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Hofmann D, Thiele B, Siebers M, Rahmati M, Schütz V, Jeong S, Cui J, Bigler L, Held F, Wu B, Babic N, Kovacic F, Hamacher J, Hölzl G, Dörmann P, Schulz M. Implications of Below-Ground Allelopathic Interactions of Camelina sativa and Microorganisms for Phosphate Availability and Habitat Maintenance. PLANTS (BASEL, SWITZERLAND) 2023; 12:2815. [PMID: 37570969 PMCID: PMC10421311 DOI: 10.3390/plants12152815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023]
Abstract
Toxic breakdown products of young Camelina sativa (L.) Crantz, glucosinolates can eliminate microorganisms in the soil. Since microorganisms are essential for phosphate cycling, only insensitive microorganisms with phosphate-solubilizing activity can improve C. sativa's phosphate supply. In this study, 33P-labeled phosphate, inductively coupled plasma mass spectrometry and pot experiments unveiled that not only Trichoderma viride and Pseudomonas laurentiana used as phosphate-solubilizing inoculants, but also intrinsic soil microorganisms, including Penicillium aurantiogriseum, and the assemblies of root-colonizing microorganisms solubilized as well phosphate from apatite, trigger off competitive behavior between the organisms. Driving factors in the competitiveness are plant and microbial secondary metabolites, while glucosinolates of Camelina and their breakdown products are regarded as key compounds that inhibit the pathogen P. aurantiogriseum, but also seem to impede root colonization of T. viride. On the other hand, fungal diketopiperazine combined with glucosinolates is fatal to Camelina. The results may contribute to explain the contradictory effects of phosphate-solubilizing microorganisms when used as biofertilizers. Further studies will elucidate impacts of released secondary metabolites on coexisting microorganisms and plants under different environmental conditions.
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Affiliation(s)
- Diana Hofmann
- IBG-3: Agrosphäre, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany; (D.H.); (B.T.); (M.R.); (B.W.)
| | - Björn Thiele
- IBG-3: Agrosphäre, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany; (D.H.); (B.T.); (M.R.); (B.W.)
| | - Meike Siebers
- IMBIO Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, 53115 Bonn, Germany (V.S.); (G.H.); (P.D.)
| | - Mehdi Rahmati
- IBG-3: Agrosphäre, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany; (D.H.); (B.T.); (M.R.); (B.W.)
- Department of Soil Science and Engineering, University of Maragheh, Maragheh 83111-55181, Iran
| | - Vadim Schütz
- IMBIO Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, 53115 Bonn, Germany (V.S.); (G.H.); (P.D.)
| | - Seungwoo Jeong
- IMBIO Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, 53115 Bonn, Germany (V.S.); (G.H.); (P.D.)
| | - Jiaxin Cui
- IMBIO Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, 53115 Bonn, Germany (V.S.); (G.H.); (P.D.)
| | - Laurent Bigler
- Department of Chemistry, University of Zurich, CH-8057 Zurich, Switzerland; (L.B.); (F.H.)
| | - Federico Held
- Department of Chemistry, University of Zurich, CH-8057 Zurich, Switzerland; (L.B.); (F.H.)
| | - Bei Wu
- IBG-3: Agrosphäre, Forschungszentrum Jülich GmbH, 52428 Jülich, Germany; (D.H.); (B.T.); (M.R.); (B.W.)
| | - Nikolina Babic
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University of Düsseldorf and Forschungszentrum Jülich GmbH, 52428 Jülich, Germany (F.K.)
| | - Filip Kovacic
- Institute of Molecular Enzyme Technology, Heinrich-Heine-University of Düsseldorf and Forschungszentrum Jülich GmbH, 52428 Jülich, Germany (F.K.)
| | - Joachim Hamacher
- Plant Diseases and Crop Protection, Institute of Crop Science and Resource Conservation, University of Bonn, 53115 Bonn, Germany;
| | - Georg Hölzl
- IMBIO Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, 53115 Bonn, Germany (V.S.); (G.H.); (P.D.)
| | - Peter Dörmann
- IMBIO Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, 53115 Bonn, Germany (V.S.); (G.H.); (P.D.)
| | - Margot Schulz
- IMBIO Institute of Molecular Physiology and Biotechnology of Plants, University of Bonn, 53115 Bonn, Germany (V.S.); (G.H.); (P.D.)
