Brassinosteroid coordinates cell layer interactions in plants via cell wall and tissue mechanics.

Autor: Kelly-Bellow R; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Lee K; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Kennaway R; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Barclay JE; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Whibley A; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Bushell C; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Spooner J; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Yu M; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK., Brett P; Department of Biochemistry and Metabolism, John Innes Centre, Norwich NR4 7UH, UK., Kular B; Department of Biochemistry and Metabolism, John Innes Centre, Norwich NR4 7UH, UK., Cheng S; National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China., Chu J; National Centre for Plant Gene Research (Beijing), Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China.; College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing 100039, China., Xu T; State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China., Lane B; Department of Computational and Systems Biology, John Innes Centre, Norwich NR4 7UH, UK., Fitzsimons J; Sainsbury Laboratory, University of Cambridge, Cambridge CB2 1LR, UK., Xue Y; State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China., Smith RS; Department of Computational and Systems Biology, John Innes Centre, Norwich NR4 7UH, UK., Whitewoods CD; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK.; Sainsbury Laboratory, University of Cambridge, Cambridge CB2 1LR, UK., Coen E; Department of Cell and Developmental Biology, John Innes Centre, Norwich NR4 7UH, UK.
Jazyk: angličtina
Zdroj: Science (New York, N.Y.) [Science] 2023 Jun 23; Vol. 380 (6651), pp. 1275-1281. Date of Electronic Publication: 2023 Jun 22.
DOI: 10.1126/science.adf0752
Abstrakt: Growth coordination between cell layers is essential for development of most multicellular organisms. Coordination may be mediated by molecular signaling and/or mechanical connectivity between cells, but how genes modify mechanical interactions between layers is unknown. Here we show that genes driving brassinosteroid synthesis promote growth of internal tissue, at least in part, by reducing mechanical epidermal constraint. We identified a brassinosteroid-deficient dwarf mutant in the aquatic plant Utricularia gibba with twisted internal tissue, likely caused by mechanical constraint from a slow-growing epidermis. We tested this hypothesis by showing that a brassinosteroid mutant in Arabidopsis enhances epidermal crack formation, indicative of increased tissue stress. We propose that by remodeling cell walls, brassinosteroids reduce epidermal constraint, showing how genes can control growth coordination between layers by means of mechanics.
Databáze: MEDLINE
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