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Afridi MS, Kumar A, Javed MA, Dubey A, de Medeiros FHV, Santoyo G. Harnessing root exudates for plant microbiome engineering and stress resistance in plants. Microbiol Res 2024; 279:127564. [PMID: 38071833 DOI: 10.1016/j.micres.2023.127564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/02/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
A wide range of abiotic and biotic stresses adversely affect plant's growth and production. Under stress, one of the main responses of plants is the modulation of exudates excreted in the rhizosphere, which consequently leads to alterations in the resident microbiota. Thus, the exudates discharged into the rhizospheric environment play a preponderant role in the association and formation of plant-microbe interactions. In this review, we aimed to provide a synthesis of the latest and most pertinent literature on the diverse biochemical and structural compositions of plant root exudates. Also, this work investigates into their multifaceted role in microbial nutrition and intricate signaling processes within the rhizosphere, which includes quorum-sensing molecules. Specifically, it explores the contributions of low molecular weight compounds, such as carbohydrates, phenolics, organic acids, amino acids, and secondary metabolites, as well as the significance of high molecular weight compounds, including proteins and polysaccharides. It also discusses the state-of-the-art omics strategies that unveil the vital role of root exudates in plant-microbiome interactions, including defense against pathogens like nematodes and fungi. We propose multiple challenges and perspectives, including exploiting plant root exudates for host-mediated microbiome engineering. In this discourse, root exudates and their derived interactions with the rhizospheric microbiota should receive greater attention due to their positive influence on plant health and stress mitigation.
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Affiliation(s)
- Muhammad Siddique Afridi
- Department of Plant Pathology, Federal University of Lavras, CP3037, 37200-900 Lavras, MG, Brazil.
| | - Ashwani Kumar
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, MP, India
| | - Muhammad Ammar Javed
- Institute of Industrial Biotechnology, Government College University, Lahore 54000, Pakistan
| | - Anamika Dubey
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, MP, India
| | | | - Gustavo Santoyo
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030 Morelia, Mexico.
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Li LL, Li Z, Lou Y, Meiners SJ, Kong CH. (-)-Loliolide is a general signal of plant stress that activates jasmonate-related responses. THE NEW PHYTOLOGIST 2023; 238:2099-2112. [PMID: 36444519 DOI: 10.1111/nph.18644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/24/2022] [Indexed: 05/04/2023]
Abstract
The production of defensive metabolites in plants can be induced by signaling chemicals released by neighboring plants. Induction is mainly known from volatile aboveground signals, with belowground signals and their underlying mechanisms largely unknown. We demonstrate that (-)-loliolide triggers defensive metabolite responses to competitors, herbivores, and pathogens in seven plant species. We further explore the transcriptional responses of defensive pathways to verify the signaling role of (-)-loliolide in wheat and rice models with well-known defensive metabolites and gene systems. In response to biotic and abiotic stressors, (-)-loliolide is produced and secreted by roots. This, in turn, induces the production of defensive compounds including phenolic acids, flavonoids, terpenoids, alkaloids, benzoxazinoids, and cyanogenic glycosides, regardless of plant species. (-)-Loliolide also triggers the expression of defense-related genes, accompanied by an increase in the concentration of jasmonic acid and hydrogen peroxide (H2 O2 ). Transcriptome profiling and inhibitor incubation indicate that (-)-loliolide-induced defense responses are regulated through pathways mediated by jasmonic acid, H2 O2 , and Ca 2+ . These findings argue that (-)-loliolide functions as a common belowground signal mediating chemical defense in plants. Such perception-dependent plant chemical defenses will yield critical insights into belowground signaling interactions.
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Affiliation(s)
- Lei-Lei Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Zheng Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
| | - Yonggen Lou
- Institute of Insect Science, Zhejiang University, Hangzhou, 310058, China
| | - Scott J Meiners
- Department of Biological Sciences, Eastern Illinois University, Charleston, IL, 61920, USA
| | - Chui-Hua Kong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China
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3
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Sharma I, Kashyap S, Agarwala N. Biotic stress-induced changes in root exudation confer plant stress tolerance by altering rhizospheric microbial community. FRONTIERS IN PLANT SCIENCE 2023; 14:1132824. [PMID: 36968415 PMCID: PMC10036841 DOI: 10.3389/fpls.2023.1132824] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Every organism on the earth maintains some kind of interaction with its neighbours. As plants are sessile, they sense the varied above-ground and below-ground environmental stimuli and decipher these dialogues to the below-ground microbes and neighbouring plants via root exudates as chemical signals resulting in the modulation of the rhizospheric microbial community. The composition of root exudates depends upon the host genotype, environmental cues, and interaction of plants with other biotic factors. Crosstalk of plants with biotic agents such as herbivores, microbes, and neighbouring plants can change host plant root exudate composition, which may permit either positive or negative interactions to generate a battlefield in the rhizosphere. Compatible microbes utilize the plant carbon sources as their organic nutrients and show robust co-evolutionary changes in changing circumstances. In this review, we have mainly focused on the different biotic factors responsible for the synthesis of alternative root exudate composition leading to the modulation of rhizosphere microbiota. Understanding the stress-induced root exudate composition and resulting change in microbial community can help us to devise strategies in engineering plant microbiomes to enhance plant adaptive capabilities in a stressful environment.
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Sharma A, Abrahamian P, Carvalho R, Choudhary M, Paret ML, Vallad GE, Jones JB. Future of Bacterial Disease Management in Crop Production. ANNUAL REVIEW OF PHYTOPATHOLOGY 2022; 60:259-282. [PMID: 35790244 DOI: 10.1146/annurev-phyto-021621-121806] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bacterial diseases are a constant threat to crop production globally. Current management strategies rely on an array of tactics, including improved cultural practices; application of bactericides, plant activators, and biocontrol agents; and use of resistant varieties when available. However, effective management remains a challenge, as the longevity of deployed tactics is threatened by constantly changing bacterial populations. Increased scrutiny of the impact of pesticides on human and environmental health underscores the need for alternative solutions that are durable, sustainable, accessible to farmers, and environmentally friendly. In this review, we discuss the strengths and shortcomings of existing practices and dissect recent advances that may shape the future of bacterial disease management. We conclude that disease resistance through genome modification may be the most effective arsenal against bacterial diseases. Nonetheless, more research is necessary for developing novel bacterial disease management tactics to meet the food demand of a growing global population.
