Role of Plant Cell Walls in Determining Plant-pathogen Specificity

2000 ◽  
Vol 66 (3) ◽  
pp. 281-281
Author(s):  
Akinori KIBA
Keyword(s):  
Plant Cell ◽  
Plant Pathogen ◽  
Cell Walls ◽  
Plant Cell Walls

Characterization and expression analysis of the expansin gene NnEXPA1 in lotus Nelumbo nucifera

Biologia ◽  
2016 ◽  
Vol 71 (1) ◽  
Author(s):  
Neng Cheng ◽  
Xiao-Fei Zeng ◽  
Zheng Xing-Fei ◽  
Diao Ying ◽  
Wang You-Wei ◽  
...  
Keyword(s):  
Plant Cell ◽  
Expression Analysis ◽  
Cell Walls ◽  
Physiological Role ◽  
Nelumbo Nucifera ◽  
Plant Cell Walls ◽  
Expansin Gene

AbstractExpansin proteins play a key role in inducing the extension and relaxation of plant cell walls. To understand the physiological role of expansins in lotus crop,

Role of supramolecular cellulose structures in enzymatic hydrolysis of plant cell walls

2010 ◽  
Vol 38 (8) ◽  
pp. 975-983 ◽  
Author(s):  
Lisbeth Garbrecht Thygesen ◽  
Budi Juliman Hidayat ◽  
Katja Salomon Johansen ◽  
Claus Felby
Keyword(s):  
Enzymatic Hydrolysis ◽  
Plant Cell ◽  
Cell Walls ◽  
Plant Cell Walls ◽  
Hydrolysis Of ◽  
Cellulose Structures

Electron microscopic studies of fiber degradation by rumen fungi

1983 ◽  
Vol 41 ◽  
pp. 814-815
Author(s):  
Danny E. Akin
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Rumen Fluid ◽  
Plant Cell Walls ◽  
Host Animal ◽  
Electron Microscopic ◽  
Fiber Degradation ◽  
Microscopic Studies ◽  
Complex Ecosystem

The rumen microbial population is a complex ecosystem. Bacteria, protozoa, and fungi all play a part in degrading plant cell walls, which are a major substrate for energy and protein for the host animal. Rumen bacteria are considered to be the major degraders of forage fiber, but recent research has shown that rumen fungi are ubiquitous and are able to attack plant cell walls. Electron microscopy has been important in delineating the roles played by the various microbial types, including the fungi. The object of the present research was to assess the role of rumen fungi as degraders of particular tissues and to demonstrate that the presence of rumen fungi in the rumen can explain many of the unusual morphotypes associated with degradation of the more resistant tissues in forages.Rumen fungi were evaluated by inoculating tubes containing leaf blade sections of Cynodon dactyl on in a semi-synthetic, anaerobic medium with rumen fluid and incubating the tubes for 48 hours at 39°C. Some of the tubes contained streptomycin (2 mg/ml) and penicillin (2 x 10 units/ml) to inhibit bacteria.

Modifications ultrastructurales des parois végétales dans le tube digestif d'une larve xylophage Oryctes nasicornis (Coleoptera, Scarabaeidae): rôle des bactéries

1981 ◽  
Vol 59 (10) ◽  
pp. 2020-2029 ◽  
Author(s):  
Colette Bayon
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Gut Contents ◽  
Crystalline Cellulose ◽  
Natural Food ◽  
Plant Cell Walls ◽  
Tube Digestif ◽  
Ultrastructural Modifications

The ultrastructural modifications of plant cell walls have been studied in the food and gut contents from the xylophagous larvae of Oryctes nasicornis. Before ingestion the natural food undergoes a large amount of degradation by fungus-rich microflora of the soil. The break-down of α-cellulose, and amorphous and crystalline cellulose of the secondary walls occurs in the mesenteron and later in the proctodeal dilation where it is greatest. The role of bacteria is recognised and the successive stages of degradation are characterised.

Exploration of cell wall architecture with the rapid-freeze deep-etch technique

1993 ◽  
Vol 51 ◽  
pp. 128-129
Author(s):  
Béatrice Satiat-Jeunemaitre ◽  
Chris Hawes
Keyword(s):  
Plant Cell ◽  
Cell Walls ◽  
Cell Biology ◽  
Molecular Model ◽  
Three Dimensional ◽  
Secretory Activity ◽  
Wall Structure ◽  
Specimen Preparation ◽  
Molecular Architecture ◽  
Plant Cell Walls

The comprehension of the molecular architecture of plant cell walls is one of the best examples in cell biology which illustrates how developments in microscopy have extended the frontiers of a topic. Indeed from the first electron microscope observation of cell walls it has become apparent that our understanding of wall structure has advanced hand in hand with improvements in the technology of specimen preparation for electron microscopy. Cell walls are sub-cellular compartments outside the peripheral plasma membrane, the construction of which depends on a complex cellular biosynthetic and secretory activity (1). They are composed of interwoven polymers, synthesised independently, which together perform a number of varied functions. Biochemical studies have provided us with much data on the varied molecular composition of plant cell walls. However, the detailed intermolecular relationships and the three dimensional arrangement of the polymers in situ remains a mystery. The difficulty in establishing a general molecular model for plant cell walls is also complicated by the vast diversity in wall composition among plant species.

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