Asset Details
Do you wish to reserve the book?
Mapping of cell wall aromatic moieties and their effect on hygroscopic movement in the awns of stork’s bill
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Mapping of cell wall aromatic moieties and their effect on hygroscopic movement in the awns of stork’s bill
Do you wish to request the book?
Mapping of cell wall aromatic moieties and their effect on hygroscopic movement in the awns of stork’s bill
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Mapping of cell wall aromatic moieties and their effect on hygroscopic movement in the awns of stork’s bill
2018
Overview
The awn in stork’s bill (
Erodium gruinum
) seed dispersal units coils as it dries. This hygroscopic movement promotes the dissemination and sowing of the seeds. Here we aimed to understand the movement rate, by correlating water dynamics within the awn to the spatial variation in the chemical composition of the awn’s cell walls. We followed the hygroscopic movement visually and measured the kinetics of water adsorption–desorption in segments along the awn. We integrated data from white light, fluorescence, and Raman microscopy, and Matrix Assisted Laser Desorption Ionization imaging to characterize the micro chemical makeup of the awn. We hydrolyzed awns and followed the change in the cell walls’ composition and the effect on the movement. We found that the coil’s top segment is more sensitive to humidity changes than the coil’s base. At the top part of the coil, we found high concentration of modified lignin. In comparison, the base part of the awn contained lower concentration of mostly unmodified lignin. Ferulic acid concentration increased along the awn, apparently cross-linking hemicellulose and strengthening cell-to-cell adhesion. We propose that the high concentration of modified lignin at the coil’s top increased the hydrophobicity of the cell walls, allowed faster water molecules dynamics; thus inducing fast reaction to ambient humidity. Strong cell-to-cell adhesion in this region created a durable tissue required for the awn’s repeated movement that is induced by the diurnal humidity cycles.
Graphical Abstract