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Affiliation(s)
- Anuj Sharma
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA;
| | - Peter Abrahamian
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA;
- Gulf Coast Research and Education Center, University of Florida, Wimauma, Florida, USA
- Plant Pathogen Confirmatory Diagnostic Laboratory, USDA-APHIS, Beltsville, Maryland, USA
| | - Renato Carvalho
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA;
| | - Manoj Choudhary
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA;
| | - Mathews L Paret
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA;
- North Florida Research and Education Center, University of Florida, Quincy, Florida, USA
| | - Gary E Vallad
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA;
- Gulf Coast Research and Education Center, University of Florida, Wimauma, Florida, USA
| | - Jeffrey B Jones
- Department of Plant Pathology, University of Florida, Gainesville, Florida, USA;
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Systemic acquired resistance-associated transport and metabolic regulation of salicylic acid and glycerol-3-phosphate. Essays Biochem 2022; 66:673-681. [PMID: 35920211 DOI: 10.1042/ebc20210098] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/13/2022] [Accepted: 07/20/2022] [Indexed: 11/17/2022]
Abstract
Systemic acquired resistance (SAR), a type of long-distance immunity in plants, provides long-lasting resistance to a broad spectrum of pathogens. SAR is thought to involve the rapid generation and systemic transport of a mobile signal that prepares systemic parts of the plant to better resist future infections. Exploration of the molecular mechanisms underlying SAR have identified multiple mobile regulators of SAR in the last few decades. Examination of the relationship among several of these seemingly unrelated molecules depicts a forked pathway comprising at least two branches of equal importance to SAR. One branch is regulated by the plant hormone salicylic acid (SA), and the other culminates (based on current knowledge) with the phosphorylated sugar derivative, glycerol-3-phosphate (G3P). This review summarizes the activities that contribute to pathogen-responsive generation of SA and G3P and the components that regulate their systemic transport during SAR.
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Riu M, Kim MS, Choi SK, Oh SK, Ryu CM. Elicitation of Innate Immunity by a Bacterial Volatile 2-Nonanone at Levels below Detection Limit in Tomato Rhizosphere. Mol Cells 2022; 45:502-511. [PMID: 35791736 PMCID: PMC9260139 DOI: 10.14348/molcells.2022.2009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 02/24/2022] [Accepted: 02/24/2022] [Indexed: 11/27/2022] Open
Abstract
Bacterial volatile compounds (BVCs) exert beneficial effects on plant protection both directly and indirectly. Although BVCs have been detected in vitro, their detection in situ remains challenging. The purpose of this study was to investigate the possibility of BVCs detection under in situ condition and estimate the potentials of in situ BVC to plants at below detection limit. We developed a method for detecting BVCs released by the soil bacteria Bacillus velezensis strain GB03 and Streptomyces griseus strain S4-7 in situ using solid-phase microextraction coupled with gas chromatography-mass spectrometry (SPME-GC-MS). Additionally, we evaluated the BVC detection limit in the rhizosphere and induction of systemic immune response in tomato plants grown in the greenhouse. Two signature BVCs, 2-nonanone and caryolan-1-ol, of GB03 and S4-7 respectively were successfully detected using the soil-vial system. However, these BVCs could not be detected in the rhizosphere pretreated with strains GB03 and S4-7. The detection limit of 2-nonanone in the tomato rhizosphere was 1 µM. Unexpectedly, drench application of 2-nonanone at 10 nM concentration, which is below its detection limit, protected tomato seedlings against Pseudomonas syringae pv. tomato. Our finding highlights that BVCs, including 2-nonanone, released by a soil bacterium are functional even when present at a concentration below the detection limit of SPME-GC-MS.
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Affiliation(s)
- Myoungjoo Riu
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea
- Department of Applied Biology, College of Agriculture & Life Sciences, Chungnam National University, Daejeon 34134, Korea
| | - Man Su Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea
- Department of Biosystems and Bioengineering Program, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon 34113, Korea
| | - Soo-Keun Choi
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea
- Department of Biosystems and Bioengineering Program, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon 34113, Korea
| | - Sang-Keun Oh
- Department of Applied Biology, College of Agriculture & Life Sciences, Chungnam National University, Daejeon 34134, Korea
| | - Choong-Min Ryu
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Korea
- Department of Biosystems and Bioengineering Program, KRIBB School of Biotechnology, University of Science and Technology (UST), Daejeon 34113, Korea
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Sharifi R, Jeon JS, Ryu CM. Belowground plant-microbe communications via volatile compounds. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:463-486. [PMID: 34727189 DOI: 10.1093/jxb/erab465] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
Volatile compounds play important roles in rhizosphere biological communications and interactions. The emission of plant and microbial volatiles is a dynamic phenomenon that is affected by several endogenous and exogenous signals. Diffusion of volatiles can be limited by their adsorption, degradation, and dissolution under specific environmental conditions. Therefore, rhizosphere volatiles need to be investigated on a micro and spatiotemporal scale. Plant and microbial volatiles can expand and specialize the rhizobacterial niche not only by improving the root system architecture such that it serves as a nutrient-rich shelter, but also by inhibiting or promoting the growth, chemotaxis, survival, and robustness of neighboring organisms. Root volatiles play an important role in engineering the belowground microbiome by shaping the microbial community structure and recruiting beneficial microbes. Microbial volatiles are appropriate candidates for improving plant growth and health during environmental challenges and climate change. However, some technical and experimental challenges limit the non-destructive monitoring of volatile emissions in the rhizosphere in real-time. In this review, we attempt to clarify the volatile-mediated intra- and inter-kingdom communications in the rhizosphere, and propose improvements in experimental design for future research.
