes. Hence, we herein introduce the detrimental effects of excessive common essential and non-essential heavy metals on plant growth, and describe the structural and functional characteristics of transporter family members, with a particular emphasis on their roles in maintaining heavy metal homeostasis in various organelles. Besides, we discuss the potential of controlling transporter gene expression by transgenic approaches in response to heavy metal stress. This review will be valuable to researchers and breeders for enhancing plant tolerance to heavy metal contamination.
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Affiliation(s)
- Xingqi Chen
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China
| | - Yuanchun Zhao
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China
| | - Yuqing Zhong
- Environmental Monitoring Station of Suzhou City, Suzhou, 215004, China
| | - Jiajia Chen
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China
| | - Xin Qi
- School of Chemistry and Life Sciences, Suzhou University of Science and Technology, Suzhou, 215011, China.
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17
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Pang C, Chai J, Zhu P, Shanklin J, Liu Q. Structural mechanism of intracellular autoregulation of zinc uptake in ZIP transporters. Nat Commun 2023; 14:3404. [PMID: 37296139 PMCID: PMC10256678 DOI: 10.1038/s41467-023-39010-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
Zinc is an essential micronutrient that supports all living organisms through regulating numerous biological processes. However, the mechanism of uptake regulation by intracellular Zn2+ status remains unclear. Here we report a cryo-electron microscopy structure of a ZIP-family transporter from Bordetella bronchiseptica at 3.05 Å resolution in an inward-facing, inhibited conformation. The transporter forms a homodimer, each protomer containing nine transmembrane helices and three metal ions. Two metal ions form a binuclear pore structure, and the third ion is located at an egress site facing the cytoplasm. The egress site is covered by a loop, and two histidine residues on the loop interact with the egress-site ion and regulate its release. Cell-based Zn2+ uptake and cell growth viability assays reveal a negative regulation of Zn2+ uptake through sensing intracellular Zn2+ status using a built-in sensor. These structural and biochemical analyses provide mechanistic insight into the autoregulation of zinc uptake across membranes.
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Affiliation(s)
- Changxu Pang
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA
| | - Jin Chai
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA
| | - Ping Zhu
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA
| | - John Shanklin
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA
| | - Qun Liu
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA.
- NSLS-II, Brookhaven National Laboratory, Upton, NY, USA.
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18
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Palanog AD, Nha CT, Descalsota-Empleo GIL, Calayugan MI, Swe ZM, Amparado A, Inabangan-Asilo MA, Hernandez JE, Sta. Cruz PC, Borromeo TH, Lalusin AG, Mauleon R, McNally KL, Swamy BPM. Molecular dissection of connected rice populations revealed important genomic regions for agronomic and biofortification traits. FRONTIERS IN PLANT SCIENCE 2023; 14:1157507. [PMID: 37035067 PMCID: PMC10073715 DOI: 10.3389/fpls.2023.1157507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 02/20/2023] [Indexed: 06/19/2023]
Abstract
Breeding staple crops with increased micronutrient concentration is a sustainable approach to address micronutrient malnutrition. We carried out Multi-Cross QTL analysis and Inclusive Composite Interval Mapping for 11 agronomic, yield and biofortification traits using four connected RILs populations of rice. Overall, MC-156 QTLs were detected for agronomic (115) and biofortification (41) traits, which were higher in number but smaller in effects compared to single population analysis. The MC-QTL analysis was able to detect important QTLs viz: qZn5.2, qFe7.1, qGY10.1, qDF7.1, qPH1.1, qNT4.1, qPT4.1, qPL1.2, qTGW5.1, qGL3.1 , and qGW6.1 , which can be used in rice genomics assisted breeding. A major QTL (qZn5.2 ) for grain Zn concentration has been detected on chromosome 5 that accounted for 13% of R2. In all, 26 QTL clusters were identified on different chromosomes. qPH6.1 epistatically interacted with qZn5.1 and qGY6.2 . Most of QTLs were co-located with functionally related candidate genes indicating the accuracy of QTL mapping. The genomic region of qZn5.2 was co-located with putative genes such as OsZIP5, OsZIP9, and LOC_OS05G40490 that are involved in Zn uptake. These genes included polymorphic functional SNPs, and their promoter regions were enriched with cis-regulatory elements involved in plant growth and development, and biotic and abiotic stress tolerance. Major effect QTL identified for biofortification and agronomic traits can be utilized in breeding for Zn biofortified rice varieties.
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Affiliation(s)
- Alvin D. Palanog
- Rice Breeding Innovations Platform, International Rice Research Institute, Los Baños, Laguna, Philippines
- College of Agriculture and Food Science, University of the Philippines, Los Baños, Laguna, Philippines
- PhilRice Negros Branch Station, Philippine Rice Research Institute, Murcia, Negros Occidental, Philippines
| | | | | | - Mark Ian Calayugan
- College of Agriculture and Food Science, University of the Philippines, Los Baños, Laguna, Philippines
| | - Zin Mar Swe
- Rice Breeding Innovations Platform, International Rice Research Institute, Los Baños, Laguna, Philippines
| | - Amery Amparado
- Rice Breeding Innovations Platform, International Rice Research Institute, Los Baños, Laguna, Philippines
| | - Mary Ann Inabangan-Asilo
- Rice Breeding Innovations Platform, International Rice Research Institute, Los Baños, Laguna, Philippines
| | - Jose E. Hernandez
- College of Agriculture and Food Science, University of the Philippines, Los Baños, Laguna, Philippines
| | - Pompe C. Sta. Cruz
- College of Agriculture and Food Science, University of the Philippines, Los Baños, Laguna, Philippines
| | - Teresita H. Borromeo
- College of Agriculture and Food Science, University of the Philippines, Los Baños, Laguna, Philippines
| | - Antonio G. Lalusin
- College of Agriculture and Food Science, University of the Philippines, Los Baños, Laguna, Philippines
| | - Ramil Mauleon
- Rice Breeding Innovations Platform, International Rice Research Institute, Los Baños, Laguna, Philippines
- College of Agriculture, University of Southern Mindanao, Kabacan, North Cotabato, Philippines
| | - Kenneth L. McNally
- Rice Breeding Innovations Platform, International Rice Research Institute, Los Baños, Laguna, Philippines
| | - B. P. Mallikarjuna Swamy
- Rice Breeding Innovations Platform, International Rice Research Institute, Los Baños, Laguna, Philippines
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19
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Tong M, Liu X, Guan J, Lin Y, Zhou A, Qiao K. Novel biofortification candidate: MTP1 increases microelement contents and decreases toxic heavy metal accumulation in grains. CHEMOSPHERE 2023; 318:137967. [PMID: 36731661 DOI: 10.1016/j.chemosphere.2023.137967] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 01/16/2023] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Decreases in microelement contents and increases in toxic element levels seriously affect crop growth and human health. Thus, improving the elemental content of food crops is an important environmental issue for enhancing crop production and quality. Previous research showed that metal tolerance protein 1 (MTP1) is localized at the vacuole membrane, wherein it mediates the translocation of heavy metal ions. Therefore, LmMTP1 was isolated from annual ryegrass (Lolium multiflorum). Real-time quantitative PCR analyses revealed LmMTP1 expression increased significantly in the roots after Zn, Co, and Cd treatments. Confocal microscopy images indicated LmMTP1 was localized at the vacuole membrane. The expression of LmMTP1 in transgenic yeast and rice resulted in increased Zn, Co, and Cd tolerance. The examination of heavy metal contents detected increases in the Zn and Co contents, but decreases in the Cd contents, of yeast and rice. Moreover, the grains of LmMTP1-expressing transgenic rice had higher Zn/Co contents and lower Cd contents than wild-type rice grains. These results imply that LmMTP1 influences Zn, Co, and Cd tolerance and accumulation. Furthermore, LmMTP1 might be a novel biofortification-related candidate gene useful for improving the storage of essential elements and eliminating toxic heavy metals from crops.
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Affiliation(s)
- Mingyue Tong
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Xiang Liu
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jing Guan
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Yuanyuan Lin
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Aimin Zhou
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China
| | - Kun Qiao
- College of Horticulture and Landscape Architecture, Northeast Agricultural University, Harbin, 150030, PR China.
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20
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Rodrigues WFC, Lisboa ABP, Lima JE, Ricachenevsky FK, Del-Bem LE. Ferrous iron uptake via IRT1/ZIP evolved at least twice in green plants. THE NEW PHYTOLOGIST 2023; 237:1951-1961. [PMID: 36626937 DOI: 10.1111/nph.18661] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 11/29/2022] [Indexed: 06/17/2023]
Abstract
Iron (Fe) is essential for virtually all organisms, being irreplaceable because of its electrochemical properties that enable many biochemical processes, including photosynthesis. Besides its abundance, Fe is generally found in the poorly soluble form of ferric iron (Fe3+ ), while most plants uptake the soluble form Fe2+ . The model angiosperm Arabidopsis thaliana, for example, captures Fe through a mechanism that lowers rhizosphere pH through proton pumping that increases Fe3+ solubility, which is then reduced by a membrane-bound reductase and transported into the cell by the zinc-regulated, iron-regulated transporter-like protein (ZIP) family protein AtIRT1. ZIP proteins are transmembrane transporters of divalent metals such as Fe2+ , Zn2+ , Mn2+ , and Cd2+ . In this work, we investigated the evolution of functional homologs of IRON-REGULATED TRANSPORTER 1/ZIP in the supergroup Archaeplastida (Viridiplantae + Rhodophyta + Glaucophyta) using 51 genomes of diverse lineages. Our analyses suggest that Fe is acquired through deeply divergent ZIP proteins in land plants and chlorophyte green algae, indicating that Fe2+ uptake by ZIP proteins evolved independently at least twice throughout green plant evolution. Our results indicate that the archetypical IRON-REGULATED TRANSPORTER (IRT) proteins from angiosperms likely emerged before the origin of land plants during early streptophyte algae terrestrialization, a process that required the evolution of Fe acquisition in terrestrial subaerial settings.
