Pectin-Induced Changes in Cell Wall Mechanics Underlie Organ Initiation in Arabidopsis

TL;DR: The roles of pectin in three systems displaying rapid growth - the elongation zone of the root, the tip region of the pollen tube, and organ primordia formation at the shoot apical meristem - are reviewed.

TL;DR: Pectin is a heterogeneous hydrocolloid present in the primary cell wall and middle lamella in all dicotyledonous plants, more commonly in the outer fruit coat or peel as compared to the inner matrix as mentioned in this paper .

TL;DR: How plant cell walls respond to certain environmental cues through cell wall-modifying proteins in connection with modifications in cell wall machinery is elucidated to provide targets and strategies to facilitate plant adaptation to heat stress.

TL;DR: The roles played by the cooptation, expansion, and subsequent diversification of ancestral genomic toolkits and patterning modules during the evolution of multicellularity are discussed and it is concluded that the extent to which multice cellularity is achieved using the same toolkit and modules differs among clades and even among some closely related lineages.

TL;DR: The results show that auxin is required for and sufficient to induce organogenesis both in the vegetative tomato meristem and in the Arabidopsis inflorescence meristsem, and it is proposed that Auxin determines the radial position and the size of lateral organs but not the apical–basal position or the identity of the induced structures.

TL;DR: It is found that morphogenesis at the Arabidopsis shoot apex depends on the microtubule cytoskeleton, which in turn is regulated by mechanical stress, and a feedback loop encompassing tissue morphology, stress patterns, and microtubules-mediated cellular properties is sufficient to account for the coordinated patterns of micro Tubule arrays observed in epidermal cells.

TL;DR: Although, overall, protein structures are highly conserved between isoforms, recent data indicate that structural variations might be associated with the targeting and functions of specific pectin methylesterases.

TL;DR: Experimental results indicate that cell wall enlargement may be regulated at many levels.