1
|
Zeng W, Wang X, Li M. PINOID-centered genetic interactions mediate auxin action in cotyledon formation. PLANT DIRECT 2024; 8:e587. [PMID: 38766507 PMCID: PMC11099747 DOI: 10.1002/pld3.587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 04/06/2024] [Accepted: 04/15/2024] [Indexed: 05/22/2024]
Abstract
Auxin plays a key role in plant growth and development through auxin local synthesis, polar transport, and auxin signaling. Many previous reports on Arabidopsis have found that various types of auxin-related genes are involved in the development of the cotyledon, including the number, symmetry, and morphology of the cotyledon. However, the molecular mechanism by which auxin is involved in cotyledon formation remains to be elucidated. PID, which encodes a serine/threonine kinase localized to the plasma membrane, has been found to phosphorylate the PIN1 protein and regulate its polar distribution in the cell. The loss of function of pid resulted in an abnormal number of cotyledons and defects in inflorescence. It was interesting that the pid mutant interacted synergistically with various types of mutant to generate the severe developmental defect without cotyledon. PID and these genes were indicated to be strongly correlated with cotyledon formation. In this review, PID-centered genetic interactions, related gene functions, and corresponding possible pathways are discussed, providing a perspective that PID and its co-regulators control cotyledon formation through multiple pathways.
Collapse
Affiliation(s)
- Wei Zeng
- College of Life ScienceXinyang Normal UniversityXinyangChina
| | - Xiutao Wang
- College of Life ScienceXinyang Normal UniversityXinyangChina
| | - Mengyuan Li
- College of Life ScienceXinyang Normal UniversityXinyangChina
| |
Collapse
|
2
|
Ying W, Wang Y, Wei H, Luo Y, Ma Q, Zhu H, Janssens H, Vukašinović N, Kvasnica M, Winne JM, Gao Y, Tan S, Friml J, Liu X, Russinova E, Sun L. Structure and function of the Arabidopsis ABC transporter ABCB19 in brassinosteroid export. Science 2024; 383:eadj4591. [PMID: 38513023 DOI: 10.1126/science.adj4591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 02/02/2024] [Indexed: 03/23/2024]
Abstract
Brassinosteroids are steroidal phytohormones that regulate plant development and physiology, including adaptation to environmental stresses. Brassinosteroids are synthesized in the cell interior but bind receptors at the cell surface, necessitating a yet to be identified export mechanism. Here, we show that a member of the ATP-binding cassette (ABC) transporter superfamily, ABCB19, functions as a brassinosteroid exporter. We present its structure in both the substrate-unbound and the brassinosteroid-bound states. Bioactive brassinosteroids are potent activators of ABCB19 ATP hydrolysis activity, and transport assays showed that ABCB19 transports brassinosteroids. In Arabidopsis thaliana, ABCB19 and its close homolog, ABCB1, positively regulate brassinosteroid responses. Our results uncover an elusive export mechanism for bioactive brassinosteroids that is tightly coordinated with brassinosteroid signaling.
Collapse
Affiliation(s)
- Wei Ying
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yaowei Wang
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Hong Wei
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Yongming Luo
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Qian Ma
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Heyuan Zhu
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Hilde Janssens
- Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium
| | - Nemanja Vukašinović
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Miroslav Kvasnica
- Laboratory of Growth Regulators, Institute of Experimental Botany, The Czech Academy of Sciences and Palacký University, 77900 Olomouc, Czech Republic
| | - Johan M Winne
- Department of Organic and Macromolecular Chemistry, Ghent University, 9000 Ghent, Belgium
| | - Yongxiang Gao
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Shutang Tan
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Jiří Friml
- Institute of Science and Technology Austria (ISTA), 3400 Klosterneuburg, Austria
| | - Xin Liu
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| | - Eugenia Russinova
- Department of Plant Biotechnology and Bioinformatics, Ghent University, 9052 Ghent, Belgium
- Center for Plant Systems Biology, VIB, 9052 Ghent, Belgium
| | - Linfeng Sun
- Department of Neurology of The First Affiliated Hospital of USTC, MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics, Hefei National Research Center for Physical Sciences at the Microscale, Biomedical Sciences and Health Laboratory of Anhui Province, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230027, China
| |
Collapse
|
3
|
Yang Z, Lin M, Yang X, Wu D, Chen K. Comprehensive analysis of transcriptome and metabolome provides insights into the stress response mechanisms of apple fruit to postharvest impact damage. FOOD CHEMISTRY. MOLECULAR SCIENCES 2023; 7:100176. [PMID: 37457816 PMCID: PMC10344661 DOI: 10.1016/j.fochms.2023.100176] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 06/06/2023] [Accepted: 07/01/2023] [Indexed: 07/18/2023]
Abstract
An integrated analysis of the transcriptome and metabolome was conducted to investigate the underlying mechanisms of apple fruit response to impact damage stress. During the post-damage storage, a total of 124 differentially expressed genes (DEGs) were identified, which were mainly annotated in 13 pathways, including phenylpropanoid biosynthesis. Besides, 175 differentially expressed metabolites (DEMs), including 142 up-regulated and 33 down-regulated metabolites, exhibited significant alteration after impact damage. The DEGs and DEMs were simultaneously annotated in 7 metabolic pathways, including flavonoid biosynthesis. Key genes in the volatile esters and flavonoid biosynthesis pathways were revealed, which may play a crucial role in the coping mechanisms of apple fruit under impact damage stress. Moreover, 13 ABC transporters were significantly upregulated, indicating that ABC transporters may contribute to the transportation of secondary metabolites associated with response to impact damage stress. The results may elucidate the comprehension of metabolic networks and molecular mechanisms in apple fruits that have undergone impact damage.
Collapse
Affiliation(s)
- Zhichao Yang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, PR China
| | - Menghua Lin
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, PR China
| | - Xiangzheng Yang
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, PR China
- Jinan Fruit Research Institute, All China Federation of Supply and Marketing Cooperatives, Jinan 250014, PR China
| | - Di Wu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, PR China
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, PR China
- Zhejiang University Zhongyuan Institute, Zhengzhou 450000, PR China
| | - Kunsong Chen
- College of Agriculture & Biotechnology/Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, PR China
| |
Collapse
|
4
|
Laber L, Eichberg C, Zimmerbeutel A, Düring RA, Donath TW. Effects of macrocyclic lactone anthelmintics on seed germination of temperate grassland species. PLANT BIOLOGY (STUTTGART, GERMANY) 2023; 25:1046-1057. [PMID: 37703534 DOI: 10.1111/plb.13577] [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: 03/17/2023] [Accepted: 08/16/2023] [Indexed: 09/15/2023]
Abstract
Macrocyclic lactone anthelmintics are widely used to control invertebrate pests in livestock, such as sheep. While anthelmintic effects on non-target animals, such as dung-dwelling insects, are well studied, effects on seed germination are largely unknown. Seeds can come into contact with anthelmintics either during passage through the gastro-intestinal tract of grazing animals or when anthelmintics are excreted with their dung into the environment, which may result in changed germination patterns. We used four commonly applied macrocyclic lactones to assess their effects on germination: moxidectin, ivermectin, abamectin and doramectin as pure substances; moxidectin and ivermectin also in formulated form. We tested these pharmaceuticals on 17 different temperate grassland species from five plant families. Seeds were exposed to three concentrations of macrocyclic lactones (0.1, 1.0 and 10.0 mg·l-1 ) under controlled conditions, and germination was assessed over a 6-week period. From these data, we calculated germination percentage, mean germination time and germination synchrony. Most of the tested species were significantly affected in germination percentage and/or mean germination time by at least one of the tested pharmaceuticals, with formulated moxidectin having the largest impact. In general, the effects found were species- and pharmaceutical-specific. While formulated substances generally reduced germination percentage and increased mean germination time, pure substances increased germination percentage. Synchrony showed less clear patterns in all pharmaceuticals. Although effect size and sign varied between species, our study shows that non-target effects of macrocyclic lactones commonly occur in terrestrial plants. This may impede successful seed exchange between habitats via sheep, and even translate into profound changes to grazed ecosystems.
Collapse
Affiliation(s)
- L Laber
- Department of Landscape Ecology, Institute for Natural Resource Conservation, Kiel University, Kiel, Germany
| | - C Eichberg
- Geobotany, Spatial and Environmental Sciences, Trier University, Trier, Germany
| | - A Zimmerbeutel
- Department of Landscape Ecology, Institute for Natural Resource Conservation, Kiel University, Kiel, Germany
| | - R-A Düring
- Institute of Soil Science and Soil Conservation, Justus Liebig University, Gießen, Germany
| | - T W Donath
- Department of Landscape Ecology, Institute for Natural Resource Conservation, Kiel University, Kiel, Germany
| |
Collapse
|
5
|
Zhang X, Zhao Y, Zheng W, Nan B, Fu J, Qiao Y, Zufall RA, Gao F, Yan Y. Genome-wide identification of ATP-binding cassette transporter B subfamily, focusing on its structure, evolution and rearrangement in ciliates. Open Biol 2023; 13:230111. [PMID: 37788709 PMCID: PMC10547551 DOI: 10.1098/rsob.230111] [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: 04/23/2023] [Accepted: 09/04/2023] [Indexed: 10/05/2023] Open
Abstract
ATP-binding cassette subfamily B (ABCB) has been implicated in various essential functions such as multidrug resistance, auxin transport and heavy metal tolerance in animals and plants. However, the functions, the genomic distribution and the evolutionary history have not been characterized systematically in lower eukaryotes. As a lineage of highly specialized unicellular eukaryotes, ciliates have extremely diverse genomic features including nuclear dimorphism. To further understand the genomic structure and evolutionary history of this gene family, we investigated the ABCB gene subfamily in 11 ciliates. The results demonstrate that there is evidence of substantial gene duplication, which has occurred by different mechanisms in different species. These gene duplicates show consistent purifying selection, suggesting functional constraint, in all but one species, where positive selection may be acting to generate novel function. We also compare the gene structures in the micronuclear and macronuclear genomes and find no gene scrambling during genome rearrangement, despite the abundance of such scrambling in two of our focal species. These results lay the foundation for future analyses of the function of these genes and the mechanisms responsible for their evolution across diverse eukaryotic lineages.
Collapse
Affiliation(s)
- Xue Zhang
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, Shandong 266003, People's Republic of China
- Key Laboratory of Evolution & Marine Biodiversity (OUC), Ministry of Education, Qingdao 266003, People's Republic of China
| | - Yan Zhao
- College of Life Sciences, Capital Normal University, Beijing 100048, People's Republic of China
| | - Weibo Zheng
- School of Life Sciences, Ludong University, Yantai, Shandong 264025, People's Republic of China
| | - Bei Nan
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, Shandong 266003, People's Republic of China
- Key Laboratory of Evolution & Marine Biodiversity (OUC), Ministry of Education, Qingdao 266003, People's Republic of China
| | - Jinyu Fu
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, Shandong 266003, People's Republic of China
- Key Laboratory of Evolution & Marine Biodiversity (OUC), Ministry of Education, Qingdao 266003, People's Republic of China
| | - Yu Qiao
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, Shandong 266003, People's Republic of China
- Key Laboratory of Evolution & Marine Biodiversity (OUC), Ministry of Education, Qingdao 266003, People's Republic of China
| | - Rebecca A. Zufall
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA
| | - Feng Gao
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, Shandong 266003, People's Republic of China
- Key Laboratory of Evolution & Marine Biodiversity (OUC), Ministry of Education, Qingdao 266003, People's Republic of China
- Laboratory for Marine Biology and Biotechnology, Laoshan Laboratory, Qingdao 266237, People's Republic of China
| | - Ying Yan
- Institute of Evolution & Marine Biodiversity, Ocean University of China, Qingdao, Shandong 266003, People's Republic of China
- Key Laboratory of Evolution & Marine Biodiversity (OUC), Ministry of Education, Qingdao 266003, People's Republic of China
| |
Collapse
|
6
|
Wu J, Lv S, Zhao L, Gao T, Yu C, Hu J, Ma F. Advances in the study of the function and mechanism of the action of flavonoids in plants under environmental stresses. PLANTA 2023; 257:108. [PMID: 37133783 DOI: 10.1007/s00425-023-04136-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 04/11/2023] [Indexed: 05/04/2023]
Abstract
MAIN CONCLUSION This review summarizes the anti-stress effects of flavonoids in plants and highlights its role in the regulation of polar auxin transport and free radical scavenging mechanism. As secondary metabolites widely present in plants, flavonoids play a vital function in plant growth, but also in resistance to stresses. This review introduces the classification, structure and synthetic pathways of flavonoids. The effects of flavonoids in plant stress resistance were enumerated, and the mechanism of flavonoids in plant stress resistance was discussed in detail. It is clarified that plants under stress accumulate flavonoids by regulating the expression of flavonoid synthase genes. It was also determined that the synthesized flavonoids are transported in plants through three pathways: membrane transport proteins, vesicles, and bound to glutathione S-transferase (GST). At the same time, the paper explores that flavonoids regulate polar auxin transport (PAT) by acting on the auxin export carrier PIN-FORMED (PIN) in the form of ATP-binding cassette subfamily B/P-glycoprotein (ABCB/PGP) transporter, which can help plants to respond in a more dominant form to stress. We have demonstrated that the number and location of hydroxyl groups in the structure of flavonoids can determine their free radical scavenging ability and also elucidated the mechanism by which flavonoids exert free radical removal in cells. We also identified flavonoids as signaling molecules to promote rhizobial nodulation and colonization of arbuscular mycorrhizal fungi (AMF) to enhance plant-microbial symbiosis in defense to stresses. Given all this knowledge, we can foresee that the in-depth study of flavonoids will be an essential way to reveal plant tolerance and enhance plant stress resistance.