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Affiliation(s)
- Wenderson Felipe Costa Rodrigues
- Graduate Program in Bioinformatics, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
- Graduate Program in Plant Biology, Department of Botany, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
- Del-Bem Lab, Department of Botany, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
| | - Ayrton Breno P Lisboa
- Graduate Program in Bioinformatics, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
- Del-Bem Lab, Department of Botany, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
| | - Joni Esrom Lima
- Department of Botany, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
| | - Felipe Klein Ricachenevsky
- Department of Botany, Institute of Biosciences (IB), Federal University of Rio Grande do Sul (UFRGS), 91501-900, Porto Alegre, Brazil
- Graduate Program in Cellular and Molecular Biology, Center for Biotechnology, Federal University of Rio Grande do Sul (UFRGS), 91501-900, Porto Alegre, Brazil
| | - Luiz-Eduardo Del-Bem
- Graduate Program in Bioinformatics, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
- Del-Bem Lab, Department of Botany, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
- Department of Botany, Institute of Biological Sciences (ICB), Federal University of Minas Gerais (UFMG), 31270-901, Belo Horizonte, Brazil
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI, 48824, USA
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21
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Transcriptional Regulatory Network of Plant Cadmium Stress Response. Int J Mol Sci 2023; 24:ijms24054378. [PMID: 36901809 PMCID: PMC10001906 DOI: 10.3390/ijms24054378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/14/2023] [Accepted: 02/17/2023] [Indexed: 02/25/2023] Open
Abstract
Cadmium (Cd) is a non-essential heavy metal with high toxicity to plants. Plants have acquired specialized mechanisms to sense, transport, and detoxify Cd. Recent studies have identified many transporters involved in Cd uptake, transport, and detoxification. However, the complex transcriptional regulatory networks involved in Cd response remain to be elucidated. Here, we provide an overview of current knowledge regarding transcriptional regulatory networks and post-translational regulation of the transcription factors involved in Cd response. An increasing number of reports indicate that epigenetic regulation and long non-coding and small RNAs are important in Cd-induced transcriptional responses. Several kinases play important roles in Cd signaling that activate transcriptional cascades. We also discuss the perspectives to reduce grain Cd content and improve crop tolerance to Cd stress, which provides a theoretical reference for food safety and the future research of plant varieties with low Cd accumulation.
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22
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Tang Z, Wang HQ, Chen J, Chang JD, Zhao FJ. Molecular mechanisms underlying the toxicity and detoxification of trace metals and metalloids in plants. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:570-593. [PMID: 36546407 DOI: 10.1111/jipb.13440] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Plants take up a wide range of trace metals/metalloids (hereinafter referred to as trace metals) from the soil, some of which are essential but become toxic at high concentrations (e.g., Cu, Zn, Ni, Co), while others are non-essential and toxic even at relatively low concentrations (e.g., As, Cd, Cr, Pb, and Hg). Soil contamination of trace metals is an increasing problem worldwide due to intensifying human activities. Trace metal contamination can cause toxicity and growth inhibition in plants, as well as accumulation in the edible parts to levels that threatens food safety and human health. Understanding the mechanisms of trace metal toxicity and how plants respond to trace metal stress is important for improving plant growth and food safety in contaminated soils. The accumulation of excess trace metals in plants can cause oxidative stress, genotoxicity, programmed cell death, and disturbance in multiple physiological processes. Plants have evolved various strategies to detoxify trace metals through cell-wall binding, complexation, vacuolar sequestration, efflux, and translocation. Multiple signal transduction pathways and regulatory responses are involved in plants challenged with trace metal stresses. In this review, we discuss the recent progress in understanding the molecular mechanisms involved in trace metal toxicity, detoxification, and regulation, as well as strategies to enhance plant resistance to trace metal stresses and reduce toxic metal accumulation in food crops.
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Affiliation(s)
- Zhong Tang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Han-Qing Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jie Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jia-Dong Chang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Fang-Jie Zhao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China
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23
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Hou J, Chen H, Zhang K, Liu W, Cao C, Ruan Y, Deng Y, Liu Y, Yuan X, Sun C, Fu Y. The GZnC1 variant from common wild rice influences grain Zn content. PLANT MOLECULAR BIOLOGY 2023; 111:263-273. [PMID: 36414883 DOI: 10.1007/s11103-022-01325-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Zinc (Zn) deficiency, caused by inadequate Zn intake in the human diet, has serious health implications. Rice (Oryza sativa) is the staple food in regions with a high incidence of Zn deficiency, so raising Zn levels in rice grain could help alleviate Zn deficiency. The wild relatives of cultivated rice vary widely in grain Zn content and thus are suitable resources for improving this trait. However, few loci underlying grain Zn content have been identified in wild rice relatives. Here, we identified a major quantitative trait locus for grain Zn content, Grain Zn Content 1 (qGZnC1), from Yuanjiang common wild rice (Oryza rufipogon Griff.) using map-based cloning. Down-regulating GZnC1 expression reduced the grain Zn content, whereas the presence of GZnC1 had the opposite effect, indicating that GZnC1 is involved in grain Zn content in rice. Notably, GZnC1 is identical to a previously reported gene, EMBRYO SAC ABORTION 1 (ESA1), involved in seed setting rate. The mutation in GZnC1/ESA1 at position 1819 (T1819C) causes delayed termination of protein translation. In addition, GZnC1 is specifically expressed in developing panicles. Several genes related to Zn-transporter genes were up-regulated in the presence of GZnC1. Our results suggest that GZnC1 activates Zn transporters to promote Zn distribution in panicles. Our work thus sheds light on the genetic mechanism of Zn accumulation in rice grain and provides a new genetic resource for improving Zn content in rice.
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Affiliation(s)
- Jingjing Hou
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Hao Chen
- Institute of Crop Sciences, Fujian Academy of Agricultural Sciences; Fujian Engineering Research Center for Characteristic Upland Crops Breeding; Fujian Engineering Laboratory of Crop Molecular Breeding, Fuzhou, 350013, China
| | - Kun Zhang
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Wenjing Liu
- Institute of Agricultural Quality Standards and Testing Technology Research, Fujian Academy of Agricultural Sciences; Fujian Key Laboratory of Agro-Products Quality and Safety, Fuzhou, 350003, China
| | - Caihong Cao
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Yini Ruan
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Yanyan Deng
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Yaxin Liu
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Xuzhao Yuan
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Chuanqing Sun
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Yongcai Fu
- MOE Key Laboratory of Crop Heterosis and Utilization, National Center for Evaluation of Agricultural Wild Plants (Rice), Beijing Key Laboratory of Crop Genetic Improvement, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China.
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24
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Krishna TPA, Maharajan T, Ceasar SA. The Role of Membrane Transporters in the Biofortification of Zinc and Iron in Plants. Biol Trace Elem Res 2023; 201:464-478. [PMID: 35182385 DOI: 10.1007/s12011-022-03159-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 02/11/2022] [Indexed: 01/11/2023]
Abstract
Over three billion people suffer from various health issues due to the low supply of zinc (Zn) and iron (Fe) in their food. Low supply of micronutrients is the main cause of malnutrition and biofortification could help to solve this issue. Understanding the molecular mechanisms of biofortification is challenging. The membrane transporters are involved in the uptake, transport, storage, and redistribution of Zn and Fe in plants. These transporters are also involved in biofortification and help to load the Zn and Fe into the endosperm of the seeds. Very little knowledge is available on the role and functions of membrane transporters involved in seed biofortification. Understanding the mechanism and role of membrane transporters could be helpful to improve biofortification. In this review, we provide the details on membrane transporters involved in the uptake, transport, storage, and redistribution of Zn and Fe. We also discuss available information on transporters involved in seed biofortification. This review will help plant breeders and molecular biologists understand the importance and implications of membrane transporters for seed biofortification.
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Affiliation(s)
- T P Ajeesh Krishna
- Department of Biosciences, Rajagiri College of Social Sciences, Kochi, 683104, Kerala, India
| | - T Maharajan
- Department of Biosciences, Rajagiri College of Social Sciences, Kochi, 683104, Kerala, India
| | - S Antony Ceasar
- Department of Biosciences, Rajagiri College of Social Sciences, Kochi, 683104, Kerala, India.
