scholarly journals Differential Localization of Carbohydrate Epitopes in Plant Cell Walls in the Presence and Absence of Arbuscular Mycorrhizal Fungi

1996 ◽  
Vol 111 (1) ◽  
pp. 203-213 ◽  
Author(s):  
R. Balestrini ◽  
M. G. Hahn ◽  
A. Faccio ◽  
K. Mendgen ◽  
P. Bonfante
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Plant Cell ◽  
Mycorrhizal Fungi ◽  
Cell Walls ◽  
Arbuscular Mycorrhizal ◽  
Plant Cell Walls ◽  
Carbohydrate Epitopes ◽  
Differential Localization ◽  
Presence And Absence

scholarly journals Phosphate solubilization and synergism between P-solubilizing and arbuscular mycorrhizal fungi

2006 ◽  
Vol 41 (9) ◽  
pp. 1405-1411 ◽  
Author(s):  
Edson Luiz Souchie ◽  
Rosario Azcón ◽  
Jose Miguel Barea ◽  
Orivaldo José Saggin-Júnior ◽  
Eliane Maria Ribeiro da Silva
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Plant Nutrition ◽  
Phosphate Solubilization ◽  
Arbuscular Mycorrhizal ◽  
Aluminum Phosphate ◽  
Randomized Design ◽  
P Content ◽  
Completely Randomized Design ◽  
Presence And Absence

The objective of this work was to evaluate the ability of several P-solubilizing fungi to solubilize aluminum phosphate and Araxá apatite as well as the synergism between the P-solubilizing fungus, PSF 7, and arbuscular mycorrhizal fungi to promote clover growth amended with aluminum phosphate. Two experiments were carried out, the first under laboratory conditions and the second in a controlled environmental chamber. In the first experiment, PSF 7, PSF 9, PSF 21 and PSF 22 isolates plus control were incubated in liquid medium at 28ºC for eight days. On the 2nd, 4th and 8th day of incubation, pH and soluble P were determined. In the second experiment, clover was sowed in plastic pots containing 300 g of sterilized substrate amended with aluminum phosphate, 3 g L-1, in presence and absence of PSF 7 isolate and arbuscular mycorrhizal fungi. A completely randomized design, in factorial outline 2x2 (presence and absence of PSF 7 and arbuscular mycorrhizal fungi) and five replicates were used. In the first experiment, higher P content was detected in the medium containing aluminum phosphate. PSF 7 is the best fungi isolate which increases aluminum solubilization with major tolerance to Al3+. Clover growth was stimulated by presence of PSF 7 and arbuscular mycorrhizal fungi. There is synergism between microorganisms utilized to improve plant nutrition.

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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