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Jiang Y, Yue Y, Wang Z, Lu C, Yin Z, Li Y, Ding X. Plant Biostimulant as an Environmentally Friendly Alternative to Modern Agriculture. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:5107-5121. [PMID: 38428019 DOI: 10.1021/acs.jafc.3c09074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2024]
Abstract
Ensuring the safety of crop production presents a significant challenge to humanity. Pesticides and fertilizers are commonly used to eliminate external interference and provide nutrients, enabling crops to sustain growth and defense. However, the addition of chemical substances does not meet the environmental standards required for agricultural production. Recently, natural sources such as biostimulants have been found to help plants with growth and defense. The development of biostimulants provides new solutions for agricultural product safety and has become a widely utilized tool in agricultural. The review summarizes the classification of biostimulants, including humic-based biostimulant, protein-based biostimulant, oligosaccharide-based biostimulant, metabolites-based biostimulants, inorganic substance, and microbial inoculant. This review attempts to summarize suitable alternative technology that can address the problems and analyze the current state of biostimulants, summarizes the research mechanisms, and anticipates future technological developments and market trends, which provides comprehensive information for researchers to develop biostimulants.
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Affiliation(s)
- Yanke Jiang
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai an, Shandong 271018, China
| | - Yingzhe Yue
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai an, Shandong 271018, China
| | - Zhaoxu Wang
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai an, Shandong 271018, China
| | - Chongchong Lu
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai an, Shandong 271018, China
| | - Ziyi Yin
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai an, Shandong 271018, China
| | - Yang Li
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai an, Shandong 271018, China
| | - Xinhua Ding
- State Key Laboratory of Crop Biology, Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect Pests, College of Plant Protection, Shandong Agricultural University, Tai an, Shandong 271018, China
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Harris FM, Mou Z. Damage-Associated Molecular Patterns and Systemic Signaling. PHYTOPATHOLOGY 2024; 114:308-327. [PMID: 37665354 DOI: 10.1094/phyto-03-23-0104-rvw] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2023]
Abstract
Cellular damage inflicted by wounding, pathogen infection, and herbivory releases a variety of host-derived metabolites, degraded structural components, and peptides into the extracellular space that act as alarm signals when perceived by adjacent cells. These so-called damage-associated molecular patterns (DAMPs) function through plasma membrane localized pattern recognition receptors to regulate wound and immune responses. In plants, DAMPs act as elicitors themselves, often inducing immune outputs such as calcium influx, reactive oxygen species generation, defense gene expression, and phytohormone signaling. Consequently, DAMP perception results in a priming effect that enhances resistance against subsequent pathogen infections. Alongside their established function in local tissues, recent evidence supports a critical role of DAMP signaling in generation and/or amplification of mobile signals that induce systemic immune priming. Here, we summarize the identity, signaling, and synergy of proposed and established plant DAMPs, with a focus on those with published roles in systemic signaling.
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Affiliation(s)
- Fiona M Harris
- Department of Microbiology and Cell Science, University of Florida, P.O. Box 110700, Gainesville, FL 32611
| | - Zhonglin Mou
- Department of Microbiology and Cell Science, University of Florida, P.O. Box 110700, Gainesville, FL 32611
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Hou S, Rodrigues O, Liu Z, Shan L, He P. Small holes, big impact: Stomata in plant-pathogen-climate epic trifecta. MOLECULAR PLANT 2024; 17:26-49. [PMID: 38041402 PMCID: PMC10872522 DOI: 10.1016/j.molp.2023.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/09/2023] [Accepted: 11/28/2023] [Indexed: 12/03/2023]
Abstract
The regulation of stomatal aperture opening and closure represents an evolutionary battle between plants and pathogens, characterized by adaptive strategies that influence both plant resistance and pathogen virulence. The ongoing climate change introduces further complexity, affecting pathogen invasion and host immunity. This review delves into recent advances on our understanding of the mechanisms governing immunity-related stomatal movement and patterning with an emphasis on the regulation of stomatal opening and closure dynamics by pathogen patterns and host phytocytokines. In addition, the review explores how climate changes impact plant-pathogen interactions by modulating stomatal behavior. In light of the pressing challenges associated with food security and the unpredictable nature of climate changes, future research in this field, which includes the investigation of spatiotemporal regulation and engineering of stomatal immunity, emerges as a promising avenue for enhancing crop resilience and contributing to climate control strategies.
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Affiliation(s)
- Shuguo Hou
- Peking University Institute of Advanced Agricultural Sciences, Shandong Laboratory of Advanced Agriculture Sciences in Weifang, Weifang, Shandong 261325, China; School of Municipal & Environmental Engineering, Shandong Jianzhu University, Jinan, Shandong 250101, China.
| | - Olivier Rodrigues
- Unité de Recherche Physiologie, Pathologie et Génétique Végétales, Université de Toulouse Midi-Pyrénées, INP-PURPAN, 31076 Toulouse, France
| | - Zunyong Liu
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Libo Shan
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ping He
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI 48109, USA.
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Shi Z, Zhang Y, Wang X, Pang H, Jia L, Sun K, Zhang J, Du J, Feng H. Extracellular ATP sensing in living plant tissues with a genetically encoded, ratiometric fluorescent sensor. THE NEW PHYTOLOGIST 2023; 238:1343-1350. [PMID: 36891672 DOI: 10.1111/nph.18868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Affiliation(s)
- Zhenzhen Shi
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Yuejing Zhang
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Xin Wang
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Hailong Pang
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Lingyun Jia
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Kun Sun
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Ji Zhang
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
- New Rural Development Research Institute, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Jie Du
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
| | - Hanqing Feng
- College of Life Science, Northwest Normal University, Lanzhou, Gansu, 730070, China
- New Rural Development Research Institute, Northwest Normal University, Lanzhou, Gansu, 730070, China
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Kim D, Chen D, Ahsan N, Jorge GL, Thelen JJ, Stacey G. The Raf-like MAPKKK INTEGRIN-LINKED KINASE 5 regulates purinergic receptor-mediated innate immunity in Arabidopsis. THE PLANT CELL 2023; 35:1572-1592. [PMID: 36762404 PMCID: PMC10118279 DOI: 10.1093/plcell/koad029] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 01/31/2023] [Indexed: 06/17/2023]
Abstract
Mitogen-activated protein (MAP) kinase signaling cascades play important roles in eukaryotic defense against various pathogens. Activation of the extracellular ATP (eATP) receptor P2K1 triggers MAP kinase 3 and 6 (MPK3/6) phosphorylation, which leads to an elevated plant defense response. However, the mechanism by which P2K1 activates the MAPK cascade is unclear. In this study, we show that in Arabidopsis thaliana, P2K1 phosphorylates the Raf-like MAP kinase kinase kinase (MAPKKK) INTEGRIN-LINKED KINASE 5 (ILK5) on serine 192 in the presence of eATP. The interaction between P2K1 and ILK5 was confirmed both in vitro and in planta and their interaction was enhanced by ATP treatment. Similar to P2K1 expression, ILK5 expression levels were highly induced by treatment with ATP, flg22, Pseudomonas syringae pv. tomato DC3000, and various abiotic stresses. ILK5 interacts with and phosphorylates the MAP kinase MKK5. Moreover, phosphorylation of MPK3/6 was significantly reduced upon ATP treatment in ilk5 mutant plants, relative to wild-type (WT). The ilk5 mutant plants showed higher susceptibility to P. syringae pathogen infection relative to WT plants. Plants expressing only the mutant ILK5S192A protein, with decreased kinase activity, did not activate the MAPK cascade upon ATP addition. These results suggest that eATP activation of P2K1 results in transphosphorylation of the Raf-like MAPKKK ILK5, which subsequently triggers the MAPK cascade, culminating in activation of MPK3/6 associated with an elevated innate immune response.
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Affiliation(s)
- Daewon Kim
- Division of Plant Science and Technology, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, USA
| | - Dongqin Chen
- Division of Plant Science and Technology, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, USA
| | - Nagib Ahsan
- Division of Biochemistry, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, USA
| | - Gabriel Lemes Jorge
- Division of Biochemistry, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, USA
| | - Jay J Thelen
- Division of Biochemistry, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, USA
| | - Gary Stacey
- Division of Plant Science and Technology, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, USA
- Division of Biochemistry, C.S. Bond Life Science Center, University of Missouri, Columbia, MO 65211, USA
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Genome-Wide Investigation of Apyrase (APY) Genes in Peanut ( Arachis hypogaea L.) and Functional Characterization of a Pod-Abundant Expression Promoter AhAPY2-1p. Int J Mol Sci 2023; 24:ijms24054622. [PMID: 36902052 PMCID: PMC10003104 DOI: 10.3390/ijms24054622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/05/2023] [Accepted: 01/12/2023] [Indexed: 03/06/2023] Open
Abstract
Peanut (Arachis hypogaea L.) is an important food and feed crop worldwide and is affected by various biotic and abiotic stresses. The cellular ATP levels decrease significantly during stress as ATP molecules move to extracellular spaces, resulting in increased ROS production and cell apoptosis. Apyrases (APYs) are the nucleoside phosphatase (NPTs) superfamily members and play an important role in regulating cellular ATP levels under stress. We identified 17 APY homologs in A. hypogaea (AhAPYs), and their phylogenetic relationships, conserved motifs, putative miRNAs targeting different AhAPYs, cis-regulatory elements, etc., were studied in detail. The transcriptome expression data were used to observe the expression patterns in different tissues and under stress conditions. We found that the AhAPY2-1 gene showed abundant expression in the pericarp. As the pericarp is a key defense organ against environmental stress and promoters are the key elements regulating gene expression, we functionally characterized the AhAPY2-1 promoter for its possible use in future breeding programs. The functional characterization of AhAPY2-1P in transgenic Arabidopsis plants showed that it effectively regulated GUS gene expression in the pericarp. GUS expression was also detected in flowers of transgenic Arabidopsis plants. Overall, these results strongly suggest that APYs are an important future research subject for peanut and other crops, and AhPAY2-1P can be used to drive the resistance-related genes in a pericarp-specific manner to enhance the defensive abilities of the pericarp.
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Zhang F, Meng Y, Wang Y, Zhu S, Liu R, Li J, Xu L, Huang L. VmPma1 contributes to virulence via regulation of the acidification process during host infection in Valsa mali. Int J Biol Macromol 2023; 228:123-137. [PMID: 36566811 DOI: 10.1016/j.ijbiomac.2022.12.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 12/10/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
Valsa mali is a destructive phytopathogenic fungus that mainly infects apple and pear trees. Infection with V. mali results in host tissue acidification via the generation of citric acid, which promote invasion. Here, two plasma membrane H+-ATPases, VmPma1 and VmPma2, were identified in V. mali. The VmPma1 deletion mutant (∆VmPma1) displayed higher intracellular acid accumulation and a lower growth rate compared to the wild type. In contrast, the VmPma2 deletion mutant (∆VmPma2) showed no obvious phenotypic differences. Meanwhile, loss of VmPma1, but not VmPma2, in V. mali led to a significant decrease in growth under acidic or alkaline conditions compared with WT. More importantly, ∆VmPma1 showed a greater reduction in ATPase hydrolase activity and acidification of the external environment, more sensitivity to abiotic stress, and weaker pathogenicity than ∆VmPma2. This evidence indicates that VmPma1 is the main gene of the two plasma membrane H+-ATPases. Transcriptomic analysis indicated that many metabolic processes regulated by VmPma1 are strictly pH-regulated. Besides, we identified two genes (named VmAgn1p and Vmap1) that contribute to the pathogenicity of V. mali by differentially regulating external acidification capacity. Overall, our findings show that VmPma1 plays a pivotal role in pathogenicity by affecting the acidification of V. mali.