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25
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Sun A, Wang WX. Insights into the kinetic regulation of Zn bioaccumulation at trace levels: Lighting up Saccharomycescerevisiae. CHEMOSPHERE 2022; 308:136318. [PMID: 36075365 DOI: 10.1016/j.chemosphere.2022.136318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/24/2022] [Accepted: 08/31/2022] [Indexed: 06/15/2023]
Abstract
Zn displays a double-edged effect by acting both as a micronutrient and a toxic metal, and quantitative analysis of its kinetic flux under low environmental concentrations is critical to understand its intracellular regulation. In the present study, we employed a Zn sensitive model eukaryote, the yeast Saccharomyces cerevisiae, which responded to intracellular Zn levels by increasing its autofluorescence, to quantify Zn influx, transportation between labile and storage pools, and efflux under different Zn exposure levels (<1 μM). We demonstrated that the yeast regulated Zn uptake from the extracellular source by a gradually decreased accumulation following an initial high accumulation rate. The subsequent reduced accumulation rate resulted in a steady-state Zn accumulation at 0.061 and 0.073 μg Zn/μg P as the threshold values for the control yeast and Zn-depleted yeast, respectively, independently of the extracellular Zn concentration. Compared with the control yeast, the Zn-depleted yeast possessed a higher accumulation rate, but the difference of bioaccumulation was maintained at approximately 0.01 μg Zn/μg P under different concentrations of extracellular Zn. In contrast, transportation between labile Zn and storage Zn pools or Zn efflux to the extracellular environment was not obvious after Zn exposure, indicating that the Zn dose was below a basal requirement. Such stabilized Zn accumulation was only induced by controlling the Zn influx at the bio-interface. With the novel monitoring of the kinetic changes of autofluorescence, our study demonstrated a remarkably tight Zn regulation system in yeast, providing enlightenment for Zn homeostasis in eukaryotes under low Zn exposure in aqueous environments.
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Affiliation(s)
- Anqi Sun
- Division of Life Science, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, China; School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China
| | - Wen-Xiong Wang
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, Kowloon, Hong Kong, China; Research Centre for the Oceans and Human Health, City University of Hong Kong Shenzhen Research Institute, Shenzhen, 518057, China.
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26
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Wairich A, Ricachenevsky FK, Lee S. A tale of two metals: Biofortification of rice grains with iron and zinc. FRONTIERS IN PLANT SCIENCE 2022; 13:944624. [PMID: 36420033 PMCID: PMC9677123 DOI: 10.3389/fpls.2022.944624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 10/11/2022] [Indexed: 06/16/2023]
Abstract
Iron (Fe) and zinc (Zn) are essential micronutrients needed by virtually all living organisms, including plants and humans, for proper growth and development. Due to its capacity to easily exchange electrons, Fe is important for electron transport in mitochondria and chloroplasts. Fe is also necessary for chlorophyll synthesis. Zn is a cofactor for several proteins, including Zn-finger transcription factors and redox metabolism enzymes such as copper/Zn superoxide dismutases. In humans, Fe participates in oxygen transport, electron transport, and cell division whereas Zn is involved in nucleic acid metabolism, apoptosis, immunity, and reproduction. Rice (Oryza sativa L.) is one of the major staple food crops, feeding over half of the world's population. However, Fe and Zn concentrations are low in rice grains, especially in the endosperm, which is consumed as white rice. Populations relying heavily on rice and other cereals are prone to Fe and Zn deficiency. One of the most cost-effective solutions to this problem is biofortification, which increases the nutritional value of crops, mainly in their edible organs, without yield reductions. In recent years, several approaches were applied to enhance the accumulation of Fe and Zn in rice seeds, especially in the endosperm. Here, we summarize these attempts involving transgenics and mutant lines, which resulted in Fe and/or Zn biofortification in rice grains. We review rice plant manipulations using ferritin genes, metal transporters, changes in the nicotianamine/phytosiderophore pathway (including biosynthetic genes and transporters), regulators of Fe deficiency responses, and other mutants/overexpressing lines used in gene characterization that resulted in Fe/Zn concentration changes in seeds. This review also discusses research gaps and proposes possible future directions that could be important to increase the concentration and bioavailability of Fe and Zn in rice seeds without the accumulation of deleterious elements. We also emphasize the need for a better understanding of metal homeostasis in rice, the importance of evaluating yield components of plants containing transgenes/mutations under field conditions, and the potential of identifying genes that can be manipulated by gene editing and other nontransgenic approaches.
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Affiliation(s)
- Andriele Wairich
- Graduate Program in Molecular and Cellular Biology, Biotechnology Center, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Felipe K. Ricachenevsky
- Graduate Program in Molecular and Cellular Biology, Biotechnology Center, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
- Department of Botany, Institute of Biosciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Sichul Lee
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, South Korea
- Department of Agricultural Biotechnology, National Institute of Agricultural Science, Jeonju, South Korea
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27
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OsNAC15 Regulates Tolerance to Zinc Deficiency and Cadmium by Binding to OsZIP7 and OsZIP10 in Rice. Int J Mol Sci 2022; 23:ijms231911771. [PMID: 36233067 PMCID: PMC9569620 DOI: 10.3390/ijms231911771] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/26/2022] [Accepted: 09/29/2022] [Indexed: 11/16/2022] Open
Abstract
Zinc (Zn) deficiency and cadmium (Cd) stress are severe threats to the growth and development of plants. Increasing Zn content and/or decreasing Cd content in grain are also important objectives of rice breeding. However, the molecular mechanisms of Zn deficiency tolerance (ZDT) and Cd stress tolerance (CDT) are largely unknown in rice. Here, we report that a NAM/CUC2-like transcription factor, OsNAC15, contributes to ZDT and CDT in rice. Knockout of OsNAC15 reduced ZDT and CDT at the vegetative stage. OsNAC15 expresses in all tissues of different developmental stages, and is repressed by Zn deficiency and induced by Cd stress. OsNAC15 is a functional transcription factor with transactivation and DNA binding activities. Expression analysis of rice ZIP family genes suggested that the knockout of OsNAC15 activates or inhibits their transcriptions under Zn deficiency or Cd stress conditions. The yeast one-hybrid assay, transient transcriptional activity assay using the dual-luciferase reporter system and electrophoretic mobility shift assay demonstrated that OsNAC15 directly binds to the zinc deficiency-responsive element motifs in the promoters of OsZIP7 and OsZIP10 to repress their transcriptions. The OsNAC15–OsZIP7/10 module is an essential foundation for further study on the regulatory mechanisms of ZDT and CDT in rice.
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28
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Ai H, Wu D, Li C, Hou M. Advances in molecular mechanisms underlying cadmium uptake and translocation in rice. FRONTIERS IN PLANT SCIENCE 2022; 13:1003953. [PMID: 36204081 PMCID: PMC9530829 DOI: 10.3389/fpls.2022.1003953] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 08/29/2022] [Indexed: 06/16/2023]
Abstract
The increasing cadmium (Cd) pollution in paddy fields has severely threatened China's ecological and food safety. Cultivation of low Cd accumulation varieties to reduce Cd content in rice or cultivation of Cd-tolerant varieties for phytoremediation are considered effective methods to control Cd pollution in paddy fields. However, the underlying molecular mechanism of Cd absorption and transport by rice plants needs to be deciphered to cultivate these varieties. Here, we summarized the molecular mechanisms underlying Cd absorption and transport in rice, as well as the variation of Cd accumulation among rice varieties, the QTLs related to Cd accumulation in rice, and discusses the direction of future research.
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Affiliation(s)
- Hao Ai
- Center for Crop Biotechnology, College of Agriculture, Anhui Science and Technology University, Fengyang, China
| | - Daxia Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture and Rural Affairs, Nanjing Agricultural University, Nanjing, China
| | - Chunli Li
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Mengmeng Hou
- Shenzhen Branch, Guangdong Laboratory of Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
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Advances in Genes-Encoding Transporters for Cadmium Uptake, Translocation, and Accumulation in Plants. TOXICS 2022; 10:toxics10080411. [PMID: 35893843 PMCID: PMC9332107 DOI: 10.3390/toxics10080411] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/15/2022] [Accepted: 07/20/2022] [Indexed: 12/12/2022]
Abstract
Cadmium (Cd) is a heavy metal that is highly toxic for plants, animals, and human beings. A better understanding of the mechanisms involved in Cd accumulation in plants is beneficial for developing strategies for either the remediation of Cd-polluted soils using hyperaccumulator plants or preventing excess Cd accumulation in the edible parts of crops and vegetables. As a ubiquitous heavy metal, the transport of Cd in plant cells is suggested to be mediated by transporters for essential elements such as Ca, Zn, K, and Mn. Identification of the genes encoding Cd transporters is important for understanding the mechanisms underlying Cd uptake, translocation, and accumulation in either crop or hyperaccumulator plants. Recent studies have shown that the transporters that mediate the uptake, transport, and accumulation of Cd in plants mainly include members of the natural resistance-associated macrophage protein (Nramp), heavy metal-transporting ATPase (HMA), zinc and iron regulated transporter protein (ZIP), ATP-binding cassette (ABC), and yellow stripe-like (YSL) families. Here, we review the latest advances in the research of these Cd transporters and lay the foundation for a systematic understanding underlying the molecular mechanisms of Cd uptake, transport, and accumulation in plants.
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Kong D, Khan SA, Wu H, Liu Y, Ling HQ. Biofortification of iron and zinc in rice and wheat. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:1157-1167. [PMID: 35396901 DOI: 10.1111/jipb.13262] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/08/2022] [Indexed: 06/14/2023]
Abstract
Iron and zinc are critical micronutrients for human health. Approximately two billion people suffer from iron and zinc deficiencies worldwide, most of whom rely on rice (Oryza sativa) and wheat (Triticum aestivum) as staple foods. Therefore, biofortifying rice and wheat with iron and zinc is an important and economical approach to ameliorate these nutritional deficiencies. In this review, we provide a brief introduction to iron and zinc uptake, translocation, storage, and signaling pathways in rice and wheat. We then discuss current progress in efforts to biofortify rice and wheat with iron and zinc. Finally, we provide future perspectives for the biofortification of rice and wheat with iron and zinc.
