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Zhang J, Dong T, Zhu M, Du D, Liu R, Yu Q, Sun Y, Zhang Z. Transcriptome- and genome-wide systematic identification of expansin gene family and their expression in tuberous root development and stress responses in sweetpotato ( Ipomoea batatas). FRONTIERS IN PLANT SCIENCE 2024; 15:1412540. [PMID: 38966148 PMCID: PMC11223104 DOI: 10.3389/fpls.2024.1412540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Accepted: 05/14/2024] [Indexed: 07/06/2024]
Abstract
Introduction Expansins (EXPs) are essential components of the plant cell wall that function as relaxation factors to directly promote turgor-driven expansion of the cell wall, thereby controlling plant growth and development and diverse environmental stress responses. EXPs genes have been identified and characterized in numerous plant species, but not in sweetpotato. Results and methods In the present study, a total of 59 EXP genes unevenly distributed across 14 of 15 chromosomes were identified in the sweetpotato genome, and segmental and tandem duplications were found to make a dominant contribution to the diversity of functions of the IbEXP family. Phylogenetic analysis showed that IbEXP members could be clustered into four subfamilies based on the EXPs from Arabidopsis and rice, and the regularity of protein motif, domain, and gene structures was consistent with this subfamily classification. Collinearity analysis between IbEXP genes and related homologous sequences in nine plants provided further phylogenetic insights into the EXP gene family. Cis-element analysis further revealed the potential roles of IbEXP genes in sweetpotato development and stress responses. RNA-seq and qRT-PCR analysis of eight selected IbEXPs genes provided evidence of their specificity in different tissues and showed that their transcripts were variously induced or suppressed under different hormone treatments (abscisic acid, salicylic acid, jasmonic acid, and 1-aminocyclopropane-1-carboxylic acid) and abiotic stresses (low and high temperature). Discussion These results provide a foundation for further comprehensive investigation of the functions of IbEXP genes and indicate that several members of this family have potential applications as regulators to control plant development and enhance stress resistance in plants.
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Affiliation(s)
- Jianling Zhang
- Laboratory of Plant Germplasm Resources Innovation and Utilization, School of Life Sciences, Liaocheng University, Liaocheng, Shandong, China
| | - Tingting Dong
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, China
| | - Mingku Zhu
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou, Jiangsu, China
| | - Dan Du
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
| | - Ranran Liu
- Laboratory of Plant Germplasm Resources Innovation and Utilization, School of Life Sciences, Liaocheng University, Liaocheng, Shandong, China
| | - Qianqian Yu
- Laboratory of Plant Germplasm Resources Innovation and Utilization, School of Life Sciences, Liaocheng University, Liaocheng, Shandong, China
| | - Yueying Sun
- Laboratory of Plant Germplasm Resources Innovation and Utilization, School of Life Sciences, Liaocheng University, Liaocheng, Shandong, China
| | - Zhihuan Zhang
- Institute of Biotechnology, Qingdao Academy of Agricultural Sciences, Qingdao, Shandong, China
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Wang L, Zhang T, Li C, Zhou C, Liu B, Wu Y, He F, Xu Y, Li F, Feng X. Overexpression of Wild Soybean Expansin Gene GsEXLB14 Enhanced the Tolerance of Transgenic Soybean Hairy Roots to Salt and Drought Stresses. PLANTS (BASEL, SWITZERLAND) 2024; 13:1656. [PMID: 38931088 PMCID: PMC11207530 DOI: 10.3390/plants13121656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 05/30/2024] [Accepted: 06/12/2024] [Indexed: 06/28/2024]
Abstract
As a type of cell-wall-relaxing protein that is widely present in plants, expansins have been shown to actively participate in the regulation of plant growth and responses to environmental stress. Wild soybeans have long existed in the wild environment and possess abundant resistance gene resources, which hold significant value for the improvement of cultivated soybean germplasm. In our previous study, we found that the wild soybean expansin gene GsEXLB14 is specifically transcribed in roots, and its transcription level significantly increases under salt and drought stress. To further identify the function of GsEXLB14, in this study, we cloned the CDS sequence of this gene. The transcription pattern of GsEXLB14 in the roots of wild soybean under salt and drought stress was analyzed by qRT-PCR. Using an Agrobacterium rhizogenes-mediated genetic transformation, we obtained soybean hairy roots overexpressing GsEXLB14. Under 150 mM NaCl- and 100 mM mannitol-simulated drought stress, the relative growth values of the number, length, and weight of transgenic soybean hairy roots were significantly higher than those of the control group. We obtained the transcriptomes of transgenic and wild-type soybean hairy roots under normal growth conditions and under salt and drought stress through RNA sequencing. A transcriptomic analysis showed that the transcription of genes encoding expansins (EXPB family), peroxidase, H+-transporting ATPase, and other genes was significantly upregulated in transgenic hairy roots under salt stress. Under drought stress, the transcription of expansin (EXPB/LB family) genes increased in transgenic hairy roots. In addition, the transcription of genes encoding peroxidases, calcium/calmodulin-dependent protein kinases, and dehydration-responsive proteins increased significantly. The results of qRT-PCR also confirmed that the transcription pattern of the above genes was consistent with the transcriptome. The differences in the transcript levels of the above genes may be the potential reason for the strong tolerance of soybean hairy roots overexpressing the GsEXLB14 gene under salt and drought stress. In conclusion, the expansin GsEXLB14 can be used as a valuable candidate gene for the molecular breeding of soybeans.
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Affiliation(s)
- Linlin Wang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (L.W.); (T.Z.); (C.L.); (F.H.); (Y.X.)
| | - Tong Zhang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (L.W.); (T.Z.); (C.L.); (F.H.); (Y.X.)
| | - Cuiting Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (L.W.); (T.Z.); (C.L.); (F.H.); (Y.X.)
| | - Changjun Zhou
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163316, China; (C.Z.); (B.L.); (Y.W.)
| | - Bing Liu
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163316, China; (C.Z.); (B.L.); (Y.W.)
| | - Yaokun Wu
- Daqing Branch of Heilongjiang Academy of Agricultural Sciences, Daqing 163316, China; (C.Z.); (B.L.); (Y.W.)
| | - Fumeng He
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (L.W.); (T.Z.); (C.L.); (F.H.); (Y.X.)
| | - Yongqing Xu
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (L.W.); (T.Z.); (C.L.); (F.H.); (Y.X.)
| | - Fenglan Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (L.W.); (T.Z.); (C.L.); (F.H.); (Y.X.)
| | - Xu Feng
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (L.W.); (T.Z.); (C.L.); (F.H.); (Y.X.)
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
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3
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Wang W, Zhang G, Wang W, Wang Z, Lv Y, Guo F, Di Y, Zhang J, Wang Y, Wang W, Li Y, Hao Q. Wheat cis-zeatin-O-glucosyltransferase cZOGT1 interacts with the Ca2+-dependent lipid binding protein TaZIP to regulate senescence. JOURNAL OF EXPERIMENTAL BOTANY 2023; 74:6619-6630. [PMID: 37668322 DOI: 10.1093/jxb/erad346] [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: 05/23/2023] [Accepted: 08/30/2023] [Indexed: 09/06/2023]
Abstract
Premature senescence is an important factor affecting wheat yield and quality. Wheat yield can be increased by delaying senescence and prolonging the effective photosynthetic time. Previously, we found that the cis-zeatin-O-glucosyltransferase (cZOGT1) gene plays an important role in the stay-green wheat phenotype. In this study, cZOGT1-overexpressing lines exhibited a delayed senescence phenotype, despite a significant reduction in the total cytokinin content. Further, we found that cZOGT1 interacted with the Ca2+-dependent lipid binding protein TaZIP (cZOGT1-interacting protein), and that a high level of cZOGT1 expression led to the suppression of TaZIP expression, which in turn, reduced abscisic acid (ABA) content. The synergistic reduction in cytokinins and ABA levels eventually caused the stay-green phenotype in cZOGT1-overexpressing lines. This study provides a new theoretical basis to explain the mechanism underlying the wheat stay-green phenotype and provides a genetic resource for wheat molecular-design breeding.
