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Chen P, Huang P, Yu H, Yu H, Xie W, Wang Y, Zhou Y, Chen L, Zhang M, Yao R. Strigolactones shape the assembly of root-associated microbiota in response to phosphorus availability. mSystems 2024; 9:e0112423. [PMID: 38780241 PMCID: PMC11237589 DOI: 10.1128/msystems.01124-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 04/22/2024] [Indexed: 05/25/2024] Open
Abstract
Plants rely on strigolactones (SLs) to regulate their development and form symbiotic relationships with microbes as part of the adaptive phosphorus (P) efficiency strategies. However, the impact of SLs on root-associated microbial communities in response to P availability remains unknown. Here, root microbiota of SL biosynthesis (max3-11) and perception (d14-1) were compared to wild-type Col-0 plants under different P concentrations. Using high-throughput sequencing, the relationship between SLs, P concentrations, and the root-associated microbiota was investigated to reveal the variation in microbial diversity, composition, and interaction. Plant genotypes and P availability played important but different roles in shaping the root-associated microbial community. Importantly, SLs were found to attract Acinetobacter in low P conditions, which included an isolated CP-2 (Acinetobacter soli) that could promote plant growth in cocultivation experiments. Moreover, SLs could change the topologic structure within co-occurrence networks and increase the number of keystone taxa (e.g., Rhizobiaceae and Acidobacteriaceae) to enhance microbial community stability. This study reveals the key role of SLs in mediating root-associated microbiota interactions.IMPORTANCEStrigolactones (SLs) play a crucial role in plant development and their symbiotic relationships with microbes, particularly in adapting to phosphorus levels. Using high-throughput sequencing, we compared the root microbiota of plants with SL biosynthesis and perception mutants to wild-type plants under different phosphorus concentrations. These results found that SLs can attract beneficial microbes in low phosphorus conditions to enhance plant growth. Additionally, SLs affect microbial network structures, increasing the stability of microbial communities. This study highlights the key role of SLs in shaping root-associated microbial interactions, especially in response to phosphorus availability.
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Affiliation(s)
- Pubo Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
| | - Pingliang Huang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
| | - Haiyang Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
| | - Huang Yu
- School of Resource and Environment and Safety Engineering, University of South China, Hengyang, China
| | - Weicheng Xie
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
| | - Yuehua Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
| | - Yu Zhou
- Hunan Institute of Microbiology, Changsha, China
| | - Li Chen
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
- Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, China
| | - Meng Zhang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
- Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, China
| | - Ruifeng Yao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University, Changsha, China
- Hunan Provincial Key Laboratory of Plant Functional Genomics and Developmental Regulation, Hunan University, Changsha, China
- College of Biology, Hunan University, Changsha, China
- Yuelushan Lab, Changsha, China
- Greater Bay Area Institute for Innovation, Hunan University, Guangzhou, China
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Visentin I, Ferigolo LF, Russo G, Korwin Krukowski P, Capezzali C, Tarkowská D, Gresta F, Deva E, Nogueira FTS, Schubert A, Cardinale F. Strigolactones promote flowering by inducing the miR319- LA- SFT module in tomato. Proc Natl Acad Sci U S A 2024; 121:e2316371121. [PMID: 38701118 PMCID: PMC11087791 DOI: 10.1073/pnas.2316371121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 03/27/2024] [Indexed: 05/05/2024] Open
Abstract
Strigolactones are a class of phytohormones with various functions in plant development, stress responses, and in the interaction with (micro)organisms in the rhizosphere. While their effects on vegetative development are well studied, little is known about their role in reproduction. We investigated the effects of genetic and chemical modification of strigolactone levels on the timing and intensity of flowering in tomato (Solanum lycopersicum L.) and the molecular mechanisms underlying such effects. Results showed that strigolactone levels in the shoot, whether endogenous or exogenous, correlate inversely with the time of anthesis and directly with the number of flowers and the transcript levels of the florigen-encoding gene SINGLE FLOWER TRUSS (SFT) in the leaves. Transcript quantifications coupled with metabolite analyses demonstrated that strigolactones promote flowering in tomato by inducing the activation of the microRNA319-LANCEOLATE module in leaves. This, in turn, decreases gibberellin content and increases the transcription of SFT. Several other floral markers and morpho-anatomical features of developmental progression are induced in the apical meristems upon treatment with strigolactones, affecting floral transition and, more markedly, flower development. Thus, strigolactones promote meristem maturation and flower development via the induction of SFT both before and after floral transition, and their effects are blocked in plants expressing a miR319-resistant version of LANCEOLATE. Our study positions strigolactones in the context of the flowering regulation network in a model crop species.