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Ainalidou A, Bouzoukla F, Menkissoglu-Spiroudi U, Vokou D, Karamanoli K. Impacts of Decaying Aromatic Plants on the Soil Microbial Community and on Tomato Seedling Growth and Metabolism: Suppression or Stimulation? PLANTS 2021; 10:plants10091848. [PMID: 34579381 PMCID: PMC8471824 DOI: 10.3390/plants10091848] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/29/2021] [Accepted: 09/02/2021] [Indexed: 11/16/2022]
Abstract
This study provides insight into changes in the features of tomato seedlings growing in soils enriched with spearmint, peppermint, or rosemary leaves and into changes in the microbial communities of these soils used as seedbeds; an organic amendment was also applied as a positive control. While the soil microbial community flourished in the presence of all three aromatic plants, tomato growth was inhibited or stimulated depending on the plant that was used. More specifically, phospholipid fatty acid (PLFA) analysis showed an increase in the total microbial biomass and in the biomass of all the groups examined, except for actinobacteria, and changes in the microbial community structure, with Gram-negative bacteria and fungi being favoured in the mint treatments, in which the microbial biomass was maximized. Seedlings from the rosemary treatment were entirely inhibited; they were at the open-cotyledon stage throughout the experiment. Seedlings from the mint treatments were the heaviest, longest, and had the highest chlorophyll content and photosynthetic yield. Metabolomic analysis showed metabolism enhancement associated with both growth and priming in seedlings from the mint treatments and disruption of metabolic pathways in those from the rosemary treatment. There is a great potential for applying these aromatic plants as soil amendments and as either biostimulants of plant growth or as herbicides.
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Affiliation(s)
- Aggeliki Ainalidou
- Laboratory of Agricultural Chemistry, Faculty of Agriculture Forestry and Natural Environment, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.A.); (F.B.)
| | - Foteini Bouzoukla
- Laboratory of Agricultural Chemistry, Faculty of Agriculture Forestry and Natural Environment, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.A.); (F.B.)
| | - Urania Menkissoglu-Spiroudi
- Pesticide Science Laboratory, Faculty of Agriculture Forestry and Natural Environment, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Despoina Vokou
- Department of Ecology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Correspondence: (D.V.); (K.K.)
| | - Katerina Karamanoli
- Laboratory of Agricultural Chemistry, Faculty of Agriculture Forestry and Natural Environment, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (A.A.); (F.B.)
- Correspondence: (D.V.); (K.K.)
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Plaszkó T, Szűcs Z, Vasas G, Gonda S. Effects of Glucosinolate-Derived Isothiocyanates on Fungi: A Comprehensive Review on Direct Effects, Mechanisms, Structure-Activity Relationship Data and Possible Agricultural Applications. J Fungi (Basel) 2021; 7:539. [PMID: 34356918 PMCID: PMC8305656 DOI: 10.3390/jof7070539] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/24/2021] [Accepted: 07/03/2021] [Indexed: 12/29/2022] Open
Abstract
Plants heavily rely on chemical defense systems against a variety of stressors. The glucosinolates in the Brassicaceae and some allies are the core molecules of one of the most researched such pathways. These natural products are enzymatically converted into isothiocyanates (ITCs) and occasionally other defensive volatile organic constituents (VOCs) upon fungal challenge or tissue disruption to protect the host against the stressor. The current review provides a comprehensive insight on the effects of the isothiocyanates on fungi, including, but not limited to mycorrhizal fungi and pathogens of Brassicaceae. In the review, our current knowledge on the following topics are summarized: direct antifungal activity and the proposed mechanisms of antifungal action, QSAR (quantitative structure-activity relationships), synergistic activity of ITCs with other agents, effects of ITCs on soil microbial composition and allelopathic activity. A detailed insight into the possible applications is also provided: the literature of biofumigation studies, inhibition of post-harvest pathogenesis and protection of various products including grains and fruits is also reviewed herein.
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Affiliation(s)
- Tamás Plaszkó
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, 4032 Debrecen, Hungary
| | - Zsolt Szűcs
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
- Healthcare Industry Institute, University of Debrecen, 4032 Debrecen, Hungary
| | - Gábor Vasas
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
| | - Sándor Gonda
- Department of Botany, Division of Pharmacognosy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary; (T.P.); (Z.S.); (G.V.)
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