Pectin-Induced Changes in Cell Wall Mechanics Underlie Organ Initiation in Arabidopsis
Alexis Peaucelle,Alexis Peaucelle,Siobhan A. Braybrook,Laurent Le Guillou,Emeric Bron,Emeric Bron,Cris Kuhlemeier,Herman Höfte +7 more
TL;DR: The results support the following causal sequence of events: (1) demethylesterification of pectin is triggered in subepidermal tissue layers, this contributes to an increase in elasticity of these layers-the first observable mechanical event in organ initiation, and (3) the process propagates to the epidermis during the outgrowth of the organ.
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About: This article is published in Current Biology. The article was published on 25 Oct 2011. and is currently open access. The article focuses on the topics: Primordium & Meristem.
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Citations
Roles of pectin in biomass yield and processing for biofuels
Chaowen Xiao,Charles T. Anderson +1 more
TL;DR: A mini-review of recent results indicated that pectin influences secondary wall formation in addition to its roles in primary wall biosynthesis and modification is examined in the context of biomass yield and digestibility and how these traits might be enhanced by the genetic and molecular modification of pectIn.
POLYGALACTURONASE INVOLVED IN EXPANSION1 Functions in Cell Elongation and Flower Development in Arabidopsis
TL;DR: This work uses a genetic screen based on overexpression to identify a gene encoding a polygalacturonase enzyme that degrades pectins, both as a purified protein and in intact plant cell walls, and is required for cellular growth in dark-grown seedlings and the normal developmental control of flower petal number in adult Arabidopsis thaliana plants.
How mechanical stress controls microtubule behavior and morphogenesis in plants: history, experiments and revisited theories.
TL;DR: A conceptual model on microtubule dynamics and their ability to self-organize in bundles parallel to the direction of maximal stress, as well as a synthetic representation of the putative mechanotransducers at play are proposed.
169
Cell wall-associated kinases and pectin perception
TL;DR: A review of the WAKs in the context of cell wall biology and signal transduction pathways explores the pectin matrix of the angiosperm cell wall and its role in plant form and function.
Variable Cell Growth Yields Reproducible Organ Development through Spatiotemporal Averaging
Lilan Hong,Mathilde Dumond,Satoru Tsugawa,Aleksandra Sapala,Anne-Lise Routier-Kierzkowska,Yong Zhou,Catherine Z. Chen,Annamaria Kiss,Mingyuan Zhu,Olivier Hamant,Richard S. Smith,Tamiki Komatsuzaki,Chun-Biu Li,Arezki Boudaoud,Adrienne H. K. Roeder +14 more
TL;DR: It is found that regular organ shape results from spatiotemporal averaging of the cellular variability in wild-type sepals, which is disrupted in the less-variable cells of ftsh4 mutants, and abnormal, increased accumulation of reactive oxygen species (ROS) in ftsH4 mutants disrupts organ size consistency.
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