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Affiliation(s)
- Ivan Visentin
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
| | - Leticia Frizzo Ferigolo
- Laboratory of Molecular Genetics of Plant Development, Escola Superior de Agricultura “Luiz de Queiroz,” University of São Paulo, Piracicaba, São Paulo13418-900, Brazil
| | - Giulia Russo
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
| | - Paolo Korwin Krukowski
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
| | - Caterina Capezzali
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
| | - Danuše Tarkowská
- Laboratory of Growth Regulators, Faculty of Sciences, Palacký University & Institute of Experimental Botany Czech Academy of Sciences, OlomoucCZ 783 71, Czech Republic
| | - Francesco Gresta
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
- StrigoLab Srl, Turin10125, Italy
| | - Eleonora Deva
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
- StrigoLab Srl, Turin10125, Italy
| | - Fabio Tebaldi Silveira Nogueira
- Laboratory of Molecular Genetics of Plant Development, Escola Superior de Agricultura “Luiz de Queiroz,” University of São Paulo, Piracicaba, São Paulo13418-900, Brazil
| | - Andrea Schubert
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
| | - Francesca Cardinale
- PlantStressLab, Department of Agricultural, Forest and Food Sciences, Turin University, Grugliasco10095, Italy
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Naciri R, Chtouki M, Oukarroum A. Mechanisms of cadmium mitigation in tomato plants under orthophosphate and polyphosphate fertilization regimes. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 274:116219. [PMID: 38492483 DOI: 10.1016/j.ecoenv.2024.116219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 03/06/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
Cadmium (Cd) is one of the most toxic elements in soil, affecting morphological, physiological, and biochemical processes in plants. Mineral plant nutrition was tested as an effective approach to mitigate Cd stress in several crop species. In this regard, the present study aimed to elucidate how different phosphorus (P) fertilization regimes can improve some bio-physiological processes in tomato plants exposed to Cd stress. In a hydroponic experiment, the impact of two phosphorus fertilizer forms (Polyphosphate (poly-P): condensed P-form with 100% polymerization rate and orthophosphate (ortho-P): from orthophosphoric acid) on the photosynthetic activity, plant growth, and nutrient uptake was assessed under three levels of Cd stress (0, 12, and 25 µM of CdCl2). The obtained results confirmed the negative effects of Cd stress on the chlorophyll content and the efficiency of the photosynthesis machinery. The application of poly-P fertilizer significantly improved the chlorophyll stability index (82%) under medium Cd stress (Cd12), as compared to the ortho-P form (55%). The analysis of the chlorophyll α fluorescence transient curve revealed that the amplitude of Cd effect on the different steps of electron transfer between PSII and PSI was significantly reduced under the poly-P fertilization regime compared to ortho-P, especially under Cd12. The evaluation of the RE0/RC parameter showed that the electron flux reducing end electron acceptors at the PSI acceptor side per reaction center was significantly improved in the poly-P treatment by 42% under Cd12 compared to the ortho-P treatment. Moreover, the use of poly-P fertilizer enhanced iron uptake and its stoichiometric homeostasis in the shoot tissue which maintained an adequate absorption of iron under Cd stress conditions. Findings from this study revealed for the first time that inorganic polyphosphate fertilizers can reduce Cd toxicity in tomato plants by enhancing photosynthesis activity, nutrient uptake, plant growth, and biomass accumulation despite the high level of cadmium accumulation in shoot tissues.
