Cell wall remodeling under abiotic stress
By Raimund Tenhaken. Frontiers in Plant Science, 2015
700 citations recorded by the source corpus.
Plants exposed to abiotic stress respond to unfavorable conditions on multiple levels. One challenge under drought stress is to reduce shoot growth while maintaining root growth, a process requiring differential cell wall synthesis and remodeling. Key players in this process are the formation of reactive oxygen species (ROS) and peroxidases, which initially cross-link phenolic compounds and glycoproteins of the cell walls causing stiffening. The function of ROS shifts after having converted all the peroxidase substrates in the cell wall. If ROS-levels remain high during prolonged stress, OH°-radicals are formed which lead to polymer cleavage. In concert with xyloglucan modifying enzymes and expansins, the resulting cell wall loosening allows further growth of stressed organs.
Subfields: Plant Science
View Paper: https://www.semanticscholar.org/paper/cf36c6455d9268b79c05387d3b3290726d3a889c
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In Plant Science
- F. J. Corpas
- J. Palma
- D. Gupta
- Jian‐Kang Zhu
- M. Ashraf
- Kazuko Yamaguchi-Shinozaki
- Kazuo Shinozaki
- Viswanathan Chinnusamy
Citations in the corpus
- Impact of drought stress on growth and quality of miscanthus for biofuel production (2017, background): “An increase in the relative proportion of hemicelluloses might enable cell walls of drought-treated plants to uphold their structural rigidity without compromising plasticity (Le Gall et al., 2015; Tenhaken, 2015).”
- Antioxidants and Antioxidant Enzymes in Higher Plants (2018, background): “Cell wall loosening is important under osmotic, drought or salt stress in order to ensure the possibility of cells and organs to expand (Tenhaken 2014).”
- Abiotic stress signaling and responses in plants (2016, background): “Salt, drought, and other osmotic stress treatments can cause ROS accumulation and other changes in the cell wall (Tenhaken, 2014).”