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Alginate oligosaccharide enhances plant resistance to Phytophthora infestans

BZ Oligo

When plants are attacked by biological or abiotic factors in nature, they stimulate the immune system and produce a series of physiological and biochemical changes to slow down the damage. However, the immune regulation function of plants is limited, and the infection of pathogenic bacteria cannot be completely avoided, which can easily lead to crop yield reduction and cause huge economic losses. Plant immune inducers are a new class of biological agents, which can activate the defense response by inducing the plant's own immune system, enhance plant disease resistance, and reduce the use of chemical pesticides, with less harm to humans and the environment. A new type of green prevention and control technology. Oligosaccharides are biological elicitors that induce plants to produce defense responses. They can be recognized by immune recognition receptors on the surface of plant cells at low concentrations, inducing plants to produce a series of immune responses and ultimately enhancing plant disease resistance. ability. Studies have shown that Alginate oligosaccharide (AOS) plays an important role in regulating plant physiological activities, such as participating in root growth, promoting plant growth and development, enhancing plant cold resistance and salt resistance, and regulating plant immune responses.

Phytophthora infestans is the pathogen of plant late blight, and its host range is very wide. The potato late blight caused by it causes great harm to crops and has become the first major grain disease. In order to study whether Alginate oligosaccharide can enhance the resistance of plants to Phytophthora infestans, N. benthamiana and Arabidopsis with similar seedling age and good growth were selected. Good Phytophthora infestans were inoculated on the same part of the leaves, placed in a plastic dish, sprayed with water regularly, and repeated 3 times. After about 3 days, it can be observed with the naked eye: the leaves of the plants treated with ddH2O are more severely yellowed, and the area of disease spots is relatively large, while the phenomenon of withering and wilting of the leaves of the plants sprayed with AOS is significantly reduced (as shown in Figure 1-2). The growth of Phytophthora infestans was detected by qRT-PCR. The results were consistent with the phenotype. The growth of Phytophthora infestans in the AOS-treated plants was significantly lower than that in the control, indicating that Alginate oligosaccharide can enhance the plant's ability to respond to infestation. Mildew tolerance.

The article is from "Study on the induction of plant disease resistance by Alginate oligosaccharides"

BZ Oligo mainly offer marine oligosaccharide standards and ingredients, containing alginate oligosaccharide, chitosan oligosaccharide, agar oligosaccharide and carrageenan oligosaccharide, which give business opportunities using these untapped oligosaccharides for biological applications targeting lab research, pharmacy, dietary supplement, sustainable agriculture and animal health. 

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