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Olt P, Ding W, Schulze WX, Ludewig U. The LaCLE35 peptide modifies rootlet density and length in cluster roots of white lupin. PLANT, CELL & ENVIRONMENT 2024; 47:1416-1431. [PMID: 38226783 DOI: 10.1111/pce.14799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 11/24/2023] [Accepted: 12/16/2023] [Indexed: 01/17/2024]
Abstract
White lupin (lupinus albus L.) forms special bottlebrush-like root structures called cluster roots (CR) when phosphorus is low, to remobilise sparingly soluble phosphates in the soil. The molecular mechanisms that control the CR formation remain unknown. Root development in other plants is regulated by CLE (CLAVATA3/ EMBRYO SURROUNDING REGION (ESR)-RELATED) peptides, which provide more precise control mechanisms than common phytohormones. This makes these peptides interesting candidates to be involved in CR formation, where fine tuning to environmental factors is required. In this study we present an analysis of CLE peptides in white lupin. The peptides LaCLE35 (RGVHy PSGANPLHN) and LaCLE55 (RRVHy PSCHy PDPLHN) reduced root growth and altered CR in hydroponically cultured white lupins. We demonstrate that rootlet density and rootlet length were locally, but not systemically, impaired by exogenously applied CLE35. The peptide was identified in the xylem sap. The inhibitory effect of CLE35 on root growth was attributed to arrested cell elongation in root tips. Taken together, CLE peptides affect both rootlet density and rootlet length, which are two critical factors for CR formation, and may be involved in fine tuning this peculiar root structure that is present in a few crops and many Proteaceae species, under low phosphorus availability.
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Affiliation(s)
- Philipp Olt
- Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart, Germany
| | - Wenli Ding
- Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart, Germany
| | - Waltraud X Schulze
- Institute of Biology, Systems Biology, University of Hohenheim, Stuttgart, Germany
| | - Uwe Ludewig
- Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart, Germany
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2
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Entomopathogenic Fungi-Mediated Solubilization and Induction of Fe Related Genes in Melon and Cucumber Plants. J Fungi (Basel) 2023; 9:jof9020258. [PMID: 36836372 PMCID: PMC9960893 DOI: 10.3390/jof9020258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
Endophytic insect pathogenic fungi have a multifunctional lifestyle; in addition to its well-known function as biocontrol agents, it may also help plants respond to other biotic and abiotic stresses, such as iron (Fe) deficiency. This study explores M. brunneum EAMa 01/58-Su strain attributes for Fe acquisition. Firstly, direct attributes include siderophore exudation (in vitro assay) and Fe content in shoots and in the substrate (in vivo assay) were evaluated for three strains of Beauveria bassiana and Metarhizium bruneum. The M. brunneum EAMa 01/58-Su strain showed a great ability to exudate iron siderophores (58.4% surface siderophores exudation) and provided higher Fe content in both dry matter and substrate compared to the control and was therefore selected for further research to unravel the possible induction of Fe deficiency responses, Ferric Reductase Activity (FRA), and relative expression of Fe acquisition genes by qRT-PCR in melon and cucumber plants.. In addition, root priming by M. brunneum EAMa 01/58-Su strain elicited Fe deficiency responses at transcriptional level. Our results show an early up-regulation (24, 48 or 72 h post inoculation) of the Fe acquisition genes FRO1, FRO2, IRT1, HA1, and FIT as well as the FRA. These results highlight the mechanisms involved in the Fe acquisition as mediated by IPF M. brunneum EAMa 01/58-Su strain.
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3
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Xue C, Li W, Shen R, Lan P. Impacts of iron on phosphate starvation-induced root hair growth in Arabidopsis. PLANT, CELL & ENVIRONMENT 2023; 46:215-238. [PMID: 36174546 DOI: 10.1111/pce.14451] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Revised: 04/29/2022] [Accepted: 06/03/2022] [Indexed: 06/16/2023]
Abstract
In Arabidopsis, phosphate starvation (-Pi)-induced responses of primary root and lateral root growth are documented to be correlated with ambient iron (Fe) status. However, whether and how Fe participates in -Pi-induced root hair growth (RHG) remains unclear. Here, responses of RHG to different Fe concentrations under Pi sufficiency/deficiency were verified. Generally, distinct dosage effects of Fe on RHG appeared at both Pi levels, due to the generation of reactive oxygen species. Following analyses using auxin mutants and the phr1 mutant revealed that auxin and the central regulator PHR1 are required for Fe-triggered RHG under -Pi. A further proteomic study indicated that processes of vesicle trafficking and auxin synthesis and transport were affected by Fe under -Pi, which were subsequently validated by using a vesicle trafficking inhibitor, brefeldin A, and an auxin reporter, R2D2. Moreover, vesicle trafficking-mediated recycling of PIN2, an auxin efflux transporter, was notably affected by Fe under -Pi. Correspondingly, root hairs of pin2 mutant displayed attenuated responses to Fe under -Pi. Together, we propose that Fe affects auxin signalling probably by modulating vesicle trafficking, chiefly the PIN2 recycling, which might work jointly with PHR1 on modulating -Pi-induced RHG.