Collapse
Affiliation(s)
- Jieting Wu
- School of Environmental Science, Liaoning University, Shenyang, 110036, China.
| | - Sidi Lv
- School of Environmental Science, Liaoning University, Shenyang, 110036, China
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| | - Tian Gao
- School of Environmental Science, Liaoning University, Shenyang, 110036, China
| | - Chang Yu
- Kerchin District Branch Office, Tongliao City Ecological Environment Bureau, Tongliao, 028006, China
| | - Jianing Hu
- Dalian Neusoft University of Information, Dalian, 116032, China
| | - Fang Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
| |
Collapse
|
7
|
Chen J, Hu Y, Hao P, Tsering T, Xia J, Zhang Y, Roth O, Njo MF, Sterck L, Hu Y, Zhao Y, Geelen D, Geisler M, Shani E, Beeckman T, Vanneste S. ABCB-mediated shootward auxin transport feeds into the root clock. EMBO Rep 2023; 24:e56271. [PMID: 36718777 PMCID: PMC10074126 DOI: 10.15252/embr.202256271] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 11/29/2022] [Accepted: 01/10/2023] [Indexed: 02/01/2023] Open
Abstract
Although strongly influenced by environmental conditions, lateral root (LR) positioning along the primary root appears to follow obediently an internal spacing mechanism dictated by auxin oscillations that prepattern the primary root, referred to as the root clock. Surprisingly, none of the hitherto characterized PIN- and ABCB-type auxin transporters seem to be involved in this LR prepatterning mechanism. Here, we characterize ABCB15, 16, 17, 18, and 22 (ABCB15-22) as novel auxin-transporting ABCBs. Knock-down and genome editing of this genetically linked group of ABCBs caused strongly reduced LR densities. These phenotypes were correlated with reduced amplitude, but not reduced frequency of the root clock oscillation. High-resolution auxin transport assays and tissue-specific silencing revealed contributions of ABCB15-22 to shootward auxin transport in the lateral root cap (LRC) and epidermis, thereby explaining the reduced auxin oscillation. Jointly, these data support a model in which LRC-derived auxin contributes to the root clock amplitude.
Collapse
Affiliation(s)
- Jian Chen
- Department of Plant Biotechnology and BioinformaticsGhent UniversityGhentBelgium
- Center for Plant Systems Biology, VIBGhentBelgium
| | - Yangjie Hu
- School of Plant Sciences and Food SecurityTel‐Aviv UniversityTel‐AvivIsrael
| | - Pengchao Hao
- Department of BiologyUniversity of FribourgFribourgSwitzerland
| | - Tashi Tsering
- Department of BiologyUniversity of FribourgFribourgSwitzerland
| | - Jian Xia
- Department of BiologyUniversity of FribourgFribourgSwitzerland
| | - Yuqin Zhang
- School of Plant Sciences and Food SecurityTel‐Aviv UniversityTel‐AvivIsrael
| | - Ohad Roth
- School of Plant Sciences and Food SecurityTel‐Aviv UniversityTel‐AvivIsrael
| | - Maria F Njo
- Department of Plant Biotechnology and BioinformaticsGhent UniversityGhentBelgium
- Center for Plant Systems Biology, VIBGhentBelgium
| | - Lieven Sterck
- Department of Plant Biotechnology and BioinformaticsGhent UniversityGhentBelgium
- Center for Plant Systems Biology, VIBGhentBelgium
| | - Yun Hu
- Section of Cell and Developmental BiologyUniversity of California San DiegoLa JollaCAUSA
| | - Yunde Zhao
- Section of Cell and Developmental BiologyUniversity of California San DiegoLa JollaCAUSA
| | - Danny Geelen
- Department of Plants and CropsGhent UniversityGhentBelgium
| | - Markus Geisler
- Department of BiologyUniversity of FribourgFribourgSwitzerland
| | - Eilon Shani
- School of Plant Sciences and Food SecurityTel‐Aviv UniversityTel‐AvivIsrael
| | - Tom Beeckman
- Department of Plant Biotechnology and BioinformaticsGhent UniversityGhentBelgium
- Center for Plant Systems Biology, VIBGhentBelgium
| | - Steffen Vanneste
- Department of Plant Biotechnology and BioinformaticsGhent UniversityGhentBelgium
- Center for Plant Systems Biology, VIBGhentBelgium
- Department of Plants and CropsGhent UniversityGhentBelgium
- Lab of Plant Growth AnalysisGhent University Global CampusIncheonRepublic of Korea
| |
Collapse
|
8
|
Jourquin J, Fernandez AI, Wang Q, Xu K, Chen J, Šimura J, Ljung K, Vanneste S, Beeckman T. GOLVEN peptides regulate lateral root spacing as part of a negative feedback loop on the establishment of auxin maxima. JOURNAL OF EXPERIMENTAL BOTANY 2023:erad123. [PMID: 37004244 DOI: 10.1093/jxb/erad123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Indexed: 06/19/2023]
Abstract
Lateral root initiation requires the accumulation of auxin in lateral root founder cells, yielding a local auxin maximum. The positioning of auxin maxima along the primary root determines the density and spacing of lateral roots. The GOLVEN6 (GLV6) and GLV10 signaling peptides and their receptors have been established as regulators of lateral root spacing via their inhibitory effect on lateral root initiation in Arabidopsis. However, it remained unclear how these GLV peptides interfere with auxin signaling or homeostasis. Here, we show that GLV6/10 signaling regulates the expression of a subset of auxin response genes, downstream of the canonical auxin signaling pathway, while simultaneously inhibiting the establishment of auxin maxima within xylem-pole pericycle cells that neighbor lateral root initiation sites. We present genetic evidence that this inhibitory effect relies on the activity of the PIN3 and PIN7 auxin export proteins. Furthermore, GLV6/10 peptide signaling was found to enhance PIN7 abundance in the plasma membranes of xylem-pole pericycle cells, which likely stimulates auxin efflux from these cells. Based on these findings, we propose a model in which the GLV6/10 signaling pathway serves as a negative feedback mechanism that contributes to the robust patterning of auxin maxima along the primary root.
Collapse
Affiliation(s)
- Joris Jourquin
- Department of Plant Biotechnology and Bioinformatics, Faculty of Sciences, Ghent University, Ghent 9052, Belgium
- Center for Plant Systems Biology, VIB-UGent, Ghent 9052, Belgium
| | - Ana Ibis Fernandez
- Department of Plant Biotechnology and Bioinformatics, Faculty of Sciences, Ghent University, Ghent 9052, Belgium
- Center for Plant Systems Biology, VIB-UGent, Ghent 9052, Belgium
| | - Qing Wang
- Department of Plant Biotechnology and Bioinformatics, Faculty of Sciences, Ghent University, Ghent 9052, Belgium
- Center for Plant Systems Biology, VIB-UGent, Ghent 9052, Belgium
| | - Ke Xu
- Department of Plant Biotechnology and Bioinformatics, Faculty of Sciences, Ghent University, Ghent 9052, Belgium
- Center for Plant Systems Biology, VIB-UGent, Ghent 9052, Belgium
| | - Jian Chen
- Department of Plant Biotechnology and Bioinformatics, Faculty of Sciences, Ghent University, Ghent 9052, Belgium
- Center for Plant Systems Biology, VIB-UGent, Ghent 9052, Belgium
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium
| | - Jan Šimura
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden
| | - Karin Ljung
- Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Swedish University of Agricultural Sciences, 90183 Umeå, Sweden
| | - Steffen Vanneste
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Faculty of Sciences, Ghent University, Ghent 9052, Belgium
- Center for Plant Systems Biology, VIB-UGent, Ghent 9052, Belgium
| |
Collapse
|
9
|
Li L, Chen X. Auxin regulation on crop: from mechanisms to opportunities in soybean breeding. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2023; 43:16. [PMID: 37313296 PMCID: PMC10248601 DOI: 10.1007/s11032-023-01361-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 02/10/2023] [Indexed: 06/15/2023]
Abstract
Breeding crop varieties with high yield and ideal plant architecture is a desirable goal of agricultural science. The success of "Green Revolution" in cereal crops provides opportunities to incorporate phytohormones in crop breeding. Auxin is a critical phytohormone to determine nearly all the aspects of plant development. Despite the current knowledge regarding auxin biosynthesis, auxin transport and auxin signaling have been well characterized in model Arabidopsis (Arabidopsis thaliana) plants, how auxin regulates crop architecture is far from being understood, and the introduction of auxin biology in crop breeding stays in the theoretical stage. Here, we give an overview on molecular mechanisms of auxin biology in Arabidopsis, and mainly summarize auxin contributions for crop plant development. Furthermore, we propose potential opportunities to integrate auxin biology in soybean (Glycine max) breeding.
Collapse
Affiliation(s)
- Linfang Li
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, 350002 Fujian China
- Haixia Institute of Science and Technology, Horticultural Plant Biology and Metabolomics Center, Fujian Agriculture and Forestry University, Fuzhou, 350002 Fujian China
| | - Xu Chen
- Haixia Institute of Science and Technology, Horticultural Plant Biology and Metabolomics Center, Fujian Agriculture and Forestry University, Fuzhou, 350002 Fujian China
| |
Collapse
|
10
|
Schmidt L, Nagel KA, Galinski A, Sannemann W, Pillen K, Maurer A. Unraveling Genomic Regions Controlling Root Traits as a Function of Nitrogen Availability in the MAGIC Wheat Population WM-800. PLANTS (BASEL, SWITZERLAND) 2022; 11:3520. [PMID: 36559632 PMCID: PMC9785272 DOI: 10.3390/plants11243520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/29/2022] [Accepted: 12/05/2022] [Indexed: 06/17/2023]
Abstract
An ever-growing world population demands to be fed in the future and environmental protection and climate change need to be taken into account. An important factor here is nitrogen uptake efficiency (NUpE), which is influenced by the root system (the interface between plant and soil). To understand the natural variation of root system architecture (RSA) as a function of nitrogen (N) availability, a subset of the multiparent advanced generation intercross (MAGIC) winter wheat population WM-800 was phenotyped under two contrasting N treatments in a high-throughput phenotyping system at the seedling stage. Fourteen root and shoot traits were measured. Subsequently, these traits were genetically analyzed using 13,060 polymorphic haplotypes and SNPs in a genome-wide association study (GWAS). In total, 64 quantitative trait loci (QTL) were detected; 60 of them were N treatment specific. Candidate genes for the detected QTL included NRT1.1 and genes involved in stress signaling under N-, whereas candidate genes under N+ were more associated with general growth, such as mei2 and TaWOX11b. This finding may indicate (i) a disparity of the genetic control of root development under low and high N supply and, furthermore, (ii) the need for an N specific selection of genes and genotypes in breeding new wheat cultivars with improved NUpE.
Collapse
Affiliation(s)
- Laura Schmidt
- Chair of Plant Breeding, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120 Halle, Germany
| | - Kerstin A. Nagel
- IBG-2: Plant Sciences, Institute of Bio- and Geosciences, Research Institute Jülich GmbH, 52425 Jülich, Germany
| | - Anna Galinski
- IBG-2: Plant Sciences, Institute of Bio- and Geosciences, Research Institute Jülich GmbH, 52425 Jülich, Germany
| | - Wiebke Sannemann
- Chair of Plant Breeding, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120 Halle, Germany
| | - Klaus Pillen
- Chair of Plant Breeding, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120 Halle, Germany
| | - Andreas Maurer
- Chair of Plant Breeding, Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, Betty-Heimann-Str. 3, 06120 Halle, Germany
| |
Collapse
|
11
|
Duan H, Li J, Sun Y, Xiong X, Sun L, Li W, Gao J, Li N, Zhang J, Cui J, Fu Z, Zhang X, Tang J. Candidate loci for leaf angle in maize revealed by a combination of genome-wide association study and meta-analysis. Front Genet 2022; 13:1004211. [PMID: 36437932 PMCID: PMC9691904 DOI: 10.3389/fgene.2022.1004211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/28/2022] [Indexed: 11/13/2022] Open
Abstract
Leaf angle (LA) is a key component of maize plant architecture that can simultaneously govern planting density and improve final yield. However, the genetic mechanisms underlying LA have not been fully addressed. To broaden our understanding of its genetic basis, we scored three LA-related traits on upper, middle, and low leaves of 492 maize inbred lines in five environments. Phenotypic data revealed that the three LA-related traits were normally distributed, and significant variation was observed among environments and genotypes. A genome-wide association study (GWAS) was then performed to dissect the genetic factors that control natural variation in maize LA. In total, 85 significant SNPs (involving 32 non-redundant QTLs) were detected (p ≤ 2.04 × 10–6), and individual QTL explained 4.80%–24.09% of the phenotypic variation. Five co-located QTL were detected in at least two environments, and two QTLs were co-located with multiple LA-related traits. Forty-seven meta-QTLs were identified based on meta-analysis combing 294 LA-related QTLs extracted from 18 previously published studies, 816 genes were identified within these meta-QTLs, and seven co-located QTLs were jointly identified by both GWAS and meta-analysis. ZmULA1 was located in one of the co-located QTLs, qLA7, and its haplotypes, hap1 and hap2, differed significantly in LA-related traits. Interestingly, the temperate materials with hap2 had smallest LA. Finally, we also performed haplotype analysis using the reported genes that regulate LA, and identified a lot of maize germplasms that aggregated favorable haplotypes. These results will be helpful for elucidating the genetic basis of LA and breeding new maize varieties with ideal plant architecture.