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Affiliation(s)
- Rouhallah Sharifi
- Department of Plant Protection, College of Agriculture and Natural Resources, Razi University, Kermanshah, Iran
| | - Je-Seung Jeon
- Molecular Phytobacteriology Laboratory, Infectious Disease Research Center, KRIBB, Daejeon 34141, South Korea
| | - Choong-Min Ryu
- Molecular Phytobacteriology Laboratory, Infectious Disease Research Center, KRIBB, Daejeon 34141, South Korea
- Biosystem and Bioengineering Program, University of Science and Technology (UST), Daejeon 34141, South Korea
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Song GC, Jeon J, Choi HK, Sim H, Kim S, Ryu C. Bacterial type III effector-induced plant C8 volatiles elicit antibacterial immunity in heterospecific neighbouring plants via airborne signalling. PLANT, CELL & ENVIRONMENT 2022; 45:236-247. [PMID: 34708407 PMCID: PMC9298316 DOI: 10.1111/pce.14209] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/08/2021] [Accepted: 10/15/2021] [Indexed: 05/10/2023]
Abstract
Upon sensing attack by pathogens and insect herbivores, plants release complex mixtures of volatile compounds. Here, we show that the infection of lima bean (Phaseolus lunatus L.) plants with the non-host bacterial pathogen Pseudomonas syringae pv. tomato led to the production of microbe-induced plant volatiles (MIPVs). Surprisingly, the bacterial type III secretion system, which injects effector proteins directly into the plant cytosol to subvert host functions, was found to prime both intra- and inter-specific defense responses in neighbouring wild tobacco (Nicotiana benthamiana) plants. Screening of each of 16 effectors using the Pseudomonas fluorescens effector-to-host analyser revealed that an effector, HopP1, was responsible for immune activation in receiver tobacco plants. Further study demonstrated that 1-octen-3-ol, 3-octanone and 3-octanol are novel MIPVs emitted by the lima bean plant in a HopP1-dependent manner. Exposure to synthetic 1-octen-3-ol activated immunity in tobacco plants against a virulent pathogen Pseudomonas syringae pv. tabaci. Our results show for the first time that a bacterial type III effector can trigger the emission of C8 plant volatiles that mediate defense priming via plant-plant interactions. These results provide novel insights into the role of airborne chemicals in bacterial pathogen-induced inter-specific plant-plant interactions.
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Affiliation(s)
- Geun Cheol Song
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
| | - Je‐Seung Jeon
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
| | - Hye Kyung Choi
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
| | - Hee‐Jung Sim
- Environmental Chemistry Research GroupKorea Institute of Toxicology (KIT)JinjuSouth Korea
| | - Sang‐Gyu Kim
- Department of Biological SciencesKorea Advanced Institute of Science and TechnologyDaejeonSouth Korea
| | - Choong‐Min Ryu
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
- Biosystems and Bioengineering ProgramUniversity of Science and Technology (UST)DaejeonSouth Korea
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Pélissier R, Buendia L, Brousse A, Temple C, Ballini E, Fort F, Violle C, Morel JB. Plant neighbour-modulated susceptibility to pathogens in intraspecific mixtures. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:6570-6580. [PMID: 34125197 PMCID: PMC8483782 DOI: 10.1093/jxb/erab277] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 06/11/2021] [Indexed: 05/18/2023]
Abstract
As part of a trend towards diversifying cultivated areas, varietal mixtures are subject to renewed interest as a means to manage diseases. Besides the epidemiological effects of varietal mixtures on pathogen propagation, little is known about the effect of intraspecific plant-plant interactions and their impact on responses to disease. In this study, genotypes of rice (Oryza sativa) or durum wheat (Triticum turgidum) were grown with different conspecific neighbours and manually inoculated under conditions preventing pathogen propagation. Disease susceptibility was measured together with the expression of basal immunity genes as part of the response to intra-specific neighbours. The results showed that in many cases for both rice and wheat susceptibility to pathogens and immunity was modified by the presence of intraspecific neighbours. This phenomenon, which we term 'neighbour-modulated susceptibility' (NMS), could be caused by the production of below-ground signals and does not require the neighbours to be infected. Our results suggest that the mechanisms responsible for reducing disease in varietal mixtures in the field need to be re-examined.
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Affiliation(s)
- Rémi Pélissier
- PHIM Plant Health Institute, Université de Montpellier, Institut Agro, CIRAD, INRAE, IRD, Montpellier, France
| | - Luis Buendia
- PHIM Plant Health Institute, Université de Montpellier, CIRAD, INRAE, Institut Agro, IRD, Montpellier, France
| | - Andy Brousse
- PHIM Plant Health Institute, Université de Montpellier, INRAE, CIRAD, Institut Agro, IRD, Montpellier, France
| | - Coline Temple
- PHIM Plant Health Institute, Université de Montpellier, INRAE, CIRAD, Institut Agro, IRD, Montpellier, France
| | - Elsa Ballini
- PHIM Plant Health Institute, Université de Montpellier, Institut Agro, CIRAD, INRAE, IRD, Montpellier, France
| | - Florian Fort
- CEFE, Université de Montpellier, CNRS, EPHE, IRD, Institut Agro, Montpellier, France
| | - Cyrille Violle
- CEFE, Université de Montpellier, CNRS, EPHE, IRD, Montpellier, France
| | - Jean-Benoit Morel
- PHIM Plant Health Institute, Université de Montpellier, INRAE, CIRAD, Institut Agro, IRD, Montpellier, France
- Correspondence:
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Sharifi R, Ryu C. Social networking in crop plants: Wired and wireless cross-plant communications. PLANT, CELL & ENVIRONMENT 2021; 44:1095-1110. [PMID: 33274469 PMCID: PMC8049059 DOI: 10.1111/pce.13966] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2020] [Revised: 11/18/2020] [Accepted: 11/22/2020] [Indexed: 05/03/2023]
Abstract
The plant-associated microbial community (microbiome) has an important role in plant-plant communications. Plants decipher their complex habitat situations by sensing the environmental stimuli and molecular patterns and associated with microbes, herbivores and dangers. Perception of these cues generates inter/intracellular signals that induce modifications of plant metabolism and physiology. Signals can also be transferred between plants via different mechanisms, which we classify as wired- and wireless communications. Wired communications involve direct signal transfers between plants mediated by mycorrhizal hyphae and parasitic plant stems. Wireless communications involve plant volatile emissions and root exudates elicited by microbes/insects, which enable inter-plant signalling without physical contact. These producer-plant signals induce microbiome adaptation in receiver plants via facilitative or competitive mechanisms. Receiver plants eavesdrop to anticipate responses to improve fitness against stresses. An emerging body of information in plant-plant communication can be leveraged to improve integrated crop management under field conditions.