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Affiliation(s)
- Caiwen Xue
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China and University of Chinese Academy of Sceinces, Beijing, China
| | - Wenfeng Li
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Renfang Shen
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China and University of Chinese Academy of Sceinces, Beijing, China
| | - Ping Lan
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, China and University of Chinese Academy of Sceinces, Beijing, China
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4
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Frémont A, Sas E, Sarrazin M, Gonzalez E, Brisson J, Pitre FE, Brereton NJB. Phytochelatin and coumarin enrichment in root exudates of arsenic-treated white lupin. PLANT, CELL & ENVIRONMENT 2022; 45:936-954. [PMID: 34392550 DOI: 10.1111/pce.14163] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Soil contamination with toxic metalloids, such as arsenic, can represent a substantial human health and environmental risk. Some plants are thought to tolerate soil toxicity using root exudation, however, the nature of this response to arsenic remains largely unknown. Here, white lupin plants were exposed to arsenic in a semi-hydroponic system and their exudates were profiled using untargeted liquid chromatography-tandem mass spectrometry. Arsenic concentrations up to 1 ppm were tolerated and led to the accumulation of 12.9 μg As g-1 dry weight (DW) and 411 μg As g-1 DW in above-ground and belowground tissues, respectively. From 193 exuded metabolites, 34 were significantly differentially abundant due to 1 ppm arsenic, including depletion of glutathione disulphide and enrichment of phytochelatins and coumarins. Significant enrichment of phytochelatins in exudates of arsenic-treated plants was further confirmed using exudate sampling with strict root exclusion. The chemical tolerance toolkit in white lupin included nutrient acquisition metabolites as well as phytochelatins, the major intracellular metal-binding detoxification oligopeptides which have not been previously reported as having an extracellular role. These findings highlight the value of untargeted metabolite profiling approaches to reveal the unexpected and inform strategies to mitigate anthropogenic pollution in soils around the world.
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Affiliation(s)
- Adrien Frémont
- University of Montreal-Institut de Recherche en Biologie Végétale (IRBV), Montreal, Quebec, Canada
| | - Eszter Sas
- University of Montreal-Institut de Recherche en Biologie Végétale (IRBV), Montreal, Quebec, Canada
| | | | - Emmanuel Gonzalez
- Canadian Centre for Computational Genomics (C3G)-Department of Human Genetics, McGill University, Montreal, Quebec, Canada
- Microbiome Research Platform-McGill Interdisciplinary Initiative in Infection and Immunity (MI4), Genome Centre, McGill University, Montreal, Quebec, Canada
| | - Jacques Brisson
- University of Montreal-Institut de Recherche en Biologie Végétale (IRBV), Montreal, Quebec, Canada
| | - Frédéric Emmanuel Pitre
- University of Montreal-Institut de Recherche en Biologie Végétale (IRBV), Montreal, Quebec, Canada
- Montreal Botanical Garden, Montreal, Quebec, Canada
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5
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Buoso S, Zamboni A, Franco A, Commisso M, Guzzo F, Varanini Z, Pinton R, Tomasi N, Zanin L. Nodulating white lupins take advantage of the reciprocal interplay between N and P nutritional responses. PHYSIOLOGIA PLANTARUM 2022; 174:e13607. [PMID: 34837246 PMCID: PMC9303408 DOI: 10.1111/ppl.13607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 11/22/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
The low bioavailability of nutrients, especially nitrogen (N) and phosphorus (P), is one of the most limiting factors for crop production. In this study, under N- and P-free nutrient solution (-N-P), nodulating white lupin plants developed some nodules and analogous cluster root structures characterized by different morphological, physiological, and molecular responses than those observed upon single nutrient deficiency (strong acidification of external media, a better nutritional status than -N+P and +N-P plants). The multi-elemental analysis highlighted that the concentrations of nutrients in white lupin plants were mainly affected by P availability. Gene-expression analyses provided evidence of interconnections between N and P nutritional pathways that are active to promote N and P balance in plants. The root exudome was mainly characterized by N availability in nutrient solution, and, in particular, the absence of N and P in the nutrient solution triggered a high release of phenolic compounds, nucleosides monophosphate and saponines by roots. These morphological, physiological, and molecular responses result from a close interplay between N and P nutritional pathways. They contribute to the good development of nodulating white lupin plants when grown on N- and P-free media. This study provides evidence that limited N and P availability in the nutrient solution can promote white lupin-Bradyrhizobium symbiosis, which is favourable for the sustainability of legume production.