Collapse
Affiliation(s)
- Haiyang Duan
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Jianxin Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Yan Sun
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Xuehang Xiong
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Li Sun
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Wenlong Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Jionghao Gao
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Na Li
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Junli Zhang
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Jiangkuan Cui
- College of Plant Protection, Henan Agricultural University, Zhengzhou, China
| | - Zhiyuan Fu
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
| | - Xuehai Zhang
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
- *Correspondence: Xuehai Zhang, ; Jihua Tang,
| | - Jihua Tang
- National Key Laboratory of Wheat and Maize Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou, China
- The Shennong Laboratory, Zhengzhou, China
- *Correspondence: Xuehai Zhang, ; Jihua Tang,
| |
Collapse
|
12
|
Liu J, Ghelli R, Cardarelli M, Geisler M. Arabidopsis TWISTED DWARF1 regulates stamen elongation by differential activation of ABCB1,19-mediated auxin transport. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:4818-4831. [PMID: 35512423 DOI: 10.1093/jxb/erac185] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 05/04/2022] [Indexed: 06/14/2023]
Abstract
Despite clear evidence that a local accumulation of auxin is likewise critical for male fertility, much less is known about the components that regulate auxin-controlled stamen development. In this study, we analyzed physiological and morphological parameters in mutants of key players of ABCB-mediated auxin transport, and spatially and temporally dissected their expression on the protein level as well as auxin fluxes in the Arabidopsis stamens. Our analyses revealed that the FKBP42, TWISTED DWARF1 (TWD1), promotes stamen elongation and, to a lesser extent, anther dehiscence, as well as pollen maturation, and thus is required for seed development. Most of the described developmental defects in twd1 are shared with the abcb1 abcb19 mutant, which can be attributed to the fact that TWD1-as a described ABCB chaperone-is a positive regulator of ABCB1- and ABCB19-mediated auxin transport. However, reduced stamen number was dependent on TWD1 but not on investigated ABCBs, suggesting additional players downstream of TWD1. We predict an overall housekeeping function for ABCB1 during earlier stages, while ABCB19 seems to be responsible for the key event of rapid elongation at later stages of stamen development. Our data indicate that TWD1 controls stamen development by differential activation of ABCB1,19-mediated auxin transport in the stamen.
Collapse
Affiliation(s)
- Jie Liu
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| | - Roberta Ghelli
- IBPM-CNR, Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, P. le A. Moro 5, 00185 Roma, Italy
| | - Maura Cardarelli
- IBPM-CNR, Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, P. le A. Moro 5, 00185 Roma, Italy
| | - Markus Geisler
- University of Fribourg, Department of Biology, CH-1700 Fribourg, Switzerland
| |
Collapse
|
13
|
Smailagić D, Banjac N, Ninković S, Savić J, Ćosić T, Pěnčík A, Ćalić D, Bogdanović M, Trajković M, Stanišić M. New Insights Into the Activity of Apple Dihydrochalcone Phloretin: Disturbance of Auxin Homeostasis as Physiological Basis of Phloretin Phytotoxic Action. FRONTIERS IN PLANT SCIENCE 2022; 13:875528. [PMID: 35873993 PMCID: PMC9302884 DOI: 10.3389/fpls.2022.875528] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 06/16/2022] [Indexed: 06/15/2023]
Abstract
Apple species are the unique naturally rich source of dihydrochalcones, phenolic compounds with an elusive role in planta, but suggested auto-allelochemical features related to "apple replant disease" (ARD). Our aim was to elucidate the physiological basis of the phytotoxic action of dihydrochalcone phloretin in the model plant Arabidopsis and to promote phloretin as a new prospective eco-friendly phytotoxic compound. Phloretin treatment induced a significant dose-dependent growth retardation and severe morphological abnormalities and agravitropic behavior in Arabidopsis seedlings. Histological examination revealed a reduced starch content in the columella cells and a serious disturbance in root architecture, which resulted in the reduction in length of meristematic and elongation zones. Significantly disturbed auxin metabolome profile in roots with a particularly increased content of IAA accumulated in the lateral parts of the root apex, accompanied by changes in the expression of auxin biosynthetic and transport genes, especially PIN1, PIN3, PIN7, and ABCB1, indicates the role of auxin in physiological basis of phloretin-induced growth retardation. The results reveal a disturbance of auxin homeostasis as the main mechanism of phytotoxic action of phloretin. This mechanism makes phloretin a prospective candidate for an eco-friendly bioherbicide and paves the way for further research of phloretin role in ARD.
Collapse
Affiliation(s)
- Dijana Smailagić
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nevena Banjac
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Slavica Ninković
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jelena Savić
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tatjana Ćosić
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Aleš Pěnčík
- Laboratory of Growth Regulators, Faculty of Science, Palacký University and Institute of Experimental Botany, The Czech Academy of Sciences, Olomouc, Czechia
| | - Dušica Ćalić
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Milica Bogdanović
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Milena Trajković
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Mariana Stanišić
- Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| |
Collapse
|
14
|
Li H, Matsuda H, Tsuboyama A, Munakata R, Sugiyama A, Yazaki K. Inventory of ATP-binding cassette proteins in Lithospermum erythrorhizon as a model plant producing divergent secondary metabolites. DNA Res 2022; 29:6596041. [PMID: 35640979 PMCID: PMC9195045 DOI: 10.1093/dnares/dsac016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 05/26/2022] [Indexed: 02/07/2023] Open
Abstract
ATP-binding cassette (ABC) proteins are the largest membrane transporter family in plants. In addition to transporting organic substances, these proteins function as ion channels and molecular switches. The development of multiple genes encoding ABC proteins has been associated with their various biological roles. Plants utilize many secondary metabolites to adapt to environmental stresses and to communicate with other organisms, with many ABC proteins thought to be involved in metabolite transport. Lithospermum erythrorhizon is regarded as a model plant for studying secondary metabolism, as cells in culture yielded high concentrations of meroterpenes and phenylpropanoids. Analysis of the genome and transcriptomes of L. erythrorhizon showed expression of genes encoding 118 ABC proteins, similar to other plant species. The number of expressed proteins in the half-size ABCA and full-size ABCB subfamilies was ca. 50% lower in L. erythrorhizon than in Arabidopsis, whereas there was no significant difference in the numbers of other expressed ABC proteins. Because many ABCG proteins are involved in the export of organic substances, members of this subfamily may play important roles in the transport of secondary metabolites that are secreted into apoplasts.
Collapse
Affiliation(s)
- Hao Li
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Hinako Matsuda
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Ai Tsuboyama
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Ryosuke Munakata
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Akifumi Sugiyama
- Research Institute for Sustainable Humanosphere, Kyoto University, Uji 611-0011, Japan
| | - Kazufumi Yazaki
- To whom correspondence should be addressed. Tel. +81 774 38 3617.
| |
Collapse
|
15
|
Mellor NL, Voß U, Ware A, Janes G, Barrack D, Bishopp A, Bennett MJ, Geisler M, Wells DM, Band LR. Systems approaches reveal that ABCB and PIN proteins mediate co-dependent auxin efflux. THE PLANT CELL 2022; 34:2309-2327. [PMID: 35302640 PMCID: PMC9134068 DOI: 10.1093/plcell/koac086] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/10/2022] [Indexed: 05/11/2023]
Abstract
Members of the B family of membrane-bound ATP-binding cassette (ABC) transporters represent key components of the auxin efflux machinery in plants. Over the last two decades, experimental studies have shown that modifying ATP-binding cassette sub-family B (ABCB) expression affects auxin distribution and plant phenotypes. However, precisely how ABCB proteins transport auxin in conjunction with the more widely studied family of PIN-formed (PIN) auxin efflux transporters is unclear, and studies using heterologous systems have produced conflicting results. Here, we integrate ABCB localization data into a multicellular model of auxin transport in the Arabidopsis thaliana root tip to predict how ABCB-mediated auxin transport impacts organ-scale auxin distribution. We use our model to test five potential ABCB-PIN regulatory interactions, simulating the auxin dynamics for each interaction and quantitatively comparing the predictions with experimental images of the DII-VENUS auxin reporter in wild-type and abcb single and double loss-of-function mutants. Only specific ABCB-PIN regulatory interactions result in predictions that recreate the experimentally observed DII-VENUS distributions and long-distance auxin transport. Our results suggest that ABCBs enable auxin efflux independently of PINs; however, PIN-mediated auxin efflux is predominantly through a co-dependent efflux where co-localized with ABCBs.
Collapse
Affiliation(s)
| | | | - Alexander Ware
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - George Janes
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Duncan Barrack
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Anthony Bishopp
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Malcolm J Bennett
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | - Markus Geisler
- Department of Biology, University of Fribourg, Fribourg CH-1700, Switzerland
| | - Darren M Wells
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5RD, UK
| | | |
Collapse
|
16
|
Jenness MK, Tayengwa R, Bate GA, Tapken W, Zhang Y, Pang C, Murphy AS. Loss of Multiple ABCB Auxin Transporters Recapitulates the Major twisted dwarf 1 Phenotypes in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2022; 13:840260. [PMID: 35528937 PMCID: PMC9069160 DOI: 10.3389/fpls.2022.840260] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
FK506-BINDING PROTEIN 42/TWISTED DWARF 1 (FKBP42/TWD1) directly regulates cellular trafficking and activation of multiple ATP-BINDING CASSETTE (ABC) transporters from the ABCB and ABCC subfamilies. abcb1 abcb19 double mutants exhibit remarkable phenotypic overlap with twd1 including severe dwarfism, stamen elongation defects, and compact circinate leaves; however, twd1 mutants exhibit greater loss of polar auxin transport and additional helical twisting of roots, inflorescences, and siliques. As abcc1 abcc2 mutants do not exhibit any visible phenotypes and TWD1 does not interact with PIN or AUX1/LAX auxin transporters, loss of function of other ABCB auxin transporters is hypothesized to underly the remaining morphological phenotypes. Here, gene expression, mutant analyses, pharmacological inhibitor studies, auxin transport assays, and direct auxin quantitations were used to determine the relative contributions of loss of other reported ABCB auxin transporters (4, 6, 11, 14, 20, and 21) to twd1 phenotypes. From these analyses, the additional reduction in plant height and the twisted inflorescence, root, and silique phenotypes observed in twd1 compared to abcb1 abcb19 result from loss of ABCB6 and ABCB20 function. Additionally, abcb6 abcb20 root twisting exhibited the same sensitivity to the auxin transport inhibitor 1-napthalthalamic acid as twd1 suggesting they are the primary contributors to these auxin-dependent organ twisting phenotypes. The lack of obvious phenotypes in higher order abcb4 and abcb21 mutants suggests that the functional loss of these transporters does not contribute to twd1 root or shoot twisting. Analyses of ABCB11 and ABCB14 function revealed capacity for auxin transport; however, their activities are readily outcompeted by other substrates, suggesting alternate functions in planta, consistent with a spectrum of relative substrate affinities among ABCB transporters. Overall, the results presented here suggest that the ABCB1/19 and ABCB6/20 pairs represent the primary long-distance ABCB auxin transporters in Arabidopsis and account for all reported twd1 morphological phenotypes. Other ABCB transporters appear to participate in highly localized auxin streams or mobilize alternate transport substrates.
Collapse
Affiliation(s)
- Mark K. Jenness
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Reuben Tayengwa
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Gabrielle A. Bate
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Wiebke Tapken
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Yuqin Zhang
- School of Plant Sciences and Food Security, Tel Aviv University, Tel Aviv, Israel
| | - Changxu Pang
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| | - Angus S. Murphy
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, United States
| |
Collapse
|
17
|
New Insights into Evolution of the ABC Transporter Family in Mesostigma viride, a Unicellular Charophyte Algae. Curr Issues Mol Biol 2022; 44:1646-1660. [PMID: 35723370 PMCID: PMC9164057 DOI: 10.3390/cimb44040112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 11/17/2022] Open
Abstract
ATP-binding cassette (ABC) transporters play an important role in driving the exchange of multiple molecules across cell membranes. The plant ABC transporter family is among the largest protein families, and recent progress has advanced our understanding of ABC classification. However, the ancestral form and deep origin of plant ABCs remain elusive. In this study, we identified 59 ABC transporters in Mesostigma viride, a unicellular charophyte algae that represents the earliest diverging lineage of streptophytes, and 1034 ABCs in genomes representing a broad taxonomic sampling from distantly related plant evolutionary lineages, including chlorophytes, charophytes, bryophytes, lycophytes, gymnosperms, basal angiosperms, monocots, and eudicots. We classified the plant ABC transporters by comprehensive phylogenetic analysis of each subfamily. Our analysis revealed the ancestral type of ABC proteins as well as duplication and gene loss during plant evolution, contributing to our understanding of the functional conservation and diversity of this family. In summary, this study provides new insight into the origin and evolution of plant ABC transporters.