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Affiliation(s)
- Rachida Naciri
- Plant Stress Physiology Laboratory, College of Agriculture and Environmental Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco.
| | - Mohamed Chtouki
- Plant Stress Physiology Laboratory, College of Agriculture and Environmental Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
| | - Abdallah Oukarroum
- Plant Stress Physiology Laboratory, College of Agriculture and Environmental Sciences, Mohammed VI Polytechnic University, Benguerir, Morocco
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Bajetto G, Arnodo D, Biolatti M, Trifirò L, Albano C, Pasquero S, Gugliesi F, Campo E, Spyrakis F, Prandi C, De Andrea M, Dell’Oste V, Visentin I, Blangetti M. Antiherpetic Activity of a Root Exudate from Solanum lycopersicum. Microorganisms 2024; 12:373. [PMID: 38399777 PMCID: PMC10892521 DOI: 10.3390/microorganisms12020373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Revised: 02/05/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
The rise of drug resistance to antivirals poses a significant global concern for public health; therefore, there is a pressing need to identify novel compounds that can effectively counteract strains resistant to current antiviral treatments. In light of this, researchers have been exploring new approaches, including the investigation of natural compounds as alternative sources for developing potent antiviral therapies. Thus, this work aimed to evaluate the antiviral properties of the organic-soluble fraction of a root exudate derived from the tomato plant Solanum lycopersicum in the context of herpesvirus infections. Our findings demonstrated that a root exudate from Solanum lycopersicum exhibits remarkable efficacy against prominent members of the family Herpesviridae, specifically herpes simplex virus type 1 (HSV-1) (EC50 25.57 µg/mL, SI > 15.64) and human cytomegalovirus (HCMV) (EC50 9.17 µg/mL, SI 32.28) by inhibiting a molecular event during the herpesvirus replication phase. Moreover, the phytochemical fingerprint of the Solanum lycopersicum root exudate was characterized through mass spectrometry. Overall, these data have unveiled a novel natural product with antiherpetic activity, presenting a promising and valuable alternative to existing drugs.
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Affiliation(s)
- Greta Bajetto
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
- Center for Translational Research on Autoimmune and Allergic Disease (CAAD), 28100 Novara, Italy
| | - Davide Arnodo
- Department of Chemistry, University of Turin, 10125 Turin, Italy; (D.A.); (C.P.)
| | - Matteo Biolatti
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
| | - Linda Trifirò
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
| | - Camilla Albano
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
| | - Selina Pasquero
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
| | - Francesca Gugliesi
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
| | - Eva Campo
- Department of Agricultural, Forestry, and Food Sciences, University of Turin, 10095 Turin, Italy; (E.C.); (I.V.)
| | - Francesca Spyrakis
- Department of Drug Science and Technology, University of Turin, 10125 Turin, Italy;
| | - Cristina Prandi
- Department of Chemistry, University of Turin, 10125 Turin, Italy; (D.A.); (C.P.)
| | - Marco De Andrea
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
- Center for Translational Research on Autoimmune and Allergic Disease (CAAD), 28100 Novara, Italy
| | - Valentina Dell’Oste
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy; (G.B.); (M.B.); (L.T.); (C.A.); (S.P.); (F.G.); (M.D.A.)
| | - Ivan Visentin
- Department of Agricultural, Forestry, and Food Sciences, University of Turin, 10095 Turin, Italy; (E.C.); (I.V.)
| | - Marco Blangetti
- Department of Chemistry, University of Turin, 10125 Turin, Italy; (D.A.); (C.P.)
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Santoro V, Della Lucia MC, Francioso O, Stevanato P, Bertoldo G, Borella M, Ferrari E, Zaccone C, Schiavon M, Pizzeghello D, Nardi S. Phosphorus Acquisition Efficiency and Transcriptomic Changes in Maize Plants Treated with Two Lignohumates. PLANTS (BASEL, SWITZERLAND) 2023; 12:3291. [PMID: 37765455 PMCID: PMC10535022 DOI: 10.3390/plants12183291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/31/2023] [Accepted: 09/14/2023] [Indexed: 09/29/2023]
Abstract
Lignohumates are increasing in popularity in agriculture, but their chemistry and effects on plants vary based on the source and processing. The present study evaluated the ability of two humates (H1 and H2) to boost maize plant performance under different phosphorus (P) availability (25 and 250 μM) conditions in hydroponics, while understanding the underlying mechanisms. Humates differed in chemical composition, as revealed via elemental analysis, phenol and phytohormone content, and thermal and spectroscopic analyses. H1 outperformed H2 in triggering plant responses to low phosphorus by enhancing phosphatase and phytase enzymes, P acquisition efficiency, and biomass production. It contained higher levels of endogenous auxins, cytokinins, and abscisic acid, likely acting together to stimulate plant growth. H1 also improved the plant antioxidant capacity, thus potentially increasing plant resilience to external stresses. Both humates increased the nitrogen (N) content and acted as biostimulants for P and N acquisition. Consistent with the physiological and biochemical data, H1 upregulated genes involved in growth, hormone signaling and defense in all plants, and in P recycling particularly under low-P conditions. In conclusion, H1 showed promising potential for effective plant growth and nutrient utilization, especially in low-P plants, involving hormonal modulation, antioxidant enhancement, the stimulation of P uptake and P-recycling mechanisms.