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Affiliation(s)
- Danyu Kong
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, 332900, Jiangxi, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
| | - Sabaz Ali Khan
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
- Department of Biotechnology, COMSATS University Islamabad-Abbottabad Campus, University Road, Abbottabad, 22060, Pakistan
| | - Huilan Wu
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
| | - Yi Liu
- Lushan Botanical Garden, Chinese Academy of Sciences, Jiujiang, 332900, Jiangxi, China
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
| | - Hong-Qing Ling
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, the Chinese Academy of Sciences, Beijing, 100101, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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31
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Liu B, Yu H, Yang Q, Ding L, Sun F, Qu J, Feng W, Yang Q, Li W, Fu F. Zinc Transporter ZmLAZ1-4 Modulates Zinc Homeostasis on Plasma and Vacuolar Membrane in Maize. FRONTIERS IN PLANT SCIENCE 2022; 13:881055. [PMID: 35586216 PMCID: PMC9108671 DOI: 10.3389/fpls.2022.881055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/04/2022] [Indexed: 06/15/2023]
Abstract
Zinc is an essential micronutrient for plant growth and development, and functions as a cofactor for hundreds of transcription factors and enzymes in numerous biological processes. Zinc deficiency is common abiotic stress resulting in yield loss and quality deterioration of crops, but zinc excess causes toxicity for biological systems. In plants, zinc homeostasis is tightly modulated by zinc transporters and binding compounds that uptake/release, transport, localize, and store zinc, as well as their upstream regulators. Lazarus 1 (LAZ1), a member of DUF300 protein family, functions as transmembrane organic solute transporter in vertebrates. However, the function of LAZ1 in plants is still obscure. In the present study, the ZmLAZ1-4 protein was confirmed to bind to zinc ions by bioinformatic prediction and thermal shift assay. Heterologous expression of ZmLAZ1-4 in the zinc-sensitive yeast mutant, Arabidopsis, and maize significantly facilitated the accumulation of Zn2+ in transgenic lines, respectively. The result of subcellular localization exhibited that ZmLAZ1-4 was localized on the plasma and vacuolar membrane, as well as chloroplast. Moreover, the ZmLAZ1-4 gene was negatively co-expressed with ZmBES1/BZR1-11 gene through co-expression and real-time quantitative PCR analysis. The results of yeast one-hybrid and dual-luciferase assay suggested that ZmBES1/BZR1-11 could bind to ZmLAZ1-4 promoter to inhibit its transcription. All results indicated that ZmLAZ1-4 was a novel zinc transporter on plasma and vacuolar membrane, and transported zinc under negative regulation of the ZmBES1/BZR1-11 transcription factor. The study provides insights into further underlying the mechanism of ZmLAZ1-4 regulating zinc homeostasis.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Wanchen Li
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, Maize Research Institute, Sichuan Agricultural University, Chengdu, China
| | - Fengling Fu
- Key Laboratory of Biology and Genetic Improvement of Maize in Southwest Region, Ministry of Agriculture, Maize Research Institute, Sichuan Agricultural University, Chengdu, China
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Amini S, Arsova B, Hanikenne M. The molecular basis of zinc homeostasis in cereals. PLANT, CELL & ENVIRONMENT 2022; 45:1339-1361. [PMID: 35037265 DOI: 10.1111/pce.14257] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 11/12/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Plants require zinc (Zn) as an essential cofactor for diverse molecular, cellular and physiological functions. Zn is crucial for crop yield, but is one of the most limiting micronutrients in soils. Grasses like rice, wheat, maize and barley are crucial sources of food and nutrients for humans. Zn deficiency in these species therefore not only reduces annual yield but also directly results in Zn malnutrition of more than two billion people in the world. There has been good progress in understanding Zn homeostasis and Zn deficiency mechanisms in plants. However, our current knowledge of monocots, including grasses, remains insufficient. In this review, we provide a summary of our knowledge of molecular Zn homeostasis mechanisms in monocots, with a focus on important cereal crops. We additionally highlight divergences in Zn homeostasis of monocots and the dicot model Arabidopsis thaliana, as well as important gaps in our knowledge that need to be addressed in future research on Zn homeostasis in cereal monocots.
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Affiliation(s)
- Sahand Amini
- InBioS-PhytoSystems, Translational Plant Biology, University of Liège, Liège, Belgium
| | - Borjana Arsova
- Root Dynamics Group, IBG-2 - Plant Sciences, Institut für Bio- und Geowissenschaften (IBG), Forschungszentrum, Jülich, Germany
| | - Marc Hanikenne
- InBioS-PhytoSystems, Translational Plant Biology, University of Liège, Liège, Belgium
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Ereful NC, Jones H, Fradgley N, Boyd L, Cherie HA, Milner MJ. Nutritional and genetic variation in a core set of Ethiopian Tef (Eragrostis tef) varieties. BMC PLANT BIOLOGY 2022; 22:220. [PMID: 35484480 PMCID: PMC9047342 DOI: 10.1186/s12870-022-03595-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Tef (Eragrostis tef) is a tropical cereal domesticated and grown in the Ethiopian highlands, where it has been a staple food of Ethiopians for many centuries. Food insecurity and nutrient deficiencies are major problems in the country, so breeding for enhanced nutritional traits, such as Zn content, could help to alleviate problems with malnutrition. RESULTS To understand the breeding potential of nutritional traits in tef a core set of 24 varieties were sequenced and their mineral content, levels of phytate and protein, as well as a number of nutritionally valuable phenolic compounds measured in grain. Significant variation in all these traits was found between varieties. Genome wide sequencing of the 24 tef varieties revealed 3,193,582 unique SNPs and 897,272 unique INDELs relative to the tef reference var. Dabbi. Sequence analysis of two key transporter families involved in the uptake and transport of Zn by the plant led to the identification of 32 Zinc Iron Permease (ZIP) transporters and 14 Heavy Metal Associated (HMA) transporters in tef. Further analysis identified numerous variants, of which 14.6% of EtZIP and 12.4% of EtHMA variants were non-synonymous changes. Analysis of a key enzyme in flavanol synthesis, flavonoid 3'-hydroxylase (F3'H), identified a T-G variant in the tef homologue Et_s3159-0.29-1.mrna1 that was associated with the differences observed in kaempferol glycoside and quercetin glycoside levels. CONCLUSION Wide genetic and phenotypic variation was found in 24 Ethiopian tef varieties which would allow for breeding gains in many nutritional traits of importance to human health.
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Affiliation(s)
- Nelzo C Ereful
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Philippine Genome Centre, University of the Philippines Los Baňos, Laguna, Philippines
| | - Huw Jones
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
| | - Nick Fradgley
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
- Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EA, UK
| | - Lesley Boyd
- NIAB, 93 Lawrence Weaver Road, Cambridge, CB3 0LE, UK
| | - Hirut Assaye Cherie
- Faculty of Chemical and Food Engineering, Bahir Dar Institute of Technology, P.O.Box 26, Bahir Dar, Ethiopia
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Li S, Song Z, Liu X, Zhou X, Yang W, Chen J, Chen R. Mediation of Zinc and Iron Accumulation in Maize by ZmIRT2, a Novel Iron-Regulated Transporter. PLANT & CELL PHYSIOLOGY 2022; 63:521-534. [PMID: 35137187 DOI: 10.1093/pcp/pcab177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 12/21/2021] [Accepted: 02/05/2022] [Indexed: 06/14/2023]
Abstract
Iron (Fe) is an essential micronutrient for plant growth. Iron-regulated transporters (IRTs) play important roles in Fe2+ uptake and transport in strategy I plants. Maize (Zea mays) belongs to a strategy II plant, in which mugineic acid (MA)-Fe3+ uptake is mainly carried out by Yellow Stripe 1 (YS1). However, ZmIRT1 was previously identified by our laboratory. In this study, we isolated a novel gene from maize (ZmIRT2), which is highly homologous to OsIRT2 and ZmIRT1. ZmIRT2 was expressed in roots and anther and was induced by Fe and zinc (Zn) deficiencies. ZmIRT2-GFP fusion protein localized to the plasma membrane and endoplasmic reticulum. ZmIRT2 reversed growth defects involving Zn and Fe uptake in mutant yeast. ZmIRT2 overexpression in maize led to elevated Zn and Fe levels in roots, shoots and seeds of transgenic plants. Transcript levels of ZmIRT1 were elevated in roots, while levels of YS1 were reduced in shoots of ZmIRT2 transgenic plants. Our results imply that ZmIRT2 may function solely with ZmIRT1 to mediate Fe uptake in roots. ZmIRT1, ZmIRT2 and ZmYS1 may function in a cooperative manner to maintain Zn and Fe homeostasis in ZmIRT2 overexpressing plants. Furthermore, ZmIRT2 could be used in fortification efforts to elevate Zn and Fe levels in crop plants.