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Affiliation(s)
- Feiran Zhang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yangguang Meng
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yinghao Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Shan Zhu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Ronghao Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Jianyu Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Liangsheng Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Lili Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
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Xu J, Han L, Xia S, Zhu R, Kang E, Shang Z. ATANN3 Is Involved in Extracellular ATP-Regulated Auxin Distribution in Arabidopsis thaliana Seedlings. PLANTS (BASEL, SWITZERLAND) 2023; 12:330. [PMID: 36679043 PMCID: PMC9867528 DOI: 10.3390/plants12020330] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/07/2023] [Accepted: 01/07/2023] [Indexed: 06/17/2023]
Abstract
Extracellular ATP (eATP) plays multiple roles in plant growth and development, and stress responses. It has been revealed that eATP suppresses growth and alters the growth orientation of the root and hypocotyl of Arabidopsis thaliana by affecting auxin transport and localization in these organs. However, the mechanism of the eATP-stimulated auxin distribution remains elusive. Annexins are involved in multiple aspects of plant cellular metabolism, while their role in response to apoplastic signals remains unclear. Here, by using the loss-of-function mutations, we investigated the role of AtANN3 in the eATP-regulated root and hypocotyl growth. Firstly, the inhibitory effects of eATP on root and hypocotyl elongation were weakened or impaired in the AtANN3 null mutants (atann3-1 and atann3-2). Meanwhile, the distribution of DR5-GUS and DR5-GFP indicated that the eATP-induced asymmetric distribution of auxin in the root tips or hypocotyl cells occurred in wild-type control plants, while in atann3-1 mutant seedlings, it was not observed. Further, the eATP-induced asymmetric distribution of PIN2-GFP in root-tip cells or that of PIN3-GFP in hypocotyl cells was reduced in atann3-1 seedlings. Finally, the eATP-induced asymmetric distribution of cytoplasmic vesicles in root-tip cells was impaired in atann3-1 seedlings. Based on these results, we suggest that AtANN3 may be involved in eATP-regulated seedling growth by regulating the distribution of auxin and auxin transporters in vegetative organs.
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Affiliation(s)
| | | | | | | | - Erfang Kang
- Correspondence: (E.K.); (Z.S.); Tel.: +86-(311)-8078-7565 (E.K.); +86-(311)-8078-7570 (Z.S.)
| | - Zhonglin Shang
- Correspondence: (E.K.); (Z.S.); Tel.: +86-(311)-8078-7565 (E.K.); +86-(311)-8078-7570 (Z.S.)
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Aguilera A, Distéfano A, Jauzein C, Correa-Aragunde N, Martinez D, Martin MV, Sueldo DJ. Do photosynthetic cells communicate with each other during cell death? From cyanobacteria to vascular plants. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:7219-7242. [PMID: 36179088 DOI: 10.1093/jxb/erac363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
As in metazoans, life in oxygenic photosynthetic organisms relies on the accurate regulation of cell death. During development and in response to the environment, photosynthetic cells activate and execute cell death pathways that culminate in the death of a specific group of cells, a process known as regulated cell death (RCD). RCD control is instrumental, as its misregulation can lead to growth penalties and even the death of the entire organism. Intracellular molecules released during cell demise may act as 'survival' or 'death' signals and control the propagation of cell death to surrounding cells, even in unicellular organisms. This review explores different signals involved in cell-cell communication and systemic signalling in photosynthetic organisms, in particular Ca2+, reactive oxygen species, lipid derivates, nitric oxide, and eATP. We discuss their possible mode-of-action as either 'survival' or 'death' molecules and their potential role in determining cell fate in neighbouring cells. By comparing the knowledge available across the taxonomic spectrum of this coherent phylogenetic group, from cyanobacteria to vascular plants, we aim at contributing to the identification of conserved mechanisms that control cell death propagation in oxygenic photosynthetic organisms.
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Affiliation(s)
- Anabella Aguilera
- Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, 39231 Kalmar, Sweden
| | - Ayelén Distéfano
- Instituto de Investigaciones Biológicas-CONICET, Universidad Nacional de Mar del Plata, 7600 Mar del Plata, Argentina
| | - Cécile Jauzein
- Ifremer, Centre de Brest, DYNECO-Pelagos, F-29280 Plouzané, France
| | - Natalia Correa-Aragunde
- Instituto de Investigaciones Biológicas-CONICET, Universidad Nacional de Mar del Plata, 7600 Mar del Plata, Argentina
| | - Dana Martinez
- Instituto de Fisiología Vegetal (INFIVE-CONICET), Universidad Nacional de La Plata, 1900 La Plata, Argentina
| | - María Victoria Martin
- Instituto de Investigaciones en Biodiversidad y Biotecnología (INBIOTEC-CONICET), Fundación para Investigaciones Biológicas Aplicadas (FIBA), Universidad Nacional de Mar del Plata,7600 Mar del Plata, Argentina
| | - Daniela J Sueldo
- Norwegian University of Science and Technology, 7491 Trondheim, Norway
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Shan Y, Zhang D, Luo Z, Li T, Qu H, Duan X, Jiang Y. Advances in chilling injury of postharvest fruit and vegetable: Extracellular ATP aspects. Compr Rev Food Sci Food Saf 2022; 21:4251-4273. [PMID: 35876655 DOI: 10.1111/1541-4337.13003] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/03/2022] [Accepted: 06/16/2022] [Indexed: 01/28/2023]
Abstract
Due to the global use of cold chain, the development of postharvest technology to reduce chilling injury (CI) in postharvest fruits and vegetables during storage and transport is needed urgently. Considerable evidence shows that maintaining intracellular adenosine triphosphate (iATP) in harvested fruits and vegetables is beneficial to inhibiting CI occurrence. Extracellular ATP (eATP) is a damage-associated signal molecule and plays an important role in CI of postharvest fruits and vegetables through its receptor and subsequent signal transduction under low-temperature stress. The development of new aptasensors for the simultaneous determination of eATP level allows for better understanding of the roles of eATP in a myriad of responses mediated by low-temperature stress in relation to the chilling tolerance of postharvest fruits and vegetables. The multiple biological functions of eATP and its receptors in postharvest fruits and vegetables were attributed to interactions with reactive oxygen species (ROS) and nitric oxide (NO) in coordination with phytohormones and other signaling molecules via downstream physiological activities. The complicated interconnection among eATP in relation to its receptors, eATP/iATP homeostasis, ROS, NO, and heat shock proteins triggered by eATP recognition has been emphasized. This paper reviews recent advances in the beneficial effects of energy handling, outlines the production and homeostasis of eATP, discusses the possible mechanism of eATP and its receptors in chilling tolerance, and provides future research directions for CI in postharvest fruits and vegetables during low-temperature storage.
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Affiliation(s)
- Youxia Shan
- Guangdong Provincial Key Laboratory of Applied Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Dandan Zhang
- Guangdong Provincial Key Laboratory of Applied Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Zisheng Luo
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - Taotao Li
- Guangdong Provincial Key Laboratory of Applied Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Hongxia Qu
- Guangdong Provincial Key Laboratory of Applied Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Xuewu Duan
- Guangdong Provincial Key Laboratory of Applied Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China
| | - Yueming Jiang
- Guangdong Provincial Key Laboratory of Applied Botany, Core Botanical Gardens, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.,College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, China
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11
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Goodman HL, Kroon JTM, Tomé DFA, Hamilton JMU, Alqarni AO, Chivasa S. Extracellular ATP targets Arabidopsis RIBONUCLEASE 1 to suppress mycotoxin stress-induced cell death. THE NEW PHYTOLOGIST 2022; 235:1531-1542. [PMID: 35524456 PMCID: PMC9545236 DOI: 10.1111/nph.18211] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/29/2022] [Indexed: 06/14/2023]
Abstract
Extracellular ATP is a purinergic signal with important functions in regulating plant growth and stress-adaptive responses, including programmed cell death. While signalling events proximate to receptor activation at the plasma membrane have been characterised, downstream protein targets and the mechanism of cell death activation/regulation are unknown. We designed a proteomic screen to identify ATP-responsive proteins in Arabidopsis cell cultures exposed to mycotoxin stress via fumonisin B1 (FB1) application. Arabidopsis RIBONUCLEASE 1 (RNS1) was identified by the screen, and transgenic plants overexpressing native RNS1 showed greater susceptibility to FB1, while a gene knockout rns1 mutant and antisense RNS1 transgenic plants were resistant to FB1-induced cell death. Native RNS1 complemented rns1 mutants and restored the cell death response to FB1, while a catalytically inactive version of the ribonuclease could not. The FB1 resistance of salicylic acid (SA)-depleted nahG-expressing plants was abolished by transformation with native RNS1, but not the catalytically dead version. The mechanism of FB1-induced cell death is activation of RNS1-dependent RNA cleavage, which is blocked by ATP via RNS1 suppression, or enhanced by SA through induction of RNS1 expression. Our study reveals RNS1 as a previously unknown convergence point of ATP and SA signalling in the regulation of stress-induced cell death.
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Affiliation(s)
| | | | | | | | - Ali O. Alqarni
- Department of BiosciencesDurham UniversitySouth RoadDurhamDH1 3LEUK
| | - Stephen Chivasa
- Department of BiosciencesDurham UniversitySouth RoadDurhamDH1 3LEUK
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Sabharwal T, Lu Z, Slocum RD, Kang S, Wang H, Jiang HW, Veerappa R, Romanovicz D, Nam JC, Birk S, Clark G, Roux SJ. Constitutive expression of a pea apyrase, psNTP9, increases seed yield in field-grown soybean. Sci Rep 2022; 12:10870. [PMID: 35760854 PMCID: PMC9237067 DOI: 10.1038/s41598-022-14821-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 06/13/2022] [Indexed: 12/02/2022] Open
Abstract
To address the demand for food by a rapidly growing human population, agricultural scientists have carried out both plant breeding and genetic engineering research. Previously, we reported that the constitutive expression of a pea apyrase (Nucleoside triphosphate, diphosphohydrolase) gene, psNTP9, under the control of the CaMV35S promoter, resulted in soybean plants with an expanded root system architecture, enhanced drought resistance and increased seed yield when they are grown in greenhouses under controlled conditions. Here, we report that psNTP9-expressing soybean lines also show significantly enhanced seed yields when grown in multiple different field conditions at multiple field sites, including when the gene is introgressed into elite germplasm. The transgenic lines have higher leaf chlorophyll and soluble protein contents and decreased stomatal density and cuticle permeability, traits that increase water use efficiency and likely contribute to the increased seed yields of field-grown plants. These altered properties are explained, in part, by genome-wide gene expression changes induced by the transgene.
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Affiliation(s)
- Tanya Sabharwal
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | | | - Robert D Slocum
- Program in Biological Sciences, Goucher College, Towson, MD, 21204, USA
| | - Seongjoon Kang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Huan Wang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Han-Wei Jiang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Roopadarshini Veerappa
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Dwight Romanovicz
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Ji Chul Nam
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Simon Birk
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Greg Clark
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Stanley J Roux
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX, 78712, USA.
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13
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Yang B, Yang S, Zheng W, Wang Y. Plant immunity inducers: from discovery to agricultural application. STRESS BIOLOGY 2022; 2:5. [PMID: 37676359 PMCID: PMC10442025 DOI: 10.1007/s44154-021-00028-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 12/13/2021] [Indexed: 09/08/2023]
Abstract
While conventional chemical fungicides directly eliminate pathogens, plant immunity inducers activate or prime plant immunity. In recent years, considerable progress has been made in understanding the mechanisms of immune regulation in plants. The development and application of plant immunity inducers based on the principles of plant immunity represent a new field in plant protection research. In this review, we describe the mechanisms of plant immunity inducers in terms of plant immune system activation, summarize the various classes of reported plant immunity inducers (proteins, oligosaccharides, chemicals, and lipids), and review methods for the identification or synthesis of plant immunity inducers. The current situation, new strategies, and future prospects in the development and application of plant immunity inducers are also discussed.
