A method for plant protection against insects or nematodes

摘要

A method of protecting a plant or part of a plant from insect or nematode infestation is disclosed herein. The method includes the steps of: inserting into the genome of cells or tissue from a plant a sequence coding for equistatin operably linked to a promoter sequence active in the plant to cause expression of the protein at levels which provide an insect or nematode controlling amount of the protein; and regenerating resistant whole plants from the cells or tissue. Also disclosed is a transgenic plant or its sexual progeny which is resistant to attack by one or more insects or nematodes having digestive cysteine proteases. Also disclosed is an expression vehicle that includes a promotor effective to promote expression of a downstream coding sequence in plant cells, the expression vehicle being effective to express in plant cells insect controlling amounts of equistatin.