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Affiliation(s)
- Suzhen Li
- Crop Functional Genome Research Center, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, 12# Zhongguancun South Street, Beijing 100081, China
| | - Zizhao Song
- Crop Functional Genome Research Center, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, 12# Zhongguancun South Street, Beijing 100081, China
| | - Xiaoqing Liu
- Crop Functional Genome Research Center, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, 12# Zhongguancun South Street, Beijing 100081, China
| | - Xiaojin Zhou
- Crop Functional Genome Research Center, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, 12# Zhongguancun South Street, Beijing 100081, China
| | - Wenzhu Yang
- Crop Functional Genome Research Center, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, 12# Zhongguancun South Street, Beijing 100081, China
| | - Jingtang Chen
- Department of Agronomy, Agricultural University of Hebei/Hebei Sub-center of Chinese National Maize Improvement Center, 289# Lingyusi Street, Baoding 071001, China
- College of Agronomy, Qingdao Agricultural University, 700# Changcheng Road, Qingdao 266109, China
| | - Rumei Chen
- Crop Functional Genome Research Center, Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, 12# Zhongguancun South Street, Beijing 100081, China
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Huang S, Yamaji N, Feng Ma J. Zinc transport in rice: how to balance optimal plant requirements and human nutrition. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1800-1808. [PMID: 34727182 DOI: 10.1093/jxb/erab478] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/27/2021] [Indexed: 05/15/2023]
Abstract
Zinc (Zn) is an essential micronutrient for both plants and animals, while its deficiency in crops and humans is a global problem that affects both crop productivity and human health. Since plants and humans differ in their Zn requirements, it is crucial to balance plant nutrition and human nutrition for Zn. In this review, we focus on the transport system of Zn from soil to grain in rice (Oryza sativa), which is a major dietary source of Zn for people subsiding on rice-based diets. We describe transporters belonging to the different families that are involved in the uptake, vacuolar sequestration, root-to-shoot translocation, and distribution of Zn, and discuss their mechanisms of regulation. We give examples for enhancing Zn accumulation and bioavailability in rice grains through the manipulation of genes that are highly expressed in the nodes, where Zn is deposited at high concentrations. Finally, we provide our perspectives on breeding rice cultivars with both increased tolerance to Zn-deficiency stress and high Zn density in the grains.
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Affiliation(s)
- Sheng Huang
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, Japan
| | - Naoki Yamaji
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, Japan
| | - Jian Feng Ma
- Institute of Plant Science and Resources, Okayama University, Chuo 2-20-1, Kurashiki, Japan
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Clemens S. The cell biology of zinc. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:1688-1698. [PMID: 34727160 DOI: 10.1093/jxb/erab481] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Accepted: 10/28/2021] [Indexed: 06/13/2023]
Abstract
Nearly 10% of all plant proteins belong to the zinc (Zn) proteome. They require Zn either for catalysis or as a structural element. Most of the protein-bound Zn in eukaryotic cells is found in the cytosol. The fundamental differences between transition metal cations in the stability of their complexes with organic ligands, as described by the Irving-Williams series, necessitate buffering of cytosolic Zn (the 'free Zn' pool) in the picomolar range (i.e. ~6 orders of magnitude lower than the total cellular concentration). Various metabolites and peptides, including nicotianamine, glutathione, and phytochelatins, serve as Zn buffers. They are hypothesized to supply Zn to enzymes, transporters, or the recently identified sensor proteins. Zn2+ acquisition is mediated by ZRT/IRT-like proteins. Metal tolerance proteins transport Zn2+ into vacuoles and the endoplasmic reticulum, the major Zn storage sites. Heavy metal ATPase-dependent efflux of Zn2+ is another mechanism to control cytosolic Zn. Spatially controlled Zn2+ influx or release from intracellular stores would result in dynamic modulation of cellular Zn pools, which may directly influence protein-protein interactions or the activities of enzymes involved in signaling cascades. Possible regulatory roles of such changes, as recently elucidated in mammalian cells, are discussed.
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Affiliation(s)
- Stephan Clemens
- Department of Plant Physiology and Faculty of Life Science: Food, Nutrition and Health, University of Bayreuth, Universitätsstrasse 30, D-95447 Bayreuth, Germany
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Wang H, Jia J, Cai Z, Duan M, Jiang Z, Xia Q, Ma Q, Lian T, Nian H. Identification of quantitative trait loci (QTLs) and candidate genes of seed Iron and zinc content in soybean [Glycine max (L.) Merr.]. BMC Genomics 2022; 23:146. [PMID: 35183125 PMCID: PMC8857819 DOI: 10.1186/s12864-022-08313-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 01/13/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Deciphering the hereditary mechanism of seed iron (Fe) and zinc (Zn) content in soybean is important and sustainable to address the "hidden hunger" that presently affects approximately 2 billion people worldwide. Therefore, in order to detect genomic regions related to soybean seed Fe and Zn content, a recombinant inbred line (RIL) population with 248 lines was assessed in four environments to detect Quantitative Trait Loci (QTLs) related to soybean seed Fe and Zn content. RESULT Wide variation was found in seed Fe and Zn content in four environments, and genotype, environment, and genotype × environment interactions had significant influences on both the seed Fe and Zn content. A positive correlation was observed between seed Fe content and seed Zn content, and broad-sense heritability (H2) of seed Fe and Zn content were 0.73 and 0.75, respectively. In this study, five QTLs for seed Fe content were detected with 4.57 - 32.71% of phenotypic variation explained (PVE) and logarithm of odds (LOD) scores ranging from 3.60 to 33.79. Five QTLs controlling the seed Zn content were detected, and they individually explained 3.35 to 26.48% of the phenotypic variation, with LOD scores ranging from 3.64 to 20.4. Meanwhile, 409,541 high-quality single-nucleotide variants (SNVs) and 85,102 InDels (except intergenic regions) between two bi-parental lines were identified by whole genome resequencing. A total of 12 candidate genes were reported in one major QTL for seed Fe content and two major QTLs for seed Zn content, with the help of RNA-Seq analysis, gene ontology (GO) enrichment, gene annotation, and bi-parental whole genome sequencing (WGS) data. CONCLUSIONS Limited studies were performed about microelement of soybean, so these results may play an important role in the biofortification of Fe and Zn and accelerate the development of marker-assisted selection (MAS) for breeding soybeans fortified with iron and zinc.
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Affiliation(s)
- Huan Wang
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
| | - Jia Jia
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
| | - Zhandong Cai
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
| | - Mingming Duan
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
| | - Ze Jiang
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
| | - Qiuju Xia
- Rice Molecular Breeding Institute, GRANLUX ASSOCIATED GRAINS, 518024 Shenzhen, Guangdong, People’s Republic of China
| | - Qibin Ma
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
| | - Tengxiang Lian
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
| | - Hai Nian
- The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
- Guangdong Laboratory for Lingnan Modern Agriculture, 510642 Guangzhou, Guangdong People’s Republic of China
- The Key Laboratory of Plant Molecular Breeding of Guangdong Province, College of Agriculture, South China Agricultural University, 510642 Guangzhou, Guangdong People’s Republic of China
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Ji C, Li J, Jiang C, Zhang L, Shi L, Xu F, Cai H. Zinc and nitrogen synergistic act on root-to-shoot translocation and preferential distribution in rice. J Adv Res 2022; 35:187-198. [PMID: 35003800 PMCID: PMC8721242 DOI: 10.1016/j.jare.2021.04.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/06/2021] [Accepted: 04/15/2021] [Indexed: 11/30/2022] Open
Abstract
Zn promoted translocation and distribution of N into leaves and brown rice. Zn induced the expression levels of N transporter genes in both root and shoot. Zn increased the N assimilation level in leaves. N promoted translocation and distribution of Zn into leaves and brown rice. N up-regulated the expression levels of Zn transporter genes in both root and shoot.
Introduction Multiple studies have shown strong relationships between different nutrients in plants, and the important role of N in Zn acquisition and translocation has been recognized. Objectives The aim of this study was to estimate the effect of Zn on N uptake, translocation, and distribution in rice as well as the corresponding molecular mechanisms. We also aimed to evaluate the impact of N on the Zn content in rice grains which is closely related to the Zn nutrition in humans with rice-based diets. Methods We conducted both field trials and hydroponic cultures of two rice cultivars to analyze the growth and yield, the uptake, translocation, and distribution of N and Zn, as well as the expression of N transport and assimilation genes, and the Zn transporter genes under different combined applications of N and Zn. Results Zn supply promoted the root-to-shoot translocation (12–70% increasing) and distribution of N into the leaves (19–49% increasing) and brown rice (6–9% increasing) and increased the rice biomass (by 14–35%) and yield (by 13–63%). Zn supply induced the expression of OsNRTs and OsAMTs in both roots and shoots, but repressed the expression of OsNiR2, OsGS1;2, and OsFd-GOGAT in roots, whereas it activated the expression of OsNiR2, OsGS1;1, OsGS2, and OsFd-GOGAT in the shoots. Moreover, the enzyme activities of nitrite reductase, nitrate reductase, and glutamine synthetase increased and the free NO3– concentration decreased, but the soluble protein concentration increased significantly in the shoots after Zn supply. Synergistically, N significantly facilitated the root-to-shoot translocation (1.68–11.66 fold) and distribution of Zn into the leaves (1.68–6.37 fold) and brown rice (7–12% increasing) and upregulated the expression levels of Zn transporter genes in both the roots and shoots. Conclusions We propose a working model of the cross-talk between Zn and N in rice plants, which will aid in the appropriate combined application of Zn and N fertilizers in the field to improve both N utilization in plants and Zn nutrition in humans with rice-based diets.
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Key Words
- AMT, ammonium transporter
- Distribution
- GLY, Guangliangyou 35
- GOGAT, glutamate synthase
- GS, glutamine synthetase
- Interaction
- N, nitrogen
- NR, nitrate reductase
- NRT, nitrate transporter
- NiR, nitrite reductase
- Nip, Nipponbare
- Nitrogen
- Rice
- Translocation
- ZIP, ZRT, IRT-like protein
- Zinc
- Zn, Zinc
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Affiliation(s)
- Chenchen Ji
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Junli Li
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Cuncang Jiang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Lin Zhang
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
| | - Lei Shi
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- National Key Laboratory of Crop Genetics and Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Fangsen Xu
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- National Key Laboratory of Crop Genetics and Improvement, Huazhong Agricultural University, Wuhan 430070, China
| | - Hongmei Cai
- Microelement Research Center, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
- Corresponding author.