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Affiliation(s)
- Bo Yang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, China
| | - Sen Yang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wenyue Zheng
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yuanchao Wang
- Department of Plant Pathology, Nanjing Agricultural University, Nanjing, 210095, China.
- The Key Laboratory of Plant Immunity, Nanjing Agricultural University, Nanjing, 210095, China.
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14
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Zhang Y, Sun Y, Liu X, Deng J, Yao J, Zhang Y, Deng S, Zhang H, Zhao N, Li J, Zhou X, Zhao R, Chen S. Populus euphratica Apyrases Increase Drought Tolerance by Modulating Stomatal Aperture in Arabidopsis. Int J Mol Sci 2021; 22:ijms22189892. [PMID: 34576057 PMCID: PMC8468604 DOI: 10.3390/ijms22189892] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 11/16/2022] Open
Abstract
Stomatal regulation is crucial to reduce water consumption under drought conditions. Extracellular ATP (eATP) serves as a signaling agent in stomatal regulation; however, it is less known whether the eATP mediation of stomatal aperture is linked to apyrases (APYs), the principal enzymes that control the concentration of eATP. To clarify the role of APYs in stomatal control, PeAPY1 and PeAPY2 were isolated from Populus euphratica and transferred into Arabidopsis. Compared with the wild-type Arabidopsis and loss-of-function mutants (Atapy1 and Atapy2), PeAPY1- and PeAPY2-transgenic plants decreased stomatal aperture under mannitol treatment (200 mM, 2 h) and reduced water loss during air exposure (90 min). The role of apyrase in stomatal regulation resulted from its control in eATP-regulated stomatal movements and increased stomatal sensitivity to ABA. The bi-phasic dose-responses to applied nucleotides, i.e., the low ATP (0.3-1.0 mM)-promoted opening and high ATP (>2.0 mM)-promoted closure, were both restricted by P. euphratica apyrases. It is noteworthy that eATP at a low concentration (0.3 mM) counteracted ABA action in the regulation of stomatal aperture, while overexpression of PeAPY1 or PeAPY2 effectively diminished eATP promotion in opening, and consequently enhanced ABA action in closure. We postulate a speculative model of apyrase signaling in eATP- and ABA-regulated stomatal movements under drought.
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Affiliation(s)
- Yanli Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Yuanling Sun
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Xiaojing Liu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Jiayin Deng
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Jun Yao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Yinan Zhang
- Forestry Institute of New Technology, Chinese Academy of Forestry, Beijing 100091, China;
| | - Shurong Deng
- State Key Laboratory of Tree Genetics and Breeding, The Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China;
| | - Huilong Zhang
- Research Center of Saline and Alkali Land of National Forestry and Grassland Administration, Chinese Academy of Forestry, Beijing 100091, China;
| | - Nan Zhao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Jinke Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Xiaoyang Zhou
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Rui Zhao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
| | - Shaoliang Chen
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China; (Y.Z.); (Y.S.); (X.L.); (J.D.); (J.Y.); (N.Z.); (J.L.); (X.Z.); (R.Z.)
- Correspondence: ; Tel.: +86-10-6233-8129
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15
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P2K1 Receptor, Heterotrimeric Gα Protein and CNGC2/4 Are Involved in Extracellular ATP-Promoted Ion Influx in the Pollen of Arabidopsis thaliana. PLANTS 2021; 10:plants10081743. [PMID: 34451790 PMCID: PMC8400636 DOI: 10.3390/plants10081743] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 08/20/2021] [Accepted: 08/20/2021] [Indexed: 11/17/2022]
Abstract
As an apoplastic signal, extracellular ATP (eATP) is involved in plant growth and development. eATP promotes tobacco pollen germination (PG) and pollen tube growth (PTG) by stimulating Ca2+ or K+ absorption. Nevertheless, the mechanisms underlying eATP-stimulated ion uptake and their role in PG and PTG are still unclear. Here, ATP addition was found to modulate PG and PTG in 34 plant species and showed a promoting effect in most of these species. Furthermore, by using Arabidopsis thaliana as a model, the role of several signaling components involved in eATP-promoted ion (Ca2+, K+) uptake, PG, and PTG were investigated. ATP stimulated while apyrase inhibited PG and PTG. Patch-clamping results showed that ATP promoted K+ and Ca2+ influx into pollen protoplasts. In loss-of-function mutants of P2K1 (dorn1-1 and dorn1-3), heterotrimeric G protein α subunit (gpa1-1, gpa1-2), or cyclic nucleotide gated ion channel (cngc2, cngc4), eATP-stimulated PG, PTG, and ion influx were all impaired. Our results suggest that these signaling components may be involved in eATP-promoted PG and PTG by regulating Ca2+ or K+ influx in Arabidopsis pollen grains.
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16
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Smith SJ, Goodman H, Kroon JTM, Brown AP, Simon WJ, Chivasa S. Isolation of Arabidopsis extracellular ATP binding proteins by affinity proteomics and identification of PHOSPHOLIPASE C-LIKE 1 as an extracellular protein essential for fumonisin B1 toxicity. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2021; 106:1387-1400. [PMID: 33735457 DOI: 10.1111/tpj.15243] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 02/18/2021] [Accepted: 03/08/2021] [Indexed: 05/21/2023]
Abstract
ATP is secreted to the extracellular matrix, where it activates plasma membrane receptors for controlling plant growth and stress-adaptive processes. DOES NOT RESPOND TO NUCLEOTIDES 1 (DORN1), was the first plant ATP receptor to be identified but key downstream proteins remain sought after. Here, we identified 120 proteins secreted by Arabidopsis cell cultures and screened them for putative stress-responsive proteins using ATP-affinity purification. We report three Arabidopsis proteins isolated by ATP-affinity: PEROXIDASE 52, SUBTILASE-LIKE SERINE PROTEASE 1.7 and PHOSPHOLIPASE C-LIKE 1. In wild-type Arabidopsis, the expression of genes encoding all three proteins responded to fumonisin B1, a cell death-activating mycotoxin. The expression of PEROXIDASE 52 and PHOSPHOLIPASE C-LIKE 1 was altered in fumonisin B1-resistant salicylic acid induction-deficient (sid2) mutants. Exposure to fumonisin B1 suppressed PHOSPHOLIPASE C-LIKE 1 expression in sid2 mutants, suggesting that the inactivation of this gene might provide mycotoxin tolerance. Accordingly, gene knockout mutants of PHOSPHOLIPASE C-LIKE 1 were resistant to fumonisin B1-induced death. The activation of PHOSPHOLIPASE C-LIKE 1 gene expression by exogenous ATP was not blocked in dorn1 loss-of-function mutants, indicating that DORN1 is not required. Furthermore, exogenous ATP rescued both the wild type and the dorn1 mutants from fumonisin-B1 toxicity, suggesting that different ATP receptor(s) are operational in this process. Our results point to the existence of additional plant ATP receptor(s) and provide crucial downstream targets for use in designing screens to identify these receptors. Finally, PHOSPHOLIPASE C-LIKE 1 serves as a convergence point for fumonisin B1 and extracellular ATP signalling, and functions in the Arabidopsis stress response to fumonisin B1.
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Affiliation(s)
- Sarah J Smith
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Heather Goodman
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Johan T M Kroon
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Adrian P Brown
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - William J Simon
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Stephen Chivasa
- Department of Biosciences, Durham University, Durham, DH1 3LE, UK
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17
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Liu H, Xue S. Interplay between hydrogen sulfide and other signaling molecules in the regulation of guard cell signaling and abiotic/biotic stress response. PLANT COMMUNICATIONS 2021; 2:100179. [PMID: 34027393 PMCID: PMC8132131 DOI: 10.1016/j.xplc.2021.100179] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/24/2021] [Accepted: 03/10/2021] [Indexed: 05/05/2023]
Abstract
Stomatal aperture controls the balance between transpirational water loss and photosynthetic carbon dioxide (CO2) uptake. Stomata are surrounded by pairs of guard cells that sense and transduce environmental or stress signals to induce diverse endogenous responses for adaptation to environmental changes. In a recent decade, hydrogen sulfide (H2S) has been recognized as a signaling molecule that regulates stomatal movement. In this review, we summarize recent progress in research on the regulatory role of H2S in stomatal movement, including the dynamic regulation of phytohormones, ion homeostasis, and cell structural components. We focus especially on the cross talk among H2S, nitric oxide (NO), and hydrogen peroxide (H2O2) in guard cells, as well as on H2S-mediated post-translational protein modification (cysteine thiol persulfidation). Finally, we summarize the mechanisms by which H2S interacts with other signaling molecules in plants under abiotic or biotic stress. Based on evidence and clues from existing research, we propose some issues that need to be addressed in the future.
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Affiliation(s)
- Hai Liu
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shaowu Xue
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
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18
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Clark G, Brown KA, Tripathy MK, Roux SJ. Recent Advances Clarifying the Structure and Function of Plant Apyrases (Nucleoside Triphosphate Diphosphohydrolases). Int J Mol Sci 2021; 22:ijms22063283. [PMID: 33807069 PMCID: PMC8004787 DOI: 10.3390/ijms22063283] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 03/18/2021] [Accepted: 03/20/2021] [Indexed: 01/22/2023] Open
Abstract
Studies implicating an important role for apyrase (NTPDase) enzymes in plant growth and development began appearing in the literature more than three decades ago. After early studies primarily in potato, Arabidopsis and legumes, especially important discoveries that advanced an understanding of the biochemistry, structure and function of these enzymes have been published in the last half-dozen years, revealing that they carry out key functions in diverse other plants. These recent discoveries about plant apyrases include, among others, novel findings on its crystal structures, its biochemistry, its roles in plant stress responses and its induction of major changes in gene expression when its expression is suppressed or enhanced. This review will describe and discuss these recent advances and the major questions about plant apyrases that remain unanswered.
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Affiliation(s)
- Greg Clark
- Department of Molecular Biosciences, University of Texas, Austin, TX 78712, USA; (G.C.); (K.A.B.)
| | - Katherine A. Brown
- Department of Molecular Biosciences, University of Texas, Austin, TX 78712, USA; (G.C.); (K.A.B.)
- Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE, UK
| | | | - Stanley J. Roux
- Department of Molecular Biosciences, University of Texas, Austin, TX 78712, USA; (G.C.); (K.A.B.)
- Correspondence: ; Tel.: +1-512-471-4238
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19
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Yang J, Li C, Kong D, Guo F, Wei H. Light-Mediated Signaling and Metabolic Changes Coordinate Stomatal Opening and Closure. FRONTIERS IN PLANT SCIENCE 2020; 11:601478. [PMID: 33343603 PMCID: PMC7746640 DOI: 10.3389/fpls.2020.601478] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/11/2020] [Indexed: 06/10/2023]
Abstract
Stomata are valves on the leaf surface controlling carbon dioxide (CO2) influx for photosynthesis and water loss by transpiration. Thus, plants have to evolve elaborate mechanisms controlling stomatal aperture to allow efficient photosynthesis while avoid excessive water loss. Light is not only the energy source for photosynthesis but also an important signal regulating stomatal movement during dark-to-light transition. Our knowledge concerning blue and red light signaling and light-induced metabolite changes that contribute to stomatal opening are accumulating. This review summarizes recent advances on the signaling components that lie between the perception of blue/red light and activation of the PM H+-ATPases, and on the negative regulation of stomatal opening by red light-activated phyB signaling and ultraviolet (UV-B and UV-A) irradiation. Besides, light-regulated guard cell (GC)-specific metabolic levels, mesophyll-derived sucrose, and CO2 concentration within GCs also play dual roles in stomatal opening. Thus, light-induced stomatal opening is tightly accompanied by brake mechanisms, allowing plants to coordinate carbon gain and water loss. Knowledge on the mechanisms regulating the trade-off between stomatal opening and closure may have potential applications toward generating superior crops with improved water use efficiency (CO2 gain vs. water loss).
