The plant cell wall as a site for molecular contacts in fungal pathogenesis

2016 ◽  
Vol 95 ◽  
pp. 44-49 ◽  
Author(s):  
Kazuhiro Toyoda ◽  
Sachiyo Yao ◽  
Mai Takagi ◽  
Maki Uchioki ◽  
Momiji Miki ◽  
...  
1977 ◽  
Vol 59 (3) ◽  
pp. 388-390 ◽  
Author(s):  
Barbara B. Lippincott ◽  
Mariamne H. Whatley ◽  
James A. Lippincott

1988 ◽  
Vol 66 (9) ◽  
pp. 1717-1722
Author(s):  
Hinrich Harries ◽  
Felix Bärlocher

The living stems of striped maple (Acer pensylvanicum L.) at two sites in Nova Scotia were found to be covered by a striking pattern of fungal hyphae belonging to Pseudospiropes sp. The fungus colonizes branches or seedlings during their first season, and the density of its coverage increases every year thereafter. The fungus was absent from striped maple at a site near Lake Placid, NY, and there is some evidence that its frequency of occurrence has declined elsewhere in the last few years. A pure culture of the fungus was unable to hydrolyze several plant cell wall polymers. It was able to use simple lipids, however, and its presence increased the erosion of the cutinized layer of striped maple stems. The fungus does not penetrate the stem surface, and its occurrence is not correlated with twig length or volume. It was absent from three sympatric maple species.


Author(s):  
Venkatasubramanian Sivakumar

Background: In the growing environmental concern use of natural products, efficient processes and devices are necessary. Solid-Liquid extraction of active Ingredients from Plant materials is one of the important unit operations in Chemical Engineering and need to be enhanced. Objectives: Since, these active ingredients are firmly bound to the plant cell wall membrane, which pose mass-transfer resistance and need to get detached through the use of suitable process intensification tools such as ultrasound and suitable devices. Therefore, detailed analysis and review is essential on development made in this area through Publications and Patents. Hence, the present paper illustrates the development of ultrasound assisted device for solid-liquid extraction are presented in this paper. Methods: Advantages such as % Yield, Reduction in extraction time, use of ambient conditions, better process control, avoidance or minimizing multi stage extraction could be achieved due to the use of ultrasound in extraction as compared to conventional processes. Conclusions: Use of ultrasound to provide significant improvements in the extraction of Vegetable tannins, Natural dyes for application in Leather processing has been demonstrated and reported earlier. These enhancement could be possible through various effects of ultrasound such as better flow of solvents through micro-jet formation, mass transfer enhancement due to rupture of plant cell wall membranes through acoustic cavitation, better leaching due to micro-mixing and acoustic streaming effects. This approach would minimize material wastage; thereby, leading to eco-conservation of plant materials, which is very much essential for better environment. Hence, various methods and design for application of ultrasound assisted solid-liquid extractor device are necessary.


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