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Affiliation(s)
- Veronica Santoro
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy;
| | - Maria Cristina Della Lucia
- Dipartimento di Agronomia, Animali, Alimenti, Risorse Naturali e Ambiente, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (M.C.D.L.); (P.S.); (G.B.); (M.B.); (D.P.); (S.N.)
| | - Ornella Francioso
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, University of Bologna, Viale Fanin 40, 40127 Bologna, Italy;
| | - Piergiorgio Stevanato
- Dipartimento di Agronomia, Animali, Alimenti, Risorse Naturali e Ambiente, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (M.C.D.L.); (P.S.); (G.B.); (M.B.); (D.P.); (S.N.)
| | - Giovanni Bertoldo
- Dipartimento di Agronomia, Animali, Alimenti, Risorse Naturali e Ambiente, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (M.C.D.L.); (P.S.); (G.B.); (M.B.); (D.P.); (S.N.)
| | - Matteo Borella
- Dipartimento di Agronomia, Animali, Alimenti, Risorse Naturali e Ambiente, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (M.C.D.L.); (P.S.); (G.B.); (M.B.); (D.P.); (S.N.)
| | - Erika Ferrari
- Dipartimento di Scienze Chimiche e Geologiche, University of Modena and Reggio Emilia, Via Università 4, 41121 Modena, Italy;
| | - Claudio Zaccone
- Dipartimento di Biotecnologie, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
| | - Michela Schiavon
- Dipartimento di Scienze Agrarie, Forestali e Alimentari, University of Torino, Largo Paolo Braccini 2, 10095 Grugliasco, Italy;
| | - Diego Pizzeghello
- Dipartimento di Agronomia, Animali, Alimenti, Risorse Naturali e Ambiente, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (M.C.D.L.); (P.S.); (G.B.); (M.B.); (D.P.); (S.N.)
| | - Serenella Nardi
- Dipartimento di Agronomia, Animali, Alimenti, Risorse Naturali e Ambiente, University of Padova, Viale dell’Università 16, 35020 Legnaro, Italy; (M.C.D.L.); (P.S.); (G.B.); (M.B.); (D.P.); (S.N.)
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Khan F, Siddique AB, Shabala S, Zhou M, Zhao C. Phosphorus Plays Key Roles in Regulating Plants' Physiological Responses to Abiotic Stresses. PLANTS (BASEL, SWITZERLAND) 2023; 12:2861. [PMID: 37571014 PMCID: PMC10421280 DOI: 10.3390/plants12152861] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023]
Abstract
Phosphorus (P), an essential macronutrient, plays a pivotal role in the growth and development of plants. However, the limited availability of phosphorus in soil presents significant challenges for crop productivity, especially when plants are subjected to abiotic stresses such as drought, salinity and extreme temperatures. Unraveling the intricate mechanisms through which phosphorus participates in the physiological responses of plants to abiotic stresses is essential to ensure the sustainability of agricultural production systems. This review aims to analyze the influence of phosphorus supply on various aspects of plant growth and plant development under hostile environmental conditions, with a special emphasis on stomatal development and operation. Furthermore, we discuss recently discovered genes associated with P-dependent stress regulation and evaluate the feasibility of implementing P-based agricultural practices to mitigate the adverse effects of abiotic stress. Our objective is to provide molecular and physiological insights into the role of P in regulating plants' tolerance to abiotic stresses, underscoring the significance of efficient P use strategies for agricultural sustainability. The potential benefits and limitations of P-based strategies and future research directions are also discussed.
