Maritime root-knot nematode

Meloidogyne maritima belongs to the family Meloidogynidae, order Tylenchida. This specialized phytonematode is recognized for its ability to infest the roots of various plants, often found in coastal or saline environmental settings, making it a unique threat to specific flora and cultivated crops.

The host range of this nematode includes various plant species that thrive in its natural habitat. When introduced to agricultural environments, it can infect a range of vegetables and ornamental plants, causing significant economic losses if the population density reaches high levels in the soil.

The life cycle begins with infective second-stage juveniles that migrate through the soil to find a suitable root. Upon penetration, they establish a feeding site, stimulating the root tissue to form galls. The female nematode remains stationary within this gall, molting and producing eggs that continue the infestation cycle.

Symptoms of infestation are primarily observed in the root system as characteristic knots or galls. The damage results in the disruption of nutrient and water uptake, leading to stunted growth, wilting of the leaves, yellowing (chlorosis), and in severe cases, the death of the plant.

Management strategies focus on prevention and sanitation. Key practices include:

• Using certified nematode-free planting stock.
• Implementing crop rotation with non-host species.
• Applying soil solarization in controlled environments.
• Using biological control agents such as antagonistic fungi.
• Chemical treatments with nematicides where authorized.