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Affiliation(s)
- Juan Yang
- College of Life Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Chunlian Li
- College of Life Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Dexin Kong
- College of Life Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Fangyan Guo
- College of Life Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
| | - Hongbin Wei
- College of Life Sciences, State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, China
- School of Life Sciences, Southwest University, Chongqing, China
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20
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Nazir F, Fariduddin Q, Khan TA. Hydrogen peroxide as a signalling molecule in plants and its crosstalk with other plant growth regulators under heavy metal stress. CHEMOSPHERE 2020; 252:126486. [PMID: 32234629 DOI: 10.1016/j.chemosphere.2020.126486] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/29/2020] [Accepted: 03/12/2020] [Indexed: 05/03/2023]
Abstract
Hydrogen peroxide (H2O2) acts as a significant regulatory component interrelated with signal transduction in plants. The positive role of H2O2 in plants subjected to myriad of abiotic factors has led us to comprehend that it is not only a free radical, generated as a product of oxidative stress, but also helpful in the maintenance of cellular homeostasis in crop plants. Studies over the last two centuries has indicated that H2O2 is a key molecule which regulate photosynthesis, stomatal movement, pollen growth, fruit and flower development and leaf senescence. Exogenously-sourced H2O2 at nanomolar levels functions as a signalling molecule, facilitates seed germination, chlorophyll content, stomatal opening, and delays senescence, while at elevated levels, it triggers oxidative burst to organic molecules, which could lead to cell death. Furthermore, H2O2 is also known to interplay synergistically or antagonistically with other plant growth regulators such as auxins, gibberellins, cytokinins, abscisic acid, jasmonic acid, ethylene and salicylic acid, nitric oxide and Ca2+ (as signalling molecules), and brassinosteroids (steroidal PGRs) under myriad of environmental stresses and thus, mediate plant growth and development and reactions to abiotic factors. The purpose of this review is to specify accessible knowledge on the role and dynamic mechanisms of H2O2 in mediating growth responses and plant resilience to HM stresses, and its crosstalk with other significant PGRs in controlling various processes. More recently, signal transduction by mitogen activated protein kinases and other transcription factors which attenuate HM stresses in plants have also been dissected.
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Affiliation(s)
- Faroza Nazir
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Qazi Fariduddin
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India.
| | - Tanveer Alam Khan
- Department of Plant Physiology and Cell Biology, Leibniz Institute of Plant Genetics and Crop Plant Research, Corrensstraße 3, D-06466, Gatersleben, Germany
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21
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Li Q, Wang C, Mou Z. Perception of Damaged Self in Plants. PLANT PHYSIOLOGY 2020; 182:1545-1565. [PMID: 31907298 PMCID: PMC7140957 DOI: 10.1104/pp.19.01242] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 12/16/2019] [Indexed: 05/04/2023]
Abstract
Plants use specific receptor proteins on the cell surface to detect host-derived danger signals released in response to attacks by pathogens or herbivores and activate immune responses against them.
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Affiliation(s)
- Qi Li
- Department of Microbiology and Cell Science, University of Florida, Gainesville, Florida 32611
| | - Chenggang Wang
- Department of Microbiology and Cell Science, University of Florida, Gainesville, Florida 32611
| | - Zhonglin Mou
- Department of Microbiology and Cell Science, University of Florida, Gainesville, Florida 32611
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22
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Hu CH, Wang PQ, Zhang PP, Nie XM, Li BB, Tai L, Liu WT, Li WQ, Chen KM. NADPH Oxidases: The Vital Performers and Center Hubs during Plant Growth and Signaling. Cells 2020; 9:E437. [PMID: 32069961 PMCID: PMC7072856 DOI: 10.3390/cells9020437] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/08/2020] [Accepted: 02/10/2020] [Indexed: 12/14/2022] Open
Abstract
NADPH oxidases (NOXs), mostly known as respiratory burst oxidase homologs (RBOHs), are the key producers of reactive oxygen species (ROS) in plants. A lot of literature has addressed ROS signaling in plant development regulation and stress responses as well as on the enzyme's structure, evolution, function, regulation and associated mechanisms, manifesting the role of NOXs/RBOHs as the vital performers and center hubs during plant growth and signaling. This review focuses on recent advances of NOXs/RBOHs on cell growth, hormone interaction, calcium signaling, abiotic stress responses, and immunity. Several primary particles, including Ca2+, CDPKs, BIK1, ROPs/RACs, CERK, FER, ANX, SnRK and SIK1-mediated regulatory mechanisms, are fully summarized to illustrate the signaling behavior of NOXs/RBOHs and their sophisticated and dexterous crosstalks. Diverse expression and activation regulation models endow NOXs/RBOHs powerful and versatile functions in plants to maintain innate immune homeostasis and development integrity. NOXs/RBOHs and their related regulatory items are the ideal targets for crop improvement in both yield and quality during agricultural practices.
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Affiliation(s)
- Chun-Hong Hu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
- College of Life Science and Agronomy, Zhoukou Normal University, Zhoukou 466000, Henan, China
| | - Peng-Qi Wang
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Peng-Peng Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiu-Min Nie
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Bin-Bin Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Li Tai
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wen-Ting Liu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Wen-Qiang Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Kun-Ming Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, Shaanxi, China
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23
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Pietrowska-Borek M, Dobrogojski J, Sobieszczuk-Nowicka E, Borek S. New Insight into Plant Signaling: Extracellular ATP and Uncommon Nucleotides. Cells 2020; 9:E345. [PMID: 32024306 PMCID: PMC7072326 DOI: 10.3390/cells9020345] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 01/27/2020] [Accepted: 01/30/2020] [Indexed: 12/15/2022] Open
Abstract
New players in plant signaling are described in detail in this review: extracellular ATP (eATP) and uncommon nucleotides such as dinucleoside polyphosphates (NpnN's), adenosine 5'-phosphoramidate (NH2-pA), and extracellular NAD+ and NADP+ (eNAD(P)+). Recent molecular, physiological, and biochemical evidence implicating concurrently the signaling role of eATP, NpnN's, and NH2-pA in plant biology and the mechanistic events in which they are involved are discussed. Numerous studies have shown that they are often universal signaling messengers, which trigger a signaling cascade in similar reactions and processes among different kingdoms. We also present here, not described elsewhere, a working model of the NpnN' and NH2-pA signaling network in a plant cell where these nucleotides trigger induction of the phenylpropanoid and the isochorismic acid pathways yielding metabolites protecting the plant against various types of stresses. Through these signals, the plant responds to environmental stimuli by intensifying the production of various compounds, such as anthocyanins, lignin, stilbenes, and salicylic acid. Still, more research needs to be performed to identify signaling networks that involve uncommon nucleotides, followed by omic experiments to define network elements and processes that are controlled by these signals.
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Affiliation(s)
- Małgorzata Pietrowska-Borek
- Department of Biochemistry and Biotechnology, Faculty of Agronomy and Bioengineering, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland;
| | - Jędrzej Dobrogojski
- Department of Biochemistry and Biotechnology, Faculty of Agronomy and Bioengineering, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland;
| | - Ewa Sobieszczuk-Nowicka
- Department of Plant Physiology, Faculty of Biology, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (E.S.-N.); (S.B.)
| | - Sławomir Borek
- Department of Plant Physiology, Faculty of Biology, Adam Mickiewicz University, Poznań, Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland; (E.S.-N.); (S.B.)
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Matthus E, Sun J, Wang L, Bhat MG, Mohammad-Sidik AB, Wilkins KA, Leblanc-Fournier N, Legué V, Moulia B, Stacey G, Davies JM. DORN1/P2K1 and purino-calcium signalling in plants: making waves with extracellular ATP. ANNALS OF BOTANY 2020; 124:1227-1242. [PMID: 31904093 PMCID: PMC6943698 DOI: 10.1093/aob/mcz135] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Indexed: 05/03/2023]
Abstract
BACKGROUND AND AIMS Extracellular ATP governs a range of plant functions, including cell viability, adaptation and cross-kingdom interactions. Key functions of extracellular ATP in leaves and roots may involve an increase in cytosolic free calcium as a second messenger ('calcium signature'). The main aim here was to determine to what extent leaf and root calcium responses require the DORN1/P2K1 extracellular ATP receptor in Arabidopsis thaliana. The second aim was to test whether extracellular ATP can generate a calcium wave in the root. METHODS Leaf and root responses to extracellular ATP were reviewed for their possible links to calcium signalling and DORN1/P2K1. Leaves and roots of wild type and dorn1 plants were tested for cytosolic calcium increase in response to ATP, using aequorin. The spatial abundance of DORN1/P2K1 in the root was estimated using green fluorescent protein. Wild type roots expressing GCaMP3 were used to determine the spatial variation of cytosolic calcium increase in response to extracellular ATP. KEY RESULTS Leaf and root ATP-induced calcium signatures differed markedly. The leaf signature was only partially dependent on DORN1/P2K1, while the root signature was fully dependent. The distribution of DORN1/P2K1 in the root supports a key role in the generation of the apical calcium signature. Root apical and sub-apical calcium signatures may operate independently of each other but an apical calcium increase can drive a sub-apical increase, consistent with a calcium wave. CONCLUSION DORN1 could underpin several calcium-related responses but it may not be the only receptor for extracellular ATP in Arabidopsis. The root has the capacity for a calcium wave, triggered by extracellular ATP at the apex.
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Affiliation(s)
- Elsa Matthus
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Jian Sun
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
- Institute of Integrative Plant Biology, School of Life Science, Jiangsu Normal University, Xuzhou, China
| | - Limin Wang
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | - Madhura G Bhat
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | | | - Katie A Wilkins
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
| | | | - Valérie Legué
- Université Clermont Auvergne, INRA, PIAF, Clermont-Ferrand, France
| | - Bruno Moulia
- Université Clermont Auvergne, INRA, PIAF, Clermont-Ferrand, France
| | - Gary Stacey
- Divisions of Plant Science and Biochemistry, University of Missouri, Columbia, MO, USA
| | - Julia M Davies
- Department of Plant Sciences, University of Cambridge, Cambridge, UK
- For correspondence. E-mail
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Nazir F, Hussain A, Fariduddin Q. Hydrogen peroxide modulate photosynthesis and antioxidant systems in tomato (Solanum lycopersicum L.) plants under copper stress. CHEMOSPHERE 2019; 230:544-558. [PMID: 31125883 DOI: 10.1016/j.chemosphere.2019.05.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Revised: 04/09/2019] [Accepted: 05/01/2019] [Indexed: 05/23/2023]
Abstract
Plant growth and development could be modulated by minute concentrations of hydrogen peroxide (H2O2) which serves as a signaling molecule for various processes. The present work was conducted with an aim that H2O2 could also modify root morphology, morphology and movement of stomata, photosynthetic responses, activity of carbonic anhydrase, and antioxidant systems in tomato (Solanum lycopersicum L.) plants under copper stress (Cu; 10 or 100 mg kg-1 soil). Roots of 20 d old plants were dipped in 0.1 or 0.5 mM of H2O2 solution for 4 h and then transplanted to the soil filled in earthen pots. High Cu stress (100 mg kg-1 soil) altered root morphology, reduced chlorophyll content and photosynthetic capacity and also affected movement of stomata and generation of antioxidant species at 40 d after transplantation. Further, root dipping treatment of H2O2 to plants under stress and stress-free conditions enhanced accumulation of proline and activity of catalase, peroxidase, and superoxide dismutase, whereas production of superoxide radical (O2•¯) and H2O2 were decreased. Overall, H2O2 treatment improved growth, photosynthesis, metabolic state of the plants which provided tolerance and helped the plants to cope well under Cu stress.
