Plant biomechanics and resilience to environmental changes are controlled by specific lignin chemistries in each vascular cell type and morphotype
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- Delphine Ménard
- Department of Ecology, Environment and Plant Sciences (DEEP), Stockholm University , 106 91 Stockholm, Sweden
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- Leonard Blaschek
- Department of Ecology, Environment and Plant Sciences (DEEP), Stockholm University , 106 91 Stockholm, Sweden
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- Konstantin Kriechbaum
- Department of Materials and Environmental Chemistry (MMK), Stockholm University , 106 91 Stockholm, Sweden
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- Cheng Choo Lee
- Umeå Core Facility for Electron Microscopy (UCEM), Umeå University , 901 87 Umeå, Sweden
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- Henrik Serk
- Umeå Plant Science Centre (UPSC), Department of Plant Physiology, Umeå University , 901 87 Umeå, Sweden
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- Chuantao Zhu
- Department of Materials and Environmental Chemistry (MMK), Stockholm University , 106 91 Stockholm, Sweden
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- Alexander Lyubartsev
- Department of Materials and Environmental Chemistry (MMK), Stockholm University , 106 91 Stockholm, Sweden
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- Nuoendagula
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology , Tokyo 184-8588, Japan
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- Zoltán Bacsik
- Department of Materials and Environmental Chemistry (MMK), Stockholm University , 106 91 Stockholm, Sweden
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- Lennart Bergström
- Department of Materials and Environmental Chemistry (MMK), Stockholm University , 106 91 Stockholm, Sweden
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- Aji Mathew
- Department of Materials and Environmental Chemistry (MMK), Stockholm University , 106 91 Stockholm, Sweden
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- Shinya Kajita
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology , Tokyo 184-8588, Japan
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- Edouard Pesquet
- Department of Ecology, Environment and Plant Sciences (DEEP), Stockholm University , 106 91 Stockholm, Sweden
説明
<jats:title>Abstract</jats:title> <jats:p>The biopolymer lignin is deposited in the cell walls of vascular cells and is essential for long-distance water conduction and structural support in plants. Different vascular cell types contain distinct and conserved lignin chemistries, each with specific aromatic and aliphatic substitutions. Yet, the biological role of this conserved and specific lignin chemistry in each cell type remains unclear. Here, we investigated the roles of this lignin biochemical specificity for cellular functions by producing single cell analyses for three cell morphotypes of tracheary elements, which all allow sap conduction but differ in their morphology. We determined that specific lignin chemistries accumulate in each cell type. Moreover, lignin accumulated dynamically, increasing in quantity and changing in composition, to alter the cell wall biomechanics during cell maturation. For similar aromatic substitutions, residues with alcohol aliphatic functions increased stiffness whereas aldehydes increased flexibility of the cell wall. Modifying this lignin biochemical specificity and the sequence of its formation impaired the cell wall biomechanics of each morphotype and consequently hindered sap conduction and drought recovery. Together, our results demonstrate that each sap-conducting vascular cell type distinctly controls their lignin biochemistry to adjust their biomechanics and hydraulic properties to face developmental and environmental constraints.</jats:p>
収録刊行物
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- The Plant Cell
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The Plant Cell 34 (12), 4877-4896, 2022-09-21
Oxford University Press (OUP)