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Affiliation(s)
- Sara Buoso
- Department of Agricultural, Food, Environmental and Animal SciencesUniversity of UdineUdineItaly
| | - Anita Zamboni
- Department of BiotechnologyUniversity of VeronaVeronaItaly
| | - Alessandro Franco
- Department of Agricultural, Food, Environmental and Animal SciencesUniversity of UdineUdineItaly
| | - Mauro Commisso
- Department of BiotechnologyUniversity of VeronaVeronaItaly
| | - Flavia Guzzo
- Department of BiotechnologyUniversity of VeronaVeronaItaly
| | - Zeno Varanini
- Department of BiotechnologyUniversity of VeronaVeronaItaly
| | - Roberto Pinton
- Department of Agricultural, Food, Environmental and Animal SciencesUniversity of UdineUdineItaly
| | - Nicola Tomasi
- Department of Agricultural, Food, Environmental and Animal SciencesUniversity of UdineUdineItaly
| | - Laura Zanin
- Department of Agricultural, Food, Environmental and Animal SciencesUniversity of UdineUdineItaly
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6
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Buoso S, Tomasi N, Arkoun M, Maillard A, Jing L, Marroni F, Pluchon S, Pinton R, Zanin L. Transcriptomic and metabolomic profiles of Zea mays fed with urea and ammonium. PHYSIOLOGIA PLANTARUM 2021; 173:935-953. [PMID: 34245168 PMCID: PMC8597056 DOI: 10.1111/ppl.13493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
The simultaneous presence of different N-forms in the rhizosphere leads to beneficial effects on nitrogen (N) nutrition in plants. Although widely used as fertilizers, the occurrence of cross connection between urea and ammonium nutrition has been scarcely studied in plants. Maize fed with a mixture of urea and ammonium displayed a better N-uptake efficiency than ammonium- or urea-fed plants (Buoso et al., Plant Physiol Biochem, 2021a; 162: 613-623). Through multiomic approaches, we provide the molecular characterization of maize response to urea and ammonium nutrition. Several transporters and enzymes involved in N-nutrition were upregulated by all three N-treatments (urea, ammonium, or urea and ammonium). Already after 1 day of treatment, the availability of different N-forms induced specific transcriptomic and metabolomic responses. The combination of urea and ammonium induced a prompt assimilation of N, characterized by high levels of some amino acids in shoots. Moreover, ZmAMT1.1a, ZmGLN1;2, ZmGLN1;5, ZmGOT1, and ZmGOT3, as well transcripts involved in glycolysis-TCA cycle were induced in roots by urea and ammonium mixture. Depending on N-form, even changes in the composition of phytohormones were observed in maize. This study paves the way to formulate guidelines for the optimization of N fertilization to improve N-use efficiency in maize and therefore limit N-losses in the environment.
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Affiliation(s)
- Sara Buoso
- Department of Agricultural, Food, Environmental, and Animal SciencesUniversity of UdineUdine
| | - Nicola Tomasi
- Department of Agricultural, Food, Environmental, and Animal SciencesUniversity of UdineUdine
| | - Mustapha Arkoun
- Laboratoire de Nutrition Végétale, Agroinnovation International—TIMAC AGROSaint‐MaloFrance
| | - Anne Maillard
- Laboratoire de Nutrition Végétale, Agroinnovation International—TIMAC AGROSaint‐MaloFrance
| | - Lun Jing
- Laboratoire de Nutrition Végétale, Agroinnovation International—TIMAC AGROSaint‐MaloFrance
| | - Fabio Marroni
- Department of Agricultural, Food, Environmental, and Animal SciencesUniversity of UdineUdine
| | - Sylvain Pluchon
- Laboratoire de Nutrition Végétale, Agroinnovation International—TIMAC AGROSaint‐MaloFrance
| | - Roberto Pinton
- Department of Agricultural, Food, Environmental, and Animal SciencesUniversity of UdineUdine
| | - Laura Zanin
- Department of Agricultural, Food, Environmental, and Animal SciencesUniversity of UdineUdine
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7
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García MJ, Lucena C, Romera FJ. Ethylene and Nitric Oxide Involvement in the Regulation of Fe and P Deficiency Responses in Dicotyledonous Plants. Int J Mol Sci 2021; 22:ijms22094904. [PMID: 34063156 PMCID: PMC8125717 DOI: 10.3390/ijms22094904] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/29/2021] [Accepted: 04/30/2021] [Indexed: 11/16/2022] Open
Abstract
Iron (Fe) and phosphorus (P) are two essential elements for plant growth. Both elements are abundant in soils but with poor availability for plants, which favor their acquisition by developing morphological and physiological responses in their roots. Although the regulation of the genes related to these responses is not totally known, ethylene (ET) and nitric oxide (NO) have been involved in the activation of both Fe-related and P-related genes. The common involvement of ET and NO suggests that they must act in conjunction with other specific signals, more closely related to each deficiency. Among the specific signals involved in the regulation of Fe- or P-related genes have been proposed Fe-peptides (or Fe ion itself) and microRNAs, like miR399 (P), moving through the phloem. These Fe- or P-related phloem signals could interact with ET/NO and confer specificity to the responses to each deficiency, avoiding the induction of the specific responses when ET/NO increase due to other nutrient deficiencies