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Affiliation(s)
- Wenqiang Wang
- College of Life Sciences, Zaozhuang University, Zaozhuang, Shandong, China
- Spring Valley Agriscience Co., Ltd., Jinan, Shandong, China
| | - Gaungqiang Zhang
- College of Agriculture and Bioengineering, Heze University, Heze, Shandong, China
| | - Wenlong Wang
- Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University, Qingdao, China
| | - Zhigang Wang
- Spring Valley Agriscience Co., Ltd., Jinan, Shandong, China
| | - Yuelin Lv
- College of Life Sciences, Zaozhuang University, Zaozhuang, Shandong, China
| | - Fenxia Guo
- College of Life Sciences, Zaozhuang University, Zaozhuang, Shandong, China
| | - Yindi Di
- College of Life Sciences, Zaozhuang University, Zaozhuang, Shandong, China
| | - Jifa Zhang
- Spring Valley Agriscience Co., Ltd., Jinan, Shandong, China
| | - Yuhai Wang
- College of Life Sciences, Zaozhuang University, Zaozhuang, Shandong, China
| | - Wei Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, China
| | - Yuanyuan Li
- College of Life Sciences, Zaozhuang University, Zaozhuang, Shandong, China
| | - Qunqun Hao
- College of Life Sciences, Zaozhuang University, Zaozhuang, Shandong, China
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Zhou Y, Yao L, Huang X, Li Y, Wang C, Huang Q, Yu L, Pan C. Transcriptomics and metabolomics association analysis revealed the responses of Gynostemma pentaphyllum to cadmium. FRONTIERS IN PLANT SCIENCE 2023; 14:1265971. [PMID: 37877087 PMCID: PMC10591085 DOI: 10.3389/fpls.2023.1265971] [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: 07/24/2023] [Accepted: 09/22/2023] [Indexed: 10/26/2023]
Abstract
Gynostemma pentaphyllum an important medicinal herb, can absorb high amounts of cadmium (Cd) which can lead to excessive Cd contamination during the production of medicines and tea. Hence, it is crucial to investigate the response mechanism of G. pentaphyllum under Cd stress to develop varieties with low Cd accumulation and high tolerance. Physiological response analysis, transcriptomics and metabolomics were performed on G. pentaphyllum seedlings exposed to Cd stress. Herein, G. pentaphyllum seedlings could significantly enhance antioxidant enzyme activities (POD, CAT and APX), proline and polysaccharide content subject to Cd stress. Transcriptomics analysis identified the secondary metabolites, carbohydrate metabolism, amino acid metabolism, lipid metabolism, and signal transduction pathways associated with Cd stress, which mainly involved the XTH, EXP and GST genes. Metabolomics analysis identified 126 differentially expressed metabolites, including citric acid, flavonoid and amino acids metabolites, which were accumulated under Cd stress. Multi-omics integrative analysis unraveled that the phenylpropanoid biosynthesis, starch, and sucrose metabolism, alpha-linolenic acid metabolism, and ABC transporter were significantly enriched at the gene and metabolic levels in response to Cd stress in G. pentaphyllum. In conclusion, the genetic regulatory network sheds light on Cd response mechanisms in G. pentaphyllum.
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Affiliation(s)
- Yunyi Zhou
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Lixiang Yao
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Xueyan Huang
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Ying Li
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Chunli Wang
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Qinfen Huang
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Liying Yu
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
| | - Chunliu Pan
- Guangxi Traditional Chinese Medicine (TCM) Resources General Survey and Data Collection Key Laboratory, the Center for Phylogeny and Evolution of Medicinal Plants, National Center for TCM Inheritance and Innovation, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
- National Engineering Research Center for Southwest Endangered Medicinal Materials Resources Development, Guangxi Botanical Garden of Medicinal Plants, Nanning, China
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Wang H, Yu J, Zhu B, Gu L, Wang H, Du X, Zeng T, Tang H. The SbbHLH041- SbEXPA11 Module Enhances Cadmium Accumulation and Rescues Biomass by Increasing Photosynthetic Efficiency in Sorghum. Int J Mol Sci 2023; 24:13061. [PMID: 37685867 PMCID: PMC10487693 DOI: 10.3390/ijms241713061] [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: 08/07/2023] [Revised: 08/18/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
In plants, expansin genes are responsive to heavy metal exposure. To study the bioremediary potential of this important gene family, we discovered a root-expressed expansin gene in sorghum, SbEXPA11, which is notably upregulated following cadmium (Cd) exposure. However, the mechanism underlying the Cd detoxification and accumulation mediated by SbEXPA11 in sorghum remains unclear. We overexpressed SbEXPA11 in sorghum and compared wild-type (WT) and SbEXPA11-overexpressing transgenic sorghum in terms of Cd accumulation and physiological indices following Cd. Compared with the WT, we found that SbEXPA11 mediates Cd tolerance by exerting reactive oxygen species (ROS)-scavenging effects through upregulating the expression of antioxidant enzymes. Moreover, the overexpression of SbEXPA11 rescued biomass production by increasing the photosynthetic efficiency of transgenic plants. In the pot experiment with a dosage of 10 mg/kg Cd, transgenic sorghum plants demonstrated higher efficacy in reducing the Cd content of the soil (8.62 mg/kg) compared to WT sorghum plants (9.51 mg/kg). Subsequent analysis revealed that the SbbHLH041 transcription factor has the ability to induce SbEXPA11 expression through interacting with the E-box located within the SbEXPA11 promoter. These findings suggest that the SbbHLH041-SbEXPA11 cascade module may be beneficial for the development of phytoremediary sorghum varieties.
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Affiliation(s)
- Huinan Wang
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (H.W.); (J.Y.); (B.Z.); (L.G.); (H.W.); (X.D.)
| | - Junxing Yu
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (H.W.); (J.Y.); (B.Z.); (L.G.); (H.W.); (X.D.)
| | - Bin Zhu
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (H.W.); (J.Y.); (B.Z.); (L.G.); (H.W.); (X.D.)
| | - Lei Gu
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (H.W.); (J.Y.); (B.Z.); (L.G.); (H.W.); (X.D.)
| | - Hongcheng Wang
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (H.W.); (J.Y.); (B.Z.); (L.G.); (H.W.); (X.D.)
| | - Xuye Du
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (H.W.); (J.Y.); (B.Z.); (L.G.); (H.W.); (X.D.)
| | - Tuo Zeng
- School of Life Sciences, Guizhou Normal University, Guiyang 550025, China; (H.W.); (J.Y.); (B.Z.); (L.G.); (H.W.); (X.D.)
| | - Heng Tang
- National Key Laboratory of Wheat Breeding, Agronomy College, Shandong Agricultural University, Tai’an 271002, China
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Zhou M, Zheng S. Multi-Omics Uncover the Mechanism of Wheat under Heavy Metal Stress. Int J Mol Sci 2022; 23:ijms232415968. [PMID: 36555610 PMCID: PMC9785819 DOI: 10.3390/ijms232415968] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/08/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Environmental pollution of heavy metals has received growing attention in recent years. Heavy metals such as cadmium, lead and mercury can cause physiological and morphological disturbances which adversely affect the growth and quality of crops. Wheat (Triticum aestivum L.) can accumulate high contents of heavy metals in its edible parts. Understanding wheat response to heavy metal stress and its management in decreasing heavy metal uptake and accumulation may help to improve its growth and grain quality. Very recently, emerging advances in heavy metal toxicity and phytoremediation methods to reduce heavy metal pollution have been made in wheat. Especially, the molecular mechanisms of wheat under heavy metal stress are increasingly being recognized. In this review, we focus on the recently described epigenomics, transcriptomics, proteomics, metabolomics, ionomics and multi-omics combination, as well as functional genes uncovering heavy metal stress in wheat. The findings in this review provide some insights into challenges and future recommendations for wheat under heavy metal stress.