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Affiliation(s)
- Rouhallah Sharifi
- Department of Plant ProtectionCollege of Agriculture and Natural Resources, Razi UniversityKermanshahIran
| | - Choong‐Min Ryu
- Molecular Phytobacteriology LaboratoryInfectious Disease Research Center, KRIBBDaejeonSouth Korea
- Biosystem and Bioengineering ProgramUniversity of Science and Technology (UST)DaejeonSouth Korea
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Yamashita F, Rodrigues AL, Rodrigues TM, Palermo FH, Baluška F, de Almeida LFR. Potential Plant-Plant Communication Induced by Infochemical Methyl Jasmonate in Sorghum ( Sorghum bicolor). PLANTS 2021; 10:plants10030485. [PMID: 33806670 PMCID: PMC8001897 DOI: 10.3390/plants10030485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 02/26/2021] [Accepted: 02/27/2021] [Indexed: 11/25/2022]
Abstract
Despite the fact that they are sessile organisms, plants actively move their organs and also use these movements to manipulate the surrounding biotic and abiotic environments. Plants maintain communication with neighboring plants, herbivores, and predators through the emission of diverse chemical compounds by their shoots and roots. These infochemicals modify the environment occupied by plants. Moreover, some infochemicals may induce morphophysiological changes of neighboring plants. We have used methyl-jasmonate (MeJa), a plant natural infochemical, to trigger communication between emitters and receivers Sorghum bicolor plants. The split roots of two plants were allocated to three different pots, with the middle pot containing the roots of both plants. We scored low stomatal conductance (gS) and low CO2 net assimilation (A) using the plants that had contact with the infochemical for the first time. During the second contact, these parameters showed no significant differences, indicating a memory effect. We also observed that the plants that had direct leaf contact with MeJa transmitted sensory information through their roots to neighboring plants. This resulted in higher maximum fluorescence (FM) and structural changes in root anatomy. In conclusion, MeJa emerges as possible trigger for communication between neighboring sorghum plants, in response to the environmental challenges.
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Affiliation(s)
- Felipe Yamashita
- Section of Plant Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (A.L.R.); (T.M.R.); (F.H.P.); (L.F.R.d.A.)
- Institute of Cellular and Molecular Botany, University of Bonn, 53115 Bonn, Germany;
- Correspondence:
| | - Angélica Lino Rodrigues
- Section of Plant Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (A.L.R.); (T.M.R.); (F.H.P.); (L.F.R.d.A.)
| | - Tatiane Maria Rodrigues
- Section of Plant Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (A.L.R.); (T.M.R.); (F.H.P.); (L.F.R.d.A.)
| | - Fernanda Helena Palermo
- Section of Plant Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (A.L.R.); (T.M.R.); (F.H.P.); (L.F.R.d.A.)
| | - František Baluška
- Institute of Cellular and Molecular Botany, University of Bonn, 53115 Bonn, Germany;
| | - Luiz Fernando Rolim de Almeida
- Section of Plant Biology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu 18618-689, Brazil; (A.L.R.); (T.M.R.); (F.H.P.); (L.F.R.d.A.)
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Orlovskis Z, Reymond P. Pieris brassicae eggs trigger interplant systemic acquired resistance against a foliar pathogen in Arabidopsis. THE NEW PHYTOLOGIST 2020; 228:1652-1661. [PMID: 32619278 DOI: 10.1111/nph.16788] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 06/26/2020] [Indexed: 05/11/2023]
Abstract
Recognition of plant pathogens or herbivores activate a broad-spectrum plant defense priming in distal leaves against potential future attacks, leading to systemic acquired resistance (SAR). Additionally, attacked plants can release aerial or below-ground signals that trigger defense responses, such as SAR, in neighboring plants lacking initial exposure to pathogen or pest elicitors. However, the molecular mechanisms involved in interplant defense signal generation in sender plants and decoding in neighboring plants are not fully understood. We previously reported that Pieris brassicae eggs induce intraplant SAR against the foliar pathogen Pseudomonas syringae in Arabidopsis thaliana. Here we extend this effect to neighboring plants by discovering an egg-induced interplant SAR via mobile root-derived signal(s). The generation of an egg-induced interplant SAR signal requires pipecolic acid (Pip) pathway genes ALD1 and FMO1 but occurs independently of salicylic acid (SA) accumulation in sender plants. Furthermore, reception of the signal leads to accumulation of SA in the recipient plants. In response to insect eggs, plants may induce interplant SAR to prepare for potential pathogen invasion following feeding-induced wounding or to keep neighboring plants healthy for hatching larvae. Our results highlight a previously uncharacterized below-ground plant-to-plant signaling mechanism and reveals genetic components required for its generation.