or stresses. Besides the specificity conferred by these signals, ET itself could confer specificity to the responses to Fe- or P-deficiency by acting through different signaling pathways in each case. Given the above considerations, there are preliminary results suggesting that ET could regulate different nutrient responses by acting both in conjunction with other signals and through different signaling pathways. Because of the close relationship among these two elements, a better knowledge of the physiological and molecular basis of their interaction is necessary to improve their nutrition and to avoid the problems associated with their misuse. As examples of this interaction, it is known that Fe chlorosis can be induced, under certain circumstances, by a P over- fertilization. On the other hand, Fe oxides can have a role in the immobilization of P in soils. Qualitative and quantitative assessment of the dynamic of known Fe- and P-related genes expression, selected ad hoc and involved in each of these deficiencies, would allow us to get a profound knowledge of the processes that regulate the responses to both deficiencies. The better knowledge of the regulation by ET of the responses to these deficiencies is necessary to properly understand the interactions between Fe and P. This will allow the obtention of more efficient varieties in the absorption of P and Fe, and the use of more rational management techniques for P and Fe fertilization. This will contribute to minimize the environmental impacts caused by the use of P and Fe fertilizers (Fe chelates) in agriculture and to adjust the costs for farmers, due to the high prices and/or scarcity of Fe and P fertilizers. This review aims to summarize the latest advances in the knowledge about Fe and P deficiency responses, analyzing the similarities and differences among them and considering the interactions among their main regulators, including some hormones (ethylene) and signaling substances (NO and GSNO) as well as other P- and Fe-related signals.
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Affiliation(s)
- María José García
- Department of Botany, Ecology and Plant Physiology, Campus de Excelencia Internacional Agroalimentario, Universidad de Córdoba, 14071 Córdoba, Spain
- Correspondence:
| | - Carlos Lucena
- Department of Biochemistry and Molecular Biology, Campus de Excelencia Internacional Agroalimentario, Universidad de Córdoba, 14071 Córdoba, Spain;
| | - Francisco Javier Romera
- Department of Agronomy, (DAUCO-María de Maeztu Unit of Excellence) Campus de Excelencia Internacional Agroalimentario, Universidad de Córdoba, 14071 Córdoba, Spain;
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8
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Buoso S, Tomasi N, Said-Pullicino D, Arkoun M, Yvin JC, Pinton R, Zanin L. Characterization of physiological and molecular responses of Zea mays seedlings to different urea-ammonium ratios. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 162:613-623. [PMID: 33774466 DOI: 10.1016/j.plaphy.2021.03.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/16/2021] [Indexed: 05/14/2023]
Abstract
Despite the wide use of urea and ammonium as N-fertilizers, no information is available about the proper ratio useful to maximize the efficiency of their acquisition by crops. Ionomic analyses of maize seedlings fed with five different mixes of urea and ammonium indicated that after 7 days of treatment, the elemental composition of plant tissues was more influenced by ammonium in the nutrient solution than by urea. Within 24 h, similar high affinity influx rates of ammonium were measured in ammonium-treated seedlings, independently from the amount of the cation present in the nutrient solution (from 0.5 to 2.0 mM N), and it was confirmed by the similar accumulation of 15N derived from ammonium source. After 7 days, some changes in ammonium acquisition occurred among treatments, with the highest ammonium uptake efficiency when the urea-to-ammonium ratio was 3:1. Gene expression analyses of enzymes and transporters involved in N nutrition highlight a preferential induction of the cytosolic N-assimilatory pathway (via GS, ASNS) when both urea and ammonium were supplied in conjunction, this response might explain the higher N-acquisition efficiency when both sources are applied. In conclusion, this study provides new insights on plant responses to mixes of N sources that maximize the N-uptake efficiency by crops and thus could allow to adapt agronomic practices in order to limit the economic and environmental impact of N-fertilization.
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Affiliation(s)
- Sara Buoso
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy.
| | - Nicola Tomasi
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy.
| | - Daniel Said-Pullicino
- Department of Agricultural, Forest and Food Sciences, University of Torino, Grugliasco, Italy.
| | - Mustapha Arkoun
- Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation, Groupe Roullier, Saint-Malo, France.
| | - Jean-Claude Yvin
- Laboratoire de Nutrition Végétale, Centre Mondial de l'Innovation, Groupe Roullier, Saint-Malo, France.
| | - Roberto Pinton
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy.
| | - Laura Zanin
- Department of Agricultural, Food, Environmental and Animal Sciences, University of Udine, Udine, Italy.