Collapse
|
18
|
Schroeder MM, Gomez MY, McLain N, Gachomo EW. Bradyrhizobium japonicum IRAT FA3 Alters Arabidopsis thaliana Root Architecture via Regulation of Auxin Efflux Transporters PIN2, PIN3, PIN7, and ABCB19. MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2022; 35:215-229. [PMID: 34941379 DOI: 10.1094/mpmi-05-21-0118-r] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Beneficial rhizobacteria can stimulate changes in plant root development. Although root system growth is mediated by multiple factors, the regulated distribution of the phytohormone auxin within root tissues plays a principal role. Auxin transport facilitators help to generate the auxin gradients and maxima that determine root structure. Here, we show that the plant-growth-promoting rhizobacterial strain Bradyrhizobium japonicum IRAT FA3 influences specific auxin efflux transporters to alter Arabidopsis thaliana root morphology. Gene expression profiling of host transcripts in control and B. japonicum-inoculated roots of the wild-type A. thaliana accession Col-0 confirmed upregulation of PIN2, PIN3, PIN7, and ABCB19 with B. japonicum and identified genes potentially contributing to a diverse array of auxin-related responses. Cocultivation of the bacterium with loss-of-function auxin efflux transport mutants revealed that B. japonicum requires PIN3, PIN7, and ABCB19 to increase lateral root development and utilizes PIN2 to reduce primary root length. Accelerated lateral root primordia production due to B. japonicum was not observed in single pin3, pin7, or abcb19 mutants, suggesting independent roles for PIN3, PIN7, and ABCB19 during the plant-microbe interaction. Our work demonstrates B. japonicum's influence over host transcriptional reprogramming during plant interaction with this beneficial microbe and the subsequent alterations to root system architecture.[Formula: see text] Copyright © 2022 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
Collapse
Affiliation(s)
- Mercedes M Schroeder
- Department of Microbiology and Plant Pathology, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Melissa Y Gomez
- Department of Microbiology and Plant Pathology, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Nathan McLain
- Department of Microbiology and Plant Pathology, University of California-Riverside, Riverside, CA 92521, U.S.A
| | - Emma W Gachomo
- Department of Microbiology and Plant Pathology, University of California-Riverside, Riverside, CA 92521, U.S.A
| |
Collapse
|
19
|
Hartmann A, Berkowitz O, Whelan J, Narsai R. Cross-species transcriptomic analyses reveals common and opposite responses in Arabidopsis, rice and barley following oxidative stress and hormone treatment. BMC PLANT BIOLOGY 2022; 22:62. [PMID: 35120438 PMCID: PMC8815143 DOI: 10.1186/s12870-021-03406-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 12/14/2021] [Indexed: 05/27/2023]
Abstract
BACKGROUND For translational genomics, a roadmap is needed to know the molecular similarities or differences between species, such as model species and crop species. This knowledge is invaluable for the selection of target genes and pathways to alter downstream in response to the same stimuli. Here, the transcriptomic responses to six treatments including hormones (abscisic acid - ABA and salicylic acid - SA); treatments that cause oxidative stress (3-amino-1,2,4-triazole - 3AT, methyl viologen - MV); inhibit respiration (antimycin A - AA) or induce genetic damage (ultraviolet radiation -UV) were analysed and compared between Arabidopsis (Arabidopsis thaliana), barley (Hordeum vulgare) and rice (Oryza sativa). RESULTS Common and opposite responses were identified between species, with the number of differentially expressed genes (DEGs) varying greatly between treatments and species. At least 70% of DEGs overlapped with at least one other treatment within a species, indicating overlapping response networks. Remarkably, 15 to 34% of orthologous DEGs showed opposite responses between species, indicating diversity in responses, despite orthology. Orthologous DEGs with common responses to multiple treatments across the three species were correlated with experimental data showing the functional importance of these genes in biotic/abiotic stress responses. The mitochondrial dysfunction response was revealed to be highly conserved in all three species in terms of responsive genes and regulation via the mitochondrial dysfunction element. CONCLUSIONS The orthologous DEGs that showed a common response between species indicate conserved transcriptomic responses of these pathways between species. However, many genes, including prominent salt-stress responsive genes, were oppositely responsive in multiple-stresses, highlighting fundamental differences in the responses and regulation of these genes between species. This work provides a resource for translation of knowledge or functions between species.
Collapse
Affiliation(s)
- Andreas Hartmann
- Department of Animal, Plant and Soil Sciences, Australian Research Council Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe Institute for Agriculture and Food (LIAF), La Trobe University, 5 Ring Road Bundoora, Victoria, 3083, Australia
| | - Oliver Berkowitz
- Department of Animal, Plant and Soil Sciences, Australian Research Council Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe Institute for Agriculture and Food (LIAF), La Trobe University, 5 Ring Road Bundoora, Victoria, 3083, Australia
| | - James Whelan
- Department of Animal, Plant and Soil Sciences, Australian Research Council Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe Institute for Agriculture and Food (LIAF), La Trobe University, 5 Ring Road Bundoora, Victoria, 3083, Australia
| | - Reena Narsai
- Department of Animal, Plant and Soil Sciences, Australian Research Council Centre of Excellence in Plant Energy Biology, School of Life Sciences, La Trobe Institute for Agriculture and Food (LIAF), La Trobe University, 5 Ring Road Bundoora, Victoria, 3083, Australia.
| |
Collapse
|
20
|
Abstract
From embryogenesis to fruit formation, almost every aspect of plant development and differentiation is controlled by the cellular accumulation or depletion of auxin from cells and tissues. The respective auxin maxima and minima are generated by cell-to-cell auxin transport via transporter proteins. Differential auxin accumulation as a result of such transport processes dynamically regulates auxin distribution during differentiation. In this review, we introduce all auxin transporter (families) identified to date and discuss the knowledge on prominent family members, namely, the PIN-FORMED exporters, ATP-binding cassette B (ABCB)-type transporters, and AUX1/LAX importers. We then concentrate on the biochemical features of these transporters and their regulation by posttranslational modifications and interactors.
Collapse
Affiliation(s)
- Ulrich Z Hammes
- Plant Systems Biology, School of Life Sciences, Technical University of Munich, 85354 Freising, Germany
| | - Angus S Murphy
- Department of Plant Science and Landscape Architecture
- Agriculture Biotechnology Center, University of Maryland, College Park, Maryland 20742, USA
| | - Claus Schwechheimer
- Plant Systems Biology, School of Life Sciences, Technical University of Munich, 85354 Freising, Germany
| |
Collapse
|
21
|
Zhang Y, Li J, Li C, Chen S, Tang Q, Xiao Y, Zhong L, Chen Y, Chen B. Gene expression programs during callus development in tissue culture of two Eucalyptus species. BMC PLANT BIOLOGY 2022; 22:1. [PMID: 34979920 PMCID: PMC8722213 DOI: 10.1186/s12870-021-03391-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 12/09/2021] [Indexed: 05/09/2023]
Abstract
BACKGROUND Eucalyptus is a highly diverse genus of the Myrtaceae family and widely planted in the world for timber and pulp production. Tissue culture induced callus has become a common tool for Eucalyptus breeding, however, our knowledge about the genes related to the callus maturation and shoot regeneration is still poor. RESULTS We set up an experiment to monitor the callus induction and callus development of two Eucalyptus species - E. camaldulensis (high embryogenic potential) and E. grandis x urophylla (low embryogenic potential). Then, we performed transcriptome sequencing for primary callus, mature callus, shoot regeneration stage callus and senescence callus. We identified 707 upregulated and 694 downregulated genes during the maturation process of the two Eucalyptus species and most of them were involved in the signaling pathways like plant hormone and MAPK. Next, we identified 135 and 142 genes that might play important roles during the callus development of E. camaldulensis and E. grandis x urophylla, respectively. Further, we found 15 DEGs shared by these two Eucalyptus species during the callus development, including Eucgr.D00640 (stem-specific protein TSJT1), Eucgr.B00171 (BTB/POZ and TAZ domain-containing protein 1), Eucgr.C00948 (zinc finger CCCH domain-containing protein 20), Eucgr.K01667 (stomatal closure-related actinbinding protein 3), Eucgr.C00663 (glutaredoxin-C10) and Eucgr.C00419 (UPF0481 protein At3g47200). Interestingly, the expression patterns of these genes displayed "N" shape in the samples. Further, we found 51 genes that were dysregulated during the callus development of E. camaldulensis but without changes in E. grandis x urophylla, such as Eucgr.B02127 (GRF1-interacting factor 1), Eucgr.C00947 (transcription factor MYB36), Eucgr.B02752 (laccase-7), Eucgr.B03985 (transcription factor MYB108), Eucgr.D00536 (GDSL esterase/lipase At5g45920) and Eucgr.B02347 (scarecrow-like protein 34). These 51 genes might be associated with the high propagation ability of Eucalyptus and 22 might be induced after the dedifferentiation. Last, we performed WGCNA to identify the co-expressed genes during the callus development of Eucalyptus and qRT-PCR experiment to validate the gene expression patterns. CONCLUSIONS This is the first time to globally study the gene profiles during the callus development of Eucalyptus. The results will improve our understanding of gene regulation and molecular mechanisms in the callus maturation and shoot regeneration.
Collapse
Affiliation(s)
- Ye Zhang
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Junji Li
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Changrong Li
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Shengkan Chen
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Qinglan Tang
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Yufei Xiao
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Lianxiang Zhong
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Yingying Chen
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| | - Bowen Chen
- Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Guangxi Forestry Research Institute, 23 Yongwu Road, Nanning, 530002 Guangxi China
| |
Collapse
|
22
|
Do THT, Martinoia E, Lee Y, Hwang JU. 2021 update on ATP-binding cassette (ABC) transporters: how they meet the needs of plants. PLANT PHYSIOLOGY 2021; 187:1876-1892. [PMID: 35235666 PMCID: PMC8890498 DOI: 10.1093/plphys/kiab193] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 04/10/2021] [Indexed: 05/02/2023]
Abstract
Recent developments in the field of ABC proteins including newly identified functions and regulatory mechanisms expand the understanding of how they function in the development and physiology of plants.
Collapse
Affiliation(s)
- Thanh Ha Thi Do
- Division of Integrative Bioscience and Biotechnology, POSTECH, Pohang, 37673, South Korea
| | - Enrico Martinoia
- Division of Integrative Bioscience and Biotechnology, POSTECH, Pohang, 37673, South Korea
- Department of Plant and Microbial Biology, University Zurich, Zurich 8008, Switzerland
| | - Youngsook Lee
- Division of Integrative Bioscience and Biotechnology, POSTECH, Pohang, 37673, South Korea
- Department of Life Sciences, POSTECH, Pohang 37673, South Korea
| | - Jae-Ung Hwang
- Division of Integrative Bioscience and Biotechnology, POSTECH, Pohang, 37673, South Korea
- Author for communication:
| |
Collapse
|
23
|
Martinière A, Zelazny E. Membrane nanodomains and transport functions in plant. PLANT PHYSIOLOGY 2021; 187:1839-1855. [PMID: 35235669 PMCID: PMC8644385 DOI: 10.1093/plphys/kiab312] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 06/16/2021] [Indexed: 05/25/2023]
Abstract
Far from a homogeneous environment, biological membranes are highly structured with lipids and proteins segregating in domains of different sizes and dwell times. In addition, membranes are highly dynamics especially in response to environmental stimuli. Understanding the impact of the nanoscale organization of membranes on cellular functions is an outstanding question. Plant channels and transporters are tightly regulated to ensure proper cell nutrition and signaling. Increasing evidence indicates that channel and transporter nano-organization within membranes plays an important role in these regulation mechanisms. Here, we review recent advances in the field of ion, water, but also hormone transport in plants, focusing on protein organization within plasma membrane nanodomains and its cellular and physiological impacts.
Collapse
Affiliation(s)
| | - Enric Zelazny
- BPMP, Univ Montpellier, CNRS, INRAE, Institut Agro, Montpellier, France
| |
Collapse
|
24
|
Deslauriers SD, Spalding EP. Electrophysiological study of Arabidopsis ABCB4 and PIN2 auxin transporters: Evidence of auxin activation and interaction enhancing auxin selectivity. PLANT DIRECT 2021; 5:e361. [PMID: 34816076 PMCID: PMC8595762 DOI: 10.1002/pld3.361] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/21/2021] [Indexed: 05/25/2023]
Abstract
Polar auxin transport through plant tissue strictly requires polarly localized PIN proteins and uniformly distributed ABCB proteins. A functional synergy between the two types of membrane protein where their localizations overlap may create the degree of asymmetric auxin efflux required to produce polar auxin transport. We investigated this possibility by expressing ABCB4 and PIN2 in human embryonic kidney cells and measuring whole-cell ionic currents with the patch-clamp technique and CsCl-based electrolytes. ABCB4 activity was 1.81-fold more selective for Cl- over Cs+ and for PIN2 the value was 2.95. We imposed auxin gradients and determined that ABCB4 and PIN2 were 12-fold more permeable to the auxin anion (IAA-) than Cl-. This measure of the intrinsic selectivity of the transport pathway was 21-fold when ABCB4 and PIN2 were co-expressed. If this increase occurs in plants, it could explain why asymmetric PIN localization is not sufficient to create polar auxin flow. Some form of co-action or synergy between ABCB4 and PIN2 that increases IAA- selectivity at the cell face where both occur may be important. We also found that auxin stimulated ABCB4 activity, which may contribute to a self-reinforcement of auxin transport known as canalization.
Collapse
Affiliation(s)
- Stephen D. Deslauriers
- Department of BotanyUniversity of Wisconsin‐MadisonMadisonWIUSA
- Present address:
Division of Science and MathUniversity of MinnesotaMorrisMNUSA
| | | |
Collapse
|
25
|
Li C, Liu G, Geng X, He C, Quan T, Hayashi KI, De Smet I, Robert HS, Ding Z, Yang ZB. Local regulation of auxin transport in root-apex transition zone mediates aluminium-induced Arabidopsis root-growth inhibition. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 108:55-66. [PMID: 34273207 DOI: 10.1111/tpj.15424] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 07/08/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
Aluminium (Al) stress is a major limiting factor for worldwide crop production in acid soils. In Arabidopsis thaliana, the TAA1-dependent local auxin biosynthesis in the root-apex transition zone (TZ), the major perception site for Al toxicity, is crucial for the Al-induced root-growth inhibition, while the mechanism underlying Al-regulated auxin accumulation in the TZ is not fully understood. In the present study, the role of auxin transport in Al-induced local auxin accumulation in the TZ and root-growth inhibition was investigated. Our results showed that PIN-FORMED (PIN) proteins such as PIN1, PIN3, PIN4 and PIN7 and AUX1/LAX proteins such as AUX1, LAX1 and LAX2 were all ectopically up-regulated in the root-apex TZ in response to Al stress and coordinately regulated local auxin accumulation in the TZ and root-growth inhibition. The ectopic up-regulation of PIN1 in the TZ under Al stress was regulated by both ethylene and auxin, with auxin signalling acting downstream of ethylene. Al-induced PIN1 up-regulation and auxin accumulation in the root-apex TZ was also regulated by the calossin-like protein BIG. Together, our results provide insight into how Al stress induces local auxin accumulation in the TZ and root-growth inhibition through the local regulation of auxin transport.