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Affiliation(s)
- Min Zhou
- School of Life Sciences, Chongqing University, Chongqing 401331, China
- Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, Chongqing 401331, China
| | - Shigang Zheng
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
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Tian F, Han C, Chen X, Wu X, Mi J, Wan X, Liu Q, He F, Chen L, Yang H, Zhong Y, Qian Z, Zhang F. PscCYP716A1-Mediated Brassinolide Biosynthesis Increases Cadmium Tolerance and Enrichment in Poplar. FRONTIERS IN PLANT SCIENCE 2022; 13:919682. [PMID: 35865284 PMCID: PMC9294640 DOI: 10.3389/fpls.2022.919682] [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: 04/13/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd), as one of the heavy metals with biological poisonousness, seriously suppresses plant growth and does harm to human health. Hence, phytoremediation was proposed to mitigate the negative effects from Cd and restore contaminated soil. However, the internal mechanisms of detoxification of Cd used in phytoremediation are not completely revealed. In this study, we cloned the cytochrome P450 gene PscCYP716A1 from hybrid poplar "Chuanxiang No. 1" and found that the PscCYP716A1 was transcriptionally upregulated by Cd stress and downregulated by the exogenous brassinolide (BR). Meanwhile, PscCYP716A1 significantly promoted the poplar growth and enhanced the Cd accumulation in poplar. Compared to wild-type poplars, overexpressed PscCYP716A1 lines produced higher levels of endogenous BR and showed a stronger tolerance to Cd, which revealed that PscCYP716A1 may reduce the oxidative stress damage induced by Cd stress through accelerating BR synthesis. In general, PscCYP716A1 has a potential superiority in regulating the plant's tolerance to Cd stress, which will provide a scientific basis and a new type of gene-modified poplar for Cd-pollution remediation.
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Affiliation(s)
- Feifei Tian
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Chengyu Han
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Xiaoxi Chen
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Xiaolu Wu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Jiaxuan Mi
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Xueqin Wan
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Qinglin Liu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Fang He
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Lianghua Chen
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Hanbo Yang
- College of Forestry, Sichuan Agricultural University, Chengdu, China
| | - Yu Zhong
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Zongliang Qian
- Forestry and Grassland Bureau of Ganzi Prefecture, Kangding, China
| | - Fan Zhang
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
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8
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Samalova M, Gahurova E, Hejatko J. Expansin-mediated developmental and adaptive responses: A matter of cell wall biomechanics? QUANTITATIVE PLANT BIOLOGY 2022; 3:e11. [PMID: 37077967 PMCID: PMC10095946 DOI: 10.1017/qpb.2022.6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 03/16/2022] [Accepted: 03/29/2022] [Indexed: 05/03/2023]
Abstract
Biomechanical properties of the cell wall (CW) are important for many developmental and adaptive responses in plants. Expansins were shown to mediate pH-dependent CW enlargement via a process called CW loosening. Here, we provide a brief overview of expansin occurrence in plant and non-plant species, their structure and mode of action including the role of hormone-regulated CW acidification in the control of expansin activity. We depict the historical as well as recent CW models, discuss the role of expansins in the CW biomechanics and address the developmental importance of expansin-regulated CW loosening in cell elongation and new primordia formation. We summarise the data published so far on the role of expansins in the abiotic stress response as well as the rather scarce evidence and hypotheses on the possible mechanisms underlying expansin-mediated abiotic stress resistance. Finally, we wrap it up by highlighting possible future directions in expansin research.
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Affiliation(s)
- Marketa Samalova
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Evelina Gahurova
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- National Centre for Biotechnological Research, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Jan Hejatko
- CEITEC - Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- National Centre for Biotechnological Research, Faculty of Science, Masaryk University, Brno, Czech Republic
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Hu J, Chen G, Xu K, Wang J. Cadmium in Cereal Crops: Uptake and Transport Mechanisms and Minimizing Strategies. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:5961-5974. [PMID: 35576456 DOI: 10.1021/acs.jafc.1c07896] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Cadmium (Cd) contamination in soils and accumulation in cereal grains have posed food security risks and serious health concerns worldwide. Understanding the Cd transport process and its management for minimizing Cd accumulation in cereals may help to improve crop growth and grain quality. In this review, we summarize Cd uptake, translocation, and accumulation mechanisms in cereal crops and discuss efficient measures to reduce Cd uptake as well as potential remediation strategies, including the applications of plant growth regulators, microbes, nanoparticles, and cropping systems and developing low-Cd grain cultivars by CRISPR/Cas9. In addition, miRNAs modulate Cd translocation, and accumulation in crops through the regulation of their target genes was revealed. Combined use of multiple remediation methods may successfully decrease Cd concentrations in cereals. The findings in this review provide some insights into innovative and applicable approaches for reducing Cd accumulation in cereal grains and sustainable management of Cd-contaminated paddy fields.
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Affiliation(s)
- Jihong Hu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling 712100, Shaanxi, China
- Oil Crops Research Institute, Chinese Academy of Agricultural Sciences, Wuhan 430062, China
| | - Guanglong Chen
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
| | - Kui Xu
- Hubei Key Laboratory of Edible Wild Plants Conservation and Utilization, and Hubei Engineering Research Center of Special Wild Vegetables Breeding and Comprehensive Utilization Technology, College of Life Sciences, Hubei Normal University, Huangshi 435002, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou 510006, China
| | - Jun Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China
- Institute of Eco-Environmental Research, Guangxi Academy of Sciences, Nanning 530007, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangzhou 510006, China
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Feng X, Li C, He F, Xu Y, Li L, Wang X, Chen Q, Li F. Genome-Wide Identification of Expansin Genes in Wild Soybean ( Glycine soja) and Functional Characterization of Expansin B1 ( GsEXPB1) in Soybean Hair Root. Int J Mol Sci 2022; 23:5407. [PMID: 35628217 PMCID: PMC9140629 DOI: 10.3390/ijms23105407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/10/2022] [Accepted: 05/10/2022] [Indexed: 11/30/2022] Open
Abstract
Wild soybean, the progenitor and close relative of cultivated soybean, has an excellent environmental adaptation ability and abundant resistance genes. Expansins, as a class of cell wall relaxation proteins, have important functions in regulating plant growth and stress resistance. In the present study, we identified a total of 75 members of the expansin family on the basis of recent genomic data published for wild soybean. The predicted results of promoter elements structure showed that wild soybean expansin may be associated with plant hormones, stress responses, and growth. Basal transcriptome data of vegetative organs suggest that the transcription of expansin members has some organ specificity. Meanwhile, the transcripts of some members had strong responses to salt, low temperature and drought stress. We screened and obtained an expansin gene, GsEXPB1, which is transcribed specifically in roots and actively responds to salt stress. The results of A. tumefaciens transient transfection showed that this protein was localized in the cell wall of onion epidermal cells. We initially analyzed the function of GsEXPB1 by a soybean hairy root transformation assay and found that overexpression of GsEXPB1 significantly increased the number of hairy roots, root length, root weight, and the tolerance to salt stress. This research provides a foundation for subsequent studies of expansins in wild soybean.
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Affiliation(s)
- Xu Feng
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
- Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Cuiting Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Fumeng He
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Yongqing Xu
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Li Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Xue Wang
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
| | - Qingshan Chen
- College of Agriculture, Northeast Agricultural University, Harbin 150030, China
| | - Fenglan Li
- College of Life Sciences, Northeast Agricultural University, Harbin 150030, China; (X.F.); (C.L.); (F.H.); (Y.X.); (L.L.); (X.W.)