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9
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Pueyo JJ, Quiñones MA, Coba de la Peña T, Fedorova EE, Lucas MM. Nitrogen and Phosphorus Interplay in Lupin Root Nodules and Cluster Roots. FRONTIERS IN PLANT SCIENCE 2021; 12:644218. [PMID: 33747024 PMCID: PMC7966414 DOI: 10.3389/fpls.2021.644218] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 01/25/2021] [Indexed: 05/17/2023]
Abstract
Nitrogen (N) and phosphorus (P) are two major plant nutrients, and their deficiencies often limit plant growth and crop yield. The uptakes of N or P affect each other, and consequently, understanding N-P interactions is fundamental. Their signaling mechanisms have been studied mostly separately, and integrating N-P interactive regulation is becoming the aim of some recent works. Lupins are singular plants, as, under N and P deficiencies, they are capable to develop new organs, the N2-fixing symbiotic nodules, and some species can also transform their root architecture to form cluster roots, hundreds of short rootlets that alter their metabolism to induce a high-affinity P transport system and enhance synthesis and secretion of organic acids, flavonoids, proteases, acid phosphatases, and proton efflux. These modifications lead to mobilization in the soil of, otherwise unavailable, P. White lupin (Lupinus albus) represents a model plant to study cluster roots and for understanding plant acclimation to nutrient deficiency. It tolerates simultaneous P and N deficiencies and also enhances uptake of additional nutrients. Here, we present the structural and functional modifications that occur in conditions of P and N deficiencies and lead to the organogenesis and altered metabolism of nodules and cluster roots. Some known N and P signaling mechanisms include different factors, including phytohormones and miRNAs. The combination of the individual N and P mechanisms uncovers interactive regulation pathways that concur in nodules and cluster roots. L. albus interlinks N and P recycling processes both in the plant itself and in nature.
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Affiliation(s)
- José J. Pueyo
- Institute of Agricultural Sciences, ICA-CSIC, Madrid, Spain
| | | | | | - Elena E. Fedorova
- K.A. Timiryazev Institute of Plant Physiology, Russian Academy of Science, Moscow, Russia
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10
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Angulo M, García MJ, Alcántara E, Pérez-Vicente R, Romera FJ. Comparative Study of Several Fe Deficiency Responses in the Arabidopsis thaliana Ethylene Insensitive Mutants ein2-1 and ein2-5. PLANTS (BASEL, SWITZERLAND) 2021; 10:262. [PMID: 33573082 PMCID: PMC7912600 DOI: 10.3390/plants10020262] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/21/2021] [Accepted: 01/26/2021] [Indexed: 01/01/2023]
Abstract
Iron (Fe) is an essential micronutrient for plants since it participates in essential processes such as photosynthesis, respiration and nitrogen assimilation. Fe is an abundant element in most soils, but its availability for plants is low, especially in calcareous soils. Fe deficiency causes Fe chlorosis, which can affect the productivity of the affected crops. Plants favor Fe acquisition by developing morphological and physiological responses in their roots. Ethylene (ET) and nitric oxide (NO) have been involved in the induction of Fe deficiency responses in dicot (Strategy I) plants, such as Arabidopsis. In this work, we have conducted a comparative study on the development of subapical root hairs, of the expression of the main Fe acquisition genes FRO2 and IRT1, and of the master transcription factor FIT, in two Arabidopsis thaliana ET insensitive mutants, ein2-1 and ein2-5, affected in EIN2, a critical component of the ET transduction pathway. The results obtained show that both mutants do not induce subapical root hairs either under Fe deficiency or upon treatments with the ET precursor 1-aminocyclopropane-1-carboxylate (ACC) and the NO donor S-nitrosoglutathione (GSNO). By contrast, both of them upregulate the Fe acquisition genes FRO2 and IRT1 (and FIT) under Fe deficiency. However, the upregulation was different when the mutants were exposed to ET [ACC and cobalt (Co), an ET synthesis inhibitor] and GSNO treatments. All these results clearly support the participation of ET and NO, through EIN2, in the regulation of subapical root hairs and Fe acquisition genes. The results will be discussed, taking into account the role of both ET and NO in the regulation of Fe deficiency responses.
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Affiliation(s)
- Macarena Angulo
- Department of Agronomy, Campus de Excelencia Internacional Agroalimentario CeiA3 de Rabanales, Universidad de Córdoba, Edificio Celestino Mutis, 14071 Córdoba, Spain; (M.A.); (E.A.); (F.J.R.)
| | - María José García
- Department of Botany, Ecology and Plant Physiology, Campus de Excelencia Internacional Agroalimentario CeiA3 de Rabanales, Universidad de Córdoba, Edificio Celestino Mutis, 14071 Córdoba, Spain;
| | - Esteban Alcántara
- Department of Agronomy, Campus de Excelencia Internacional Agroalimentario CeiA3 de Rabanales, Universidad de Córdoba, Edificio Celestino Mutis, 14071 Córdoba, Spain; (M.A.); (E.A.); (F.J.R.)
| | - Rafael Pérez-Vicente
- Department of Botany, Ecology and Plant Physiology, Campus de Excelencia Internacional Agroalimentario CeiA3 de Rabanales, Universidad de Córdoba, Edificio Celestino Mutis, 14071 Córdoba, Spain;
| | - Francisco Javier Romera
- Department of Agronomy, Campus de Excelencia Internacional Agroalimentario CeiA3 de Rabanales, Universidad de Córdoba, Edificio Celestino Mutis, 14071 Córdoba, Spain; (M.A.); (E.A.); (F.J.R.)