Collapse
Affiliation(s)
- Cuiling Li
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University (Qingdao), Qingdao, 266237, P.R. China
| | - Guangchao Liu
- School of Life Science, Qingdao Agricultural University, Qingdao, 266109, P.R. China
| | - Xiaoyu Geng
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University (Qingdao), Qingdao, 266237, P.R. China
| | - Chunmei He
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University (Qingdao), Qingdao, 266237, P.R. China
| | - Taiyong Quan
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University (Qingdao), Qingdao, 266237, P.R. China
| | - Ken-Ichiro Hayashi
- Department of Biochemistry, Okayama University of Science, Okayama, 700-0005, Japan
| | - Ive De Smet
- Department of Plant Systems Biology, VIB, Technologiepark 927, B-9052, Ghent, Belgium
- Department of Plant Biotechnology and Genetics, Ghent University, Technologiepark 927, B-9052, Ghent, Belgium
| | - Hélène S Robert
- Mendel Centre for Genomics and Proteomics of Plants Systems, CEITEC MU - Central European Institute of Technology, Masaryk University, Brno, 004205, Czech Republic
| | - Zhaojun Ding
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University (Qingdao), Qingdao, 266237, P.R. China
| | - Zhong-Bao Yang
- The Key Laboratory of Plant Development and Environmental Adaptation Biology, Ministry of Education, School of Life Science, Shandong University (Qingdao), Qingdao, 266237, P.R. China
| |
Collapse
|
26
|
Integrating the Roles for Cytokinin and Auxin in De Novo Shoot Organogenesis: From Hormone Uptake to Signaling Outputs. Int J Mol Sci 2021; 22:ijms22168554. [PMID: 34445260 PMCID: PMC8395325 DOI: 10.3390/ijms22168554] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/01/2021] [Accepted: 08/03/2021] [Indexed: 12/01/2022] Open
Abstract
De novo shoot organogenesis (DNSO) is a procedure commonly used for the in vitro regeneration of shoots from a variety of plant tissues. Shoot regeneration occurs on nutrient media supplemented with the plant hormones cytokinin (CK) and auxin, which play essential roles in this process, and genes involved in their signaling cascades act as master regulators of the different phases of shoot regeneration. In the last 20 years, the genetic regulation of DNSO has been characterized in detail. However, as of today, the CK and auxin signaling events associated with shoot regeneration are often interpreted as a consequence of these hormones simply being present in the regeneration media, whereas the roles for their prior uptake and transport into the cultivated plant tissues are generally overlooked. Additionally, sucrose, commonly added to the regeneration media as a carbon source, plays a signaling role and has been recently shown to interact with CK and auxin and to affect the efficiency of shoot regeneration. In this review, we provide an integrative interpretation of the roles for CK and auxin in the process of DNSO, adding emphasis on their uptake from the regeneration media and their interaction with sucrose present in the media to their complex signaling outputs that mediate shoot regeneration.
Collapse
|
27
|
Pearson SA, Wachnowsky C, Cowan JA. Defining the mechanism of the mitochondrial Atm1p [2Fe-2S] cluster exporter. Metallomics 2021; 12:902-915. [PMID: 32337520 DOI: 10.1039/c9mt00286c] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Iron-sulfur cluster proteins play key roles in a multitude of physiological processes; including gene expression, nitrogen and oxygen sensing, electron transfer, and DNA repair. Biosynthesis of iron-sulfur clusters occurs in mitochondria on iron-sulfur cluster scaffold proteins in the form of [2Fe-2S] cores that are then transferred to apo targets within metabolic or respiratory pathways. The mechanism by which cytosolic Fe-S cluster proteins mature to their holo forms remains controversial. The mitochondrial inner membrane protein Atm1p can transport glutathione-coordinated iron-sulfur clusters, which may connect the mitochondrial and cytosolic iron-sulfur cluster assembly systems. Herein we describe experiments on the yeast Atm1p/ABCB7 exporter that provide additional support for a glutathione-complexed cluster as the natural physiological substrate and a reflection of the endosymbiotic model of mitochondrial evolution. These studies provide insight on the mechanism of cluster transport and the molecular basis of human disease conditions related to ABCB7. Recruitment of MgATP following cluster binding promotes a structural transition from closed to open conformations that is mediated by coupling helices, with MgATP hydrolysis facilitating the return to the closed state.
Collapse
Affiliation(s)
- Stephen A Pearson
- The Ohio State University Biophysics Program, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio, USA43210.
| | - Christine Wachnowsky
- The Ohio State University Biochemistry Program, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio, USA43210
| | - J A Cowan
- The Ohio State University Biophysics Program, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio, USA43210. and The Ohio State University Biochemistry Program, The Ohio State University, 484 West 12th Avenue, Columbus, Ohio, USA43210 and Department of Chemistry and Biochemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio, USA43210
| |
Collapse
|
28
|
Zhao J, Ju M, Qian J, Zhang M, Liu T, Zhang K. A Tobacco Syringe Agroinfiltration-Based Method for a Phytohormone Transporter Activity Assay Using Endogenous Substrates. FRONTIERS IN PLANT SCIENCE 2021; 12:660966. [PMID: 33889170 PMCID: PMC8056304 DOI: 10.3389/fpls.2021.660966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
Phytohormones are a group of small chemical molecules that play vital roles in plant development, metabolism, and stress responses. Phytohormones often have distinct biosynthesis and signaling perception sites, requiring long- or short-distance transportation. Unlike biosynthesis and signal transduction, phytohormone transport across cells and organs is poorly understood. The transporter activity assay is a bottleneck for the functional characterization of novel phytohormone transporters. In the present study, we report a tobacco syringe agroinfiltration and liquid chromatography tandem mass spectrometry (TSAL)-based method for performing a phytohormone transporter activity assay using endogenous hormones present in tobacco (Nicotiana benthamiana) leaves. A transporter activity assay using this method does not require isotope-labeled substrates and can be conveniently performed for screening multiple substrates by using endogenous hormones in tobacco leaves. The transporter activities of three known hormone transporters, namely AtABCG25 for abscisic acid, AtABCG16 for jasmonic acid, and AtPUP14 for cytokinin, were all successfully validated using this method. Using this method, cytokinins were found to be the preferred substrates of an unknown maize (Zea mays) transporter ZmABCG43. ZmABCG43 transporter activities toward cytokinins were confirmed in a cytokinin long-distance transport mutant atabcg14 through gene complementation. Thus, the TSAL method has the potential to be used for basic substrate characterization of novel phytohormone transporters or for the screening of novel transporters for a specific phytohormone on a large scale.
Collapse
|
29
|
Ashraf MA, Akihiro T, Ito K, Kumagai S, Sugita R, Tanoi K, Rahman A. ATP binding cassette proteins ABCG37 and ABCG33 function as potassium-independent cesium uptake carriers in Arabidopsis roots. MOLECULAR PLANT 2021; 14:664-678. [PMID: 33588076 DOI: 10.1016/j.molp.2021.02.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/29/2020] [Accepted: 02/03/2021] [Indexed: 05/27/2023]
Abstract
Radiocesium accumulated in the soil by nuclear accidents is a major environmental concern. The transport process of cesium (Cs+) is tightly linked to the indispensable plant nutrient potassium (K+) as they both belong to the group I alkali metals with similar chemical properties. Most of the transporters that had been characterized to date as Cs+ transporters are directly or indirectly linked to K+. Using a combinatorial approach of physiology, genetics, cell biology, and root uptake assay, here we identified two ATP-binding cassette (ABC) proteins, ABCG37 and ABCG33, as facilitators of Cs+ influx. A gain-of-function mutant of ABCG37 (abcg37-1) showed increased sensitivity to Cs+-induced root growth inhibition, while the double knockout mutant of ABCG33 and ABCG37 (abcg33-1abcg37-2) showed resistance, whereas the single loss-of-function mutants of ABCG33 and ABCG37 did not show any alteration in Cs+ response. In planta short-term radioactive Cs+-uptake assay along with growth and uptake assays in a heterologous system confirmed ABCG33 and ABCG37 as Cs+-uptake carriers. Potassium response and content were unaffected in the double-mutant background and yeast cells lacking potassium-uptake carriers transformed with ABCG33 and ABCG37 failed to grow in the absence of K+, confirming that Cs+ uptake by ABCG33 and ABCG37 is independent of K+. Collectively, this work identified two ABC proteins as new Cs+-influx carriers that act redundantly and independent of the K+-uptake pathway.
Collapse
Affiliation(s)
- Mohammad Arif Ashraf
- United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Takashi Akihiro
- Faculty of Life and Environmental Science, Shimane University, Matsue, Shimane 690-8504, Japan
| | - Keita Ito
- Faculty of Agriculture, Department of Plant Bio Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Sayaka Kumagai
- Faculty of Agriculture, Department of Plant Bio Sciences, Iwate University, Morioka, Iwate 020-8550, Japan
| | - Ryohei Sugita
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8654, Japan
| | - Keitaro Tanoi
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8654, Japan; PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Abidur Rahman
- United Graduate School of Agricultural Sciences, Iwate University, Morioka, Iwate 020-8550, Japan; Faculty of Agriculture, Department of Plant Bio Sciences, Iwate University, Morioka, Iwate 020-8550, Japan; Agri-Innovation, Iwate University, Morioka, Iwate 020-8550, Japan.
| |
Collapse
|
30
|
Dahuja A, Kumar RR, Sakhare A, Watts A, Singh B, Goswami S, Sachdev A, Praveen S. Role of ATP-binding cassette transporters in maintaining plant homeostasis under abiotic and biotic stresses. PHYSIOLOGIA PLANTARUM 2021; 171:785-801. [PMID: 33280130 DOI: 10.1111/ppl.13302] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/24/2020] [Accepted: 12/03/2020] [Indexed: 05/20/2023]
Abstract
The ATP-binding cassette (ABC) transporters belong to a large protein family predominantly present in diverse species. ABC transporters are driven by ATP hydrolysis and can act as exporters as well as importers. These proteins are localized in the membranes of chloroplasts, mitochondria, peroxisomes and vacuoles. ABC proteins are involved in regulating diverse biological processes in plants, such as growth, development, uptake of nutrients, tolerance to biotic and abiotic stresses, tolerance to metal toxicity, stomatal closure, shape and size of grains, protection of pollens, transport of phytohormones, etc. In mitochondria and chloroplast, the iron metabolism and its transport across the membrane are mediated by ABC transporters. Tonoplast-localized ABC transporters are involved in internal detoxification of metal ion; thus protecting against the DNA impairment and maintaining cell growth. ABC transporters are involved in the transport of secondary metabolites inside the cells. Microorganisms also engage a large number of ABC transporters to import and expel substrates decisive for their pathogenesis. ABC transporters also suppress the seed embryonic growth until favorable conditions come. This review aims at giving insights on ABC transporters, their evolution, structure, functions and roles in different biological processes for helping the terrestrial plants to survive under adverse environmental conditions. These specialized plant membrane transporters ensure a sustainable economic yield and high-quality products, especially under unfavorable conditions of growth. These transporters can be suitably manipulated to develop 'Plants for the Future'.
Collapse
Affiliation(s)
- Anil Dahuja
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, India
| | - Ranjeet R Kumar
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, India
| | - Akshay Sakhare
- Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, India
| | - Archana Watts
- Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi, India
| | - Bhupinder Singh
- Centre for Environment Science and Climate Resilient Agriculture (CESCRA), Indian Agricultural Research Institute, New Delhi, India
| | - Suneha Goswami
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, India
| | - Archana Sachdev
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, India
| | - Shelly Praveen
- Division of Biochemistry, Indian Agricultural Research Institute, New Delhi, India
| |
Collapse
|
31
|
Comprehensive Analysis and Expression Profiling of PIN, AUX/LAX, and ABCB Auxin Transporter Gene Families in Solanum tuberosum under Phytohormone Stimuli and Abiotic Stresses. BIOLOGY 2021; 10:biology10020127. [PMID: 33562678 PMCID: PMC7915614 DOI: 10.3390/biology10020127] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/01/2021] [Accepted: 02/02/2021] [Indexed: 11/16/2022]
Abstract
Simple Summary In this study, we provide comprehensive information on auxin transporter gene families in potato, including basic parameters, chromosomal distribution, phylogeny, co-expression network analysis, gene structure, tissue-specific expression patterns, subcellular localization, transcription analysis under exogenous hormone stimuli and abiotic stresses, and cis-regulatory element prediction. The responsiveness of auxin transporter family genes to auxin and polar auxin transport inhibitors implied their possible roles in auxin homoeostasis and redistribution. Additionally, the differential expression levels of auxin transporter family genes in response to abscisic acid and abiotic stresses suggested their specific adaptive mechanisms on tolerance to various environmental stimuli. Promoter cis-regulatory element description analyses indicated that a number of cis-regulatory elements within the promoters of auxin transporter genes in potato were targeted by relevant transcription factors to respond to diverse stresses. We are confident that our results provide a foundation for a better understanding of auxin transporters in potato, as we have demonstrated the biological significance of this family of genes in hormone signaling and adaption to environmental stresses. Abstract Auxin is the only plant hormone that exhibits transport polarity mediated by three families: auxin resistant (AUX) 1/like AUX1 (LAX) influx carriers, pin-formed (PIN) efflux carriers, and ATP-binding cassette B (ABCB) influx/efflux carriers. Extensive studies about the biological functions of auxin transporter genes have been reported in model plants. Information regarding these genes in potato remains scarce. Here, we conducted a comprehensive analysis of auxin transporter gene families in potato to examine genomic distributions, phylogeny, co-expression analysis, gene structure and subcellular localization, and expression profiling using bioinformatics tools and qRT-PCR analysis. From these analyses, 5 StLAXs, 10 StPINs, and 22 StABCBs were identified in the potato genome and distributed in 10 of 18 gene modules correlating to the development of various tissues. Transient expression experiments indicated that three representative auxin transporters showed plasma membrane localizations. The responsiveness to auxin and auxin transport inhibitors implied their possible roles in mediating intercellular auxin homoeostasis and redistribution. The differential expression under abscisic acid and abiotic stresses indicated their specific adaptive mechanisms regulating tolerance to environmental stimuli. A large number of auxin-responsive and stress-related cis-elements within their promoters could account for their responsiveness to diverse stresses. Our study aimed to understand the biological significance of potato auxin transporters in hormone signaling and tolerance to environmental stresses.