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Affiliation(s)
- Faroza Nazir
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Anjuman Hussain
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Qazi Fariduddin
- Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India.
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Protein Changes in Response to Lead Stress of Lead-Tolerant and Lead-Sensitive Industrial Hemp Using SWATH Technology. Genes (Basel) 2019; 10:genes10050396. [PMID: 31121980 PMCID: PMC6562531 DOI: 10.3390/genes10050396] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 05/20/2019] [Indexed: 11/17/2022] Open
Abstract
Hemp is a Pb-tolerant and Pb-accumulating plant and the study of its tolerance mechanisms could facilitate the breeding of hemp with enhanced Pb tolerance and accumulation. In the present study, we took advantage of sequential window acquisition of all theoretical mass spectra (SWATH) technology to study the difference in proteomics between the leaves of Pb-tolerant seed-type hemp variety Bamahuoma (BM) and the Pb-sensitive fiber-type hemp variety Yunma 1 (Y1) under Pb stress (3 g/kg soil). A total of 63 and 372 proteins differentially expressed under Pb stress relative to control conditions were identified with liquid chromatography electro spray ionization tandem mass spectrometry in BM and Y1, respectively; with each of these proteins being classified into 14 categories. Hemp adapted to Pb stress by: accelerating adenosine triphosphate (ATP) metabolism; enhancing respiration, light absorption and light energy transfer; promoting assimilation of intercellular nitrogen (N) and carbon (C); eliminating reactive oxygen species; regulating stomatal development and closure; improving exchange of water and CO2 in leaves; promoting intercellular transport; preventing aggregation of unfolded proteins; degrading misfolded proteins; and increasing the transmembrane transport of ATP in chloroplasts. Our results provide an important reference protein and gene information for future molecular studies into the resistance and accumulation of Pb in hemp.
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Wang L, Stacey G, Leblanc-Fournier N, Legué V, Moulia B, Davies JM. Early Extracellular ATP Signaling in Arabidopsis Root Epidermis: A Multi-Conductance Process. FRONTIERS IN PLANT SCIENCE 2019; 10:1064. [PMID: 31552068 PMCID: PMC6737080 DOI: 10.3389/fpls.2019.01064] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 08/06/2019] [Indexed: 05/13/2023]
Abstract
Adenosine 5'-triphosphate (ATP) is an important extracellular signaling agent, operating in growth regulation, stomatal conductance, and wound response. With the first receptor for extracellular ATP now identified in plants (P2K1/DORN1) and a plasma membrane NADPH oxidase revealed as its target, the search continues for the components of the signaling cascades they command. The Arabidopsis root elongation zone epidermal plasma membrane has recently been shown to contain cation transport pathways (channel conductances) that operate downstream of P2K1 and could contribute to extracellular ATP (eATP) signaling. Here, patch clamp electrophysiology has been used to delineate two further conductances from the root elongation zone epidermal plasma membrane that respond to eATP, including one that would permit chloride transport. This perspective addresses how these conductances compare to those previously characterized in roots and how they might operate together to enable early events in eATP signaling, including elevation of cytosolic-free calcium as a second messenger. The role of the reactive oxygen species (ROS) that could arise from eATP's activation of NADPH oxidases is considered in a qualitative model that also considers the regulation of plasma membrane potential by the concerted action of the various cation and anion conductances. The molecular identities of the channel conductances in eATP signaling remain enigmatic but may yet be found in the multigene families of glutamate receptor-like channels, cyclic nucleotide-gated channels, annexins, and aluminum-activated malate transporters.
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Affiliation(s)
- Limin Wang
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
| | - Gary Stacey
- Divisions of Plant Science and Biochemistry, University of Missouri, Columbia, MO, United States
| | | | - Valérie Legué
- Université Clermont Auvergne, INRA, PIAF, Clermont-Ferrand, France
| | - Bruno Moulia
- Université Clermont Auvergne, INRA, PIAF, Clermont-Ferrand, France
| | - Julia M. Davies
- Department of Plant Sciences, University of Cambridge, Cambridge, United Kingdom
- *Correspondence: Julia M. Davies,
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Veerappa R, Slocum RD, Siegenthaler A, Wang J, Clark G, Roux SJ. Ectopic expression of a pea apyrase enhances root system architecture and drought survival in Arabidopsis and soybean. PLANT, CELL & ENVIRONMENT 2019; 42:337-353. [PMID: 30132918 DOI: 10.1111/pce.13425] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 08/13/2018] [Indexed: 05/27/2023]
Abstract
Ectoapyrases (ecto-NTPDases) function to decrease levels of extracellular ATP and ADP in animals and plants. Prior studies showed that ectopic expression of a pea ectoapyrase, psNTP9, enhanced growth in Arabidopsis seedlings and that the overexpression of the two Arabidopsis apyrases most closely related to psNTP9 enhanced auxin transport and growth in Arabidopsis. These results predicted that ectopic expression of psNTP9 could promote a more extensive root system architecture (RSA) in Arabidopsis. We confirmed that transgenic Arabidopsis seedlings had longer primary roots, more lateral roots, and more and longer root hairs than wild-type plants. Because RSA influences water uptake, we tested whether the transgenic plants could tolerate osmotic stress and water deprivation better than wild-type plants, and we confirmed these properties. Transcriptomic analyses revealed gene expression changes in the transgenic plants that helped account for their enhanced RSA and improved drought tolerance. The effects of psNTP9 were not restricted to Arabidopsis, because its expression in soybeans improved the RSA, growth, and seed yield of this crop and supported higher survival in response to drought. Our results indicate that in both Arabidopsis and soybeans, the constitutive expression of psNTP9 results in a more extensive RSA and improved survival in drought stress conditions.
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Affiliation(s)
| | - Robert D Slocum
- Department of Biological Sciences, Goucher College, Towson, Maryland
| | | | - Jing Wang
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas
| | - Greg Clark
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas
| | - Stanley J Roux
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, Texas
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Wu Y, Qin B, Feng K, Yan R, Kang E, Liu T, Shang Z. Extracellular ATP promoted pollen germination and tube growth of Nicotiana tabacum through promoting K + and Ca 2+ absorption. PLANT REPRODUCTION 2018; 31:399-410. [PMID: 29934740 DOI: 10.1007/s00497-018-0341-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 06/15/2018] [Indexed: 05/15/2023]
Abstract
Extracellular ATP (eATP) plays an essential role in plant growth, development, and stress tolerance. Here, we report that eATP participated in Nicotiana tabacum pollen germination (PG) and pollen tube growth (PTG) by regulating K+ and Ca2+ influx. Exogenous ATP or ADP effectively promoted PG and PTG in a dose-dependent manner; weakly hydrolysable ATP analog (ATPγS) showed a similar effect. AMP, adenosine, adenine, and phosphate did not affect PG or PTG. Within a certain range, higher concentrations of K+ or Ca2+ in the medium increased the effect of ATP in promoting PG and PTG. However, in mediums containing K+ or Ca2+ concentrations above this range, the effect of ATP was reversed, resulting in PG and PTG inhibition. Ca2+ chelators (EGTA), Ca2+ channel blockers, and K+ channel blockers suppressed ATP-promoted PG and PTG. Results from a patch clamp showed that ATP activated a K+ and Ca2+ influx in pollen protoplasts. These results suggest that, as an apoplastic signal, eATP may be involved in PG and PTG via regulating Ca2+ and K+ absorption.
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Affiliation(s)
- Yansheng Wu
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
- Department of Chemistry Engineering and Biological Technology, Xingtai University, Xingtai, 054001, Hebei, China
| | - Baozhi Qin
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Kaili Feng
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Ruolin Yan
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Erfang Kang
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Ting Liu
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Zhonglin Shang
- Hebei Key Laboratory of Molecular and Cellular Biology, Key Laboratory of Molecular and Cellular Biology of the Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China.
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30
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Clark G, Roux SJ. Role of Ca 2+ in Mediating Plant Responses to Extracellular ATP and ADP. Int J Mol Sci 2018; 19:E3590. [PMID: 30441766 PMCID: PMC6274673 DOI: 10.3390/ijms19113590] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 11/08/2018] [Indexed: 12/30/2022] Open
Abstract
Among the most recently discovered chemical regulators of plant growth and development are extracellular nucleotides, especially extracellular ATP (eATP) and extracellular ADP (eADP). Plant cells release ATP into their extracellular matrix under a variety of different circumstances, and this eATP can then function as an agonist that binds to a specific receptor and induces signaling changes, the earliest of which is an increase in the concentration of cytosolic calcium ([Ca2+]cyt). This initial change is then amplified into downstream-signaling changes that include increased levels of reactive oxygen species and nitric oxide, which ultimately lead to major changes in the growth rate, defense responses, and leaf stomatal apertures of plants. This review presents and discusses the evidence that links receptor activation to increased [Ca2+]cyt and, ultimately, to growth and diverse adaptive changes in plant development. It also discusses the evidence that increased [Ca2+]cyt also enhances the activity of apyrase (nucleoside triphosphate diphosphohydrolase) enzymes that function in multiple subcellular locales to hydrolyze ATP and ADP, and thus limit or terminate the effects of these potent regulators.
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Affiliation(s)
- Greg Clark
- Department of Molecular Biosciences, University of Texas, Austin, TX 78712, USA.
| | - Stanley J Roux
- Department of Molecular Biosciences, University of Texas, Austin, TX 78712, USA.
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Wei J, Li DX, Zhang JR, Shan C, Rengel Z, Song ZB, Chen Q. Phytomelatonin receptor PMTR1-mediated signaling regulates stomatal closure in Arabidopsis thaliana. J Pineal Res 2018; 65:e12500. [PMID: 29702752 DOI: 10.1111/jpi.12500] [Citation(s) in RCA: 205] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 03/30/2018] [Indexed: 12/12/2022]
Abstract
Melatonin has been detected in plants in 1995; however, the function and signaling pathway of this putative phytohormone are largely undetermined due to a lack of knowledge about its receptor. Here, we discovered the first phytomelatonin receptor (CAND2/PMTR1) in Arabidopsis thaliana and found that melatonin governs the receptor-dependent stomatal closure. The application of melatonin induced stomatal closure through the heterotrimeric G protein α subunit-regulated H2 O2 and Ca2+ signals. The Arabidopsis mutant lines lacking AtCand2 that encodes a candidate G protein-coupled receptor were insensitive to melatonin-induced stomatal closure. Accordingly, the melatonin-induced H2 O2 production and Ca2+ influx were completely abolished in cand2. CAND2 is a membrane protein that interacts with GPA1 and the expression of AtCand2 was tightly regulated by melatonin in various organs and guard cells. CAND2 showed saturable and specific 125 I-melatonin binding, with apparent Kd (dissociation constant) of 0.73 ± 0.10 nmol/L (r2 = .99), demonstrating this protein is a phytomelatonin receptor (PMTR1). Our results suggest that the phytomelatonin regulation of stomatal closure is dependent on its receptor CAND2/PMTR1-mediated H2 O2 and Ca2+ signaling transduction cascade.
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Affiliation(s)
- Jian Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Dong-Xu Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Jia-Rong Zhang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
| | - Chi Shan
- Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Zed Rengel
- Faculty of Science, UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA, Australia
| | - Zhong-Bang Song
- Tobacco Breeding Center, Yunnan Academy of Tobacco Agricultural Sciences, Kunming, Yunnan, China
| | - Qi Chen
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, China
- Faculty of Science, UWA School of Agriculture and Environment, The University of Western Australia, Perth, WA, Australia
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Molecular Mechanism of Plant Recognition of Extracellular ATP. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1051:233-253. [PMID: 29064066 DOI: 10.1007/5584_2017_110] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Adenosine 5'-triphosphate (ATP), a ubiquitously dispersed biomolecule, is not only a major source of biochemical energy for living cells, but also acts as a critical signaling molecule through inter-cellular communication. Recent studies have clearly shown that extracellular ATP is involved in various physiological processes in plants, including root growth, stomata movement, pollen tube development, gravitropism, and abiotic/biotic stress responses. The first plant purinergic receptor for extracellular ATP, DORN1 (the founding member of the P2K family of purinergic receptors), was identified in Arabidopsis thaliana by a forward genetic screen. DORN1 consists of an extracellular lectin domain, transmembrane domain, and serine/threonine kinase, intracellular domain. The predicted structure of the DORN1 extracellular domain revealed putative key ATP binding residues but an apparent lack of sugar binding. In this chapter, we summarize recent studies on the molecular mechanism of plant recognition of extracellular ATP with specific reference to the role of DORN1.