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Affiliation(s)
- Zigmunds Orlovskis
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, 1015, Switzerland
| | - Philippe Reymond
- Department of Plant Molecular Biology, University of Lausanne, Lausanne, 1015, Switzerland
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Zhang HX, Feng XH, Jin JH, Khan A, Guo WL, Du XH, Gong ZH. CaSBP11 Participates in the Defense Response of Pepper to Phytophthora capsici through Regulating the Expression of Defense-Related Genes. Int J Mol Sci 2020; 21:E9065. [PMID: 33260627 PMCID: PMC7729508 DOI: 10.3390/ijms21239065] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/23/2020] [Accepted: 11/25/2020] [Indexed: 12/21/2022] Open
Abstract
Squamosa promoter binding protein (SBP)-box genes are plant-specific transcription factors involved in plant growth and development, morphogenesis and biotic and abiotic stress responses. However, these genes have been understudied in pepper, especially with respect to defense responses to Phytophthora capsici infection. CaSBP11 is a SBP-box family gene in pepper that was identified in our previous research. Silencing CaSBP11 enhanced the defense response of pepper plants to Phytophthora capsici. Without treatment, the expression of defense-related genes (CaBPR1, CaPO1, CaSAR8.2 and CaDEF1) increased in CaSBP11-silenced plants. However, the expression levels of these genes were inhibited under transient CaSBP11 expression. CaSBP11 overexpression in transgenic Nicotiana benthamiana decreased defense responses, while in Arabidopsis, it induced or inhibited the expression of genes in the salicylic acid and jasmonic acid signaling pathways. CaSBP11 overexpression in sid2-2 mutants induced AtNPR1, AtNPR3, AtNPR4, AtPAD4, AtEDS1, AtEDS5, AtMPK4 and AtNDR1 expression, while AtSARD1 and AtTGA6 expression was inhibited. CaSBP11 overexpression in coi1-21 and coi1-22 mutants, respectively, inhibited AtPDF1.2 expression and induced AtPR1 expression. These results indicate CaSBP11 has a negative regulatory effect on defense responses to Phytophthora capsici. Moreover, it may participate in the defense response of pepper to Phytophthora capsici by regulating defense-related genes and the salicylic and jasmonic acid-mediated disease resistance signaling pathways.
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Affiliation(s)
- Huai-Xia Zhang
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; (H.-X.Z.); (X.-H.F.); (J.-H.J.)
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang 453003, China; (W.-L.G.); (X.-H.D.)
| | - Xiao-Hui Feng
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; (H.-X.Z.); (X.-H.F.); (J.-H.J.)
| | - Jing-Hao Jin
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; (H.-X.Z.); (X.-H.F.); (J.-H.J.)
| | - Abid Khan
- Department of Horticulture, The University of Haripur, Haripur 22620, Pakistan;
| | - Wei-Li Guo
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang 453003, China; (W.-L.G.); (X.-H.D.)
| | - Xiao-Hua Du
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang 453003, China; (W.-L.G.); (X.-H.D.)
| | - Zhen-Hui Gong
- College of Horticulture, Northwest A&F University, Yangling, Shaanxi 712100, China; (H.-X.Z.); (X.-H.F.); (J.-H.J.)
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Zhang HX, Feng XH, Ali M, Jin JH, Wei AM, Khattak AM, Gong ZH. Identification of Pepper CaSBP08 Gene in Defense Response Against Phytophthora capsici Infection. FRONTIERS IN PLANT SCIENCE 2020; 11:183. [PMID: 32174944 PMCID: PMC7054287 DOI: 10.3389/fpls.2020.00183] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 02/07/2020] [Indexed: 05/24/2023]
Abstract
Little information is available on the role of Squamosa promoter binding protein (SBP)-box genes in pepper plants. This family of genes is known to have transcription characteristics specific to plants and to regulate plant growth, development, stress responses, and signal transduction. To investigate their specific effects in pepper (Capsicum annuum), we screened pepper SBP-box family genes (CaSBP genes) for Phytophthora capsici (P. capsici) resistance genes using virus-induced gene silencing. CaSBP08, CaSBP11, CaSBP12, and CaSBP13, which are associated with plant defense responses against P. capsici, were obtained from among fifteen identified CaSBP genes. The function of CaSBP08 was identified in pepper defense response against P. capsici infection in particular. CaSBP08 protein was localized to the nucleus. Silencing of CaSBP08 enhanced resistance to P. capsici infection. Following P. capsici inoculation, the malondialdehyde content, peroxidase activity, and disease index percentage of the CaSBP08-silenced plants decreased compared to the control. Additionally, the expression levels of other defense-related genes, especially those of CaBPR1 and CaSAR8.2, were more strongly induced in CaSBP08-silenced plants than in the control. However, CaSBP08 overexpression in Nicotiana benthamiana enhanced susceptibility to P. capsici infection. This work provides a foundation for the further research on the role of CaSBP genes in plant defense responses against P. capsici infection.
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Affiliation(s)
- Huai-Xia Zhang
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Xiao-Hui Feng
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Muhammad Ali
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Jing-Hao Jin
- College of Horticulture, Northwest A&F University, Yangling, China
| | - Ai-Min Wei
- Tianjin Vegetable Research Center, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | | | - Zhen-Hui Gong
- College of Horticulture, Northwest A&F University, Yangling, China
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Rolfe SA, Griffiths J, Ton J. Crying out for help with root exudates: adaptive mechanisms by which stressed plants assemble health-promoting soil microbiomes. Curr Opin Microbiol 2019; 49:73-82. [PMID: 31731229 DOI: 10.1016/j.mib.2019.10.003] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 09/29/2019] [Accepted: 10/03/2019] [Indexed: 01/13/2023]
Abstract
Plants employ immunological and ecological strategies to resist biotic stress. Recent evidence suggests that plants adapt to biotic stress by changing their root exudation chemistry to assemble health-promoting microbiomes. This so-called 'cry-for-help' hypothesis provides a mechanistic explanation for previously characterized soil feedback responses to plant disease, such as the development of disease-suppressing soils upon successive cultivations of take all-infected wheat. Here, we divide the hypothesis into individual stages and evaluate the evidence for each component. We review how plant immune responses modify root exudation chemistry, as well as what impact this has on microbial activities, and the subsequent plant responses to these activities. Finally, we review the ecological relevance of the interaction, along with its translational potential for future crop protection strategies.