Collapse
|
32
|
Gräfe K, Schmitt L. The ABC transporter G subfamily in Arabidopsis thaliana. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:92-106. [PMID: 32459300 DOI: 10.1093/jxb/eraa260] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2020] [Accepted: 05/21/2020] [Indexed: 05/02/2023]
Abstract
ABC transporters are ubiquitously present in all kingdoms and mediate the transport of a large spectrum of structurally different compounds. Plants possess high numbers of ABC transporters in relation to other eukaryotes; the ABCG subfamily in particular is extensive. Earlier studies demonstrated that ABCG transporters are involved in important processes influencing plant fitness. This review summarizes the functions of ABCG transporters present in the model plant Arabidopsis thaliana. These transporters take part in diverse processes such as pathogen response, diffusion barrier formation, or phytohormone transport. Studies involving knockout mutations reported pleiotropic phenotypes of the mutants. In some cases, different physiological roles were assigned to the same protein. The actual transported substrate(s), however, still remain to be determined for the majority of ABCG transporters. Additionally, the proposed substrate spectrum of different ABCG proteins is not always reflected by sequence identities between ABCG members. Applying only reverse genetics is thereby insufficient to clearly identify the substrate(s). We therefore stress the importance of in vitro studies in addition to in vivo studies in order to (i) clarify the substrate identity; (ii) determine the transport characteristics including directionality; and (iii) identify dimerization partners of the half-size proteins, which might in turn affect substrate specificity.
Collapse
Affiliation(s)
- Katharina Gräfe
- Institute of Biochemistry and Cluster of Excellence on Plant Sciences CEPLAS, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Lutz Schmitt
- Institute of Biochemistry and Cluster of Excellence on Plant Sciences CEPLAS, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| |
Collapse
|
33
|
Ke M, Ma Z, Wang D, Sun Y, Wen C, Huang D, Chen Z, Yang L, Tan S, Li R, Friml J, Miao Y, Chen X. Salicylic acid regulates PIN2 auxin transporter hyperclustering and root gravitropic growth via Remorin-dependent lipid nanodomain organisation in Arabidopsis thaliana. THE NEW PHYTOLOGIST 2021; 229:963-978. [PMID: 32901934 PMCID: PMC7821329 DOI: 10.1111/nph.16915] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/23/2020] [Indexed: 05/20/2023]
Abstract
To adapt to the diverse array of biotic and abiotic cues, plants have evolved sophisticated mechanisms to sense changes in environmental conditions and modulate their growth. Growth-promoting hormones and defence signalling fine tune plant development antagonistically. During host-pathogen interactions, this defence-growth trade-off is mediated by the counteractive effects of the defence hormone salicylic acid (SA) and the growth hormone auxin. Here we revealed an underlying mechanism of SA regulating auxin signalling by constraining the plasma membrane dynamics of PIN2 auxin efflux transporter in Arabidopsis thaliana roots. The lateral diffusion of PIN2 proteins is constrained by SA signalling, during which PIN2 proteins are condensed into hyperclusters depending on REM1.2-mediated nanodomain compartmentalisation. Furthermore, membrane nanodomain compartmentalisation by SA or Remorin (REM) assembly significantly suppressed clathrin-mediated endocytosis. Consequently, SA-induced heterogeneous surface condensation disrupted asymmetric auxin distribution and the resultant gravitropic response. Our results demonstrated a defence-growth trade-off mechanism by which SA signalling crosstalked with auxin transport by concentrating membrane-resident PIN2 into heterogeneous compartments.
Collapse
Affiliation(s)
- Meiyu Ke
- College of Life Science and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyFujian Agriculture and Forestry UniversityFuzhou350002China
- Haixia Institute of Science and TechnologyHorticultural Plant Biology and Metabolomics CentreFujian Agriculture and Forestry UniversityFuzhou350002China
| | - Zhiming Ma
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
| | - Deyan Wang
- College of Life Science and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyFujian Agriculture and Forestry UniversityFuzhou350002China
- Haixia Institute of Science and TechnologyHorticultural Plant Biology and Metabolomics CentreFujian Agriculture and Forestry UniversityFuzhou350002China
| | - Yanbiao Sun
- College of Life Science and Fujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyFujian Agriculture and Forestry UniversityFuzhou350002China
- Haixia Institute of Science and TechnologyHorticultural Plant Biology and Metabolomics CentreFujian Agriculture and Forestry UniversityFuzhou350002China
| | - Chenjin Wen
- Haixia Institute of Science and TechnologyHorticultural Plant Biology and Metabolomics CentreFujian Agriculture and Forestry UniversityFuzhou350002China
| | - Dingquan Huang
- Haixia Institute of Science and TechnologyHorticultural Plant Biology and Metabolomics CentreFujian Agriculture and Forestry UniversityFuzhou350002China
| | - Zichen Chen
- Haixia Institute of Science and TechnologyHorticultural Plant Biology and Metabolomics CentreFujian Agriculture and Forestry UniversityFuzhou350002China
| | - Liang Yang
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
- Singapore Centre for Environmental Life Sciences EngineeringNanyang Technological UniversitySingapore637551Singapore
| | - Shutang Tan
- Institute of Science and Technology Austria (IST Austria)Am Campus 1Klosterneuburg3400Austria
| | - Ruixi Li
- Department of BiologySouthern University of Science and TechnologyShenzhen518055China
| | - Jiří Friml
- Institute of Science and Technology Austria (IST Austria)Am Campus 1Klosterneuburg3400Austria
| | - Yansong Miao
- School of Biological SciencesNanyang Technological UniversitySingapore637551Singapore
| | - Xu Chen
- Haixia Institute of Science and TechnologyHorticultural Plant Biology and Metabolomics CentreFujian Agriculture and Forestry UniversityFuzhou350002China
| |
Collapse
|
34
|
Geisler MM. A Retro-Perspective on Auxin Transport. FRONTIERS IN PLANT SCIENCE 2021; 12:756968. [PMID: 34675956 PMCID: PMC8524130 DOI: 10.3389/fpls.2021.756968] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/08/2021] [Indexed: 05/13/2023]
|
35
|
Genome-wide identification of polar auxin transporter gene families reveals a possible new polar auxin flow in inverted cuttings of Populus yunnanensis. Gene 2020; 772:145349. [PMID: 33338511 DOI: 10.1016/j.gene.2020.145349] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 10/30/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022]
Abstract
Inverted cuttings of Populus yunnanensis are characterized by enlarged stems and dwarfed new shoots, and phytohormones play a crucial role in the response to inversion. The polar auxin transport (PAT) system is distinct from the transport systems of other hormones and is controlled by three major transporter gene families: pin-formed (PIN), auxin-resistant/like aux (AUX/LAX) and ATP-binding cassette transporters of the B class (ABCB). Here, we identified these three families in P. trichocarpa, P. euphratica and P. yunnanensis through a genome-wide analysis. The Populus PIN, AUX/LAX and ABCB gene families comprised 15, 8 and 31 members, respectively. Most PAT genes in Populus and Arabidopsis were identified as clear sister pairs, and some had unique motifs. Transcriptome profiling revealed that the expression of most PAT genes was unrelated to cutting inversion and that only several genes showed altered expression when cuttings were inverted. The auxin content difference at positions was opposite in upright and inverted cutting bodies during rooting, which obeyed the original plant polarity. However, during plant growth, the two direction types exhibited similar auxin movements in the cutting bodies, and the opposite auxin changes were observed in new shoots. Four PAT genes with a positive response to cutting inversion, PyuPIN10, PyuPIN11, PyuLAX6 and PyuABCB27, showed diverse expression patterns between upright and inverted cuttings during rooting and plant growth. Furthermore, PAT gene expression retained its polarity, which differs from the results found for auxin flow during plant growth. The inconformity indicated that a new downward auxin flow in addition to the old upward flow might be established during the growth of inverted cuttings. Some highly polar PAT genes were involved in the maintenance of original auxin polarity, which might cause the enlarged stems of inverted cuttings. This work lays a foundation for understanding the roles of auxin transport in plant responses to inversion.
Collapse
|
36
|
Thomas C, Aller SG, Beis K, Carpenter EP, Chang G, Chen L, Dassa E, Dean M, Duong Van Hoa F, Ekiert D, Ford R, Gaudet R, Gong X, Holland IB, Huang Y, Kahne DK, Kato H, Koronakis V, Koth CM, Lee Y, Lewinson O, Lill R, Martinoia E, Murakami S, Pinkett HW, Poolman B, Rosenbaum D, Sarkadi B, Schmitt L, Schneider E, Shi Y, Shyng SL, Slotboom DJ, Tajkhorshid E, Tieleman DP, Ueda K, Váradi A, Wen PC, Yan N, Zhang P, Zheng H, Zimmer J, Tampé R. Structural and functional diversity calls for a new classification of ABC transporters. FEBS Lett 2020; 594:3767-3775. [PMID: 32978974 PMCID: PMC8386196 DOI: 10.1002/1873-3468.13935] [Citation(s) in RCA: 150] [Impact Index Per Article: 37.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Revised: 08/19/2020] [Accepted: 09/08/2020] [Indexed: 12/16/2022]
Abstract
Members of the ATP-binding cassette (ABC) transporter superfamily translocate a broad spectrum of chemically diverse substrates. While their eponymous ATP-binding cassette in the nucleotide-binding domains (NBDs) is highly conserved, their transmembrane domains (TMDs) forming the translocation pathway exhibit distinct folds and topologies, suggesting that during evolution the ancient motor domains were combined with different transmembrane mechanical systems to orchestrate a variety of cellular processes. In recent years, it has become increasingly evident that the distinct TMD folds are best suited to categorize the multitude of ABC transporters. We therefore propose a new ABC transporter classification that is based on structural homology in the TMDs.
Collapse
Affiliation(s)
- Christoph Thomas
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Germany
| | - Stephen G Aller
- Department of Pharmacology and Toxicology, University of Alabama at Birmingham, AL, USA
| | - Konstantinos Beis
- Department of Life Sciences, Imperial College London, London South Kensington, UK
- Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, UK
| | | | - Geoffrey Chang
- Skaggs School of Pharmacy and Pharmaceutical Sciences and Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Lei Chen
- State Key Laboratory of Membrane Biology, Institute of Molecular Medicine, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing, China
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Elie Dassa
- Institut Pasteur, Paris Cedex 15, France
| | - Michael Dean
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Gaithersburg, MD, USA
| | - Franck Duong Van Hoa
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Life Sciences Institute, University of British Columbia, Vancouver, BC, Canada
| | - Damian Ekiert
- Department of Cell Biology and Department of Microbiology, New York University School of Medicine, NY, USA
| | - Robert Ford
- Faculty of Biology, Medicine and Health, The University of Manchester, UK
| | - Rachelle Gaudet
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA, USA
| | - Xin Gong
- Department of Biology, Southern University of Science and Technology, Shenzhen, China
| | - I Barry Holland
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Sud, Orsay, France
| | - Yihua Huang
- National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Daniel K Kahne
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
| | - Hiroaki Kato
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Japan
| | | | | | - Youngsook Lee
- Division of Integrative Bioscience and Biotechnology, POSTECH, Pohang, Korea
| | - Oded Lewinson
- Department of Biochemistry, The Bruce and Ruth Rappaport Faculty of Medicine, The Technion-Israel Institute of Technology, Haifa, Israel
| | - Roland Lill
- Institut für Zytobiologie, Philipps-Universität Marburg, Germany
| | - Enrico Martinoia
- Department of Plant and Microbial Biology, University Zurich, Switzerland
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan, China
| | - Satoshi Murakami
- Department of Life Science, Tokyo Institute of Technology, Yokohama, Japan
| | - Heather W Pinkett
- Department of Molecular Biosciences, Northwestern University, Evanston, IL, USA
| | - Bert Poolman
- Department of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, The Netherlands
| | - Daniel Rosenbaum
- Department of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Balazs Sarkadi
- Institute of Enzymology, Research Center for Natural Sciences (RCNS), Budapest, Hungary
| | - Lutz Schmitt
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Erwin Schneider
- Department of Biology/Microbial Physiology, Humboldt-University of Berlin, Germany
| | - Yigong Shi
- Institute of Biology, Westlake Institute for Advanced Study, School of Life Sciences, Westlake University, Hangzhou, China
| | - Show-Ling Shyng
- Department of Chemical Physiology and Biochemistry, Oregon Health & Science University, Portland, OR, USA
| | - Dirk J Slotboom
- Department of Biochemistry, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, The Netherlands
| | - Emad Tajkhorshid
- Department of Biochemistry, Center for Biophysics and Quantitative Biology, NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, IL, USA
| | - D Peter Tieleman
- Department of Biological Sciences and Centre for Molecular Simulation, University of Calgary, AB, Canada
| | - Kazumitsu Ueda
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), KUIAS, Kyoto University, Japan
| | - András Váradi
- Institute of Enzymology, Research Center for Natural Sciences (RCNS), Budapest, Hungary
| | - Po-Chao Wen
- Department of Biochemistry, Center for Biophysics and Quantitative Biology, NIH Center for Macromolecular Modeling and Bioinformatics, Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, IL, USA
| | - Nieng Yan
- Department of Molecular Biology, Princeton University, NJ, USA
| | - Peng Zhang
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Hongjin Zheng
- Department of Biochemistry and Molecular Genetics, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jochen Zimmer
- Molecular Physiology and Biological Physics, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Robert Tampé
- Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Germany
| |
Collapse
|
37
|
Stockner T, Gradisch R, Schmitt L. The role of the degenerate nucleotide binding site in type I ABC exporters. FEBS Lett 2020; 594:3815-3838. [PMID: 33179257 PMCID: PMC7756269 DOI: 10.1002/1873-3468.13997] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/26/2020] [Accepted: 10/15/2020] [Indexed: 12/18/2022]
Abstract
ATP‐binding cassette (ABC) transporters are fascinating molecular machines that are capable of transporting a large variety of chemically diverse compounds. The energy required for translocation is derived from binding and hydrolysis of ATP. All ABC transporters share a basic architecture and are composed of two transmembrane domains and two nucleotide binding domains (NBDs). The latter harbor all conserved sequence motifs that hallmark the ABC transporter superfamily. The NBDs form the nucleotide binding sites (NBSs) in their interface. Transporters with two active NBSs are called canonical transporters, while ABC exporters from eukaryotic organisms, including humans, frequently have a degenerate NBS1 containing noncanonical residues that strongly impair ATP hydrolysis. Here, we summarize current knowledge on degenerate ABC transporters. By integrating structural information with biophysical and biochemical evidence of asymmetric function, we develop a model for the transport cycle of degenerate ABC transporters. We will elaborate on the unclear functional advantages of a degenerate NBS.