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11
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García MJ, Angulo M, García C, Lucena C, Alcántara E, Pérez-Vicente R, Romera FJ. Influence of Ethylene Signaling in the Crosstalk Between Fe, S, and P Deficiency Responses in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2021; 12:643585. [PMID: 33859661 PMCID: PMC8042388 DOI: 10.3389/fpls.2021.643585] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 02/22/2021] [Indexed: 05/09/2023]
Abstract
To cope with P, S, or Fe deficiency, dicot plants, like Arabidopsis, develop several responses (mainly in their roots) aimed to facilitate the mobilization and uptake of the deficient nutrient. Within these responses are the modification of root morphology, an increased number of transporters, augmented synthesis-release of nutrient solubilizing compounds and the enhancement of some enzymatic activities, like ferric reductase activity (FRA) or phosphatase activity (PA). Once a nutrient has been acquired in enough quantity, these responses should be switched off to minimize energy costs and toxicity. This implies that they are tightly regulated. Although the responses to each deficiency are induced in a rather specific manner, crosstalk between them is frequent and in such a way that P, S, or Fe deficiency can induce responses related to the other two nutrients. The regulation of the responses is not totally known but some hormones and signaling substances have been involved, either as activators [ethylene (ET), auxin, nitric oxide (NO)], or repressors [cytokinins (CKs)]. The plant hormone ET is involved in the regulation of responses to P, S, or Fe deficiency, and this could partly explain the crosstalk between them. In spite of these crosslinks, it can be hypothesized that, to confer the maximum specificity to the responses of each deficiency, ET should act in conjunction with other signals and/or through different transduction pathways. To study this latter possibility, several responses to P, S, or Fe deficiency have been studied in the Arabidopis wild-type cultivar (WT) Columbia and in some of its ethylene signaling mutants (ctr1, ein2-1, ein3eil1) subjected to the three deficiencies. Results show that key elements of the ET transduction pathway, like CTR1, EIN2, and EIN3/EIL1, can play a role in the crosstalk among nutrient deficiency responses.
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Affiliation(s)
- María José García
- Department of Botany, Ecology and Plant Physiology, Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Macarena Angulo
- Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Carlos García
- Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Carlos Lucena
- Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Esteban Alcántara
- Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Rafael Pérez-Vicente
- Department of Botany, Ecology and Plant Physiology, Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain
| | - Francisco Javier Romera
- Department of Agronomy (DAUCO-María de Maeztu Unit of Excellence), Edificio Celestino Mutis, Campus de Rabanales CeiA3, Universidad de Córdoba, Córdoba, Spain
- *Correspondence: Francisco Javier Romera
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12
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Li M, Duan R, Hao W, Li Q, Arslan M, Liu P, Qi X, Huang X, El-Din MG, Liang P. High-rate nitrogen removal from carbon limited wastewater using sulfur-based constructed wetland: Impact of sulfur sources. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 744:140969. [PMID: 32721681 DOI: 10.1016/j.scitotenv.2020.140969] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/12/2020] [Accepted: 07/12/2020] [Indexed: 06/11/2023]
Abstract
This study aims to explore the application of sulfur-based constructed wetlands (CWs) for effective nitrogen (N) removal from wastewater. Two solid sulfur sources namely elemental sulfur (S0) and pyrite (FeS2) were used as substrates in two CWs, i.e. S-CW and P-CW, respectively. The CWs were vegetated with a common wetland plant Iris pseudacorus, and were operated to investigate the effects of hydraulic retention time (HRT) and temperature on N removal. The use of S0 resulted in the highest denitrification rate (19.0 ± 7.5 g m-2 d-1), whereas up to 20 times slower total inorganic nitrogen (TIN) removal was observed with FeS2. Different sulfur sources had negligible effects on the growth of I. pseudacorus, but the element contents (e.g., N, S, and P) within the plant tissues were different. Iris roots in S-CW had higher S content compared with those in P-CW, which resulted in the difference in shoots colors. The characteristics of rhizospheric microbial communities were closely related to the sulfur and nitrogen sources. Briefly, denitrifying and sulfur-oxidizing genera (e.g., Denitratisoma, Sulfurimonas, Thiobacillus) were dominating in the S-CW, suggesting the occurrence of both autotrophic and heterotrophic denitrification processes in the wetland. On the other hand, nitrifying bacteria were more abundant (e.g. Nitrospira, Piscinibacter) in the P-CW. S0 layer and rhizosphere accounted for 99.3% of nitrogen removal and the former part most likely played important roles with a decrease in HRT. Low temperature strongly affected the rate and efficiency of denitrification but recovered to 49.2 ± 25.8% when added with 30 mg L-1 sodium acetate. This study broadens the applications of sulfur-based CWs and provides a promising management strategy for denitrification at low temperatures.