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Tripathi D, Zhang T, Koo AJ, Stacey G, Tanaka K. Extracellular ATP Acts on Jasmonate Signaling to Reinforce Plant Defense. PLANT PHYSIOLOGY 2018; 176:511-523. [PMID: 29180381 PMCID: PMC6108377 DOI: 10.1104/pp.17.01477] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 11/22/2017] [Indexed: 05/20/2023]
Abstract
Damaged cells send various signals to stimulate defense responses. Recent identification and genetic studies of the plant purinoceptor, P2K1 (also known as DORN1), have demonstrated that extracellular ATP is a signal involved in plant stress responses, including wounding, perhaps to evoke plant defense. However, it remains largely unknown how extracellular ATP induces plant defense responses. Here, we demonstrate that extracellular ATP induces plant defense mediated through activation of the intracellular signaling of jasmonate (JA), a well-characterized defense hormone. In Arabidopsis (Arabidopsis thaliana) leaves, ATP pretreatment induced resistance against the necrotrophic fungus, Botrytis cinerea The induced resistance was enhanced in the P2K1 receptor overexpression line, but reduced in the receptor mutant, dorn1-3 Mining the transcriptome data revealed that ATP induces a set of JA-induced genes. In addition, the P2K1-associated coexpression network contains defense-related genes, including those encoding jasmonate ZIM-domain (JAZ) proteins, which play key roles as repressors of JA signaling. We examined whether extracellular ATP impacts the stability of JAZ1 in Arabidopsis. The results showed that the JAZ1 stability decreased in response to ATP addition in a proteasome-dependent manner. This reduction required intracellular signaling via second messengers-cytosolic calcium, reactive oxygen species, and nitric oxide. Interestingly, the ATP-induced JAZ1 degradation was attenuated in the JA receptor mutant, coi1, but not in the JA biosynthesis mutant, aos, or upon addition of JA biosynthesis inhibitors. Immunoprecipitation analysis demonstrated that ATP increases the interaction between COI1 and JAZ1, suggesting direct cross talk between extracellular ATP and JA in intracellular signaling events. Taken together, these results suggest that extracellular ATP signaling directly impacts the JA signaling pathway to maximize plant defense responses.
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Affiliation(s)
- Diwaker Tripathi
- Department of Plant Pathology, Washington State University, Pullman, Washington 99164
| | - Tong Zhang
- Divisions of Plant Sciences and Biochemistry, University of Missouri, Columbia, Missouri 65211
| | - Abraham J Koo
- Divisions of Plant Sciences and Biochemistry, University of Missouri, Columbia, Missouri 65211
| | - Gary Stacey
- Divisions of Plant Sciences and Biochemistry, University of Missouri, Columbia, Missouri 65211
| | - Kiwamu Tanaka
- Department of Plant Pathology, Washington State University, Pullman, Washington 99164
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Extracellular ATP elicits DORN1-mediated RBOHD phosphorylation to regulate stomatal aperture. Nat Commun 2017; 8:2265. [PMID: 29273780 PMCID: PMC5741621 DOI: 10.1038/s41467-017-02340-3] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Accepted: 11/21/2017] [Indexed: 02/05/2023] Open
Abstract
In addition to acting as a cellular energy source, ATP can also act as a damage-associated molecular pattern in both animals and plants. Stomata are leaf pores that control gas exchange and, therefore, impact critical functions such as photosynthesis, drought tolerance, and also are the preferred entry point for pathogens. Here we show the addition of ATP leads to the rapid closure of leaf stomata and enhanced resistance to the bacterial pathogen Psuedomonas syringae. This response is mediated by ATP recognition by the receptor DORN1, followed by direct phosphorylation of the NADPH oxidase RBOHD, resulting in elevated production of reactive oxygen species and stomatal closure. Mutation of DORN1 phosphorylation sites on RBOHD eliminates the ability of ATP to induce stomatal closure. The data implicate purinergic signaling via DORN1 in the control of stomatal aperture with important implications for the control of plant photosynthesis, water homeostasis, pathogen resistance, and ultimately yield. Extracellular ATP acts as a damage-associated molecular pattern that triggers signaling responses to wounding and environmental stimuli in plants. Here Chen et al. show that ATP perception by DORN1 can trigger stomatal closure mediated via RBOHD phosphorylation and ROS production.
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Daloso DM, Medeiros DB, Dos Anjos L, Yoshida T, Araújo WL, Fernie AR. Metabolism within the specialized guard cells of plants. THE NEW PHYTOLOGIST 2017; 216:1018-1033. [PMID: 28984366 DOI: 10.1111/nph.14823] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 08/21/2017] [Indexed: 05/21/2023]
Abstract
Contents 1018 I. 1018 II. 1019 III. 1022 IV. 1025 V. 1026 VI. 1029 1030 References 1030 SUMMARY: Stomata are leaf epidermal structures consisting of two guard cells surrounding a pore. Changes in the aperture of this pore regulate plant water-use efficiency, defined as gain of C by photosynthesis per leaf water transpired. Stomatal aperture is actively regulated by reversible changes in guard cell osmolyte content. Despite the fact that guard cells can photosynthesize on their own, the accumulation of mesophyll-derived metabolites can seemingly act as signals which contribute to the regulation of stomatal movement. It has been shown that malate can act as a signalling molecule and a counter-ion of potassium, a well-established osmolyte that accumulates in the vacuole of guard cells during stomatal opening. By contrast, their efflux from guard cells is an important mechanism during stomatal closure. It has been hypothesized that the breakdown of starch, sucrose and lipids is an important mechanism during stomatal opening, which may be related to ATP production through glycolysis and mitochondrial metabolism, and/or accumulation of osmolytes such as sugars and malate. However, experimental evidence supporting this theory is lacking. Here we highlight the particularities of guard cell metabolism and discuss this in the context of the guard cells themselves and their interaction with the mesophyll cells.
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Affiliation(s)
- Danilo M Daloso
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, Ceará, 60451-970, Brasil
| | - David B Medeiros
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brasil
| | - Letícia Dos Anjos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Fortaleza, Ceará, 60451-970, Brasil
| | - Takuya Yoshida
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
| | - Wagner L Araújo
- Max-Planck Partner Group at the Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brasil
| | - Alisdair R Fernie
- Max-Planck-Institut für Molekulare Pflanzenphysiologie, Am Mühlenberg 1, Potsdam-Golm, 14476, Germany
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Kumar Tripathy M, Weeraratne G, Clark G, Roux SJ. Apyrase inhibitors enhance the ability of diverse fungicides to inhibit the growth of different plant-pathogenic fungi. MOLECULAR PLANT PATHOLOGY 2017; 18:1012-1023. [PMID: 27392542 PMCID: PMC6638264 DOI: 10.1111/mpp.12458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/24/2016] [Accepted: 07/06/2016] [Indexed: 06/06/2023]
Abstract
A previous study has demonstrated that the treatment of Arabidopsis plants with chemical inhibitors of apyrase enzymes increases their sensitivity to herbicides. In this study, we found that the addition of the same or related apyrase inhibitors could potentiate the ability of different fungicides to inhibit the growth of five different pathogenic fungi in plate growth assays. The growth of all five fungi was partially inhibited by three commonly used fungicides: copper octanoate, myclobutanil and propiconazole. However, when these fungicides were individually tested in combination with any one of four different apyrase inhibitors (AI.1, AI.10, AI.13 or AI.15), their potency to inhibit the growth of five fungal pathogens was increased significantly relative to their application alone. The apyrase inhibitors were most effective in potentiating the ability of copper octanoate to inhibit fungal growth, and least effective in combination with propiconazole. Among the five pathogens assayed, that most sensitive to the fungicide-potentiating effects of the inhibitors was Sclerotinia sclerotiorum. Overall, among the 60 treatment combinations tested (five pathogens, four apyrase inhibitors, three fungicides), the addition of apyrase inhibitors increased significantly the sensitivity of fungi to the fungicide treatments in 53 of the combinations. Consistent with their predicted mode of action, inhibitors AI.1, AI.10 and AI.13 each increased the level of propiconazole retained in one of the fungi, suggesting that they could partially block the ability of efflux transporters to remove propiconazole from these fungi.
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Affiliation(s)
- Manas Kumar Tripathy
- Department of Molecular BiosciencesUniversity of Texas at AustinAustinTX78712USA
| | - Gayani Weeraratne
- Department of Molecular BiosciencesUniversity of Texas at AustinAustinTX78712USA
| | - Greg Clark
- Department of Molecular BiosciencesUniversity of Texas at AustinAustinTX78712USA
| | - Stanley J. Roux
- Department of Molecular BiosciencesUniversity of Texas at AustinAustinTX78712USA
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Boutrot F, Zipfel C. Function, Discovery, and Exploitation of Plant Pattern Recognition Receptors for Broad-Spectrum Disease Resistance. ANNUAL REVIEW OF PHYTOPATHOLOGY 2017; 55:257-286. [PMID: 28617654 DOI: 10.1146/annurev-phyto-080614-120106] [Citation(s) in RCA: 394] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Plants are constantly exposed to would-be pathogens and pests, and thus have a sophisticated immune system to ward off these threats, which otherwise can have devastating ecological and economic consequences on ecosystems and agriculture. Plants employ receptor kinases (RKs) and receptor-like proteins (RLPs) as pattern recognition receptors (PRRs) to monitor their apoplastic environment and detect non-self and damaged-self patterns as signs of potential danger. Plant PRRs contribute to both basal and non-host resistances, and treatment with pathogen-/microbe-associated molecular patterns (PAMPs/MAMPs) or damage-associated molecular patterns (DAMPs) recognized by plant PRRs induces both local and systemic immunity. Here, we comprehensively review known PAMPs/DAMPs recognized by plants as well as the plant PRRs described to date. In particular, we describe the different methods that can be used to identify PAMPs/DAMPs and PRRs. Finally, we emphasize the emerging biotechnological potential use of PRRs to improve broad-spectrum, and potentially durable, disease resistance in crops.
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Affiliation(s)
- Freddy Boutrot
- The Sainsbury Laboratory, Norwich Research Park, Norwich, NR4 7UH, United Kingdom;
| | - Cyril Zipfel
- The Sainsbury Laboratory, Norwich Research Park, Norwich, NR4 7UH, United Kingdom;
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Zhu R, Dong X, Hao W, Gao W, Zhang W, Xia S, Liu T, Shang Z. Heterotrimeric G Protein-Regulated Ca 2+ Influx and PIN2 Asymmetric Distribution Are Involved in Arabidopsis thaliana Roots' Avoidance Response to Extracellular ATP. FRONTIERS IN PLANT SCIENCE 2017; 8:1522. [PMID: 28919907 PMCID: PMC5585194 DOI: 10.3389/fpls.2017.01522] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 08/18/2017] [Indexed: 05/04/2023]
Abstract
Extracellular ATP (eATP) has been reported to be involved in plant growth as a primary messenger in the apoplast. Here, roots of Arabidopsis thaliana seedlings growing in jointed medium bent upon contact with ATP-containing medium to keep away from eATP, showing a marked avoidance response. Roots responded similarly to ADP and bz-ATP but did not respond to AMP and GTP. The eATP avoidance response was reduced in loss-of-function mutants of heterotrimeric G protein α subunit (Gα) (gpa1-1 and gpa1-2) and enhanced in Gα-over-expression (OE) lines (wGα and cGα). Ethylenebis(oxyethylenenitrilo) tetraacetic acid (EGTA) and Gd3+ remarkably suppressed eATP-induced root bending. ATP-stimulated Ca2+ influx was impaired in Gα null mutants and increased in its OE lines. DR5-GFP and PIN2 were asymmetrically distributed in ATP-stimulated root tips, this effect was strongly suppressed by EGTA and diminished in Gα null mutants. In addition, some eATP-induced genes' expression was also impaired in Gα null mutants. Based on these results, we propose that heterotrimeric Gα-regulated Ca2+ influx and PIN2 distribution may be key signaling events in eATP sensing and avoidance response in Arabidopsis thaliana roots.