Collapse
Affiliation(s)
- Thomas Stockner
- Institute of Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Ralph Gradisch
- Institute of Pharmacology, Center for Physiology and Pharmacology, Medical University of Vienna, Vienna, Austria
| | - Lutz Schmitt
- Institute of Biochemistry, Heinrich Heine University, Düsseldorf, Germany
| |
Collapse
|
38
|
Kroll T, Prescher M, Smits SHJ, Schmitt L. Structure and Function of Hepatobiliary ATP Binding Cassette Transporters. Chem Rev 2020; 121:5240-5288. [PMID: 33201677 DOI: 10.1021/acs.chemrev.0c00659] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The liver is beyond any doubt the most important metabolic organ of the human body. This function requires an intensive crosstalk within liver cellular structures, but also with other organs. Membrane transport proteins are therefore of upmost importance as they represent the sensors and mediators that shuttle signals from outside to the inside of liver cells and/or vice versa. In this review, we summarize the known literature of liver transport proteins with a clear emphasis on functional and structural information on ATP binding cassette (ABC) transporters, which are expressed in the human liver. These primary active membrane transporters form one of the largest families of membrane proteins. In the liver, they play an essential role in for example bile formation or xenobiotic export. Our review provides a state of the art and comprehensive summary of the current knowledge of hepatobiliary ABC transporters. Clearly, our knowledge has improved with a breath-taking speed over the last few years and will expand further. Thus, this review will provide the status quo and will lay the foundation for new and exciting avenues in liver membrane transporter research.
Collapse
Affiliation(s)
- Tim Kroll
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Martin Prescher
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Sander H J Smits
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany.,Center for Structural Studies, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| | - Lutz Schmitt
- Institute of Biochemistry, Heinrich Heine University Düsseldorf, Universitätsstrasse 1, 40225 Düsseldorf, Germany
| |
Collapse
|
39
|
Abstract
Auxin is an endogenous small molecule with an incredibly large impact on growth and development in plants. Movement of auxin between cells, due to its negative charge at most physiological pHs, strongly relies on families of active transporters. These proteins import auxin from the extracellular space or export it into the same. Mutations in these components have profound impacts on biological processes. Another transport route available to auxin, once the substance is inside the cell, are plasmodesmata connections. These small channels connect the cytoplasms of neighbouring plant cells and enable flow between them. Interestingly, the biological significance of this latter mode of transport is only recently starting to emerge with examples from roots, hypocotyls and leaves. The existence of two transport systems provides opportunities for reciprocal cross-regulation. Indeed, auxin levels influence proteins controlling plasmodesmata permeability, while cell-cell communication affects auxin biosynthesis and transport. In an evolutionary context, transporter driven cell-cell auxin movement and plasmodesmata seem to have evolved around the same time in the green lineage. This highlights a co-existence from early on and a likely functional specificity of the systems. Exploring more situations where auxin movement via plasmodesmata has relevance for plant growth and development, and clarifying the regulation of such transport, will be key aspects in coming years.This article has an associated Future Leader to Watch interview with the author of the paper.
Collapse
Affiliation(s)
- Andrea Paterlini
- Sainsbury Laboratory, University of Cambridge, 47 Bateman Street, Cambridge CB2 1 LR, UK
| |
Collapse
|
40
|
Jenness MK, Tayengwa R, Murphy AS. An ATP-Binding Cassette Transporter, ABCB19, Regulates Leaf Position and Morphology during Phototropin1-Mediated Blue Light Responses. PLANT PHYSIOLOGY 2020; 184:1601-1612. [PMID: 32855213 PMCID: PMC7608178 DOI: 10.1104/pp.20.00223] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 08/18/2020] [Indexed: 05/25/2023]
Abstract
Blue light regulates multiple processes that optimize light capture and gas exchange in plants, including chloroplast movement, changes in stomatal conductance, and altered organ positioning. In Arabidopsis (Arabidopsis thaliana), these processes are primarily modulated by the blue light phototropin photoreceptors phot1 and phot2. Changes in leaf positioning and shape involve several signaling components that include NON-PHOTOTROPIC HYPOCOTYL3, PHYTOCHROME KINASE SUBSTRATE, ROOT PHOTOTROPISM2, and alterations in localized auxin streams. Direct phosphorylation of the auxin transporter ATP-BINDING CASSETTE subfamily B19 (ABCB19) by phot1 in phototropic seedlings suggests that phot1 may directly regulate ABCB19 to adjust auxin-dependent leaf responses. Here, abcb19 mutants were analyzed for fluence and blue light-dependent changes in leaf positioning and morphology. abcb19 displays upright petiole angles that remain unchanged in response to red and blue light. Similarly, abcb19 mutants develop irregularly wavy rosette leaves that are less sensitive to blue light-mediated leaf flattening. Visualization of auxin distribution, measurement of auxin transport in protoplasts, and direct quantification of free auxin levels suggest these irregularities are caused by misregulation of ABCB19-mediated auxin distribution in addition to light-dependent auxin biosynthesis.
Collapse
Affiliation(s)
- Mark K Jenness
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20740
| | - Reuben Tayengwa
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20740
| | - Angus S Murphy
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, Maryland 20740
| |
Collapse
|
41
|
Yang T, Feng H, Zhang S, Xiao H, Hu Q, Chen G, Xuan W, Moran N, Murphy A, Yu L, Xu G. The Potassium Transporter OsHAK5 Alters Rice Architecture via ATP-Dependent Transmembrane Auxin Fluxes. PLANT COMMUNICATIONS 2020; 1:100052. [PMID: 33367257 PMCID: PMC7747981 DOI: 10.1016/j.xplc.2020.100052] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/29/2019] [Accepted: 04/27/2020] [Indexed: 05/24/2023]
Abstract
Plant HAK/KUP/KT family members function as plasma membrane (PM) H+/K+ symporters and may modulate chemiosmotically-driven polar auxin transport (PAT). Here, we show that inactivation of OsHAK5, a rice K+ transporter gene, decreased rootward and shootward PAT, tiller number, and the length of both lateral roots and root hairs, while OsHAK5 overexpression increased PAT, tiller number, and root hair length, irrespective of the K+ supply. Inhibitors of ATP-binding-cassette type-B transporters, NPA and BUM, abolished the OsHAK5-overexpression effect on PAT. The mechanistic basis of these changes included the OsHAK5-mediated decrease of transmembrane potential (depolarization), increase of extracellular pH, and increase of PM-ATPase activity. These findings highlight the dual roles of OsHAK5 in altering cellular chemiosmotic gradients (generated continuously by PM H+-ATPase) and regulating ATP-dependent auxin transport. Both functions may underlie the prominent effect of OsHAK5 on rice architecture, which may be exploited in the future to increase crop yield via genetic manipulations.
Collapse
Affiliation(s)
- Tianyuan Yang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Huimin Feng
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Song Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Huojun Xiao
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Qingdi Hu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Guang Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Wei Xuan
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Nava Moran
- The R.H. Smith Faculty of Agriculture, Food, and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Angus Murphy
- Department of Plant Science and Landscape Architecture, University of Maryland, College Park, MD, USA
| | - Ling Yu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| | - Guohua Xu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, MOA Key Laboratory of Plant Nutrition and Fertilization in Lower-Middle Reaches of the Yangtze River, Nanjing Agricultural University, Nanjing 210095, China
| |
Collapse
|
42
|
Hao P, Xia J, Liu J, Di Donato M, Pakula K, Bailly A, Jasinski M, Geisler M. Auxin-transporting ABC transporters are defined by a conserved D/E-P motif regulated by a prolylisomerase. J Biol Chem 2020; 295:13094-13105. [PMID: 32699109 PMCID: PMC7489919 DOI: 10.1074/jbc.ra120.014104] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/16/2020] [Indexed: 12/15/2022] Open
Abstract
The plant hormone auxin must be transported throughout plants in a cell-to-cell manner to affect its various physiological functions. ABCB transporters are critical for this polar auxin distribution, but the regulatory mechanisms controlling their function is not fully understood. The auxin transport activity of ABCB1 was suggested to be regulated by a physical interaction with FKBP42/Twisted Dwarf1 (TWD1), a peptidylprolyl cis-trans isomerase (PPIase), but all attempts to demonstrate such a PPIase activity by TWD1 have failed so far. By using a structure-based approach, we identified several surface-exposed proline residues in the nucleotide binding domain and linker of Arabidopsis ABCB1, mutations of which do not alter ABCB1 protein stability or location but do affect its transport activity. P1008 is part of a conserved signature D/E-P motif that seems to be specific for auxin-transporting ABCBs, which we now refer to as ATAs. Mutation of the acidic residue also abolishes auxin transport activity by ABCB1. All higher plant ABCBs for which auxin transport has been conclusively proven carry this conserved motif, underlining its predictive potential. Introduction of this D/E-P motif into malate importer, ABCB14, increases both its malate and its background auxin transport activity, suggesting that this motif has an impact on transport capacity. The D/E-P1008 motif is also important for ABCB1-TWD1 interactions and activation of ABCB1-mediated auxin transport by TWD1. In summary, our data imply a new function for TWD1 acting as a putative activator of ABCB-mediated auxin transport by cis-trans isomerization of peptidyl-prolyl bonds.
Collapse
Affiliation(s)
- Pengchao Hao
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Jian Xia
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Jie Liu
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Martin Di Donato
- Department of Biology, University of Fribourg, Fribourg, Switzerland
| | - Konrad Pakula
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland; NanoBioMedical Centre, Adam Mickiewicz University, Poznan, Poland
| | - Aurélien Bailly
- Institute for Plant and Microbial Biology, Zurich, Switzerland
| | - Michal Jasinski
- Department of Plant Molecular Physiology, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland; Department of Biochemistry and Biotechnology, Poznan University of Life Sciences, Poznan, Poland
| | - Markus Geisler
- Department of Biology, University of Fribourg, Fribourg, Switzerland.
| |
Collapse
|
43
|
Ye X, Chen XF, Cai LY, Lai NW, Deng CL, Guo JX, Yang LT, Chen LS. Molecular and physiological mechanisms underlying magnesium-deficiency-induced enlargement, cracking and lignification of Citrus sinensis leaf veins. TREE PHYSIOLOGY 2020; 40:1277-1291. [PMID: 32348504 DOI: 10.1093/treephys/tpaa059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 04/13/2020] [Accepted: 04/21/2020] [Indexed: 06/11/2023]
Abstract
Little is known about the physiological and molecular mechanisms underlying magnesium (Mg)-deficiency-induced enlargement, cracking and lignification of midribs and main lateral veins of Citrus leaves. Citrus sinensis (L.) Osbeck seedlings were irrigated with nutrient solution at a concentration of 0 (Mg-deficiency) or 2 (Mg-sufficiency) mM Mg(NO3)2 for 16 weeks. Enlargement, cracking and lignification of veins occurred only in lower leaves, but not in upper leaves. Total soluble sugars (glucose + fructose + sucrose), starch and cellulose concentrations were less in Mg-deficiency veins of lower leaves (MDVLL) than those in Mg-sufficiency veins of lower leaves (MSVLL), but lignin concentration was higher in MDVLL than that in MSVLL. However, all four parameters were similar between Mg-deficiency veins of upper leaves (MDVUL) and Mg-sufficiency veins of upper leaves (MSVUL). Using label-free, liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis, we identified 1229 and 492 differentially abundant proteins (DAPs) in MDVLL vs MSVLL and MDVUL vs MSVUL, respectively. Magnesium-deficiency-induced alterations of Mg, nonstructural carbohydrates, cell wall components, and protein profiles were greater in veins of lower leaves than those in veins of upper leaves. The increased concentration of lignin in MDVLL vs MSVLL might be caused by the following factors: (i) repression of cellulose and starch accumulation promoted lignin biosynthesis; (ii) abundances of proteins involved in phenylpropanoid biosynthesis pathway, hormone biosynthesis and glutathione metabolism were increased; and (iii) the abundances of the other DAPs [viz., copper/zinc-superoxide dismutase, ascorbate oxidase (AO) and ABC transporters] involved in lignin biosynthesis were elevated. Also, the abundances of several proteins involved in cell wall metabolism (viz., expansins, Rho GTPase-activating protein gacA, AO, monocopper oxidase-like protein and xyloglucan endotransglucosylase/hydrolase) were increased in MDVLL vs MSVLL, which might be responsible for the enlargement and cracking of leaf veins.