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Affiliation(s)
- Meng Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China; International Joint Laboratory on Low Carbon Clean Energy Innovation, Tsinghua University, Beijing 100084, PR China
| | - Rui Duan
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China; International Joint Laboratory on Low Carbon Clean Energy Innovation, Tsinghua University, Beijing 100084, PR China
| | - Wen Hao
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China; International Joint Laboratory on Low Carbon Clean Energy Innovation, Tsinghua University, Beijing 100084, PR China
| | - Qingcheng Li
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Muhammad Arslan
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Panpan Liu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Xiang Qi
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Mohamed Gamal El-Din
- Department of Civil and Environmental Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Peng Liang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
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Zhou Y, Neuhäuser B, Neumann G, Ludewig U. LaALMT1 mediates malate release from phosphorus-deficient white lupin root tips and metal root to shoot translocation. PLANT, CELL & ENVIRONMENT 2020; 43:1691-1706. [PMID: 32239684 DOI: 10.1111/pce.13762] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/12/2020] [Accepted: 03/19/2020] [Indexed: 05/29/2023]
Abstract
Under phosphorus (P) deficiency, Lupinus albus (white lupin) releases large amounts of organic acid anions from specialized root structures, so-called cluster or proteoid roots, to mobilize and acquire sparingly soluble phosphates from a restricted soil volume. The molecular mechanisms underlying this release and its regulation are, however, poorly understood. Here, we identified a gene belonging to the aluminium (Al)-activated malate transporter (ALMT) family that specifically contributes to malate, but not citrate release. This gene, LaALMT1, was most prominently expressed in the root apices under P deficiency, including those of cluster roots and was also detected in the root stele. Contrary to several ALMT homologs in other species, the expression was not stimulated, but moderately repressed by Al. Aluminium-independent malate currents were recorded from the plasma membrane localized LaALMT1 expressed in Xenopus oocytes. In composite lupins with transgenic roots, LaALMT1 was efficiently mutated by CRISPR-Cas9, leading to diminished malate efflux and lower xylem sap malate concentrations. When grown in an alkaline P-deficient soil, mutant shoot phosphate concentrations were similar, but iron and potassium concentrations were diminished in old leaves, suggesting a role for ALMT1 in metal root to shoot translocation, a function that was also supported by growth in hydroponics.
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Affiliation(s)
- Yaping Zhou
- Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart, Germany
| | - Benjamin Neuhäuser
- Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart, Germany
| | - Günter Neumann
- Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart, Germany
| | - Uwe Ludewig
- Institute of Crop Science, Nutritional Crop Physiology, University of Hohenheim, Stuttgart, Germany
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14
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Galatro A, Ramos-Artuso F, Luquet M, Buet A, Simontacchi M. An Update on Nitric Oxide Production and Role Under Phosphorus Scarcity in Plants. FRONTIERS IN PLANT SCIENCE 2020; 11:413. [PMID: 32351528 PMCID: PMC7174633 DOI: 10.3389/fpls.2020.00413] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/23/2020] [Indexed: 05/03/2023]
Abstract
Phosphate (P) is characterized by its low availability and restricted mobility in soils, and also by a high redistribution capacity inside plants. In order to maintain P homeostasis in nutrient restricted conditions, plants have developed mechanisms which enable P acquisition from the soil solution, and an efficient reutilization of P already present in plant cells. Nitric oxide (NO) is a bioactive molecule with a plethora of functions in plants. Its endogenous synthesis depends on internal and environmental factors, and is closely tied with nitrogen (N) metabolism. Furthermore, there is evidence demonstrating that N supply affects P homeostasis and that P deficiency impacts on N assimilation. This review will provide an overview on how NO levels in planta are affected by P deficiency, the interrelationship with N metabolism, and a summary of the current understanding about the influence of this reactive N species over the processes triggered by P starvation, which could modify P use efficiency.