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Raza A, Tabassum J, Zahid Z, Charagh S, Bashir S, Barmukh R, Khan RSA, Barbosa F, Zhang C, Chen H, Zhuang W, Varshney RK. Advances in "Omics" Approaches for Improving Toxic Metals/Metalloids Tolerance in Plants. FRONTIERS IN PLANT SCIENCE 2022; 12:794373. [PMID: 35058954 PMCID: PMC8764127 DOI: 10.3389/fpls.2021.794373] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/22/2021] [Indexed: 05/17/2023]
Abstract
Food safety has emerged as a high-urgency matter for sustainable agricultural production. Toxic metal contamination of soil and water significantly affects agricultural productivity, which is further aggravated by extreme anthropogenic activities and modern agricultural practices, leaving food safety and human health at risk. In addition to reducing crop production, increased metals/metalloids toxicity also disturbs plants' demand and supply equilibrium. Counterbalancing toxic metals/metalloids toxicity demands a better understanding of the complex mechanisms at physiological, biochemical, molecular, cellular, and plant level that may result in increased crop productivity. Consequently, plants have established different internal defense mechanisms to cope with the adverse effects of toxic metals/metalloids. Nevertheless, these internal defense mechanisms are not adequate to overwhelm the metals/metalloids toxicity. Plants produce several secondary messengers to trigger cell signaling, activating the numerous transcriptional responses correlated with plant defense. Therefore, the recent advances in omics approaches such as genomics, transcriptomics, proteomics, metabolomics, ionomics, miRNAomics, and phenomics have enabled the characterization of molecular regulators associated with toxic metal tolerance, which can be deployed for developing toxic metal tolerant plants. This review highlights various response strategies adopted by plants to tolerate toxic metals/metalloids toxicity, including physiological, biochemical, and molecular responses. A seven-(omics)-based design is summarized with scientific clues to reveal the stress-responsive genes, proteins, metabolites, miRNAs, trace elements, stress-inducible phenotypes, and metabolic pathways that could potentially help plants to cope up with metals/metalloids toxicity in the face of fluctuating environmental conditions. Finally, some bottlenecks and future directions have also been highlighted, which could enable sustainable agricultural production.
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Affiliation(s)
- Ali Raza
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Oil Crops Research Institute, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
| | - Javaria Tabassum
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Hangzhou, China
| | - Zainab Zahid
- School of Civil and Environmental Engineering (SCEE), Institute of Environmental Sciences and Engineering (IESE), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Sidra Charagh
- State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Hangzhou, China
| | - Shanza Bashir
- School of Civil and Environmental Engineering (SCEE), Institute of Environmental Sciences and Engineering (IESE), National University of Sciences and Technology (NUST), Islamabad, Pakistan
| | - Rutwik Barmukh
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
| | - Rao Sohail Ahmad Khan
- Centre of Agricultural Biochemistry and Biotechnology (CABB), University of Agriculture, Faisalabad, Pakistan
| | - Fernando Barbosa
- Department of Clinical Analysis, Toxicology and Food Sciences, University of Sao Paulo, Ribeirão Preto, Brazil
| | - Chong Zhang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Oil Crops Research Institute, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
| | - Hua Chen
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Oil Crops Research Institute, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
| | - Weijian Zhuang
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Oil Crops Research Institute, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
| | - Rajeev K. Varshney
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Center of Legume Crop Genetics and Systems Biology/College of Agriculture, Oil Crops Research Institute, Fujian Agriculture and Forestry University (FAFU), Fuzhou, China
- Center of Excellence in Genomics & Systems Biology, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Hyderabad, India
- State Agricultural Biotechnology Centre, Centre for Crop and Food Innovation, Food Futures Institute, Murdoch University, Murdoch, WA, Australia
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Stanton C, Sanders D, Krämer U, Podar D. Zinc in plants: Integrating homeostasis and biofortification. MOLECULAR PLANT 2022; 15:65-85. [PMID: 34952215 DOI: 10.1016/j.molp.2021.12.008] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 12/07/2021] [Accepted: 12/21/2021] [Indexed: 05/24/2023]
Abstract
Zinc plays many essential roles in life. As a strong Lewis acid that lacks redox activity under environmental and cellular conditions, the Zn2+ cation is central in determining protein structure and catalytic function of nearly 10% of most eukaryotic proteomes. While specific functions of zinc have been elucidated at a molecular level in a number of plant proteins, wider issues abound with respect to the acquisition and distribution of zinc by plants. An important challenge is to understand how plants balance between Zn supply in soil and their own nutritional requirement for zinc, particularly where edaphic factors lead to a lack of bioavailable zinc or, conversely, an excess of zinc that bears a major risk of phytotoxicity. Plants are the ultimate source of zinc in the human diet, and human Zn deficiency accounts for over 400 000 deaths annually. Here, we review the current understanding of zinc homeostasis in plants from the molecular and physiological perspectives. We provide an overview of approaches pursued so far in Zn biofortification of crops. Finally, we outline a "push-pull" model of zinc nutrition in plants as a simplifying concept. In summary, this review discusses avenues that can potentially deliver wider benefits for both plant and human Zn nutrition.
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Affiliation(s)
| | - Dale Sanders
- John Innes Centre, Colney Lane, Norwich, NR4 7UH, UK
| | - Ute Krämer
- Molecular Genetics and Physiology of Plants, Ruhr University Bochum, 44801 Bochum, Germany.
| | - Dorina Podar
- Department of Molecular Biology and Biotechnology and Centre for Systems Biology, Biodiversity and Bioresources, Babes-Bolyai University, 400084 Cluj-Napoca, Romania.
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Liu C, Li N, Lu Z, Sun Q, Pang X, Xiang X, Deng C, Xiong Z, Shu K, Yang F, Hu Z. CG and CHG Methylation Contribute to the Transcriptional Control of OsPRR37-Output Genes in Rice. FRONTIERS IN PLANT SCIENCE 2022; 13:839457. [PMID: 35242159 PMCID: PMC8885545 DOI: 10.3389/fpls.2022.839457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/25/2022] [Indexed: 05/08/2023]
Abstract
Plant circadian clock coordinates endogenous transcriptional rhythms with diurnal changes of environmental cues. OsPRR37, a negative component in the rice circadian clock, reportedly regulates transcriptome rhythms, and agronomically important traits. However, the underlying regulatory mechanisms of OsPRR37-output genes remain largely unknown. In this study, whole genome bisulfite sequencing and high-throughput RNA sequencing were applied to verify the role of DNA methylation in the transcriptional control of OsPRR37-output genes. We found that the overexpression of OsPRR37 suppressed rice growth and altered cytosine methylations in CG and CHG sequence contexts in but not the CHH context (H represents A, T, or C). In total, 35 overlapping genes were identified, and 25 of them showed negative correlation between the methylation level and gene expression. The promoter of the hexokinase gene OsHXK1 was hypomethylated at both CG and CHG sites, and the expression of OsHXK1 was significantly increased. Meanwhile, the leaf starch content was consistently lower in OsPRR37 overexpression lines than in the recipient parent Guangluai 4. Further analysis with published data of time-course transcriptomes revealed that most overlapping genes showed peak expression phases from dusk to dawn. The genes involved in DNA methylation, methylation maintenance, and DNA demethylation were found to be actively expressed around dusk. A DNA glycosylase, namely ROS1A/DNG702, was probably the upstream candidate that demethylated the promoter of OsHXK1. Taken together, our results revealed that CG and CHG methylation contribute to the transcriptional regulation of OsPRR37-output genes, and hypomethylation of OsHXK1 leads to decreased starch content and reduced plant growth in rice.
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Affiliation(s)
- Chuan Liu
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
- *Correspondence: Chuan Liu,
| | - Na Li
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Zeping Lu
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Qianxi Sun
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Xinhan Pang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Xudong Xiang
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Changhao Deng
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Zhengshuojian Xiong
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Kunxian Shu
- Chongqing Key Laboratory of Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, China
| | - Fang Yang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
| | - Zhongli Hu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, China
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Hamzah Saleem M, Usman K, Rizwan M, Al Jabri H, Alsafran M. Functions and strategies for enhancing zinc availability in plants for sustainable agriculture. FRONTIERS IN PLANT SCIENCE 2022; 13:1033092. [PMID: 36275511 PMCID: PMC9586378 DOI: 10.3389/fpls.2022.1033092] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/21/2022] [Indexed: 05/13/2023]
Abstract
Zinc (Zn), which is regarded as a crucial micronutrient for plants, and is considered to be a vital micronutrient for plants. Zn has a significant role in the biochemistry and metabolism of plants owing to its significance and toxicity for biological systems at specific Zn concentrations, i.e., insufficient or harmful above the optimal range. It contributes to several cellular and physiological activities of plants and promotes plant growth, development, and yield. Zn is an important structural, enzymatic, and regulatory component of many proteins and enzymes. Consequently, it is essential to understand the interplay and chemistry of Zn in soil, its absorption, transport, and the response of plants to Zn deficiency, as well as to develop sustainable strategies for Zn deficiency in plants. Zn deficiency appears to be a widespread and prevalent issue in crops across the world, resulting in severe production losses that compromise nutritional quality. Considering this, enhancing Zn usage efficiency is the most effective strategy, which entails improving the architecture of the root system, absorption of Zn complexes by organic acids, and Zn uptake and translocation mechanisms in plants. Here, we provide an overview of various biotechnological techniques to improve Zn utilization efficiency and ensure the quality of crop. In light of the current status, an effort has been made to further dissect the absorption, transport, assimilation, function, deficiency, and toxicity symptoms caused by Zn in plants. As a result, we have described the potential information on diverse solutions, such as root structure alteration, the use of biostimulators, and nanomaterials, that may be used efficiently for Zn uptake, thereby assuring sustainable agriculture.
