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Showing 2 results for Pichia

Amir Ramzani, Dr Safarali Mahdian,
Volume 5, Issue 1 (2-2016)
Abstract

Ramezani A.  &  Mahdian S. A. 2016. Biological control of post-harvest citrus diseases. Plant Pathology Science 5(1):14-25.

Post- harvest rot of citrus fruits is one of the most important limiting factors that reduce the life of harvested products and are one of the most important economical diseases in world’s citrus production areas. Two most important fungi that affect the citrus fruits, are green and blue molds which are produced by Penicillium digitatum and P. italicum, respectively. The disease are mainly managed by using the synthetic fungicides, but because of environmental hazards and appearance of resistant strains of the pathogen, the biological control by the use of bacterial, fungal and yeast antagonists can be suggested. The efficiency of yeasts such as Candida guilliermondii, C. saitoan, Pichia guilliermondi and Aureobasidium pullulans; the bacteria Pseudomonas fluorescens, Bacillus subtilis, Pantoea agglomerans and the fungus Muscodor albus, in controlling the green and blue molds of citrus is reported so far. In this paper, we tried to explain the method of biological control with emphasizing on the identification of useful microorganisms and their operation. 

Mr Noorallah Hasanpour, Mahdi Arzanlou,
Volume 12, Issue 1 (3-2023)
Abstract

Hasanpour, N., & Arzanlou M. (2023). Application of yeasts in plant diseases management. Plant Pathology Science 12(1), 94-104.      
 
Yeasts are widely distributed on earth.They play role in industries such as bakery, fermentation, protein production, the synthesis of chemicals such as riboflavin and citric acid, agriculture and plant diseases management. They are effective in reducing plant diseases. through a variety of mechanisms, such as competition for food and space, parasitic relationship with the pathogen, induction of plant resistance, mycoparasitism, ecological niche occupation, mycotoxin detoxification and production of cell wall degradation enzymes. The superior characteristics of yeasts are greater tolerance and adaptation to thermal fluctuations at low and high temperatures, adaptation in a wide range of relative humidity, pH fluctuations, low oxygen levels, high proliferation rate, limiting the pathogen population and tolerance to UV radiation. Due these characteristics, yeasts are considered as one of the best choices to use in the process of biological control. In this paper, the positive aspects of yeasts compared to other microbial agents, their role in agriculture and management mechanisms of plant diseases are discussed.


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