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Affiliation(s)
- Stephen A Rolfe
- Plant Production and Protection (P(3)), Institute for Sustainable Food, The University of Sheffield, S10 2TN, UK; Department of Animal and Plant Sciences, The University of Sheffield, S10 2TN, UK
| | - Joseph Griffiths
- Department of Animal and Plant Sciences, The University of Sheffield, S10 2TN, UK
| | - Jurriaan Ton
- Plant Production and Protection (P(3)), Institute for Sustainable Food, The University of Sheffield, S10 2TN, UK; Department of Animal and Plant Sciences, The University of Sheffield, S10 2TN, UK.
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16
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Kong HG, Song GC, Ryu CM. Inheritance of seed and rhizosphere microbial communities through plant-soil feedback and soil memory. ENVIRONMENTAL MICROBIOLOGY REPORTS 2019; 11:479-486. [PMID: 31054200 DOI: 10.1111/1758-2229.12760] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 04/23/2019] [Accepted: 05/02/2019] [Indexed: 06/09/2023]
Abstract
Since the discovery of the role of microbes in the phytobiome, microbial communities (microbiota) have been identified and characterized based on host species, development, distribution, and condition. The microbiota in the plant rhizosphere is believed to have been established prior to seed germination and innate immune development. However, the microbiota in seeds has received little attention. Although our knowledge of the distribution of microbiota in plant seeds and rhizosphere is currently limited, the impact of these microbiota is likely to be greater than expected. This minireview suggests a new function of microbial inheritance from the seed to root and from the first generation of plants to the next. Surprisingly, recruitment and accumulation of microbiota by biotic and abiotic stresses affect plant immunity in the next generation through plant-soil feedback and soil memory. To illustrate this process, we propose a new term called 'microbiota-induced soil inheritance (MISI).' A comprehensive understanding of MISI will provide novel insights into plant-microbe interactions and plant immunity inheritance.
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Affiliation(s)
- Hyun Gi Kong
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon, 34141, South Korea
| | - Geun Cheol Song
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon, 34141, South Korea
| | - Choong-Min Ryu
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon, 34141, South Korea
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Guo WL, Chen BH, Guo YY, Yang HL, Mu JY, Wang YL, Li XZ, Zhou JG. Improved Powdery Mildew Resistance of Transgenic Nicotiana benthamiana Overexpressing the Cucurbita moschata CmSGT1 Gene. FRONTIERS IN PLANT SCIENCE 2019; 10:955. [PMID: 31402923 PMCID: PMC6670833 DOI: 10.3389/fpls.2019.00955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 07/09/2019] [Indexed: 05/27/2023]
Abstract
Powdery mildew (PM), which is mainly caused by Podosphaera xanthii, is a serious biotrophic pathogen disease affecting field-grown and greenhouse-grown cucurbit crops worldwide. Because fungicides poorly control PM, the development and cultivation of PM-resistant varieties is critical. A homolog of SGT1 (suppressor of the G2 allele of skp1), which encodes a key component of the plant disease-associated signal transduction pathway, was previously identified through a transcriptomic analysis of a PM-resistant pumpkin (Cucurbita moschata) inbred line infected with PM. In this study, we have characterized this SGT1 homolog in C. moschata, and investigated its effects on biotic stress resistance. Subcellular localization results revealed that CmSGT1 is present in the nucleus. Additionally, CmSGT1 expression levels in the PM-resistant material was strongly induced by PM, salicylic acid (SA) and hydrogen peroxide (H2O2). In contrast, SA and H2O2 downregulated CmSGT1 expression in the PM-susceptible material. The ethephon (Eth) and methyl jasmonate (MeJA) treatments upregulated CmSGT1 expression in both plant materials. The constitutive overexpression of CmSGT1 in Nicotiana benthamiana (N. benthamiana) minimized the PM symptoms on the leaves of PM-infected seedlings, accelerated the onset of cell necrosis, and enhanced the accumulation of H2O2. Furthermore, the expression levels of PR1a and PR5, which are SA signaling transduction markers, were higher in the transgenic plants than in wild-type plants. Thus, the transgenic N. benthamiana plants were significantly more resistant to Erysiphe cichoracearum than the wild-type plants. This increased resistance was correlated with cell death, H2O2 accumulation, and upregulated expression of SA-dependent defense genes. However, the chlorosis and yellowing of plant materials and the concentration of bacteria at infection sites were greater in the transgenic N. benthamiana plants than in the wild-type plants in response to infections by the pathogens responsible for bacterial wilt and scab. Therefore, CmSGT1-overexpressing N. benthamiana plants were hypersensitive to these two diseases. The results of this study may represent valuable genetic information for the breeding of disease-resistant pumpkin varieties, and may also help to reveal the molecular mechanism underlying CmSGT1 functions.
