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Polyploidy affects plant growth and alters cell wall composition

(2019) PLANT PHYSIOLOGY. 179(1). p.74-87
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Abstract
Polyploidization has played a key role in plant breeding and crop improvement. Although its potential to increase biomass yield is well described, the effect of polyploidization on biomass composition has largely remained unexplored. Here, we generated a series of Arabidopsis (Arabidopsis thaliana) plants with different somatic ploidy levels (2n, 4n, 6n, and 8n) and performed rigorous phenotypic characterization. Kinematic analysis showed that polyploids developed slower compared to diploids; however, tetra- and hexaploids, but not octaploids, generated larger rosettes due to delayed flowering. In addition, morphometric analysis of leaves showed that polyploidy affected epidermal pavement cells, with increased cell size and reduced cell number per leaf blade with incrementing ploidy. However, the inflorescence stem dry weight was highest in tetraploids. Cell wall characterization revealed that the basic somatic ploidy level negatively correlated with lignin and cellulose content, and positively correlated with matrix polysaccharide content (i.e. hemicellulose and pectin) in the stem tissue. In addition, higher ploidy plants displayed altered sugar composition. Such effects were linked to the delayed development of polyploids. Moreover, the changes in polyploid cell wall composition promoted saccharification yield. The results of this study indicate that induction of polyploidy is a promising breeding strategy to further tailor crops for biomass production.
Keywords
LIGNIN BIOSYNTHETIC-PATHWAY, GENOME, MUTANT, DEPOSITION, EXPRESSION, ENZYME, POPLAR, HYBRID, YIELD, GRASS

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Chicago
Corneillie, Sander, Nico De Storme, Rebecca Van Acker, Jonatan Ulrik Fangel, Michiel De Bruyne, Riet De Rycke, Danny Geelen, William George Tycho Willats, Bartel Vanholme, and Wout Boerjan. 2019. “Polyploidy Affects Plant Growth and Alters Cell Wall Composition.” Plant Physiology 179 (1): 74–87.
APA
Corneillie, Sander, De Storme, N., Van Acker, R., Fangel, J. U., De Bruyne, M., De Rycke, R., Geelen, D., et al. (2019). Polyploidy affects plant growth and alters cell wall composition. PLANT PHYSIOLOGY, 179(1), 74–87.
Vancouver
1.
Corneillie S, De Storme N, Van Acker R, Fangel JU, De Bruyne M, De Rycke R, et al. Polyploidy affects plant growth and alters cell wall composition. PLANT PHYSIOLOGY. 2019;179(1):74–87.
MLA
Corneillie, Sander, Nico De Storme, Rebecca Van Acker, et al. “Polyploidy Affects Plant Growth and Alters Cell Wall Composition.” PLANT PHYSIOLOGY 179.1 (2019): 74–87. Print.
@article{8584051,
  abstract     = {Polyploidization has played a key role in plant breeding and crop improvement. Although its potential to increase biomass yield is well described, the effect of polyploidization on biomass composition has largely remained unexplored. Here, we generated a series of Arabidopsis (Arabidopsis thaliana) plants with different somatic ploidy levels (2n, 4n, 6n, and 8n) and performed rigorous phenotypic characterization. Kinematic analysis showed that polyploids developed slower compared to diploids; however, tetra- and hexaploids, but not octaploids, generated larger rosettes due to delayed flowering. In addition, morphometric analysis of leaves showed that polyploidy affected epidermal pavement cells, with increased cell size and reduced cell number per leaf blade with incrementing ploidy. However, the inflorescence stem dry weight was highest in tetraploids. Cell wall characterization revealed that the basic somatic ploidy level negatively correlated with lignin and cellulose content, and positively correlated with matrix polysaccharide content (i.e. hemicellulose and pectin) in the stem tissue. In addition, higher ploidy plants displayed altered sugar composition. Such effects were linked to the delayed development of polyploids. Moreover, the changes in polyploid cell wall composition promoted saccharification yield. The results of this study indicate that induction of polyploidy is a promising breeding strategy to further tailor crops for biomass production.},
  author       = {Corneillie, Sander and De Storme, Nico and Van Acker, Rebecca and Fangel, Jonatan Ulrik and De Bruyne, Michiel and De Rycke, Riet and Geelen, Danny and Willats, William George Tycho and Vanholme, Bartel and Boerjan, Wout},
  issn         = {0032-0889},
  journal      = {PLANT PHYSIOLOGY},
  language     = {eng},
  number       = {1},
  pages        = {74--87},
  title        = {Polyploidy affects plant growth and alters cell wall composition},
  url          = {http://dx.doi.org/10.1104/pp.18.00967},
  volume       = {179},
  year         = {2019},
}

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