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11
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Backiyarani S, Anuradha C, Thangavelu R, Chandrasekar A, Renganathan B, Subeshkumar P, Giribabu P, Muthusamy M, Uma S. Genome-wide identification, characterization of expansin gene family of banana and their expression pattern under various stresses. 3 Biotech 2022; 12:101. [PMID: 35463044 PMCID: PMC8960517 DOI: 10.1007/s13205-021-03106-x] [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: 10/30/2021] [Accepted: 12/28/2021] [Indexed: 11/01/2022] Open
Abstract
Expansin, a cell wall-modifying gene family, has been well characterized and its role in biotic and abiotic stress resistance has been proven in many monocots, but not yet studied in banana, a unique model crop. Banana is one of the staple food crops in developing countries and its production is highly influenced by various biotic and abiotic factors. Characterizing the expansin genes of the ancestor genome (M. acuminata and M. balbisiana) of present day cultivated banana will enlighten their role in growth and development, and stress responses. In the present study, 58 (MaEXPs) and 55 (MbaEXPs) putative expansin genes were identified in A and B genome, respectively, and were grouped in four subfamilies based on phylogenetic analysis. Gene structure and its duplications revealed that EXPA genes are highly conserved and are under negative selection whereas the presence of more number of introns in other subfamilies revealed that they are diversifying. Expression profiling of expansin genes showed a distinct expression pattern for biotic and abiotic stress conditions. This study revealed that among the expansin subfamilies, EXPAs contributed significantly towards stress-resistant mechanism. The differential expression of MaEXPA18 and MaEXPA26 under drought stress conditions in the contrasting cultivar suggested their role in drought-tolerant mechanism. Most of the MaEXPA genes are differentially expressed in the root lesion nematode contrasting cultivars which speculated that this expansin subfamily might be the susceptible factor. The downregulation of MaEXPLA6 in resistant cultivar during Sigatoka leaf spot infection suggested that by suppressing this gene, resistance may be enhanced in susceptible cultivar. Further, in-depth studies of these genes will lead to gain insight into their role in various stress conditions in banana. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-021-03106-x.
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Affiliation(s)
- Suthanthiram Backiyarani
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
| | - Chelliah Anuradha
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
| | - Raman Thangavelu
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
| | - Arumugam Chandrasekar
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
| | - Baratvaj Renganathan
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
| | - Parasuraman Subeshkumar
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
| | - Palaniappan Giribabu
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
| | - Muthusamy Muthusamy
- Department of Agricultural Biotechnology, National Institute of Agricultural Sciences (NAS), RDA, Jeonju, 54874 Korea
| | - Subbaraya Uma
- ICAR-National Research Centre for Banana, Thogamalai Road, Thayanur Post, Tiruchchirappalli, Tamil Nadu 620 102 India
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12
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Zulfiqar U, Jiang W, Xiukang W, Hussain S, Ahmad M, Maqsood MF, Ali N, Ishfaq M, Kaleem M, Haider FU, Farooq N, Naveed M, Kucerik J, Brtnicky M, Mustafa A. Cadmium Phytotoxicity, Tolerance, and Advanced Remediation Approaches in Agricultural Soils; A Comprehensive Review. FRONTIERS IN PLANT SCIENCE 2022; 13:773815. [PMID: 35371142 PMCID: PMC8965506 DOI: 10.3389/fpls.2022.773815] [Citation(s) in RCA: 64] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 02/02/2022] [Indexed: 05/03/2023]
Abstract
Cadmium (Cd) is a major environmental contaminant due to its widespread industrial use. Cd contamination of soil and water is rather classical but has emerged as a recent problem. Cd toxicity causes a range of damages to plants ranging from germination to yield suppression. Plant physiological functions, i.e., water interactions, essential mineral uptake, and photosynthesis, are also harmed by Cd. Plants have also shown metabolic changes because of Cd exposure either as direct impact on enzymes or other metabolites, or because of its propensity to produce reactive oxygen species, which can induce oxidative stress. In recent years, there has been increased interest in the potential of plants with ability to accumulate or stabilize Cd compounds for bioremediation of Cd pollution. Here, we critically review the chemistry of Cd and its dynamics in soil and the rhizosphere, toxic effects on plant growth, and yield formation. To conserve the environment and resources, chemical/biological remediation processes for Cd and their efficacy have been summarized in this review. Modulation of plant growth regulators such as cytokinins, ethylene, gibberellins, auxins, abscisic acid, polyamines, jasmonic acid, brassinosteroids, and nitric oxide has been highlighted. Development of plant genotypes with restricted Cd uptake and reduced accumulation in edible portions by conventional and marker-assisted breeding are also presented. In this regard, use of molecular techniques including identification of QTLs, CRISPR/Cas9, and functional genomics to enhance the adverse impacts of Cd in plants may be quite helpful. The review's results should aid in the development of novel and suitable solutions for limiting Cd bioavailability and toxicity, as well as the long-term management of Cd-polluted soils, therefore reducing environmental and human health hazards.
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Affiliation(s)
- Usman Zulfiqar
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Wenting Jiang
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Wang Xiukang
- College of Life Sciences, Yan’an University, Yan’an, China
| | - Saddam Hussain
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Ahmad
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | | | - Nauman Ali
- Agronomic Research Institute, Ayub Agricultural Research Institute, Faisalabad, Pakistan
| | - Muhammad Ishfaq
- Department of Agronomy, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Muhammad Kaleem
- Department of Botany, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Fasih Ullah Haider
- College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, China
| | - Naila Farooq
- Department of Soil and Environmental Science, College of Agriculture, University of Sargodha, Sargodha, Pakistan
| | - Muhammad Naveed
- Institute of Soil and Environmental Science, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Jiri Kucerik
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Brno, Czechia
| | - Martin Brtnicky
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Brno, Czechia
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
| | - Adnan Mustafa
- Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Brno, Czechia
- Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Brno, Czechia
- Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Prague, Czechia
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13
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Yang Z, Yang F, Liu JL, Wu HT, Yang H, Shi Y, Liu J, Zhang YF, Luo YR, Chen KM. Heavy metal transporters: Functional mechanisms, regulation, and application in phytoremediation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 809:151099. [PMID: 34688763 DOI: 10.1016/j.scitotenv.2021.151099] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 10/15/2021] [Accepted: 10/16/2021] [Indexed: 05/22/2023]
Abstract
Heavy metal pollution in soil is a global problem with serious impacts on human health and ecological security. Phytoextraction in phytoremediation, in which plants uptake and transport heavy metals (HMs) to the tissues of aerial parts, is the most environmentally friendly method to reduce the total amount of HMs in soil and has wide application prospects. However, the molecular mechanism of phytoextraction is still under investigation. The uptake, translocation, and retention of HMs in plants are mainly mediated by a variety of transporter proteins. A better understanding of the accumulation strategy of HMs via transporters in plants is a prerequisite for the improvement of phytoextraction. In this review, the biochemical structure and functions of HM transporter families in plants are systematically summarized, with emphasis on their roles in phytoremediation. The accumulation mechanism and regulatory pathways related to hormones, regulators, and reactive oxygen species (ROS) of HMs concerning these transporters are described in detail. Scientific efforts and practices for phytoremediation carried out in recent years suggest that creation of hyperaccumulators by transgenic or gene editing techniques targeted to these transporters and their regulators is the ultimate powerful path for the phytoremediation of HM contaminated soils.
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Affiliation(s)
- Zi Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Fan Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jia-Lan Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hai-Tao Wu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Hao Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yi Shi
- Guangdong Kaiyuan Environmental Technology Co., Ltd, Dongguan 523000, China
| | - Jie Liu
- Guangdong Kaiyuan Environmental Technology Co., Ltd, Dongguan 523000, China
| | - Yan-Feng Zhang
- Hybrid Rapeseed Research Center of Shaanxi Province, Yangling 712100, Shaanxi, China
| | - Yan-Rong Luo
- Guangdong Kaiyuan Environmental Technology Co., Ltd, Dongguan 523000, China.
| | - Kun-Ming Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China.