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Affiliation(s)
- Wei-Li Guo
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Bi-Hua Chen
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Yan-Yan Guo
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - He-Lian Yang
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Jin-Yan Mu
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Yan-Li Wang
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Xin-Zheng Li
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
| | - Jun-Guo Zhou
- School of Horticulture Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China
- Henan Province Engineering Research Center of Horticultural Plant Resource Utilization and Germplasm Enhancement, Xinxiang, China
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18
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Zhang HX, Ali M, Feng XH, Jin JH, Huang LJ, Khan A, Lv JG, Gao SY, Luo DX, Gong ZH. A Novel Transcription Factor CaSBP12 Gene Negatively Regulates the Defense Response against Phytophthora capsici in Pepper ( Capsicum annuum L.). Int J Mol Sci 2018; 20:E48. [PMID: 30583543 PMCID: PMC6337521 DOI: 10.3390/ijms20010048] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 12/16/2018] [Accepted: 12/20/2018] [Indexed: 01/24/2023] Open
Abstract
SBP-box (Squamosa-promoter binding protein) genes are a type of plant-specific transcription factor and play important roles in plant growth, signal transduction and stress response. However, little is known about the SBP-box genes in pepper (CaSBP), especially in the process of Phytophthora capsici infection. In this study, a novel gene (CaSBP12) was selected from the CaSBP gene family, which was isolated from the pepper genome database in our previous study. The CaSBP12 gene was located in the nucleus of the cell and its silencing in the pepper plant enhanced the defense response against Phytophthora capsici infection. After inoculation with Phytophthora capsici, the root activity of the CaSBP12-silenced plants is compared to control plants, while malondialdehyde (MDA) content is compared viceversa. Additionally, the expression of defense related genes (CaPO1, CaSAR8.2, CaBPR1, and CaDEF1) in the silenced plants were induced to different degrees and the peak of CaSAR8.2 and CaBPR1 were higher than that of CaDEF1. The CaSBP12 over-expressed Nicotiana benthamiana plants were more susceptible to Phytophthora capsici infection with higher EC (electrical conductivity) and MDA contents as compared to the wild-type. The relative expression of defense related genes (NbDEF, NbNPR1, NbPR1a, and NbPR1b) in transgenic and wild-type Nicotiana benthamiana plants were induced, especially the NbPR1a and NbPR1b. In conclusion, these results indicate that CaSBP12 gene negative regulates the defense response against Phytophthora capsici infection which suggests their potentially significant role in plant defense. To our knowledge, this is the first report on CaSBP gene which negative regulate defense response.
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Affiliation(s)
- Huai-Xia Zhang
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Muhammad Ali
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Xiao-Hui Feng
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Jing-Hao Jin
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Liu-Jun Huang
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Abid Khan
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
| | - Jing-Gang Lv
- Tianjin Vegetable Research Center, Tianjin 300192, China.
| | - Su-Yan Gao
- Tianjin Vegetable Research Center, Tianjin 300192, China.
| | - De-Xu Luo
- Xuhuai Region Huaiyin Institute of Agricultural Sciences, Jiangsu 223001, China.
| | - Zhen-Hui Gong
- College of Horticulture, Northwest A&F University, Yangling 712100, China.
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19
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Lee HR, Lee S, Park S, van Kleeff PJM, Schuurink RC, Ryu CM. Transient Expression of Whitefly Effectors in Nicotiana benthamiana Leaves Activates Systemic Immunity Against the Leaf Pathogen Pseudomonas syringae and Soil-Borne Pathogen Ralstonia solanacearum. Front Ecol Evol 2018. [DOI: 10.3389/fevo.2018.00090] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
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Chuberre C, Plancot B, Driouich A, Moore JP, Bardor M, Gügi B, Vicré M. Plant Immunity Is Compartmentalized and Specialized in Roots. FRONTIERS IN PLANT SCIENCE 2018; 9:1692. [PMID: 30546372 PMCID: PMC6279857 DOI: 10.3389/fpls.2018.01692] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Accepted: 10/31/2018] [Indexed: 05/21/2023]
Abstract
Roots are important organs for plant survival. In recent years, clear differences between roots and shoots in their respective plant defense strategies have been highlighted. Some putative gene markers of defense responses usually used in leaves are less relevant in roots and are sometimes not even expressed. Immune responses in roots appear to be tissue-specific suggesting a compartmentalization of defense mechanisms in root systems. Furthermore, roots are able to activate specific defense mechanisms in response to various elicitors including Molecular/Pathogen Associated Molecular Patterns, (MAMPs/PAMPs), signal compounds (e.g., hormones) and plant defense activator (e.g., β-aminobutyric acid, BABA). This review discusses recent findings in root defense mechanisms and illustrates the necessity to discover new root specific biomarkers. The development of new strategies to control root disease and improve crop quality will also be reviewed.
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Affiliation(s)
- Coralie Chuberre
- Normandie Univ, UNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA4358, Rouen, France
- Fédération de Recherche “NORVEGE”- FED 4277, Rouen, France
| | - Barbara Plancot
- Normandie Univ, UNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA4358, Rouen, France
- Fédération de Recherche “NORVEGE”- FED 4277, Rouen, France
| | - Azeddine Driouich
- Normandie Univ, UNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA4358, Rouen, France
- Fédération de Recherche “NORVEGE”- FED 4277, Rouen, France
| | - John P. Moore
- Department of Viticulture and Oenology, Faculty of AgriSciences, Institute for Wine Biotechnology, Stellenbosch University, Matieland, South Africa
| | - Muriel Bardor
- Normandie Univ, UNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA4358, Rouen, France
- Fédération de Recherche “NORVEGE”- FED 4277, Rouen, France
- Institut Universitaire de France, Paris, France
| | - Bruno Gügi
- Normandie Univ, UNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA4358, Rouen, France
- Fédération de Recherche “NORVEGE”- FED 4277, Rouen, France
- *Correspondence: Bruno Gügi, Maïté Vicré,
| | - Maïté Vicré
- Normandie Univ, UNIROUEN, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale EA4358, Rouen, France
- Fédération de Recherche “NORVEGE”- FED 4277, Rouen, France
- *Correspondence: Bruno Gügi, Maïté Vicré,
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Skrzypczak T, Krela R, Kwiatkowski W, Wadurkar S, Smoczyńska A, Wojtaszek P. Plant Science View on Biohybrid Development. Front Bioeng Biotechnol 2017; 5:46. [PMID: 28856135 PMCID: PMC5558049 DOI: 10.3389/fbioe.2017.00046] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 07/24/2017] [Indexed: 01/07/2023] Open
Abstract
Biohybrid consists of a living organism or cell and at least one engineered component. Designing robot-plant biohybrids is a great challenge: it requires interdisciplinary reconsideration of capabilities intimate specific to the biology of plants. Envisioned advances should improve agricultural/horticultural/social practice and could open new directions in utilization of plants by humans. Proper biohybrid cooperation depends upon effective communication. During evolution, plants developed many ways to communicate with each other, with animals, and with microorganisms. The most notable examples are: the use of phytohormones, rapid long-distance signaling, gravity, and light perception. These processes can now be intentionally re-shaped to establish plant-robot communication. In this article, we focus on plants physiological and molecular processes that could be used in bio-hybrids. We show phototropism and biomechanics as promising ways of effective communication, resulting in an alteration in plant architecture, and discuss the specifics of plants anatomy, physiology and development with regards to the bio-hybrids. Moreover, we discuss ways how robots could influence plants growth and development and present aims, ideas, and realized projects of plant-robot biohybrids.