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Affiliation(s)
- Fahad Khan
- Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia; (F.K.); (A.B.S.); (M.Z.)
| | - Abu Bakar Siddique
- Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia; (F.K.); (A.B.S.); (M.Z.)
| | - Sergey Shabala
- School of Biological Science, University of Western Australia, Crawley, WA 6009, Australia;
- International Research Centre for Environmental Membrane Biology, Foshan University, Foshan 528000, China
| | - Meixue Zhou
- Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia; (F.K.); (A.B.S.); (M.Z.)
| | - Chenchen Zhao
- Tasmanian Institute of Agriculture, University of Tasmania, Launceston, TAS 7250, Australia; (F.K.); (A.B.S.); (M.Z.)
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7
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Gu P, Tao W, Tao J, Sun H, Hu R, Wang D, Zong G, Xie X, Ruan W, Xu G, Yi K, Zhang Y. The D14-SDEL1-SPX4 cascade integrates the strigolactone and phosphate signalling networks in rice. THE NEW PHYTOLOGIST 2023; 239:673-686. [PMID: 37194447 DOI: 10.1111/nph.18963] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 04/12/2023] [Indexed: 05/18/2023]
Abstract
Modern agriculture needs large quantities of phosphate (Pi) fertilisers to obtain high yields. Information on how plants sense and adapt to Pi is required to enhance phosphorus-use efficiency (PUE) and thereby promote agricultural sustainability. Here, we show that strigolactones (SLs) regulate rice root developmental and metabolic adaptations to low Pi, by promoting efficient Pi uptake and translocation from roots to shoots. Low Pi stress triggers the synthesis of SLs, which dissociate the Pi central signalling module of SPX domain-containing protein (SPX4) and PHOSPHATE STARVATION RESPONSE protein (PHR2), leading to the release of PHR2 into the nucleus and activating the expression of Pi-starvation-induced genes including Pi transporters. The SL synthetic analogue GR24 enhances the interaction between the SL receptor DWARF 14 (D14) and a RING-finger ubiquitin E3 ligase (SDEL1). The sdel mutants have a reduced response to Pi starvation relative to wild-type plants, leading to insensitive root adaptation to Pi. Also, SLs induce the degradation of SPX4 via forming the D14-SDEL1-SPX4 complex. Our findings reveal a novel mechanism underlying crosstalk between the SL and Pi signalling networks in response to Pi fluctuations, which will enable breeding of high-PUE crop plants.
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Affiliation(s)
- Pengyuan Gu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
| | - Wenqing Tao
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
| | - Jinyuan Tao
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
| | - Huwei Sun
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
- Key Laboratory of Rice Biology in Henan Province, Collaborative Innovation Center of Henan Grain Crops, Henan Agricultural University, 450002, Zhengzhou, China
| | - Ripeng Hu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
| | - Daojian Wang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
| | - Guoxinan Zong
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
| | - Xiaonan Xie
- Utsunomiya University, 321-8505, Utsunomiya, Japan
| | - Wenyuan Ruan
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 100081, Beijing, China
| | - Guohua Xu
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
- Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, China
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, 210095, Nanjing, China
| | - Keke Yi
- Key Laboratory of Plant Nutrition and Fertilizer, Ministry of Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, 100081, Beijing, China
| | - Yali Zhang
- State Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, Nanjing Agricultural University, 210095, Nanjing, China
- Key Laboratory of Plant Nutrition and Fertilization in Low-Middle Reaches of the Yangtze River, Ministry of Agriculture, Nanjing Agricultural University, 210095, Nanjing, China
- Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, 210095, Nanjing, China
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8
