scholarly journals Spectroscopic analysis of diversity in the spatial distribution of arabinoxylan structures in endosperm cell walls of cereal species in the HEALTHGRAIN diversity collection

2012 ◽  
Vol 56 (2) ◽  
pp. 134-141 ◽  
Author(s):  
G.A. Toole ◽  
G. Le Gall ◽  
I.J. Colquhoun ◽  
S. Drea ◽  
M. Opanowicz ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Cell Walls ◽  
Spectroscopic Analysis ◽  
Endosperm Cell ◽  
Cereal Species

Spectroscopic Analysis of Diversity of Arabinoxylan Structures in Endosperm Cell Walls of Wheat Cultivars (Triticum aestivum) in the HEALTHGRAIN Diversity Collection

2011 ◽  
Vol 59 (13) ◽  
pp. 7075-7082 ◽  
Author(s):  
Geraldine A. Toole ◽  
Gwénaëlle Le Gall ◽  
Ian J. Colquhoun ◽  
Phil Johnson ◽  
Zoltan Bedö ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Cell Walls ◽  
Spectroscopic Analysis ◽  
Wheat Cultivars ◽  
Endosperm Cell

scholarly journals Analysis of the arabinoxylan arabinofuranohydrolase gene family in barley does not support their involvement in the remodelling of endosperm cell walls during development

2012 ◽  
Vol 63 (8) ◽  
pp. 3031-3045 ◽  
Author(s):  
Hunter K. C. Laidlaw ◽  
Jelle Lahnstein ◽  
Rachel A. Burton ◽  
Geoffrey B. Fincher ◽  
Stephen A. Jobling
Keyword(s):  
Gene Family ◽  
Cell Walls ◽  
Endosperm Cell ◽  
Arabinoxylan Arabinofuranohydrolase

scholarly journals Isolation of wheat endosperm cell walls: Effects of non-endosperm flour components on structural analyses

2017 ◽  
Vol 74 ◽  
pp. 165-173 ◽  
Author(s):  
Ghanendra Gartaula ◽  
Sushil Dhital ◽  
Denise Pleming ◽  
Michael J. Gidley
Keyword(s):  
Cell Walls ◽  
Endosperm Cell ◽  
Wheat Endosperm

Cytochemical localization of some polysaccharide components in the cell walls of Chalara elegans during its life cycle

1992 ◽  
Vol 38 (8) ◽  
pp. 828-837
Author(s):  
Eliane Dumas-Gaudot ◽  
Abdessamad Tahiri-Alaoui ◽  
Nicole Benhamou
Keyword(s):  
Spatial Distribution ◽  
Cell Walls ◽  
Pathogenic Fungus ◽  
Minor Component ◽  
Multilayered Structure ◽  
Electron Microscope Level ◽  
Cytochemical Localization ◽  
Chalara Elegans ◽  
A Minor ◽  
First Time

The occurrence of polysaccharides and sugars in the cell walls of the soil-borne pathogenic fungus Chalara elegans (deuteromycete) has been investigated at the electron microscope level, using cytochemical approaches based on the affinity of lectin or enzyme–gold complexes for some carbohydrates. Evidence for the presence of both β-1,4-glucans and chitinous components is reported here for the first time in the cell walls of chlamydospores, endoconidia, and hyphae. A minor component with N-acetyl-D-galactosamine residues is also detected in the cell walls and, as a storage product, in the cytoplasm. The spatial distribution of both cellulosic β-1,4-glucans and N-acetylglucosamine residues differs according to the fungal cells, and the present results give a more accurate description of the multilayered structure of the fungal walls (i.e., chlamydospores and hyphae). Key words: Chalara elegans, fungi, cell walls, gold cytochemistry.

Seed ontogeny and endosperm chemical analysis in Smilax polyantha (Smilacaceae)

2012 ◽  
Vol 60 (8) ◽  
pp. 693 ◽  
Author(s):  
Aline Redondo Martins ◽  
Sandra Maria Carmello-Guerreiro ◽  
Marcos Silveira Buckeridge ◽  
Clovis Oliveira Silva ◽  
Beatriz Appezzato-da-Glória
Keyword(s):  
Seed Germination ◽  
Cell Walls ◽  
Folk Medicine ◽  
Vascular Bundles ◽  
Chemical Analyses ◽  
Endosperm Cell ◽  
Brazilian Cerrado ◽  
Chemical Factors ◽  
Histochemical Tests ◽  
Mature Seeds

Smilax polyantha Grisebach is a species native to the Brazilian Cerrado biome and is known as sarsaparilla in folk medicine. Despite its popular use, little is known about the propagation of this species, which is still actively illegally exploited. The present study aims to analyse the seed ontogeny and perform endosperm chemical analyses in S. polyantha to elucidate the structural and chemical factors that could be associated with the low germination rates and structural organisation of the seed. The ovules are orthotropic and bitegmic, have short funicles, single collateral vascular bundles that end in the chalaza, and a hypostasis that is composed of chalazal and nucellar cells. The seed covering is non-multiplicative. In mature seeds, the cellularised endosperm has thick-walled cells, the embryo is small and the tegmen comprises two layers of periclinal elongated cells with a red–orange content, which are covered by a cuticle. Histochemical tests detected the presence of lipids, proteins and polysaccharides in the cellular content of mature seeds. Chemical analyses indicated 46.7% hemicellulose per total weight, 67.3% glucose, 30.7% mannose, 1.9% galactose and an absence of fucose, arabinose and rhamnose. In conclusion, the delayed seed germination in S. polyantha is associated with the seed endosperm cell walls.

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