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Affiliation(s)
- Andrea Galatro
- Instituto de Fisiología Vegetal (INFIVE), CONICET-UNLP, La Plata, Argentina
| | - Facundo Ramos-Artuso
- Instituto de Fisiología Vegetal (INFIVE), CONICET-UNLP, La Plata, Argentina
- Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
| | - Melisa Luquet
- Instituto de Fisiología Vegetal (INFIVE), CONICET-UNLP, La Plata, Argentina
| | - Agustina Buet
- Instituto de Fisiología Vegetal (INFIVE), CONICET-UNLP, La Plata, Argentina
- Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
| | - Marcela Simontacchi
- Instituto de Fisiología Vegetal (INFIVE), CONICET-UNLP, La Plata, Argentina
- Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata, La Plata, Argentina
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Valentinuzzi F, Venuti S, Pii Y, Marroni F, Cesco S, Hartmann F, Mimmo T, Morgante M, Pinton R, Tomasi N, Zanin L. Common and specific responses to iron and phosphorus deficiencies in roots of apple tree (Malus × domestica). PLANT MOLECULAR BIOLOGY 2019; 101:129-148. [PMID: 31267256 DOI: 10.1007/s11103-019-00896-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 06/24/2019] [Indexed: 05/22/2023]
Abstract
Iron and phosphorus are abundant elements in soils but poorly available for plant nutrition. The availability of these two nutrients represents a major constraint for fruit tree cultivation such as apple (Malus × domestica) leading very often to a decrease of fruit productivity and quality worsening. Aim of this study was to characterize common and specific features of plant response to Fe and P deficiencies by ionomic, transcriptomic and exudation profiling of apple roots. Under P deficiency, the root release of oxalate and flavonoids increased. Genes encoding for transcription factors and transporters involved in the synthesis and release of root exudates were upregulated by P-deficient roots, as well as those directly related to P acquisition. In Fe-deficiency, plants showed an over-accumulation of P, Zn, Cu and Mn and induced the transcription of those genes involved in the mechanisms for the release of Fe-chelating compounds and Fe mobilization inside the plants. The intriguing modulation in roots of some transcription factors, might indicate that, in this condition, Fe homeostasis is regulated by a FIT-independent pathway. In the present work common and specific features of apple response to Fe and P deficiency has been reported. In particular, data indicate similar modulation of a. 230 genes, suggesting the occurrence of a crosstalk between the two nutritional responses involving the transcriptional regulation, shikimate pathway, and the root release of exudates.
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Affiliation(s)
- Fabio Valentinuzzi
- Faculty of Science and Technology, Free University of Bolzano, Piazza Università 5, 39100, Bolzano, Italy
| | - Silvia Venuti
- Dipartimento di Scienze Agroambientali, Alimentari e Animali, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - Youry Pii
- Faculty of Science and Technology, Free University of Bolzano, Piazza Università 5, 39100, Bolzano, Italy
| | - Fabio Marroni
- Dipartimento di Scienze Agroambientali, Alimentari e Animali, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - Stefano Cesco
- Faculty of Science and Technology, Free University of Bolzano, Piazza Università 5, 39100, Bolzano, Italy
| | - Felix Hartmann
- Faculty of Science and Technology, Free University of Bolzano, Piazza Università 5, 39100, Bolzano, Italy
| | - Tanja Mimmo
- Faculty of Science and Technology, Free University of Bolzano, Piazza Università 5, 39100, Bolzano, Italy
| | - Michele Morgante
- Dipartimento di Scienze Agroambientali, Alimentari e Animali, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - Roberto Pinton
- Dipartimento di Scienze Agroambientali, Alimentari e Animali, University of Udine, via delle Scienze 206, 33100, Udine, Italy
| | - Nicola Tomasi
- Dipartimento di Scienze Agroambientali, Alimentari e Animali, University of Udine, via delle Scienze 206, 33100, Udine, Italy.
| | - Laura Zanin
- Dipartimento di Scienze Agroambientali, Alimentari e Animali, University of Udine, via delle Scienze 206, 33100, Udine, Italy
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16
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Physiological and RNA sequencing data of white lupin plants grown under Fe and P deficiency. Data Brief 2019; 25:104069. [PMID: 31211210 PMCID: PMC6562269 DOI: 10.1016/j.dib.2019.104069] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 05/20/2019] [Accepted: 05/21/2019] [Indexed: 11/23/2022] Open
Abstract
This DIB article provides details about transcriptional and physiological response of Fe- and P-deficient white lupin roots, an extensive and complete description of plant response is shown in the research article “Physiological and transcriptomic data highlight common features between iron and phosphorus acquisition mechanisms in white lupin roots” Venuti et al. [1]. White lupin plants were grown under hydroponic system and three different nutritional regimes: Fe deficiency (-Fe), P deficiency (-P), or Fe and P sufficiency (+P + Fe). Depending on nutritional treatment, white lupin plants showed changes in the fresh weights, in root external acidification and FeIII-reductase activity. Moreover, the transcriptomic changes occurring in apices and clusters of Fe-deficient lupin roots were investigated and compared with differences of gene expression occurring in P-deficient plants (-P) and in Fe- and P-sufficient plants (+P + Fe). Transcriptomic data are available in the public repository Gene Expression Omnibus (http://www.ncbi.nlm.nih.gov/geo) under the series entry (GSE112220). The annotation, mapping and enrichment analyses of differentially modulated transcripts were assessed.
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