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Soliman S, Wang Y, Han Z, Pervaiz T, El-kereamy A. Strigolactones in Plants and Their Interaction with the Ecological Microbiome in Response to Abiotic Stress. PLANTS (BASEL, SWITZERLAND) 2022; 11:3499. [PMID: 36559612 PMCID: PMC9781102 DOI: 10.3390/plants11243499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Phytohormones play an essential role in enhancing plant tolerance by responding to abiotic stresses, such as nutrient deficiency, drought, high temperature, and light stress. Strigolactones (SLs) are carotenoid derivatives that occur naturally in plants and are defined as novel phytohormones that regulate plant metabolism, growth, and development. Strigolactone assists plants in the acquisition of defensive characteristics against drought stress by initiating physiological responses and mediating the interaction with soil microorganisms. Nutrient deficiency is an important abiotic stress factor, hence, plants perform many strategies to survive against nutrient deficiency, such as enhancing the efficiency of nutrient uptake and forming beneficial relationships with microorganisms. Strigolactone attracts various microorganisms and provides the roots with essential elements, including nitrogen and phosphorus. Among these advantageous microorganisms are arbuscular mycorrhiza fungi (AMF), which regulate plant metabolic activities through phosphorus providing in roots. Bacterial nodulations are also nitrogen-fixing microorganisms found in plant roots. This symbiotic relationship is maintained as the plant provides organic molecules, produced in the leaves, that the bacteria could otherwise not independently generate. Related stresses, such as light stress and high-temperature stress, could be affected directly or indirectly by strigolactone. However, the messengers of these processes are unknown. The most prominent connector messengers have been identified upon the discovery of SLs and the understanding of their hormonal effect. In addition to attracting microorganisms, these groups of phytohormones affect photosynthesis, bridge other phytohormones, induce metabolic compounds. In this article, we highlighted the brief information available on SLs as a phytohormone group regarding their common related effects. In addition, we reviewed the status and described the application of SLs and plant response to abiotic stresses. This allowed us to comprehend plants' communication with the ecological microbiome as well as the strategies plants use to survive under various stresses. Furthermore, we identify and classify the SLs that play a role in stress resistance since many ecological microbiomes are unexplained.
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Affiliation(s)
- Sabry Soliman
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA
- Department of Horticulture, Faculty of Agriculture, Ain Shams University, Cairo 11566, Egypt
- Department of Fruit Science, College of Horticulture, China Agriculture University, Beijing 100083, China
| | - Yi Wang
- Department of Fruit Science, College of Horticulture, China Agriculture University, Beijing 100083, China
| | - Zhenhai Han
- Department of Fruit Science, College of Horticulture, China Agriculture University, Beijing 100083, China
| | - Tariq Pervaiz
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA
| | - Ashraf El-kereamy
- Department of Botany and Plant Sciences, University of California Riverside, Riverside, CA 92521, USA
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Adedayo AA, Babalola OO, Prigent-Combaret C, Cruz C, Stefan M, Kutu F, Glick BR. The application of plant growth-promoting rhizobacteria in Solanum lycopersicum production in the agricultural system: a review. PeerJ 2022; 10:e13405. [PMID: 35669957 PMCID: PMC9165593 DOI: 10.7717/peerj.13405] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 04/18/2022] [Indexed: 01/14/2023] Open
Abstract
Food safety is a significant challenge worldwide, from plantation to cultivation, especially for perishable products such as tomatoes. New eco-friendly strategies are needed, and beneficial microorganisms might be a sustainable solution. This study demonstrates bacteria activity in the tomato plant rhizosphere. Further, it investigates the rhizobacteria's structure, function, and diversity in soil. Rhizobacteria that promote the growth and development of tomato plants are referred to as plant growth-promoting bacteria (PGPR). They form a series of associations with plants and other organisms in the soil through a mutualistic relationship where both parties benefit from living together. It implies the antagonistic activities of the rhizobacteria to deter pathogens from invading tomato plants through their roots. Some PGPR are regarded as biological control agents that hinder the development of spoilage organisms and can act as an alternative for agricultural chemicals that may be detrimental to the health of humans, animals, and some of the beneficial microbes in the rhizosphere soil. These bacteria also help tomato plants acquire essential nutrients like potassium (K), magnesium (Mg), phosphorus (P), and nitrogen (N). Some rhizobacteria may offer a solution to low tomato production and help tackle food insecurity and farming problems. In this review, an overview of soil-inhabiting rhizobacteria focused on improving the sustainable production of Solanum lycopersicum.