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Affiliation(s)
- Tomasz Skrzypczak
- Faculty of Biology, Department of Molecular and Cellular Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Rafał Krela
- Faculty of Biology, Department of Molecular and Cellular Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Wojciech Kwiatkowski
- Faculty of Biology, Department of Molecular and Cellular Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Shraddha Wadurkar
- Faculty of Biology, Department of Molecular and Cellular Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Aleksandra Smoczyńska
- Faculty of Biology, Department of Gene Expression, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Przemysław Wojtaszek
- Faculty of Biology, Department of Molecular and Cellular Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
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22
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Sweeney C, Lakshmanan V, Bais HP. Interplant Aboveground Signaling Prompts Upregulation of Auxin Promoter and Malate Transporter as Part of Defensive Response in the Neighboring Plants. FRONTIERS IN PLANT SCIENCE 2017; 8:595. [PMID: 28469632 PMCID: PMC5395557 DOI: 10.3389/fpls.2017.00595] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 03/31/2017] [Indexed: 05/20/2023]
Abstract
When disrupted by stimuli such as herbivory, pathogenic infection, or mechanical wounding, plants secrete signals such as root exudates and volatile organic compounds (VOCs). The emission of VOCs induces a response in the neighboring plant communities and can improve plant fitness by alerting nearby plants of an impending threat and prompting them to alter their physiology for defensive purposes. In this study, we investigated the role of plant-derived signals, released as a result of mechanical wounding, that may play a role in intraspecific communication between Arabidopsis thaliana communities. Plant-derived signals released by the wounded plant resulted in more elaborate root development in the neighboring, unwounded plants. Such plant-derived signals also upregulated the Aluminum-activated malate transporter (ALMT1) responsible for the secretion of malic acid (MA) and the DR5 promoter, an auxin responsive promoter concentrated in root apex of the neighboring plants. We speculate that plant-derived signal-induced upregulation of root-specific ALMT1 in the undamaged neighboring plants sharing the environment with stressed plants may associate more with the benign microbes belowground. We also observed increased association of beneficial bacterium Bacillus subtilis UD1022 on roots of the neighboring plants sharing environment with the damaged plants. Wounding-induced plant-derived signals therefore induce defense mechanisms in the undamaged, local plants, eliciting a two-pronged preemptive response of more rapid root growth and up-regulation of ALMT1, resulting in increased association with beneficial microbiome.
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Affiliation(s)
- Connor Sweeney
- Delaware Biotechnology Institute, NewarkDE, USA
- Department of Plant and Soil Sciences, University of Delaware, NewarkDE, USA
- Wilmington Charter School, WilmingtonDE, USA
| | - Venkatachalam Lakshmanan
- Delaware Biotechnology Institute, NewarkDE, USA
- Department of Plant and Soil Sciences, University of Delaware, NewarkDE, USA
| | - Harsh P. Bais
- Delaware Biotechnology Institute, NewarkDE, USA
- Department of Plant and Soil Sciences, University of Delaware, NewarkDE, USA
- *Correspondence: Harsh P. Bais,
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Ryan PR, Delhaize E, Watt M, Richardson AE. Plant roots: understanding structure and function in an ocean of complexity. ANNALS OF BOTANY 2016; 118:555-559. [PMCID: PMC5055641 DOI: 10.1093/aob/mcw192] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 08/06/2016] [Accepted: 08/19/2016] [Indexed: 05/17/2023]
Abstract
Background The structure and function of plant roots and their interactions with soil are exciting scientific frontiers that will ultimately reveal much about our natural systems, global water and mineral and carbon cycles, and help secure food supplies into the future. This Special Issue presents a collection of papers that address topics at the forefront of our understanding of root biology. Scope These papers investigate how roots cope with drought, nutrient deficiencies, toxicities and soil compaction as well as the interactions that roots have with soil microorganisms. Roots of model plant species, annual crops and perennial species are studied in short-term experiments through to multi-year trials. Spatial scales range from the gene up to farming systems and nutrient cycling. The diverse, integrated approaches described by these studies encompass root genetics as applied to soil management, as well as documenting the signalling processes occurring between roots and shoots and between roots and soil. Conclusions This Special Issue on roots presents invited reviews and research papers covering a span of topics ranging from fundamental aspects of anatomy, growth and water uptake to roots in crop and pasture systems. Understanding root structure and function and adaptation to the abiotic and biotic stresses encountered in field conditions is important for sustainable agricultural production and better management of natural systems.
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Affiliation(s)
- Peter R. Ryan
- CSIRO Agriculture and Food, GPO Box 1600, Canberra, ACT 2601, Australia
- *For correspondence. E-mail
| | - Emmanuel Delhaize
- CSIRO Agriculture and Food, GPO Box 1600, Canberra, ACT 2601, Australia
| | - Michelle Watt
- Plant Sciences Institute, Bio and Geo Sciences, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
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