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Increased tolerance to organic xenobiotics following recent allopolyploidy in Spartina (Poaceae)
- Source :
- Plant Science, Plant Science, 2019, 280, pp.143-154. ⟨10.1016/j.plantsci.2018.11.005⟩, Plant Science, Elsevier, 2019, 280, pp.143-154. ⟨10.1016/j.plantsci.2018.11.005⟩
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- International audience; Genome doubling or polyploidy is a widespread phenomenon in plants where it has important evolutionary consequences affecting the species distribution and ecology. PAHs are ubiquitous organic pollutants, which represent a major environmental concern. Recent data showed that tolerance to organic xenobiotics involve specific signaling pathways, and detoxifying gene sets referred as ‘the xenome’. However, no data are available about how polyploidy impacts tolerance to organic xenobiotics. In the present paper, we investigated PAH tolerance following allopolyploidization in Spartina alterniflora, S. maritima and their derived allopolyploid species S. anglica. We performed comparative analyses of cellular compartmentalization, photosynthetic indices, and oxidative stress markers under phenanthrene-induced stress, and found that S. anglica exhibit increased tolerance compared to its parents. Based on 52 genes potentially involved in phenanthrene detoxification previously identified in A. thaliana, we investigated the Spartina xenome using genomic and transcriptomic available resources. Subsequently, we focused on GSTs, a ubiquitous enzymes class involved in organic xenobiotic detoxification. We examined expression profiles of selected genes by RT-qPCR, and revealed various patterns of parental expression alteration in the allopolyploid. The impacts of allopolyploidization on phenanthrene-induced stress and their potential ecological implications are discussed. The neo-allopolyploid S. anglica appears as a potential candidate for phytoremediation in PAH-polluted marshes.
- Subjects :
- Genome doubling
0106 biological sciences
0301 basic medicine
abiotic stress
Plant Science
Biology
Poaceae
Spartina alterniflora
01 natural sciences
Genome
Xenobiotics
Polyploidy
Transcriptome
03 medical and health sciences
chemistry.chemical_compound
PAHs
Genetics
Gene
2. Zero hunger
Spartina
Abiotic stress
GSTs
Sequence Analysis, DNA
General Medicine
[SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics
15. Life on land
biology.organism_classification
Phytoremediation
030104 developmental biology
chemistry
13. Climate action
[SDE.BE]Environmental Sciences/Biodiversity and Ecology
Xenobiotic
Agronomy and Crop Science
Genome, Plant
010606 plant biology & botany
Subjects
Details
- ISSN :
- 01689452
- Volume :
- 280
- Database :
- OpenAIRE
- Journal :
- Plant Science
- Accession number :
- edsair.doi.dedup.....033b40c977119714aaa6074e226aa71d