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Guiguet A, Dubreuil G, Harris MO, Appel HM, Schultz JC, Pereira MH, Giron D. Shared weapons of blood- and plant-feeding insects: Surprising commonalities for manipulating hosts. JOURNAL OF INSECT PHYSIOLOGY 2016; 84:4-21. [PMID: 26705897 DOI: 10.1016/j.jinsphys.2015.12.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 12/14/2015] [Accepted: 12/15/2015] [Indexed: 05/04/2023]
Abstract
Insects that reprogram host plants during colonization remind us that the insect side of plant-insect story is just as interesting as the plant side. Insect effectors secreted by the salivary glands play an important role in plant reprogramming. Recent discoveries point to large numbers of salivary effectors being produced by a single herbivore species. Since genetic and functional characterization of effectors is an arduous task, narrowing the field of candidates is useful. We present ideas about types and functions of effectors from research on blood-feeding parasites and their mammalian hosts. Because of their importance for human health, blood-feeding parasites have more tools from genomics and other - omics than plant-feeding parasites. Four themes have emerged: (1) mechanical damage resulting from attack by blood-feeding parasites triggers "early danger signals" in mammalian hosts, which are mediated by eATP, calcium, and hydrogen peroxide, (2) mammalian hosts need to modulate their immune responses to the three "early danger signals" and use apyrases, calreticulins, and peroxiredoxins, respectively, to achieve this, (3) blood-feeding parasites, like their mammalian hosts, rely on some of the same "early danger signals" and modulate their immune responses using the same proteins, and (4) blood-feeding parasites deploy apyrases, calreticulins, and peroxiredoxins in their saliva to manipulate the "danger signals" of their mammalian hosts. We review emerging evidence that plant-feeding insects also interfere with "early danger signals" of their hosts by deploying apyrases, calreticulins and peroxiredoxins in saliva. Given emerging links between these molecules, and plant growth and defense, we propose that these effectors interfere with phytohormone signaling, and therefore have a special importance for gall-inducing and leaf-mining insects, which manipulate host-plants to create better food and shelter.
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Affiliation(s)
- Antoine Guiguet
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261 CNRS - Université François-Rabelais de Tours, 37200 Tours, France; Département de Biologie, École Normale Supérieure de Lyon, 69007 Lyon, France
| | - Géraldine Dubreuil
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261 CNRS - Université François-Rabelais de Tours, 37200 Tours, France
| | - Marion O Harris
- Department of Entomology, North Dakota State University, Fargo, ND 58105, USA; Le Studium Loire Valley Institute for Advanced Studies, 45000 Orléans, France
| | - Heidi M Appel
- Life Science Center, University of Missouri, Columbia, MO 65211, USA
| | - Jack C Schultz
- Life Science Center, University of Missouri, Columbia, MO 65211, USA
| | - Marcos H Pereira
- Le Studium Loire Valley Institute for Advanced Studies, 45000 Orléans, France; Laboratório de Fisiologia de Insectos Hematófagos, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - David Giron
- Institut de Recherche sur la Biologie de l'Insecte, UMR 7261 CNRS - Université François-Rabelais de Tours, 37200 Tours, France.
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Scuffi D, Lamattina L, García-Mata C. Decoding the Interaction Between Nitric Oxide and Hydrogen Sulfide in Stomatal Movement. GASOTRANSMITTERS IN PLANTS 2016. [DOI: 10.1007/978-3-319-40713-5_13] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Yang X, Wang B, Farris B, Clark G, Roux SJ. Modulation of Root Skewing in Arabidopsis by Apyrases and Extracellular ATP. PLANT & CELL PHYSIOLOGY 2015; 56:2197-206. [PMID: 26412783 DOI: 10.1093/pcp/pcv134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 09/16/2015] [Indexed: 05/04/2023]
Abstract
When plant primary roots grow along a tilted surface that is impenetrable, they can undergo a slanted deviation from the direction of gravity called skewing. Skewing is induced by touch stimuli which the roots experience as they grow along the surface. Touch stimuli also induce the release of extracellular ATP (eATP) into the plant's extracellular matrix, and two apyrases (NTPDases) in Arabidopsis, APY1 and APY2, can help regulate the concentration of eATP. The primary roots of seedlings overexpressing APY1 show less skewing than wild-type plants. Plants suppressed in their expression of APY1 show more skewing than wild-type plants. Correspondingly, chemical inhibition of apyrase activity increased skewing in mutants and wild-type roots. Exogenous application of ATP or ATPγS also increased skewing in wild-type roots, which could be blocked by co-incubation with a purinergic receptor antagonist. These results suggest a model in which gradients of eATP set up by differential touch stimuli along roots help direct skewing in roots growing along an impenetrable surface.
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Affiliation(s)
- Xingyan Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, China
| | - Bochu Wang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, Bioengineering College, Chongqing University, Chongqing, 400030, China
| | - Ben Farris
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Greg Clark
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA
| | - Stanley J Roux
- Department of Molecular Biosciences, The University of Texas at Austin, Austin, TX 78712, USA
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Biochemical characterization of Arabidopsis APYRASE family reveals their roles in regulating endomembrane NDP/NMP homoeostasis. Biochem J 2015; 472:43-54. [PMID: 26338998 DOI: 10.1042/bj20150235] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 09/03/2015] [Indexed: 12/27/2022]
Abstract
Plant apyrases are nucleoside triphosphate (NTP) diphosphohydrolases (NTPDases) and have been implicated in an array of functions within the plant including the regulation of extracellular ATP. Arabidopsis encodes a family of seven membrane bound apyrases (AtAPY1-7) that comprise three distinct clades, all of which contain the five conserved apyrase domains. With the exception of AtAPY1 and AtAPY2, the biochemical and the sub-cellular characterization of the other members are currently unavailable. In this research, we have shown all seven Arabidopsis apyrases localize to internal membranes comprising the cis-Golgi, endoplasmic reticulum (ER) and endosome, indicating an endo-apyrase classification for the entire family. In addition, all members, with the exception of AtAPY7, can function as endo-apyrases by complementing a yeast double mutant (Δynd1Δgda1) which lacks apyrase activity. Interestingly, complementation of the mutant yeast using well characterized human apyrases could only be accomplished by using a functional ER endo-apyrase (NTPDase6), but not the ecto-apyrase (NTPDase1). Furthermore, the substrate specificity analysis for the Arabidopsis apyrases AtAPY1-6 indicated that each member has a distinct set of preferred substrates covering various NDPs (nucleoside diphosphates) and NTPs. Combining the biochemical analysis and sub-cellular localization of the Arabidopsis apyrases family, the data suggest their possible roles in regulating endomembrane NDP/NMP (nucleoside monophosphate) homoeostasis.
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Polle A, Chen S. On the salty side of life: molecular, physiological and anatomical adaptation and acclimation of trees to extreme habitats. PLANT, CELL & ENVIRONMENT 2015; 38:1794-816. [PMID: 25159181 DOI: 10.1111/pce.12440] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 08/11/2014] [Accepted: 08/17/2014] [Indexed: 05/04/2023]
Abstract
Saline and sodic soils that cannot be used for agriculture occur worldwide. Cultivating stress-tolerant trees to obtain biomass from salinized areas has been suggested. Various tree species of economic importance for fruit, fibre and timber production exhibit high salinity tolerance. Little is known about the mechanisms enabling tree crops to cope with high salinity for extended periods. Here, the molecular, physiological and anatomical adjustments underlying salt tolerance in glycophytic and halophytic model tree species, such as Populus euphratica in terrestrial habitats, and mangrove species along coastlines are reviewed. Key mechanisms that have been identified as mediating salt tolerance are discussed at scales from the genetic to the morphological level, including leaf succulence and structural adjustments of wood anatomy. The genetic and transcriptomic bases for physiological salt acclimation are salt sensing and signalling networks that activate target genes; the target genes keep reactive oxygen species under control, maintain the ion balance and restore water status. Evolutionary adaptation includes gene duplication in these pathways. Strategies for and limitations to tree improvement, particularly transgenic approaches for increasing salt tolerance by transforming trees with single and multiple candidate genes, are discussed.
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Affiliation(s)
- Andrea Polle
- Forstbotanik und Baumphysiologie, Büsgen-Institut, Georg-August Universität Göttingen, Göttingen, 37077, Germany
| | - Shaoliang Chen
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, 100083, China
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Deng S, Sun J, Zhao R, Ding M, Zhang Y, Sun Y, Wang W, Tan Y, Liu D, Ma X, Hou P, Wang M, Lu C, Shen X, Chen S. Populus euphratica APYRASE2 Enhances Cold Tolerance by Modulating Vesicular Trafficking and Extracellular ATP in Arabidopsis Plants. PLANT PHYSIOLOGY 2015; 169:530-548. [PMID: 26224801 PMCID: PMC4577398 DOI: 10.1104/pp.15.00581] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2015] [Accepted: 07/28/2015] [Indexed: 05/20/2023]
Abstract
Apyrase and extracellular ATP play crucial roles in mediating plant growth and defense responses. In the cold-tolerant poplar, Populus euphratica, low temperatures up-regulate APYRASE2 (PeAPY2) expression in callus cells. We investigated the biochemical characteristics of PeAPY2 and its role in cold tolerance. We found that PeAPY2 predominantly localized to the plasma membrane, but punctate signals also appeared in the endoplasmic reticulum and Golgi apparatus. PeAPY2 exhibited broad substrate specificity, but it most efficiently hydrolyzed purine nucleotides, particularly ATP. PeAPY2 preferred Mg(2+) as a cofactor, and it was insensitive to various, specific ATPase inhibitors. When PeAPY2 was ectopically expressed in Arabidopsis (Arabidopsis thaliana), cold tolerance was enhanced, based on root growth measurements and survival rates. Moreover, under cold stress, PeAPY2-transgenic plants maintained plasma membrane integrity and showed reduced cold-elicited electrolyte leakage compared with wild-type plants. These responses probably resulted from efficient plasma membrane repair via vesicular trafficking. Indeed, transgenic plants showed accelerated endocytosis and exocytosis during cold stress and recovery. We found that low doses of extracellular ATP accelerated vesicular trafficking, but high extracellular ATP inhibited trafficking and reduced cell viability. Cold stress caused significant increases in root medium extracellular ATP. However, under these conditions, PeAPY2-transgenic lines showed greater control of extracellular ATP levels than wild-type plants. We conclude that Arabidopsis plants that overexpressed PeAPY2 could increase membrane repair by accelerating vesicular trafficking and hydrolyzing extracellular ATP to avoid excessive, cold-elicited ATP accumulation in the root medium and, thus, reduced ATP-induced inhibition of vesicular trafficking.