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14
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Genome-wide identification of expansin gene family in barley and drought-related expansins identification based on RNA-seq. Genetica 2021; 149:283-297. [PMID: 34643833 DOI: 10.1007/s10709-021-00136-4] [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: 03/31/2021] [Accepted: 09/23/2021] [Indexed: 10/20/2022]
Abstract
Expansins are cell wall loosening proteins and involved in various developmental processes and abiotic stress. No systematic research, however, has been conducted on expansin genes family in barley. A total of 46 expansins were identified and could be classified into three subfamilies in Hordeum vulgare: HvEXPA, HvEXPB, and HvEXLA. All expansin proteins contained two conserved domains: DPBB_1 and Pollen_allerg_1. Expansins, in the same subfamily, share similar motifs composition and exon-intron organization; but greater differences were found among different subfamilies. Expansins are distributed unevenly on 7 barley chromosomes; tandem duplicates, including the collinear tandem array, contribute to the forming of the expansin genes family in barley with few whole-genome duplication events. Most HvEXPAs mainly expressed in embryonic and root tissues. HvEXPBs and HvEXLAs showed different expression patterns in 16 tissues during different developmental stages. In response to water deficit, expansins in wild barley were more sensitive than that in cultivated barley; the expressions of HvEXPB5 and HvEXPB6 were significantly induced in wild barley under drought stress. Our study provides a comprehensive and systematic analysis of the barley expansin genes in genome-wide level. This information will lay a solid foundation for further functional exploration of expansin genes in plant development and drought stress tolerance.
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15
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Gomez Mansur NM, Pena LB, Bossio AE, Lewi DM, Beznec AY, Blumwald E, Arbona V, Gómez-Cadenas A, Benavides MP, Gallego SM. An isopentenyl transferase transgenic wheat isoline exhibits less seminal root growth impairment and a differential metabolite profile under Cd stress. PHYSIOLOGIA PLANTARUM 2021; 173:223-234. [PMID: 33629739 DOI: 10.1111/ppl.13366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 01/05/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
Cadmium is one of the most important contaminants and it induces severe plant growth restriction. In this study, we analyzed the metabolic changes associated with root growth restriction caused by cadmium in the early seminal root apex of wheat. Our study included two genotypes: the commercial variety ProINTA Federal (WT) and the PSARK ::IPT (IPT) line which exhibit high-grade yield performance under water deficit. Root tips of seedlings grown for 72 h without or with 10 μM CdCl2 (Cd-WT and Cd-IPT) were compared. Root length reduction was more severe in Cd-WT than Cd-IPT. Cd decreased superoxide dismutase activity in both lines and increased catalase activity only in the WT. In Cd-IPT, ascorbate and guaiacol peroxidase activities raised compared to Cd-WT. The hormonal homeostasis was altered by the metal, with significant decreases in abscisic acid, jasmonic acid, 12-oxophytodienoic acid, gibberellins GA20, and GA7 levels. Increases in flavonoids and phenylamides were also found. Root growth impairment was not associated with a decrease in expansin (EXP) transcripts. On the contrary, TaEXPB8 expression increased in the WT treated by Cd. Our findings suggest that the line expressing the PSARK ::IPT construction increased the homeostatic range to cope with Cd stress, which is visible by a lesser reduction of the root elongation compared to WT plants. The decline of root growth produced by Cd was associated with hormonal imbalance at the root apex level. We hypothesize that activation of phenolic secondary metabolism could enhance antioxidant defenses and contribute to cell wall reinforcement to deal with Cd toxicity.
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Affiliation(s)
- Nabila M Gomez Mansur
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
| | - Liliana B Pena
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
| | - Adrián E Bossio
- Instituto de Genética E. A. Favret, CICVyA, INTA. N. Repetto y de los Reseros s/n, Hurlingham, Argentina
| | - Dalia M Lewi
- Instituto de Genética E. A. Favret, CICVyA, INTA. N. Repetto y de los Reseros s/n, Hurlingham, Argentina
| | - Ailin Y Beznec
- Instituto de Genética E. A. Favret, CICVyA, INTA. N. Repetto y de los Reseros s/n, Hurlingham, Argentina
| | - Eduardo Blumwald
- Department of Plant Sciences, University of California, California, USA
| | - Vicent Arbona
- Departament de Ciències Agràries i del Medi Natural, Ecofisiologia i Biotecnologia. Campus Riu Sec, Universitat Jaume I, Castelló de la Plana, Spain
| | - Aurelio Gómez-Cadenas
- Departament de Ciències Agràries i del Medi Natural, Ecofisiologia i Biotecnologia. Campus Riu Sec, Universitat Jaume I, Castelló de la Plana, Spain
| | - María P Benavides
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
| | - Susana M Gallego
- Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires-Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas "Profesor Alejandro C. Paladini" (IQUIFIB), Buenos Aires, Argentina
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16
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Brasileiro ACM, Lacorte C, Pereira BM, Oliveira TN, Ferreira DS, Mota APZ, Saraiva MAP, Araujo ACG, Silva LP, Guimaraes PM. Ectopic expression of an expansin-like B gene from wild Arachis enhances tolerance to both abiotic and biotic stresses. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 107:1681-1696. [PMID: 34231270 DOI: 10.1111/tpj.15409] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 06/22/2021] [Accepted: 06/30/2021] [Indexed: 05/15/2023]
Abstract
Plant expansins are structural cell wall-loosening proteins implicated in several developmental processes and responses to environmental constraints and pathogen infection. To date, there is limited information about the biological function of expansins-like B (EXLBs), one of the smallest and less-studied subfamilies of plant expansins. In the present study, we conducted a functional analysis of the wild Arachis AdEXLB8 gene in transgenic tobacco (Nicotiana tabacum) plants to clarify its putative role in mediating defense responses to abiotic and biotic stresses. First, its cell wall localization was confirmed in plants expressing an AdEXLB8:eGFP fusion protein, while nanomechanical assays indicated cell wall reorganization and reassembly due to AdEXLB8 overexpression without compromising the phenotype. We further demonstrated that AdEXLB8 increased tolerance not only to isolated abiotic (drought) and biotic (Sclerotinia sclerotiorum and Meloidogyne incognita) stresses but also to their combination. The jasmonate and abscisic acid signaling pathways were clearly favored in transgenic plants, showing an activated antioxidative defense system. In addition to modifications in the biomechanical properties of the cell wall, we propose that AdEXLB8 overexpression interferes with phytohormone dynamics leading to a defense primed state, which culminates in plant defense responses against isolated and combined abiotic and biotic stresses.
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Affiliation(s)
| | | | - Bruna M Pereira
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | - Thais N Oliveira
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | - Deziany S Ferreira
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
- Universidade de Brasília, Brasília, Brazil
| | - Ana P Z Mota
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | | | - Ana C G Araujo
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
| | - Luciano P Silva
- EMBRAPA Recursos Genéticos e Biotecnologia, Brasília, DF, Brazil
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17
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Zhang T, Li C, Shi W, Zhu Y, Chen Y, Nie Y, Sun J, Ai S. Enhanced removal of Cd (II) from aqueous solution by EDTA functionalized three-dimensional magnetic nitrogen-doped porous carbon. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:32035-32045. [PMID: 33624239 DOI: 10.1007/s11356-021-13028-z] [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: 10/07/2020] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Abstract
In this paper, three-dimensional magnetic nitrogen-doped porous carbon modified by EDTA (N-MPC-EDTA) was successfully prepared by two-step method with lignin as the precursor, and was used for the removal of Cd (II). The 3D adsorbents were characterized by SEM, TEM, BET, XRD, XPS, Zeta potential, and element mapping analysis techniques, and the performance of the materials was tested by the batch adsorption method. The influence of experimental parameters such as contact time and pH value on the adsorption capacity of N-MPC-EDTA on Cd (II) was studied. Under the optimal conditions, the equilibrium adsorption capacity of Cd (II) was 43.68 mg∙ L-1 and the adsorption equilibrium was quickly reached within 45 min. A possible adsorption mechanism was proposed, in which the chelation of EDTA as well as the electrostatic attraction of hydroxyl, carboxyl, and nitrogen-containing functional groups dominated the adsorption of Cd (II). The adsorption kinetics and isotherm data fitted well with the pseudo-second-order kinetic model and Freundlich model, respectively. In addition, the good regeneration performance suggested that N-MPC-EDTA will have a broad application prospect in water treatment.
