Analysis of Tobacco Root Knot Nematode Diseases

Root-knot nematode (Meloidogyne spp.) disease is one of the important pathogenic organisms that harm crops. It is widely distributed worldwide with a wide range of hosts, especially in tropical and subtropical areas. Tobacco root-knot nematodes are plant parasitic nematodes which mainly feed on plant roots, causing tumors in plant roots, making nutrient absorption difficult, and even decay, thus affecting crop yield. More than 80 species of root-knot nematodes have been reported. It was first reported in 1892 and has occurred in the United States and other places since 1950. At present, it has been reported in major smoke-producing areas around the world.

Lifeasible is a credible provider of high-quality functional analysis services for tobacco root knot nematode diseases in plants. ​Our platform has state-of-the-art facilities and highly experienced staff to support projects in all areas. We guarantee to deliver results on time to our customers.

Pathogen Analysis of Tobacco Root Knot Nematode Diseases

• More than 90 species of root knot nematodes and 3,000 host plants have been reported, covering almost all vascular plants. And it was found that the area of mixed infection of various tobacco root-knot nematodes increased yearly.
• It is important to identify the root knot nematodes that harm tobacco for the prevention and control of root knot nematodes. Lifeasible provides identification methods, mainly including morphological characterization, molecular biology identification, isoenzyme phenotype analysis, cytogenetics, host identification tests, etc.

Analysis of the Root Knot Nematode-Plant-Soil Association

Fig.1 Root knot nematode.

• There is a complex relationship between root-knot nematodes, plants, and soil in the root zone. Root knot nematodes can cause disordered plant root secretions, which can affect soil microbial community structure and soil enzyme activity. In addition, soil microbial community structure and soil enzyme activity are closely related to soil nutrient status. The biological characteristics of plants themselves are related to soil microorganisms and nutrient status.
• We provide an analysis of the relationship between root-knot nematodes and plants, including plant nutrition, water, enzyme activity, and plant hormone levels. We also provide an analysis of the relationship between root-knot nematodes and soil, including soil temperature, moisture, pH, etc.

Analysis of Pathogenic Mechanism

• The J2 larva of tobacco root knot nematode is infectious. When J2 larvae leave the oocysts, they are attracted to the root exudates of the host plant, which determine the infection site of J2 larvae in the plant roots. Many acids and hormones are attractive to plant nematodes.
• We provide a mechanism analysis of the harm caused by tobacco root-knot nematodes, mainly by robbing the host of nutrients, disrupting hormone balance, and causing mechanical damage and inducing various diseases.

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