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Blatt-Janmaat KL, Neumann S, Ziegler J, Peters K. Host Tree and Geography Induce Metabolic Shifts in the Epiphytic Liverwort Radula complanata. PLANTS (BASEL, SWITZERLAND) 2023; 12:571. [PMID: 36771656 PMCID: PMC9919105 DOI: 10.3390/plants12030571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 01/11/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
Bryophytes are prolific producers of unique, specialized metabolites that are not found in other plants. As many of these unique natural products are potentially interesting, for example, pharmacological use, variations in the production regarding ecological or environmental conditions have not often been investigated. Here, we investigate metabolic shifts in the epiphytic Radula complanata L. (Dumort) with regard to different environmental conditions and the type of phorophyte (host tree). Plant material was harvested from three different locations in Sweden, Germany, and Canada and subjected to untargeted liquid chromatography high-resolution mass-spectrometry (UPLC/ESI-QTOF-MS) and data-dependent acquisition (DDA-MS). Using multivariate statistics, variable selection methods, in silico compound identification, and compound classification, a large amount of variation (39%) in the metabolite profiles was attributed to the type of host tree and 25% to differences in environmental conditions. We identified 55 compounds to vary significantly depending on the host tree (36 on the family level) and 23 compounds to characterize R. complanata in different environments. Taken together, we found metabolic shifts mainly in primary metabolites that were associated with the drought response to different humidity levels. The metabolic shifts were highly specific to the host tree, including mostly specialized metabolites suggesting high levels of ecological interaction. As R. complanata is a widely distributed generalist species, we found it to flexibly adapt its metabolome according to different conditions. We found metabolic composition to also mirror the constitution of the habitat, which makes it interesting for conservation measures.
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Affiliation(s)
- Kaitlyn L. Blatt-Janmaat
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
- Bioinformatics and Scientific Data, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Steffen Neumann
- Bioinformatics and Scientific Data, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
| | - Jörg Ziegler
- Molecular Signal Processing, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
| | - Kristian Peters
- Bioinformatics and Scientific Data, Leibniz Institute of Plant Biochemistry, 06120 Halle (Saale), Germany
- German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103 Leipzig, Germany
- Institute of Biology/Geobotany and Botanical Garden, Martin Luther University Halle-Wittenberg, 06108 Halle (Saale), Germany
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Murawska-Wlodarczyk K, Korzeniak U, Chlebicki A, Mazur E, Dietrich CC, Babst-Kostecka A. Metalliferous habitats and seed microbes affect the seed morphology and reproductive strategy of Arabidopsis halleri. PLANT AND SOIL 2022; 472:175-192. [PMID: 36389645 PMCID: PMC9648182 DOI: 10.1007/s11104-021-05203-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
PURPOSE Plant reproduction in metalliferous habitats is challenged by elevated concentrations of metal trace elements in soil. As part of their survival strategy, metal-tolerant plants have adjusted reproductive traits, including seed morphology, dormancy, and germination rate. These traits are particularly relevant, yet poorly understood, in metal hyperaccumulators that are promising candidates for phytoremediation. METHODS We assessed seed shape characteristics, dormancy, and germination rate in the hyperaccumulating model species Arabidopsis halleri. Seed morphological parameters were evaluated using seeds collected from two metalliferous and two non-metalliferous sites (~ 1000 seeds per location). We also addressed the potential influence of seed surface-associated microbes and endophytic fungi on germination success. RESULTS Seeds from non-metallicolous populations were on average 18% bigger than those from metal-contaminated post-mining sites, which contrasts the general expectation about reproductive parts in metallicolous plants. Irrespective of their origin, surface-sterilized seeds had up to ~ 20% higher germination rates and germinated earlier than non-sterilized seeds, hinting at a negative effect of seed-associated microbial communities. Surface sterilization also facilitated the emergence of an endophytic fungus (Aspergillus niger) that is a known seed-borne pathogen. Interestingly, A. niger actually promoted germination in surface-sterilized seeds from some locations. CONCLUSION Despite species-wide metal tolerance in A. halleri, metalliferous conditions seem to differently affect reproductive traits compared to non-metalliferous environments (e.g., smaller seeds). Yet, higher germination rates in these populations hint at the potential of A. halleri to successfully colonize post-mining habitats. This process is modulated by site-specific interactions with seed microbiota.