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Affiliation(s)
| | - Kamal Usman
- Agricultural Research Station, Office of VP for Research and Graduate Studies, Qatar University, Doha, Qatar
| | | | - Hareb Al Jabri
- Center for Sustainable Development (CSD), College of Arts and Sciences, Qatar University, Doha, Qatar
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, Doha, Qatar
| | - Mohammed Alsafran
- Agricultural Research Station, Office of VP for Research and Graduate Studies, Qatar University, Doha, Qatar
- Central Laboratories Unit (CLU), Office of VP for Research and Graduate Studies, Qatar University, Doha, Qatar
- *Correspondence: Mohammed Alsafran,
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Thakur M, Praveen S, Divte PR, Mitra R, Kumar M, Gupta CK, Kalidindi U, Bansal R, Roy S, Anand A, Singh B. Metal tolerance in plants: Molecular and physicochemical interface determines the "not so heavy effect" of heavy metals. CHEMOSPHERE 2022; 287:131957. [PMID: 34450367 DOI: 10.1016/j.chemosphere.2021.131957] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 05/27/2023]
Abstract
An increase in technological interventions and ruthless urbanization in the name of development has deteriorated our environment over time and caused the buildup of heavy metals (HMs) in the soil and water resources. These heavy metals are gaining increased access into our food chain through the plant and/or animal-based products, to adversely impact human health. The issue of how to restrict the entry of HMs or modulate their response in event of their ingress into the plant system is worrisome. The current knowledge on the interactive-regulatory role and contribution of different physical, biophysical, biochemical, physiological, and molecular factors that determine the heavy metal availability-uptake-partitioning dynamics in the soil-plant-environment needs to be updated. The present review critically analyses the interactive overlaps between different adaptation and tolerance strategies that may be causally related to their cellular localization, conjugation and homeostasis, a relative affinity for the transporters, rhizosphere modifications, activation of efflux pumps and vacuolar sequestration that singly or collectively determine a plant's response to HM stress. Recently postulated role of gaseous pollutants such as SO2 and other secondary metabolites in heavy metal tolerance, which may be regulated at the whole plant and/or tissue/cell is discussed to delineate and work towards a "not so heavy" response of plants to heavy metals present in the contaminated soils.
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Affiliation(s)
- Meenakshi Thakur
- College of Horticulture and Forestry (Dr. Y.S. Parmar University of Horticulture and Forestry), Neri, Hamirpur, 177 001, Himachal Pradesh, India
| | - Shamima Praveen
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Pandurang R Divte
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Raktim Mitra
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Mahesh Kumar
- ICAR-National Institute of Abiotic Stress Management, Baramati, Maharashtra, 413 115, India
| | - Chandan Kumar Gupta
- Division of Plant Physiology and Biochemistry, ICAR-Indian Institute of Sugarcane Research, Lucknow, 226 002, India
| | - Usha Kalidindi
- Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India
| | - Ruchi Bansal
- Division of Germplasm Evaluation, ICAR-National Bureau of Plant Genetic Resources, New Delhi, 110 012, India
| | - Suman Roy
- ICAR-Central Research Institute for Jute and Allied Fibres, Barrackpore, Kolkata, 700 120, India
| | - Anjali Anand
- Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
| | - Bhupinder Singh
- Centre for Environment Science and Climate Resilient Agriculture, ICAR-Indian Agricultural Research Institute, New Delhi, 110 012, India.
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Niu M, Bao C, Zhan J, Yue X, Zou J, Su N, Cui J. Plasma membrane-localized protein BcHIPP16 promotes the uptake of copper and cadmium in planta. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 227:112920. [PMID: 34678630 DOI: 10.1016/j.ecoenv.2021.112920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/14/2021] [Accepted: 10/17/2021] [Indexed: 06/13/2023]
Abstract
Cadmium (Cd) is one of the toxic heavy metals in soil, which not only suppresses crop production but also threatens human health. In this study, we aim to clarify the biological function of Cd-related gene BcHIPP16, so as to provide potential genetic solutions to decrease the Cd levels of pak choi. Tissue expression analysis showed that BcHIPP16 expressed in almost all the plant bodies. The transcriptional level of BcHIPP16 in roots was higher than that in shoots, which was significantly induced by copper (Cu) deficiency and Cd exposure conditions. Subcellular localization revealed that BcHIPP16 localized in plasma membrane. Expressing BcHIPP16 in yeast cells improved the sensitivity to Cu and Cd and improved their accumulation in yeast. Furthermore, the Cu and Cd content of Arabidopsis seedlings were increased and complemented, respectively when expressing BcHIPP16 in wild type (WT) and hip16 mutants. Non-invasive Micro-test Technology (NMT) was used to measure the real-time Cd2+ influx from the root surface of BcHIPP16 transgenic Arabidopsis lines, and the result demonstrated that BcHIPP16 promoted Cd2+ influx into Arabidopsis root cells. Taken together, our study showed that BcHIPP16 contributed to absorbing nutrient metal Cu and heavy metal Cd in planta.
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Affiliation(s)
- Mengyang Niu
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Changjian Bao
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Junyi Zhan
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Xiaomeng Yue
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Jianwen Zou
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Nana Su
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Jin Cui
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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Wu D, Saleem M, He T, He G. The Mechanism of Metal Homeostasis in Plants: A New View on the Synergistic Regulation Pathway of Membrane Proteins, Lipids and Metal Ions. MEMBRANES 2021; 11:membranes11120984. [PMID: 34940485 PMCID: PMC8706360 DOI: 10.3390/membranes11120984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 12/04/2021] [Accepted: 12/11/2021] [Indexed: 12/15/2022]
Abstract
Heavy metal stress (HMS) is one of the most destructive abiotic stresses which seriously affects the growth and development of plants. Recent studies have shown significant progress in understanding the molecular mechanisms underlying plant tolerance to HMS. In general, three core signals are involved in plants' responses to HMS; these are mitogen-activated protein kinase (MAPK), calcium, and hormonal (abscisic acid) signals. In addition to these signal components, other regulatory factors, such as microRNAs and membrane proteins, also play an important role in regulating HMS responses in plants. Membrane proteins interact with the highly complex and heterogeneous lipids in the plant cell environment. The function of membrane proteins is affected by the interactions between lipids and lipid-membrane proteins. Our review findings also indicate the possibility of membrane protein-lipid-metal ion interactions in regulating metal homeostasis in plant cells. In this review, we investigated the role of membrane proteins with specific substrate recognition in regulating cell metal homeostasis. The understanding of the possible interaction networks and upstream and downstream pathways is developed. In addition, possible interactions between membrane proteins, metal ions, and lipids are discussed to provide new ideas for studying metal homeostasis in plant cells.
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Affiliation(s)
- Danxia Wu
- College of Agricultural, Guizhou University, Guiyang 550025, China;
| | - Muhammad Saleem
- Department of Biological Sciences, Alabama State University, Montgomery, AL 36104, USA;
| | - Tengbing He
- College of Agricultural, Guizhou University, Guiyang 550025, China;
- Institute of New Rural Development, West Campus, Guizhou University, Guiyang 550025, China
- Correspondence: (T.H.); (G.H.)
| | - Guandi He
- College of Agricultural, Guizhou University, Guiyang 550025, China;
- Correspondence: (T.H.); (G.H.)
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Lee S, Lee J, Ricachenevsky FK, Punshon T, Tappero R, Salt DE, Guerinot ML. Redundant roles of four ZIP family members in zinc homeostasis and seed development in Arabidopsis thaliana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 108:1162-1173. [PMID: 34559918 PMCID: PMC8613002 DOI: 10.1111/tpj.15506] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/29/2021] [Accepted: 09/08/2021] [Indexed: 05/28/2023]
Abstract
Zinc (Zn) is essential for normal plant growth and development. The Zn-regulated transporter, iron-regulated transporter (IRT)-like protein (ZIP) family members are involved in Zn transport and cellular Zn homeostasis throughout the domains of life. In this study, we have characterized four ZIP transporters from Arabidopsis thaliana (IRT3, ZIP4, ZIP6, and ZIP9) to better understand their functional roles. The four ZIP proteins can restore the growth defect of a yeast Zn uptake mutant and are upregulated under Zn deficiency. Single and double mutants show no phenotypes under Zn-sufficient or Zn-limited growth conditions. In contrast, triple and quadruple mutants show impaired growth irrespective of external Zn supply due to reduced Zn translocation from root to shoot. All four ZIP genes are highly expressed during seed development, and siliques from all single and higher-order mutants exhibited an increased number of abnormal seeds and decreased Zn levels in mature seeds relative to wild type. The seed phenotypes could be reversed by supplementing the soil with Zn. Our data demonstrate that IRT3, ZIP4, ZIP6, and ZIP9 function redundantly in maintaining Zn homeostasis and seed development in A. thaliana.