Collapse
Affiliation(s)
- Xin Ye
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University (FAFU), 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
| | - Xu-Feng Chen
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University (FAFU), 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
| | - Li-Ya Cai
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University (FAFU), 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
| | - Ning-Wei Lai
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University (FAFU), 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
| | - Chong-Ling Deng
- Guangxi Key Laboratory of Citrus Biology, Guangxi Academy of Specialty Crops, 40 Putuo Road, Qixing District, Guilin 541004, China
| | - Jiu-Xin Guo
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University (FAFU), 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
| | - Lin-Tong Yang
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University (FAFU), 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
| | - Li-Song Chen
- Institute of Plant Nutritional Physiology and Molecular Biology, College of Resources and Environment, Fujian Agriculture and Forestry University (FAFU), 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
- The Higher Education Key Laboratory of Fujian Province for Soil Ecosystem Health and Regulation, College of Resources and Environment, FAFU, 15 Shangxiadian Road, Cangshan District, Fuzhou 350002, China
| |
Collapse
|
44
|
Johnston CR, Malladi A, Vencill WK, Grey TL, Culpepper AS, Henry G, Czarnota MA, Randell TM. Investigation of physiological and molecular mechanisms conferring diurnal variation in auxinic herbicide efficacy. PLoS One 2020; 15:e0238144. [PMID: 32857790 PMCID: PMC7454982 DOI: 10.1371/journal.pone.0238144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/10/2020] [Indexed: 11/18/2022] Open
Abstract
The efficacy of auxinic herbicides, a valuable weed control tool for growers worldwide, has been shown to vary with the time of day in which applications are made. However, little is known about the mechanisms causing this phenomenon. Investigating the differential in planta behavior of these herbicides across different times of application may grant an ability to advise which properties of auxinic herbicides are desirable when applications must be made around the clock. Radiolabeled herbicide experiments demonstrated a likely increase in ATP-binding cassette subfamily B (ABCB)-mediated 2,4-D and dicamba transport in Palmer amaranth (Amaranthus palmeri S. Watson) at simulated dawn compared to mid-day, as dose response models indicated that many orders of magnitude higher concentrations of N-1-naphthylphthalamic acid (NPA) and verapamil, respectively, are required to inhibit translocation by 50% at simulated sunrise compared to mid-day. Gas chromatographic analysis displayed that ethylene evolution in A. palmeri was higher when dicamba was applied during mid-day compared to sunrise. Furthermore, it was found that inhibition of translocation via 2,3,5-triiodobenzoic acid (TIBA) resulted in an increased amount of 2,4-D-induced ethylene evolution at sunrise, and the inhibition of dicamba translocation via NPA reversed the difference in ethylene evolution across time of application. Dawn applications of these herbicides were associated with increased expression of a putative 9-cis-epoxycarotenoid dioxygenase biosynthesis gene NCED1, while there was a notable lack of trends observed across times of day and across herbicides with ACS1, encoding 1-aminocyclopropane-1-carboxylic acid synthase. Overall, this research indicates that translocation is differentially regulated via specific protein-level mechanisms across times of application, and that ethylene release, a chief phytotoxic process involved in the response to auxinic herbicides, is related to translocation. Furthermore, transcriptional regulation of abscisic acid involvement in phytotoxicity and/or translocation are suggested.
Collapse
Affiliation(s)
- Christopher R. Johnston
- Department of Crop & Soil Sciences, University of Georgia, Athens, GA, United States of America
| | - Anish Malladi
- Department of Horticulture, University of Georgia, Athens, GA, United States of America
| | - William K. Vencill
- Department of Crop & Soil Sciences, University of Georgia, Athens, GA, United States of America
| | - Timothy L. Grey
- Department of Crop & Soil Sciences, University of Georgia, Tifton, GA, United States of America
| | - A. Stanley Culpepper
- Department of Crop & Soil Sciences, University of Georgia, Tifton, GA, United States of America
| | - Gerald Henry
- Department of Crop & Soil Sciences, University of Georgia, Athens, GA, United States of America
| | - Mark A. Czarnota
- Department of Horticulture, University of Georgia, Griffin, GA, United States of America
| | - Taylor M. Randell
- Department of Crop & Soil Sciences, University of Georgia, Tifton, GA, United States of America
| |
Collapse
|
45
|
Abstract
As the outermost cell layer of an organism, the epidermis plays a key role in controlling morphogenesis. In this work, we investigated cell-shape regulation in young, lobing pavement cells of the Arabidopsis leaf epidermis. By taking advantage of their developmental synchrony, we showed that the establishment of a local auxin gradient is necessary for the initiation of first-lobe formation. However, the auxin gradient is not stable over time but rather fluctuates according to the particular developmental stage of the cells. These changes are established by the specific distribution of auxin transporters at the different membranes of these young pavement cells. This work reports an observation of auxin fluctuation during cell-shape determination in plants. Puzzle-shaped pavement cells provide a powerful model system to investigate the cellular and subcellular processes underlying complex cell-shape determination in plants. To better understand pavement cell-shape acquisition and the role of auxin in this process, we focused on the spirals of young stomatal lineage ground cells of Arabidopsis leaf epidermis. The predictability of lobe formation in these cells allowed us to demonstrate that the auxin response gradient forms within the cells of the spiral and fluctuates based on the particular stage of lobe development. We revealed that specific localization of auxin transporters at the different membranes of these young cells changes during the course of lobe formation, suggesting that these fluctuating auxin response gradients are orchestrated via auxin transport to control lobe formation and determine pavement cell shape.
Collapse
|
46
|
Mellor NL, Voß U, Janes G, Bennett MJ, Wells DM, Band LR. Auxin fluxes through plasmodesmata modify root-tip auxin distribution. Development 2020; 147:dev181669. [PMID: 32229613 PMCID: PMC7132777 DOI: 10.1242/dev.181669] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 02/17/2020] [Indexed: 01/05/2023]
Abstract
Auxin is a key signal regulating plant growth and development. It is well established that auxin dynamics depend on the spatial distribution of efflux and influx carriers on the cell membranes. In this study, we employ a systems approach to characterise an alternative symplastic pathway for auxin mobilisation via plasmodesmata, which function as intercellular pores linking the cytoplasm of adjacent cells. To investigate the role of plasmodesmata in auxin patterning, we developed a multicellular model of the Arabidopsis root tip. We tested the model predictions using the DII-VENUS auxin response reporter, comparing the predicted and observed DII-VENUS distributions using genetic and chemical perturbations designed to affect both carrier-mediated and plasmodesmatal auxin fluxes. The model revealed that carrier-mediated transport alone cannot explain the experimentally determined auxin distribution in the root tip. In contrast, a composite model that incorporates both carrier-mediated and plasmodesmatal auxin fluxes re-capitulates the root-tip auxin distribution. We found that auxin fluxes through plasmodesmata enable auxin reflux and increase total root-tip auxin. We conclude that auxin fluxes through plasmodesmata modify the auxin distribution created by efflux and influx carriers.
Collapse
Affiliation(s)
- Nathan L Mellor
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - Ute Voß
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - George Janes
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - Malcolm J Bennett
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - Darren M Wells
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
| | - Leah R Band
- Division of Plant and Crop Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD, UK
- Centre for Mathematical Medicine and Biology, School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD, UK
| |
Collapse
|
47
|
Bahmani R, Kim D, Modareszadeh M, Thompson AJ, Park JH, Yoo HH, Hwang S. The mechanism of root growth inhibition by the endocrine disruptor bisphenol A (BPA). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 257:113516. [PMID: 31733969 DOI: 10.1016/j.envpol.2019.113516] [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: 07/10/2019] [Revised: 10/18/2019] [Accepted: 10/28/2019] [Indexed: 05/12/2023]
Abstract
Bisphenol A (BPA) is a harmful environmental contaminant acting as an endocrine disruptor in animals, but it also affects growth and development in plants. Here, we have elucidated the functional mechanism of root growth inhibition by BPA in Arabidopsis thaliana using mutants, reporter lines and a pharmacological approach. In response to 10 ppm BPA, fresh weight and main root length were reduced, while auxin levels increased. BPA inhibited root growth by reducing root cell length in the elongation zone by suppressing expansin expression and by decreasing the length of the meristem zone by repressing cell division. The inhibition of cell elongation and cell division was attributed to the enhanced accumulation/redistribution of auxin in the elongation zone and meristem zone in response to BPA. Correspondingly, the expressions of most auxin biosynthesis and transporter genes were enhanced in roots by BPA. Taken together, it is assumed that the endocrine disruptor BPA inhibits primary root growth by inhibiting cell elongation and division through auxin accumulation/redistribution in Arabidopsis. This study will contribute to understanding how BPA affects growth and development in plants.
Collapse
Affiliation(s)
- Ramin Bahmani
- Department of Molecular Biology, Sejong University, Seoul, 143-747, South Korea; Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, 143-747, South Korea; The Plant Engineering Research Institute, Sejong University, Seoul, 143-747, South Korea
| | - DongGwan Kim
- Department of Molecular Biology, Sejong University, Seoul, 143-747, South Korea; Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, 143-747, South Korea; The Plant Engineering Research Institute, Sejong University, Seoul, 143-747, South Korea
| | - Mahsa Modareszadeh
- Department of Molecular Biology, Sejong University, Seoul, 143-747, South Korea; Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, 143-747, South Korea; The Plant Engineering Research Institute, Sejong University, Seoul, 143-747, South Korea
| | - Andrew J Thompson
- Cranfield Soil and Agrifood Institute, Cranfield University, Cranfield, Bedfordshire, MK43 0AL, UK
| | - Jeong Hoon Park
- College of Pharmacy, Hanyang University, Ansan, Gyeonggi-do 15588, South Korea
| | - Hye Hyun Yoo
- College of Pharmacy, Hanyang University, Ansan, Gyeonggi-do 15588, South Korea
| | - Seongbin Hwang
- Department of Molecular Biology, Sejong University, Seoul, 143-747, South Korea; Department of Bioindustry and Bioresource Engineering, Sejong University, Seoul, 143-747, South Korea; The Plant Engineering Research Institute, Sejong University, Seoul, 143-747, South Korea.
| |
Collapse
|
48
|
Boer MD, Santos Teixeira J, Ten Tusscher KH. Modeling of Root Nitrate Responses Suggests Preferential Foraging Arises From the Integration of Demand, Supply and Local Presence Signals. FRONTIERS IN PLANT SCIENCE 2020; 11:708. [PMID: 32536935 PMCID: PMC7268170 DOI: 10.3389/fpls.2020.00708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 05/05/2020] [Indexed: 05/02/2023]
Abstract
A plants' fitness to a large extent depends on its capacity to adapt to spatio-temporally varying environmental conditions. One such environmental condition to which plants display extensive phenotypic plasticity is soil nitrate levels and patterns. In response to heterogeneous nitrate distribution, plants show a so-called preferential foraging response. Herein root growth is enhanced in high nitrate patches and repressed in low nitrate locations beyond a level that can be explained from local nitrate sensing. Although various molecular players involved in this preferential foraging behavior have been identified, how these together shape root system adaptation has remained unresolved. Here we use a simple modeling approach in which we incrementally incorporate the known molecular pathways to investigate the combination of regulatory mechanisms that underly preferential root nitrate foraging. Our model suggests that instead of involving a growth suppressing supply signal, growth reduction on the low nitrate side may arise from reduced root foraging and increased competition for carbon. Additionally, our work suggests that the long distance CK signaling involved in preferential root foraging may function as a supply signal modulating demand signaling strength. We illustrate how this integration of demand and supply signals prevents excessive preferential foraging under conditions in which demand is not met by sufficient supply and a more generic foraging in search of nitrate should be maintained.
Collapse
|
49
|
Finkenwirth F, Eitinger T. ECF-type ABC transporters for uptake of vitamins and transition metal ions into prokaryotic cells. Res Microbiol 2019; 170:358-365. [PMID: 31283960 DOI: 10.1016/j.resmic.2019.06.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/27/2019] [Accepted: 06/29/2019] [Indexed: 12/15/2022]
Abstract
Energy-coupling factor (ECF) transporters mediate the uptake of micronutrients in prokaryotes. They consist of two ATP-binding-cassette family ATPases, a transmembrane coupling protein (T component) and a substrate-binding membrane protein (S component). ECF transporters for Co2+ and Ni2+ ions have one or two additional proteins with extracytoplasmic regions but poorly understood function. Homologs of T components with a predicted localization in plastids are widespread in plants but their physiological role is unclear. S components in eukaryotes are very rare and restricted to biotin-specific variants. Apart from a potential contribution to the export of flavins to serve the assembly of extracytoplasmic electron transfer chains, ECF transporters function as importers.
Collapse
Affiliation(s)
- Friedrich Finkenwirth
- Institut für Biologie/Mikrobiologie, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany
| | - Thomas Eitinger
- Institut für Biologie/Mikrobiologie, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany.
| |
Collapse
|
50
|
Singh D, Raina TK, Kumar A, Singh J, Prasad R. Plant microbiome: A reservoir of novel genes and metabolites. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.plgene.2019.100177] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|