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Affiliation(s)
| | - Urszula Korzeniak
- Department of Ecology, W. Szafer Institute of Botany Polish Academy of Sciences, Krakow, Poland
| | - Andrzej Chlebicki
- Department of Ecology, W. Szafer Institute of Botany Polish Academy of Sciences, Krakow, Poland
| | - Edyta Mazur
- Department of Ecology, W. Szafer Institute of Botany Polish Academy of Sciences, Krakow, Poland
| | - Charlotte C Dietrich
- Department of Ecology, W. Szafer Institute of Botany Polish Academy of Sciences, Krakow, Poland
| | - Alicja Babst-Kostecka
- Department of Environmental Science, The University of Arizona, Tucson, AZ, USA
- Department of Ecology, W. Szafer Institute of Botany Polish Academy of Sciences, Krakow, Poland
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He L, Ren Y, Zeng W, Wu X, Shen L, Yu R, Liu Y, Li J. Deciphering the Endophytic and Rhizospheric Microbial Communities of a Metallophyte Commelina communis in Different Cu-Polluted Soils. Microorganisms 2021; 9:microorganisms9081689. [PMID: 34442769 PMCID: PMC8399850 DOI: 10.3390/microorganisms9081689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 11/24/2022] Open
Abstract
Metallophytes microbiota play a key role in plant growth and resistance to heavy metal stress. Comparing to the well-studied single or some specific plant growth-promoting (PGP) bacterial strains, our current understanding of the structural and functional variations of microbiome of metallophytes is still limited. Here, we systematically investigated the endophytic and rhizosphere bacterial community profiles of a metallophyte Commelina communis growing in different Cu-polluted soils by high-throughput sequencing technology. The results showed that the rhizosphere communities of C. communis exhibited a much higher level of diversity and richness than the endosphere communities. Meanwhile, shifts in the bacterial community composition were observed between the rhizosphere and endosphere of C. communis, indicating plant compartment was a strong driver for the divergence between rhizosphere and endosphere community. Among the environmental factors, soil Cu content, followed by OM, TP and TN, played major roles in shaping the bacterial community structure of C. communis. At the highly Cu-contaminated site, Pseudomonas and Sphingomonas were the predominant genera in the endophytic and rhizospheric bacterial communities, respectively, which might enhance copper tolerance as PGP bacteria. In summary, our findings will be useful to better understand metallophyte–microbe interactions and select suitable bacterial taxa when facilitating phytoremediation.
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Affiliation(s)
- Li He
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Key Laboratory of Biometallurgy, Ministry of Education, Central South University (CSU), Changsha 410083, China
| | - Yanzhen Ren
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Key Laboratory of Biometallurgy, Ministry of Education, Central South University (CSU), Changsha 410083, China
| | - Weimin Zeng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Key Laboratory of Biometallurgy, Ministry of Education, Central South University (CSU), Changsha 410083, China
| | - Xueling Wu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Key Laboratory of Biometallurgy, Ministry of Education, Central South University (CSU), Changsha 410083, China
| | - Li Shen
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Key Laboratory of Biometallurgy, Ministry of Education, Central South University (CSU), Changsha 410083, China
| | - Runlan Yu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Key Laboratory of Biometallurgy, Ministry of Education, Central South University (CSU), Changsha 410083, China
| | - Yuandong Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Key Laboratory of Biometallurgy, Ministry of Education, Central South University (CSU), Changsha 410083, China
| | - Jiaokun Li
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; (L.H.); (Y.R.); (W.Z.); (X.W.); (L.S.); (R.Y.); (Y.L.)
- Correspondence:
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