Application of solanum lycopersicum SlTRXz gene as restraining target to defence of meloidogyne incognita

Abstract

The invention discloses an application of a solanum lycopersicum SlTRXz gene as a restraining target to defence of meloidogyne incognita. The invention claims protection of a method for cultivating plants capable of improving resistance to root-knot nematode. The method comprises the following steps of restraining expression of an SlTRXz gene in plants to obtain the plants capable of improving resistance to root-knot nematode. The content and/or activity of SlTRXz proteins in the plants is reduced, and the resistance of the plants to the root-knot nematode is improved. The expression quantityof the SlTRXz gene in the plants is reduced, and the resistance of the plants to the root-knot nematode is increased. The abundance of the SlTRXz gene in transcription products in the plants is reduced, and the resistance of the plants to the root-knot nematode is improved. A solanum lycopersicum SlTRXz instantaneous silencing strain is obtained through a virus induced gene silencing technique, after the root-knot nematode is inoculated, the inventor finds that the root knot index is significantly, that is to say, the resistance of the plants to the root-knot nematode is improved. Related genes of solanum lycopersicum for adjusting and controlling the resistance to the root-knot nematode are enriched, and reference is provided for solanum lycopersicum breeding and increase of yield in biological adverse circumstances.

Description

technical field [0001] The invention belongs to the field of biotechnology, and relates to the application of tomato S1TRXz gene as an inhibition target in defense against root-knot nematode incognita. Background technique [0002] Root-knot nematode is a highly destructive plant parasitic nematode. It is one of the most difficult vegetable diseases to control in the world. It is widely distributed all over the world and infects more than 3,000 species of plants. After the disease occurs, it will generally cause a 10% reduction in yield. %-20%, more than 75% in severe cases. [0003] Tomato is one of the most commonly cultivated fruits and vegetables in the world. In my country, it is mainly cultivated on a large scale in greenhouses, plastic greenhouses and other protected facilities. However, in recent years, with the gradual expansion of protected cultivation area and the increase of multiple cropping index, the harm of root-knot nematode has become increasingly serious....

AI Technical Summary

Problems solved by technology

Root-knot nematodes mainly infect the fibrous roots and lateral roots of tomatoes. After dissecting the root-knot, it can be observed that there are many small milky-white nematodes buried in the diseased tissue, and the root-knot grows thin new roots, which will be infected again and form Fat, swollen, deformed and tumor-like knots, which cause a series of damage to the root system of tomato, and then affect the growth of the whole plant

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