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Affiliation(s)
- Ting Zhang
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Changyu Li
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Weijie Shi
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China.
| | - Yifan Zhu
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Yan Chen
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China
| | - Yongxin Nie
- College of Life Sciences, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China.
| | - Jianchao Sun
- School of Environment and Materials Engineering, Yantai University, Yantai, 264005, Shandong, People's Republic of China
| | - Shiyun Ai
- College of Chemistry and Material Science, Shandong Agricultural University, Taian, 271018, Shandong, People's Republic of China.
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18
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Degradation of methylene blue by a heterogeneous Fenton reaction catalyzed by FeCo2O4-N-C nanocomposites derived by ZIFs. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.01.051] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Zhu T, Li L, Duan Q, Liu X, Chen M. Progress in our understanding of plant responses to the stress of heavy metal cadmium. PLANT SIGNALING & BEHAVIOR 2021; 16:1836884. [PMID: 33084518 PMCID: PMC7781755 DOI: 10.1080/15592324.2020.1836884] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 10/09/2020] [Accepted: 10/11/2020] [Indexed: 05/30/2023]
Abstract
Heavy metal pollution is a major environmental stress affecting plant growth and development. The heavy metal cadmium inhibits various physiological processes in plants, including seed germination and seedling growth, photosynthesis, and antioxidation. Extensive research has been conducted on the toxic effects of Cd2+ on plants and the mechanisms of Cd2+ tolerance. Here, we review recent advancements in our understanding of the absorption, transport, and accumulation of Cd2+ in plants and the mechanisms of Cd2+ tolerance.
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Affiliation(s)
- Tingting Zhu
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Shandong, PR China
| | - Lingyu Li
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Shandong, PR China
| | - Qixin Duan
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Shandong, PR China
| | - Xiuling Liu
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Shandong, PR China
| | - Min Chen
- Shandong Provincial Key Laboratory of Plant Stress Research, College of Life Science, Shandong Normal University, Shandong, PR China
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20
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Health Risk Assessment of Heavy Metals in Soils before Rice Sowing and at Harvesting in Southern Jiangsu Province, China. J CHEM-NY 2020. [DOI: 10.1155/2020/7391934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Rice, one of the most important staple crops in China, is easily contaminated by heavy metal pollution from industrial development. In this work, we systematically investigated the heavy metal (Cr, Cd, Pb, Zn, and Cu) and metalloid (Hg and As) concentrations in paddy soils and different rice tissues in southern Jiangsu Province, China. The potential ecological hazard index method and in vitro simulation test were used to evaluate the influence of heavy metals on local resident health. The results showed that, before rice sowing and at the harvesting period, the order of Eri values was EriCd>EriHg>EriAs>EriPb>EriCu>EriCr>EriZn. The low-risk index values (91.63 and 30.29) for the heavy metals indicated the low risk at the two stages in the study area based on the potential ecological hazard index. As determined with Tessier’s five-stage sequential extraction procedure, the proportions of the chemical speciation of the heavy metals were as follows: residual > organic matter-bound > iron-manganese oxide-bound > carbonate-bound > exchangeable. The order of the values of the accumulation and transfer factors was Cd (3.16) > Cu (0.42) > Zn (0.28) > Pb (0.25) > As (0.07) > Cr (0.04) > Cr (0.03) and root > stem > leaves, respectively. In vitro simulation tests showed that, in both adults and children, the daily amount of Pb and Cd intake through the soil-oral cavity route in the study area did not exceed the daily tolerance for Pb and Cd proposed by the WHO. In summary, although there is no obvious danger to local adults and children, it is necessary to be aware of the possibility of rice contamination from Cd in the soil.
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Yang J, Zhang G, An J, Li Q, Chen Y, Zhao X, Wu J, Wang Y, Hao Q, Wang W, Wang W. Expansin gene TaEXPA2 positively regulates drought tolerance in transgenic wheat (Triticum aestivum L.). PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 298:110596. [PMID: 32771153 DOI: 10.1016/j.plantsci.2020.110596] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 07/03/2020] [Accepted: 07/05/2020] [Indexed: 05/08/2023]
Abstract
Expansins loosen plant cell walls and are involved in cell enlargement and various abiotic stresses. In previous studies, we cloned the expansin gene TaEXPA2 from the wheat cultivar HF9703. Here, we studied its function and regulation in wheat drought stress tolerance. The results indicated that TaEXPA2-overexpressing wheat plants (OE) exhibited drought tolerant phenotypes, whereas down-regulation of TaEXPA2 by RNA interference (RNAi) resulted in elevated drought sensitivity, as measured by survival rate, photosynthetic rate and water containing ability under drought stress. Overexpression of TaEXPA2 enhanced the antioxidant capacity in wheat plants, via elevation of antioxidant enzyme activity and the increase of the transcripts of some ROS scavenging enzyme-related genes. Further investigation revealed that TaEXPA2 positively influenced lateral root formation under drought conditions. A MYB transcription factor of wheat named TaMPS activates TaEXPA2 expression directly by binding to its promoter. Overexpression of TaMPS in Arabidopsis conferred drought tolerance associated with improved lateral root number, and the close homolog genes of TaEXPA2 were up-regulated in Arabidopsis roots overexpressing TaMPS, which suggest that TaMPS may function as one of the regulator of TaEXPA2 gene expression in the root lateral development under drought stress. These findings suggest that TaEXPA2 positively regulates drought stress tolerance in wheat.
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Affiliation(s)
- Junjiao Yang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Guangqiang Zhang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Jie An
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Qinxue Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Yanhui Chen
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China; Research Institute of Pomology of Chinese Academy of Agricultural Sciences, Xingcheng 125100, Liaoning, China
| | - Xiaoyu Zhao
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Jiajie Wu
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Yong Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China
| | - Qunqun Hao
- College of Life Sciences, Zaozhuang University, Zaozhuang 277160, Shandong, China
| | - Wenqiang Wang
- College of Life Sciences, Zaozhuang University, Zaozhuang 277160, Shandong, China.
| | - Wei Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an 271018, Shandong, China.
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Zhang H, Zhang X, Liu J, Niu Y, Chen Y, Hao Y, Zhao J, Sun L, Wang H, Xiao J, Wang X. Characterization of the Heavy-Metal-Associated Isoprenylated Plant Protein ( HIPP) Gene Family from Triticeae Species. Int J Mol Sci 2020; 21:E6191. [PMID: 32867204 PMCID: PMC7504674 DOI: 10.3390/ijms21176191] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 08/17/2020] [Accepted: 08/25/2020] [Indexed: 12/12/2022] Open
Abstract
Heavy-metal-associated (HMA) isoprenylated plant proteins (HIPPs) only exist in vascular plants. They play important roles in responses to biotic/abiotic stresses, heavy-metal homeostasis, and detoxification. However, research on the distribution, diversification, and function of HIPPs in Triticeae species is limited. In this study, a total of 278 HIPPs were identified from a database from five Triticeae species, and 13 were cloned from Haynaldia villosa. These genes were classified into five groups by phylogenetic analysis. Most HIPPs had one HMA domain, while 51 from Clade I had two, and all HIPPs had good collinear relationships between species or subgenomes. In silico expression profiling revealed that 44 of the 114 wheat HIPPs were dominantly expressed in roots, 43 were upregulated under biotic stresses, and 29 were upregulated upon drought or heat treatment. Subcellular localization analysis of the cloned HIPPs from H. villosa showed that they were expressed on the plasma membrane. HIPP1-V was upregulated in H. villosa after Cd treatment, and transgenic wheat plants overexpressing HIPP1-V showed enhanced Cd tolerance, as shown by the recovery of seed-germination and root-growth inhibition by supplementary Cd. This research provides a genome-wide overview of the Triticeae HIPP genes and proved that HIPP1-V positively regulates Cd tolerance in common wheat.