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Affiliation(s)
- Shurong Deng
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Jian Sun
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Rui Zhao
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Mingquan Ding
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Yinan Zhang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Yuanling Sun
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Wei Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Yeqing Tan
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Dandan Liu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Xujun Ma
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Peichen Hou
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Meijuan Wang
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Cunfu Lu
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Xin Shen
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
| | - Shaoliang Chen
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, People's Republic of China (S.D., R.Z., Y.Z., Y.S., W.W., Y.T., D.L., X.M., M.W., C.L., X.S., S.C.);College of Life Science, Jiangsu Normal University, Xuzhou 221116, People's Republic of China (J.S.);College of Agricultural and Food Science, Zhejiang Agricultural and Forestry University, Hangzhou 311300, People's Republic of China (M.D.); andNational Engineering Research Center for Information Technology in Agriculture, Beijing 100097, People's Republic of China (P.H.)
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Vanegas DC, Clark G, Cannon AE, Roux S, Chaturvedi P, McLamore ES. A self-referencing biosensor for real-time monitoring of physiological ATP transport in plant systems. Biosens Bioelectron 2015; 74:37-44. [PMID: 26094038 DOI: 10.1016/j.bios.2015.05.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 05/09/2015] [Accepted: 05/09/2015] [Indexed: 01/28/2023]
Abstract
The objective of this study was to develop a self-referencing electrochemical biosensor for the direct measurement of ATP flux into the extracellular matrix by living cells/organisms. The working mechanism of the developed biosensor is based on the activity of glycerol kinase and glycerol-3-phosphate oxidase. A stratified bi-enzyme nanocomposite was created using a protein-templated silica sol gel encapsulation technique on top of graphene-modified platinum electrodes. The biosensor exhibited excellent electrochemical performance with a sensitivity of 2.4±1.8 nA/µM, a response time of 20±13 s and a lower detection limit of 1.3±0.7 nM. The self-referencing biosensor was used to measure exogenous ATP efflux by (i) germinating Ceratopteris spores and (ii) growing Zea mays L. roots. This manuscript demonstrates the first development of a non-invasive ATP micro-biosensor for the direct measurement of eATP transport in living tissues. Before this work, assays of eATP have not been able to record the temporally transient movement of ATP at physiological levels (nM and sub-nM). The method demonstrated here accurately measured [eATP] flux in the immediate vicinity of plant cells. Although these proof of concept experiments focus on plant tissues, the technique developed herein is applicable to any living tissue, where nanomolar concentrations of ATP play a critical role in signaling and development. This tool will be invaluable for conducting hypothesis-driven life science research aimed at understanding the role of ATP in the extracellular environment.
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Affiliation(s)
- Diana C Vanegas
- Agricultural and Biological Engineering Department, University of Florida, Gainesville, USA; Food Engineering Department, Universidad del Valle, Cali, Colombia
| | - Greg Clark
- Department of Molecular Biosciences, University of Texas, Austin, USA
| | - Ashley E Cannon
- Department of Molecular Biosciences, University of Texas, Austin, USA
| | - Stanley Roux
- Department of Molecular Biosciences, University of Texas, Austin, USA
| | - Prachee Chaturvedi
- Department of Mechanical Engineering, University of Colorado, Denver, USA
| | - Eric S McLamore
- Agricultural and Biological Engineering Department, University of Florida, Gainesville, USA.
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Massalski C, Bloch J, Zebisch M, Steinebrunner I. The biochemical properties of the Arabidopsis ecto-nucleoside triphosphate diphosphohydrolase AtAPY1 contradict a direct role in purinergic signaling. PLoS One 2015; 10:e0115832. [PMID: 25822168 PMCID: PMC4379058 DOI: 10.1371/journal.pone.0115832] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 12/02/2014] [Indexed: 11/18/2022] Open
Abstract
The Arabidopsis E-NTPDase (ecto-nucleoside triphosphate diphosphohydrolase) AtAPY1 was previously shown to be involved in growth and development, pollen germination and stress responses. It was proposed to perform these functions through regulation of extracellular ATP signals. However, a GFP-tagged version was localized exclusively in the Golgi and did not hydrolyze ATP. In this study, AtAPY1 without the bulky GFP-tag was biochemically characterized with regard to its suggested role in purinergic signaling. Both the full-length protein and a soluble form without the transmembrane domain near the N-terminus were produced in HEK293 cells. Of the twelve nucleotide substrates tested, only three--GDP, IDP and UDP--were hydrolyzed, confirming that ATP was not a substrate of AtAPY1. In addition, the effects of pH, divalent metal ions, known E-NTPDase inhibitors and calmodulin on AtAPY1 activity were analyzed. AtAPY1-GFP extracted from transgenic Arabidopsis seedlings was included in the analyses. All three AtAPY1 versions exhibited very similar biochemical properties. Activity was detectable in a broad pH range, and Ca(2+), Mg(2+) and Mn(2+) were the three most efficient cofactors. Of the inhibitors tested, vanadate was the most potent one. Surprisingly, sulfonamide-based inhibitors shown to inhibit other E-NTPDases and presumed to inhibit AtAPY1 as well were not effective. Calmodulin stimulated the activity of the GFP-tagless membranous and soluble AtAPY1 forms about five-fold, but did not alter their substrate specificities. The apparent Km values obtained with AtAPY1-GFP indicate that AtAPY1 is primarily a GDPase. A putative three-dimensional structural model of the ecto-domain is presented, explaining the potent inhibitory potential of vanadate and predicting the binding mode of GDP. The found substrate specificity classifies AtAPY1 as a nucleoside diphosphatase typical of N-terminally anchored Golgi E-NTPDases and negates a direct function in purinergic signaling.
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Affiliation(s)
- Carolin Massalski
- Department of Biology, Technische Universität Dresden, Dresden, Germany
| | - Jeannine Bloch
- Department of Biology, Technische Universität Dresden, Dresden, Germany
| | - Matthias Zebisch
- Division of Structural Biology, University of Oxford, Oxford, United Kingdom
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Wang L, Ma X, Che Y, Hou L, Liu X, Zhang W. Extracellular ATP mediates H 2 S-regulated stomatal movements and guard cell K + current in a H 2 O 2 -dependent manner in Arabidopsis. Sci Bull (Beijing) 2015. [DOI: 10.1007/s11434-014-0659-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Extracellular ATP, a danger signal, is recognized by DORN1 in Arabidopsis. Biochem J 2014; 463:429-37. [PMID: 25301072 DOI: 10.1042/bj20140666] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
ATP, the universal energy currency of all organisms, is released into the extracellular matrix and serves as a signal among cells, where it is referred to as an extracellular ATP. Although a signalling role for extracellular ATP has been well studied in mammals over the last 40 years, investigations of such a role in plants are at an early stage. Recently, the first plant receptor for extracellular ATP, DOes not Respond to Nucleotides (DORN1), was identified in Arabidopsis thaliana by mutant screening. DORN1 encodes a legume-type lectin receptor kinase that is structurally distinct from the mammalian extracellular ATP receptors. In the present review, we highlight the genetic and biochemical evidence for the role of DORN1 in extracellular ATP signalling, placing this within the wider context of extracellular ATP signalling during plant stress responses.
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Wang SW, Li Y, Zhang XL, Yang HQ, Han XF, Liu ZH, Shang ZL, Asano T, Yoshioka Y, Zhang CG, Chen YL. Lacking chloroplasts in guard cells of crumpled leaf attenuates stomatal opening: both guard cell chloroplasts and mesophyll contribute to guard cell ATP levels. PLANT, CELL & ENVIRONMENT 2014; 37:2201-2210. [PMID: 24506786 DOI: 10.1111/pce.12297] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 01/24/2014] [Indexed: 06/03/2023]
Abstract
Controversies regarding the function of guard cell chloroplasts and the contribution of mesophyll in stomatal movements have persisted for several decades. Here, by comparing the stomatal opening of guard cells with (crl-ch) or without chloroplasts (crl-no ch) in one epidermis of crl (crumpled leaf) mutant in Arabidopsis, we showed that stomatal apertures of crl-no ch were approximately 65-70% those of crl-ch and approximately 50-60% those of wild type. The weakened stomatal opening in crl-no ch could be partially restored by imposing lower extracellular pH. Correspondingly, the external pH changes and K(+) accumulations following fusicoccin (FC) treatment were greatly reduced in the guard cells of crl-no ch compared with crl-ch and wild type. Determination of the relative ATP levels in individual cells showed that crl-no ch guard cells contained considerably lower levels of ATP than did crl-ch and wild type after 2 h of white light illumination. In addition, guard cell ATP levels were lower in the epidermis than in leaves, which is consistent with the observed weaker stomatal opening response to white light in the epidermis than in leaves. These results provide evidence that both guard cell chloroplasts and mesophyll contribute to the ATP source for H(+) extrusion by guard cells.
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Affiliation(s)
- Shu-Wei Wang
- Hebei Key Laboratory of Molecular and Cellular Biology, College of Life Science, Hebei Normal University, Shijiazhuang, 050024, China
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Wang F, Jia J, Wang Y, Wang W, Chen Y, Liu T, Shang Z. Hyperpolization-activated Ca(2+) channels in guard cell plasma membrane are involved in extracellular ATP-promoted stomatal opening in Vicia faba. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:1241-7. [PMID: 25014259 DOI: 10.1016/j.jplph.2014.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 03/07/2014] [Accepted: 05/14/2014] [Indexed: 05/09/2023]
Abstract
Extracellular ATP (eATP) plays essential roles in plant growth, development, and stress tolerance. Extracellular ATP-regulated stomatal movement of Arabidopsis thaliana has been reported. Here, ATP was found to promote stomatal opening of Vicia faba in a dose-dependent manner. Three weakly hydrolysable ATP analogs (adenosine 5'-O-(3-thio) triphosphate (ATPγS), 3'-O-(4-benzoyl) benzoyl adenosine 5'-triphosphate (Bz-ATP) and 2-methylthio-adenosine 5'-triphosphate (2meATP)) showed similar effects, indicating that ATP acts as a signal molecule rather than an energy charger. ADP promoted stomatal opening, while AMP and adenosine did not affect stomatal movement. An ATP-promoted stomatal opening was blocked by the NADPH oxidase inhibitor diphenylene iodonium (DPI), the reductant dithiothreitol (DTT) or the Ca(2+) channel blockers GdCl3 and LaCl3. A hyperpolarization-activated Ca(2+) channel was detected in plasma membrane of guard cell protoplast. Extracellular ATP and weakly hydrolyzable ATP analogs activated this Ca(2+) channel significantly. Extracellular ATP-promoted Ca(2+) channel activation was markedly inhibited by DPI or DTT. These results indicated that eATP may promote stomatal opening via reactive oxygen species that regulate guard cell plasma membrane Ca(2+) channels.
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Affiliation(s)
- Fang Wang
- Hebei Key Laboratory of Molecular & Cellular Biology, Key Laboratory of Molecular & Cellular Biology of Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, PR China
| | - Juanjuan Jia
- Hebei Key Laboratory of Molecular & Cellular Biology, Key Laboratory of Molecular & Cellular Biology of Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, PR China
| | - Yufang Wang
- Hebei Key Laboratory of Molecular & Cellular Biology, Key Laboratory of Molecular & Cellular Biology of Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, PR China
| | - Weixia Wang
- Hebei Key Laboratory of Molecular & Cellular Biology, Key Laboratory of Molecular & Cellular Biology of Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, PR China
| | - Yuling Chen
- Hebei Key Laboratory of Molecular & Cellular Biology, Key Laboratory of Molecular & Cellular Biology of Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, PR China
| | - Ting Liu
- Hebei Key Laboratory of Molecular & Cellular Biology, Key Laboratory of Molecular & Cellular Biology of Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, PR China
| | - Zhonglin Shang
- Hebei Key Laboratory of Molecular & Cellular Biology, Key Laboratory of Molecular & Cellular Biology of Ministry of Education, College of Life Sciences, Hebei Normal University, Shijiazhuang 050016, Hebei, PR China.
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