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Affiliation(s)
- Sichul Lee
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, 42988, Korea
| | - Joohyun Lee
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755
- Division of Natural and Applied Sciences, Duke Kunshan University, Kunshan, Jiangsu, 215306, China
| | - Felipe K. Ricachenevsky
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755
- Botany Department, Biosciences Institute; and Graduate Program in Cell and Molecular Biology, Biotechnology Center, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Tracy Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755
| | | | - David E. Salt
- Future Food Beacon of Excellence and the School of Biosciences, University of Nottingham, Loughborough, LE12 5RD, UK
| | - Mary Lou Guerinot
- Department of Biological Sciences, Dartmouth College, Hanover, NH 03755
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Tang L, Dong J, Tan L, Ji Z, Li Y, Sun Y, Chen C, Lv Q, Mao B, Hu Y, Zhao B. Overexpression of OsLCT2, a Low-Affinity Cation Transporter Gene, Reduces Cadmium Accumulation in Shoots and Grains of Rice. RICE (NEW YORK, N.Y.) 2021; 14:89. [PMID: 34693475 PMCID: PMC8542528 DOI: 10.1186/s12284-021-00530-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 10/12/2021] [Indexed: 06/13/2023]
Abstract
Cadmium (Cd)-contaminated rice is a serious issue affecting food safety. Understanding the molecular regulatory mechanisms of Cd accumulation in rice grains is crucial to minimizing Cd concentrations in grains. We identified a member of the low-affinity cation transporter family, OsLCT2 in rice. It was a membrane protein. OsLCT2 was expressed in all tissues of the elongation and maturation zones in roots, with the strongest expression in pericycle and stele cells adjacent to the xylem. When grown in Cd-contaminated paddy soils, rice plants overexpressing OsLCT2 significantly reduced Cd concentrations in the straw and grains. Hydroponic experiment demonstrated its overexpression decreased the rate of Cd translocation from roots to shoots, and reduced Cd concentrations in xylem sap and in shoots of rice. Moreover, its overexpression increased Zn concentrations in roots by up-regulating the expression of OsZIP9, a gene responsible for Zn uptake. Overexpression of OsLCT2 reduces Cd accumulation in rice shoots and grains by limiting the amounts of Cd loaded into the xylem and restricting Cd translocation from roots to shoots of rice. Thus, OsLCT2 is a promising genetic resource to be engineered to reduce Cd accumulation in rice grains.
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Affiliation(s)
- Li Tang
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China
- Longping Branch of Graduate School, Hunan University, Changsha, 410125, China
| | - Jiayu Dong
- Longping Branch of Graduate School, Hunan University, Changsha, 410125, China
| | - Longtao Tan
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Zhongying Ji
- Longping Branch of Graduate School, Hunan University, Changsha, 410125, China
| | - Yaokui Li
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Yuantao Sun
- Longping Branch of Graduate School, Hunan University, Changsha, 410125, China
| | - Caiyan Chen
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Qiming Lv
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China
- Longping Branch of Graduate School, Hunan University, Changsha, 410125, China
| | - Bigang Mao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China
- Longping Branch of Graduate School, Hunan University, Changsha, 410125, China
| | - Yuanyi Hu
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China
| | - Bingran Zhao
- State Key Laboratory of Hybrid Rice, Hunan Hybrid Rice Research Center, Changsha, 410125, China.
- Longping Branch of Graduate School, Hunan University, Changsha, 410125, China.
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Xu J, Wang X, Zhu H, Yu F. Maize Genotypes With Different Zinc Efficiency in Response to Low Zinc Stress and Heterogeneous Zinc Supply. FRONTIERS IN PLANT SCIENCE 2021; 12:736658. [PMID: 34691112 PMCID: PMC8531504 DOI: 10.3389/fpls.2021.736658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
All over the world, a common problem in the soil is the low content of available zinc (Zn), which is unevenly distributed and difficult to move. However, information on the foraging strategies of roots in response to heterogeneous Zn supply is still very limited. Few studies have analyzed the adaptability of maize inbred lines with different Zn efficiencies to different low Zn stress time lengths in maize. This study analyzed the effects of different time lengths of low Zn stress on various related traits in different inbred lines. In addition, morphological plasticity of roots and the response of Zn-related important gene iron-regulated transporter-like proteins (ZIPs) were studied via simulating the heterogeneity of Zn nutrition in the soil. In this report, when Zn deficiency stress duration was extended (from 14 to 21 days), under Zn-deficient supply (0.5 μM), Zn efficiency (ZE) based on shoot dry weight of Wu312 displayed no significant difference, and ZE for Ye478 was increased by 92.9%. Under longer-term Zn deficiency, shoot, and root dry weights of Ye478 were 6.5 and 2.1-fold higher than those of Wu312, respectively. Uneven Zn supply strongly inhibited the development of some root traits in the -Zn region. Difference in shoot dry weights between Wu312 and Ye478 was larger in T1 (1.97 times) than in T2 (1.53 times). Under heterogeneous condition of Zn supply, both the -Zn region and the +Zn region upregulated the expressions of ZmZIP3, ZmZIP4, ZmZIP5, ZmZIP7, and ZmZIP8 in the roots of two inbred lines. These results indicate that extended time length of low-Zn stress will enlarge the difference of multiple physiological traits, especially biomass, between Zn-sensitive and Zn-tolerant inbred lines. There were significant genotypic differences of root morphology in response to heterogeneous Zn supply. Compared with split-supply with +Zn/+Zn, the difference of above-ground biomass between Zn-sensitive and Zn-tolerant inbred lines under split-supply with -Zn/+Zn was higher. Under the condition of heterogeneous Zn supply, several ZmZIP genes may play important roles in tolerance to low Zn stress, which can provide a basis for further functional characterization.
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Zeng H, Wu H, Yan F, Yi K, Zhu Y. Molecular regulation of zinc deficiency responses in plants. JOURNAL OF PLANT PHYSIOLOGY 2021; 261:153419. [PMID: 33915366 DOI: 10.1016/j.jplph.2021.153419] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/06/2021] [Accepted: 04/09/2021] [Indexed: 05/27/2023]
Abstract
Zinc (Zn) is an essential micronutrient for plants and animals. Because of its low availability in arable soils worldwide, Zn deficiency is becoming a serious agricultural problem resulting in decreases of crop yield and nutritional quality. Plants have evolved multiple responses to adapt to low levels of soil Zn supply, involving biochemical and physiological changes to improve Zn acquisition and utilization, and defend against Zn deficiency stress. In this review, we summarize the physiological and biochemical adaptations of plants to Zn deficiency, the roles of transporters and metal-binding compounds in Zn homeostasis regulation, and the recent progresses in understanding the sophisticated regulatory mechanisms of Zn deficiency responses that have been made by molecular and genetic analyses, as well as diverse 'omics' studies. Zn deficiency responses are tightly controlled by multiple layers of regulation, such as transcriptional regulation that is mediated by transcription factors like F-group bZIP proteins, epigenetic regulation at the level of chromatin, and post-transcriptional regulation mediated by small RNAs and alternative splicing. The insights into the regulatory network underlying Zn deficiency responses and the perspective for further understandings of molecular regulation of Zn deficiency responses have been discussed. The understandings of the regulatory mechanisms will be important for improving Zn deficiency tolerance, Zn use efficiency, and Zn biofortification in plants.
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Affiliation(s)
- Houqing Zeng
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China.
| | - Haicheng Wu
- College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou, 311121, China
| | - Feng Yan
- Institute of Agronomy and Plant Breeding, Justus Liebig University of Giessen, Giessen, 35392, Germany
| | - Keke Yi
- Key Laboratory of Plant Nutrition and Fertilizers, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yiyong Zhu
- Agricultural Resource and Environment Experiment Teaching Center, College of Resource and Environment Science, Nanjing Agricultural University, Nanjing, 210095, China.
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Kasote D, Sreenivasulu N, Acuin C, Regina A. Enhancing health benefits of milled rice: current status and future perspectives. Crit Rev Food Sci Nutr 2021; 62:8099-8119. [PMID: 34036858 DOI: 10.1080/10408398.2021.1925629] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Milled rice is an essential part of the regular diet for approximately half of the world's population. Its remarkable commercial value and consumer acceptance are mostly due to its promising cooking qualities, appealing sensory properties, and longer shelf life. However, the significant loss of the nutrient-rich bran layer during milling makes it less nutritious than the whole grain. Thus, enhancing the nutritive value of milled rice is vital in improving the health and wellbeing of rice consumers, particularly for those residing in the low-economic zones where rice is the primary source of calories and nutrition. This article provides a critical review on multiple frontiers of recent interventions, such as (1) infusing the genetic diversity to enrich amylose and resistant starch to reduce glycaemic index, (2) enhancing the minerals and vitamins through complementary fortification and biofortification as short and long-term interventions, and (3) developing transgenic solutions to improve the nutrient levels of milled rice. Additionally, the review highlights the benefits of functional ingredients of milled rice to human health and the potential of enhancing them in rice to address the triple burden of malnutrition. The potential merit of milled rice concerning food safety is also reviewed in this article.
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Affiliation(s)
- Deepak Kasote
- Centre of Excellence in Rice Value Addition (CERVA), International Rice Research Institute (IRRI), South Asia Regional Centre, Varanasi, Uttar Pradesh (U.P.), India
| | - Nese Sreenivasulu
- Rice Breeding and Innovation Platform, International Rice Research Institute (IRRI), Los Baños, Laguna, Philippines
| | - Cecilia Acuin
- Rice Breeding and Innovation Platform, International Rice Research Institute (IRRI), Los Baños, Laguna, Philippines
| | - Ahmed Regina
- Centre of Excellence in Rice Value Addition (CERVA), International Rice Research Institute (IRRI), South Asia Regional Centre, Varanasi, Uttar Pradesh (U.P.), India
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