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Affiliation(s)
- Heng Zhang
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Xu Zhang
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Jia Liu
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Ying Niu
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Yiming Chen
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Yongli Hao
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Jia Zhao
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
- College of Agriculture, South China Agriculture University, Guangzhou 510642, China
| | - Li Sun
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Haiyan Wang
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Jin Xiao
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
| | - Xiue Wang
- State Key Lab of Crop Genetics and Germplasm Enhancement, Cytogenetics Institute, Nanjing Agricultural University/JCIC-MCP, Nanjing 210095, China; (H.Z.); (X.Z.); (J.L.); (Y.N.); (Y.C.); (Y.H.); (J.Z.); (L.S.); (H.W.)
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Chen S, Luo Y, Wang G, Feng C, Li H. Genome-wide identification of expansin genes in Brachypodium distachyon and functional characterization of BdEXPA27. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2020; 296:110490. [PMID: 32540009 DOI: 10.1016/j.plantsci.2020.110490] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/24/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Plant expansin belongs to a group of cell wall proteins and functions in plant growth and development. However, limited data are available on the contributions of expansins in Brachypodium distachyon. In the present study, a total of 38 expansins were identified in B. distachyon genome. Phylogenetic analysis divided the expansins into four groups, namely EXPA, EXPB, EXLA, and EXLB. Chromosomal distribution showed that they were unevenly distributed on 4 chromosomes. A total of six tandem duplication pairs and four segmental duplication pairs were detected, which contributed to the expansion of the B. distachyon expansin gene family. Expansins in the same group shared similar gene structure and motif composition. Three types of cis-elements, development-related, hormone-related, and abiotic stresses-related elements were found in the B. distachyon expansin gene promoters. Expression profiles indicated that most of B. distachyon expansin genes participate in plant development and abiotic stress responses. Overexpression of BdEXPA27 increased seed width and length, root length, root hair number and length in Arabidopsis and showed higher germination rate in transgenic lines. This study establishes a foundation for further investigation of B. distachyon expansin genes and provides novel insights into their biological functions.
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Affiliation(s)
- Shoukun Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, 712000, China
| | - Yunxin Luo
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, 712000, China
| | - Guojing Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, 712000, China
| | - Cuizhu Feng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, 712000, China.
| | - Haifeng Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Agronomy, Northwest A&F University, Yangling, 712000, China.
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Xiao Y, Wu X, Liu D, Yao J, Liang G, Song H, Ismail AM, Luo JS, Zhang Z. Cell Wall Polysaccharide-Mediated Cadmium Tolerance Between Two Arabidopsis thaliana Ecotypes. FRONTIERS IN PLANT SCIENCE 2020; 11:473. [PMID: 32477379 PMCID: PMC7239314 DOI: 10.3389/fpls.2020.00473] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 03/30/2020] [Indexed: 05/07/2023]
Abstract
Cadmium (Cd) is a toxic metal element and the mechanism(s) underlying Cd tolerance in plants are still unclear. Increasingly more studies have been conducted on Cd binding to plant cell walls (CW) but most of them have focused on Cd fixation by CW pectin, and few studies have examined Cd binding to cellulose and hemicellulose. Here we found that Cd binding to CW pectin, cellulose, and hemicellulose was significantly higher in Tor-1, a Cd tolerant A. thaliana ecotype, than in Ph2-23, a sensitive ecotype, as were the concentrations of pectin, cellulose, and hemicellulose. Transcriptome analysis revealed that the genes regulating CW pectin, cellulose, and hemicellulose polysaccharide concentrations in Tor-1 differed significantly from those in Ph2-23. The expressions of most genes such as pectin methyl esterase inhibitors (PMEIs), pectin lyases, xyloglucan endotransglucosylase/hydrolase, expansins (EXPAs), and cellulose hydrolase were higher in Ph2-23, while the expressions of cellulose synthase-like glycosyltransferase 3 (CSLG3) and pectin ethyl esterase 4 (PAE4) were higher in Tor-1. The candidate genes identified here seem to regulate CW Cd fixation by polysaccharides. In conclusion, an increase in pectin demethylation activity, the higher concentration of cellulose and hemicellulose, regulated by related genes, in Tor-1 than in Ph2-23 are likely involved in enhanced Cd CW retention and reduce Cd toxicity.
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Affiliation(s)
- Yan Xiao
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | - Xiuwen Wu
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | - Dong Liu
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | - Junyue Yao
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | - Guihong Liang
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | - Haixing Song
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | | | - Jin-Song Luo
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
| | - Zhenhua Zhang
- Southern Regional Collaborative Innovation Centre for Grain and Oil Crops in China, College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha, China
- National Centre of Oilseed Crops Improvement, Hunan Branch, Changsha, China
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25
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Wang W, Wu Y, Shi R, Sun M, Li Q, Zhang G, Wu J, Wang Y, Wang W. Overexpression of wheat α-mannosidase gene TaMP impairs salt tolerance in transgenic Brachypodium distachyon. PLANT CELL REPORTS 2020; 39:653-667. [PMID: 32123996 DOI: 10.1007/s00299-020-02522-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Accepted: 02/15/2020] [Indexed: 06/10/2023]
Abstract
The TaMP gene from wheat encodes an α-mannosidase induced by salt stress that functions as negative regulator of salt tolerance in plants. Salt stress significantly affects growth and yield of crop plants. The α-mannosidases function in protein folding, trafficking, and endoplasmic reticulum-associated degradation in eukaryotic cells, and they are involved in abiotic stress tolerance in plants. Previously, we identified the α-mannosidase gene TaMP in wheat (Triticum aestivum). In this study, we investigated the function of TaMP in salt stress tolerance. TaMP expression was induced in wheat leaves by salt, drought, abscisic acid, and H2O2 treatments. Overexpressing TaMP in Brachypodium distachyon was associated with a salt-sensitive phenotype. Under salt stress, the overexpressing plants had reduced height, delayed growth status, low photosynthetic rate, decreased survival rate, and diminished yield. Moreover, the overexpression of TaMP aggravated the tendency for ions to become toxic under salt stress by significantly affecting the Na+ and K+ contents in cells. In addition, TaMP could negatively regulate salt tolerance by affecting the antioxidant enzyme system capacity and increasing the reactive oxygen species accumulation. Our study was helpful to understand the underlying physiological and molecular mechanisms of salt stress tolerance in plants.
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Affiliation(s)
- Wenlong Wang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Yunzhen Wu
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Ruirui Shi
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Mengwei Sun
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Qinxue Li
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Guangqiang Zhang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Jiajie Wu
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Yong Wang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China
| | - Wei Wang
- State Key Laboratory of Crop Biology, Shandong Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
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Expression of Two α-Type Expansins from Ammopiptanthus nanus in Arabidopsis thaliana Enhance Tolerance to Cold and Drought Stresses. Int J Mol Sci 2019; 20:ijms20215255. [PMID: 31652768 PMCID: PMC6862469 DOI: 10.3390/ijms20215255] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/11/2019] [Accepted: 10/17/2019] [Indexed: 12/25/2022] Open
Abstract
Expansins, cell-wall loosening proteins, play an important role in plant growth and development and abiotic stress tolerance. Ammopiptanthus nanus (A. nanus) is an important plant to study to understand stress resistance in forestry. In our previous study, two α-type expansins from A. nanus were cloned and named AnEXPA1 and AnEXPA2. In this study, we found that they responded to different abiotic stress and hormone signals. It suggests that they may play different roles in response to abiotic stress. Their promoters show some of the same element responses to abiotic stress and hormones, but some special elements were identified between the expansins that could be essential for their expression. In order to further testify the reliability of the above results, we conducted an analysis of β-glucuronidase (GUS) dyeing. The analysis showed that AnEXPA1 was only induced by cold stress, whereas AnEXPA2 responded to hormone induction. AnEXPA1 and AnEXPA2 transgenic Arabidopsis plants showed better tolerance to cold and drought stresses. Moreover, the ability to scavenge reactive oxygen species (ROS) was significantly improved in the transgenic plants, and expansin activity was enhanced. These results suggested that AnEXPA1 and AnEXPA2 play an important role in the response to abiotic stress. Our research contributes to a better understanding of the regulatory network of expansins and may benefit agricultural production.