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Affiliation(s)
- Afeez Adesina Adedayo
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
| | - Olubukola Oluranti Babalola
- Food Security and Safety Focus Area, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, South Africa
| | | | - Cristina Cruz
- Department of Plant Biology, Faculdade de Ciências, Universidade de Lisboa, Lisboa, Portugal
| | - Marius Stefan
- Faculty of Biology, Universitatea Alexandru Ioan Cuza, Iasi, Romania
| | - Funso Kutu
- Faculty of Agiculture and Natural Sciences, University of Mpumalanga, Mpumalanga, South Africa
| | - Bernard R. Glick
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
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Marro N, Lidoy J, Chico MÁ, Rial C, García J, Varela RM, Macías FA, Pozo MJ, Janoušková M, López-Ráez JA. Strigolactones: New players in the nitrogen-phosphorus signalling interplay. PLANT, CELL & ENVIRONMENT 2022; 45:512-527. [PMID: 34719040 DOI: 10.1111/pce.14212] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 10/15/2021] [Accepted: 10/25/2021] [Indexed: 05/08/2023]
Abstract
Nitrogen (N) and phosphorus (P) are among the most important macronutrients for plant growth and development, and the most widely used as fertilizers. Understanding how plants sense and respond to N and P deficiency is essential to optimize and reduce the use of chemical fertilizers. Strigolactones (SLs) are phytohormones acting as modulators and sensors of plant responses to P deficiency. In the present work, we assess the potential role of SLs in N starvation and in the N-P signalling interplay. Physiological, transcriptional and metabolic responses were analysed in wild-type and SL-deficient tomato plants grown under different P and N regimes, and in plants treated with a short-term pulse of the synthetic SL analogue 2'-epi-GR24. The results evidence that plants prioritize N over P status by affecting SL biosynthesis. We also show that SLs modulate the expression of key regulatory genes of phosphate and nitrate signalling pathways, including the N-P integrators PHO2 and NIGT1/HHO. The results support a key role for SLs as sensors during early plant responses to both N and phosphate starvation and mediating the N-P signalling interplay, indicating that SLs are involved in more physiological processes than so far proposed.
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Affiliation(s)
- Nicolás Marro
- Department of Mycorrhizal Symbioses, Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), CONICET, FCEFyN, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Javier Lidoy
- Group of Mycorrhizas, Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (EEZ-CSIC), Granada, Spain
| | - María Ángeles Chico
- Group of Mycorrhizas, Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (EEZ-CSIC), Granada, Spain
| | - Carlos Rial
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (CeiA3), School of Science, University of Cádiz, Cádiz, Spain
| | - Juan García
- Group of Mycorrhizas, Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (EEZ-CSIC), Granada, Spain
| | - Rosa M Varela
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (CeiA3), School of Science, University of Cádiz, Cádiz, Spain
| | - Francisco A Macías
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (CeiA3), School of Science, University of Cádiz, Cádiz, Spain
| | - María J Pozo
- Group of Mycorrhizas, Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (EEZ-CSIC), Granada, Spain
| | - Martina Janoušková
- Department of Mycorrhizal Symbioses, Institute of Botany of the Czech Academy of Sciences, Průhonice, Czech Republic
| | - Juan A López-Ráez
- Group of Mycorrhizas, Department of Soil Microbiology and Symbiotic Systems, Estación Experimental del Zaidín (EEZ-CSIC), Granada, Spain
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Wu F, Gao Y, Yang W, Sui N, Zhu J. Biological Functions of Strigolactones and Their Crosstalk With Other Phytohormones. FRONTIERS IN PLANT SCIENCE 2022; 13:821563. [PMID: 35283865 PMCID: PMC8908206 DOI: 10.3389/fpls.2022.821563] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/24/2022] [Indexed: 05/10/2023]
Abstract
Phytohormones are small chemicals critical for plant development and adaptation to a changing environment. Strigolactones (SLs), carotenoid-derived small signalling molecules and a class of phytohormones, regulate multiple developmental processes and respond to diverse environmental signals. SLs also coordinate adjustments in the balance of resource distribution by strategic modification of the plant development, allowing plants to adapt to nutrient deficiency. Instead of operating independently, SL interplays with abscisic acid, cytokinin, auxin, ethylene, and some other plant phytohormones, forming elaborate signalling networks. Hormone signalling crosstalk in plant development and environmental response may occur in a fully concerted manner or as a cascade of sequential events. In many cases, the exact underlying mechanism is unclear because of the different effects of phytohormones and the varying backgrounds of their actions. In this review, we systematically summarise the synthesis, signal transduction, and biological functions of SLs and further highlight the significance of crosstalk between SLs and other phytohormones during plant development and resistance to ever-changing environments.
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