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Laccaria bicolor pe...
Laccaria bicolor pectin methylesterases are involved in ectomycorrhiza development with Populus tremula × Populus tremuloides
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- Chowdhury, Jamil (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC),Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center, Swedish University of Agricultural Sciences, Umeå, Sweden,Institutionen för skoglig genetik och växtfysiologi,Umeå University
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- Kemppainen, Minna (author)
- Laboratory of Molecular Mycology, Department of Science and Technology, Institute of Basic and Applied Microbiology, National University of Quilmes (UNQ), and National Scientific and Technical Research Council (CONICET), Bernal, Argentina
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- Delhomme, Nicolas (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology
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- Shutava, Iryna (author)
- Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC)
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- Zhou, Jingjing (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Umeå universitet,Institutionen för fysiologisk botanik,Umeå Plant Science Centre (UPSC),Department of Forest Genetics and Plant Physiology, Umeå Plant Science Center, Swedish University of Agricultural Sciences, Umeå, Sweden,Institutionen för skoglig genetik och växtfysiologi,Umeå University
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- Takahashi Schmidt, Junko (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology
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- Pardo, Alejandro G. (author)
- Laboratory of Molecular Mycology, Department of Science and Technology, Institute of Basic and Applied Microbiology, National University of Quilmes (UNQ), and National Scientific and Technical Research Council (CONICET), Bernal, Argentina
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- Lundberg-Felten, Judith (author)
- Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för skoglig genetik och växtfysiologi,Department of Forest Genetics and Plant Physiology
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(creator_code:org_t)
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- 2022-07-27
- 2022
- English.
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In: New Phytologist. - : John Wiley & Sons. - 0028-646X .- 1469-8137. ; 236:2, s. 639-655
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Abstract
Subject headings
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- The development of ectomycorrhizal (ECM) symbioses between soil fungi and tree roots requires modification of root cell walls. The pectin-mediated adhesion between adjacent root cells loosens to accommodate fungal hyphae in the Hartig net, facilitating nutrient exchange between partners. We investigated the role of fungal pectin modifying enzymes in Laccaria bicolor for ECM formation with Populus tremula × Populus tremuloides.We combine transcriptomics of cell-wall-related enzymes in both partners during ECM formation, immunolocalisation of pectin (Homogalacturonan, HG) epitopes in different methylesterification states, pectin methylesterase (PME) activity assays and functional analyses of transgenic L. bicolor to uncover pectin modification mechanisms and the requirement of fungal pectin methylesterases (LbPMEs) for ECM formation.Immunolocalisation identified remodelling of pectin towards de-esterified HG during ECM formation, which was accompanied by increased LbPME1 expression and PME activity. Overexpression or RNAi of the ECM-induced LbPME1 in transgenic L. bicolor lines led to reduced ECM formation. Hartig Nets formed with LbPME1 RNAi lines were shallower, whereas those formed with LbPME1 overexpressors were deeper.This suggests that LbPME1 plays a role in ECM formation potentially through HG de-esterification, which initiates loosening of adjacent root cells to facilitate Hartig net formation.
Subject headings
- NATURVETENSKAP -- Biologi -- Botanik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Botany (hsv//eng)
- LANTBRUKSVETENSKAPER -- Lantbruksvetenskap, skogsbruk och fiske -- Skogsvetenskap (hsv//swe)
- AGRICULTURAL SCIENCES -- Agriculture, Forestry and Fisheries -- Forest Science (hsv//eng)
Keyword
- cell wall
- cell-wall remodelling
- cell-wall-modifying enzymes
- ectomycorrhiza
- Laccaria bicolor
- pectin
- pectin methylesterase
- Populus
Publication and Content Type
- ref (subject category)
- art (subject category)
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