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Huybrechts M, Cuypers A, Deckers J, Iven V, Vandionant S, Jozefczak M, Hendrix S. Cadmium and Plant Development: An Agony from Seed to Seed. Int J Mol Sci 2019; 20:ijms20163971. [PMID: 31443183 PMCID: PMC6718997 DOI: 10.3390/ijms20163971] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 08/08/2019] [Accepted: 08/09/2019] [Indexed: 12/19/2022] Open
Abstract
Anthropogenic pollution of agricultural soils with cadmium (Cd) should receive adequate attention as Cd accumulation in crops endangers human health. When Cd is present in the soil, plants are exposed to it throughout their entire life cycle. As it is a non-essential element, no specific Cd uptake mechanisms are present. Therefore, Cd enters the plant through transporters for essential elements and consequently disturbs plant growth and development. In this review, we will focus on the effects of Cd on the most important events of a plant's life cycle covering seed germination, the vegetative phase and the reproduction phase. Within the vegetative phase, the disturbance of the cell cycle by Cd is highlighted with special emphasis on endoreduplication, DNA damage and its relation to cell death. Furthermore, we will discuss the cell wall as an important structure in retaining Cd and the ability of plants to actively modify the cell wall to increase Cd tolerance. As Cd is known to affect concentrations of reactive oxygen species (ROS) and phytohormones, special emphasis is put on the involvement of these compounds in plant developmental processes. Lastly, possible future research areas are put forward and a general conclusion is drawn, revealing that Cd is agonizing for all stages of plant development.
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Affiliation(s)
- Michiel Huybrechts
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590 Diepenbeek, Belgium
| | - Ann Cuypers
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590 Diepenbeek, Belgium
| | - Jana Deckers
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590 Diepenbeek, Belgium
| | - Verena Iven
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590 Diepenbeek, Belgium
| | - Stéphanie Vandionant
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590 Diepenbeek, Belgium
| | - Marijke Jozefczak
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590 Diepenbeek, Belgium
| | - Sophie Hendrix
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, B-3590 Diepenbeek, Belgium.
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Belykh ES, Maystrenko TA, Velegzhaninov IO. Recent Trends in Enhancing the Resistance of Cultivated Plants to Heavy Metal Stress by Transgenesis and Transcriptional Programming. Mol Biotechnol 2019; 61:725-741. [DOI: 10.1007/s12033-019-00202-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Chen Y, Zhang B, Li C, Lei C, Kong C, Yang Y, Gong M. A comprehensive expression analysis of the expansin gene family in potato (Solanum tuberosum) discloses stress-responsive expansin-like B genes for drought and heat tolerances. PLoS One 2019; 14:e0219837. [PMID: 31318935 PMCID: PMC6638956 DOI: 10.1371/journal.pone.0219837] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 07/02/2019] [Indexed: 12/11/2022] Open
Abstract
Expansin is a type of cell wall elongation and stress relaxation protein involved in various developmental processes and stress resistances in plant. In this study, we identified 36 potato (Solanum tuberosum L.) genes belonging to the expansin (StEXP) gene family from the genome reference. These genes included 24 α-expansins (StEXPAs), five β-expansins (StEXPBs), one expansin-like A (StEXLA) and six expansin-like B (StEXLBs). The RNA-Seq analysis conducted from a variety of tissue types showed 34 expansins differentially expressed among tissues, some of which only expressed in specific tissues. Most of the StEXPAs and StEXPB2 transcripts were more abundant in young tuber compared with other tissues, suggesting they likely play a role in tuber development. There were 31 genes, especially StEXLB6, showed differential expression under the treatments of ABA, IAA and GA3, as well as under the drought and heat stresses, indicating they were likely involved in potato stress resistance. In addition, the gene co-expression analysis indicated the StEXLBs likely contribute to a wider range of stress resistances compared with other genes. We found the StEXLA and six StEXLBs expressed differently under a range of abiotic stresses (salt, alkaline, heavy metals, drought, heat, and cold stresses), which likely participated in the associated signaling pathways. Comparing with the control group, potato growing under the drought or heat stresses exhibited up-regulation of the all six StEXLB genes in leaves, whereas, the StEXLB3, StEXLB4, StEXLB5 and StEXLB6 showed relatively higher expression levels in roots. This suggested these genes likely played a role in the drought and heat tolerance. Overall, this study has shown the potential role of the StEXP genes in potato growth and stress tolerance, and provided fundamental resources for the future studies in potato breeding.
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Affiliation(s)
- Yongkun Chen
- School of Life Science, Yunnan Normal University, Kunming, China
| | - Bo Zhang
- Joint Academy of Potato Science, Yunnan Normal University, Kunming, China
| | - Canhui Li
- Joint Academy of Potato Science, Yunnan Normal University, Kunming, China
| | - Chunxia Lei
- School of Life Science, Yunnan Normal University, Kunming, China
| | - Chunyan Kong
- School of Life Science, Yunnan Normal University, Kunming, China
| | - Yu Yang
- School of Life Science, Yunnan Normal University, Kunming, China
| | - Ming Gong
- School of Life Science, Yunnan Normal University, Kunming, China
- * E-mail:
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Genome-wide identification and expression analysis of expansin gene family in common wheat (Triticum aestivum L.). BMC Genomics 2019; 20:101. [PMID: 30709338 PMCID: PMC6359794 DOI: 10.1186/s12864-019-5455-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/16/2019] [Indexed: 12/13/2022] Open
Abstract
Background Expansin loosens plant cell walls and involves in cell enlargement and various abiotic stresses. Plant expansin superfamily contains four subfamilies: α-expansin (EXPA), β-expansin (EXPB), expansin-like A (EXLA), and expansin-like B (EXLB). In this work, we performed a comprehensive study on the molecular characterization, phylogenetic relationship and expression profiling of common wheat (Triticum aestivum) expansin gene family using the recently released wheat genome database (IWGSC RefSeq v1.1 with a coverage rate of 94%). Results Genome-wide analysis identified 241 expansin genes in the wheat genome, which were grouped into three subfamilies (EXPA, EXPB and EXLA) by phylogenetic tree. Molecular structure analysis showed that wheat expansin gene family showed high evolutionary conservation although some differences were present in different subfamilies. Some key amino acid sites that contribute to functional divergence, positive selection, and coevolution were detected. Evolutionary analysis revealed that wheat expansin gene superfamily underwent strong positive selection. The transcriptome map and qRT-PCR analysis found that wheat expansin genes had tissue/organ expression specificity and preference, and generally highly expressed in the roots. The expression levels of some expansin genes were significantly induced by NaCl and polyethylene glycol stresses, which was consistent with the differential distribution of the cis-elements in the promoter region. Conclusions Wheat expansin gene family showed high evolutionary conservation and wide range of functional divergence. Different selection constraints may influence the evolution of the three expansin subfamilies. The different expression patterns demonstrated that expansin genes could play important roles in plant growth and abiotic stress responses. This study provides new insights into the structures, evolution and functions of wheat expansin gene family. Electronic supplementary material The online version of this article (10.1186/s12864-019-5455-1) contains supplementary material, which is available to authorized users.
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Abstract
Farmland cadmium (Cd) contamination has adverse impacts on both wheat grain yield and people’s well-being through food consumption. Safe farming using low-Cd cultivars has been proposed as a promising approach to address the farmland Cd pollution problem. To date, several dozen low-Cd wheat cultivars have been screened worldwide based on a Cd inhibition test, representing candidates for wheat Cd minimization. Unfortunately, the breeding of low-Cd wheat cultivars with desired traits or enhanced Cd exclusion has not been extensively explored. Moreover, the wheat Cd inhibition test for variety screening and conventional breeding is expensive and time-consuming. As an alternative, low-Cd wheat cultivars that were developed with molecular genetics and breeding approaches can be promising, typically by the association of marker-assisted selection (MAS) with conventional breeding practices. In this review, we provide a synthetics view of the background and knowledge basis for the breeding of low-Cd wheat cultivars.
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