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A Bacillus thuringiensis Cry protein controls soybean cyst nematode in transgenic soybean plants
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A Bacillus thuringiensis Cry protein controls soybean cyst nematode in transgenic soybean plants
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Journal Article
A Bacillus thuringiensis Cry protein controls soybean cyst nematode in transgenic soybean plants
2021
Overview
Plant-parasitic nematodes (PPNs) are economically important pests of agricultural crops, and soybean cyst nematode (SCN) in particular is responsible for a large amount of damage to soybean. The need for new solutions for controlling SCN is becoming increasingly urgent, due to the slow decline in effectiveness of the widely used native soybean resistance derived from genetic line PI 88788. Thus, developing transgenic traits for controlling SCN is of great interest. Here, we report a
Bacillus thuringiensis
delta-endotoxin, Cry14Ab, that controls SCN in transgenic soybean. Experiments in
C. elegans
suggest the mechanism by which the protein controls nematodes involves damaging the intestine, similar to the mechanism of Cry proteins used to control insects. Plants expressing Cry14Ab show a significant reduction in cyst numbers compared to control plants 30 days after infestation. Field trials also show a reduction in SCN egg counts compared with control plants, demonstrating that this protein has excellent potential to control PPNs in soybean.
Genetic resistance to soybean cyst nematode (SCN) is beginning to decline. Here, the authors report that soybean lines expressing the
Bacillus thuringiensis
protein Cy14Ab have significant levels of protection from SCN in both greenhouse and field trials.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
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/ Animals
/ Bacillus thuringiensis - genetics
/ Bacillus thuringiensis Toxins - genetics
/ Bacillus thuringiensis Toxins - metabolism
/ Crops, Agricultural - genetics
/ Crops, Agricultural - metabolism
/ Crops, Agricultural - parasitology
/ Damage
/ Disease Resistance - genetics
/ Female
/ Hemolysin Proteins - genetics
/ Hemolysin Proteins - metabolism
/ Humanities and Social Sciences
/ Insects
/ Pests
/ Plant Diseases - parasitology
/ Plants, Genetically Modified - genetics
/ Plants, Genetically Modified - metabolism
/ Plants, Genetically Modified - parasitology
/ Proteins
/ Science
/ Soybeans
/ Tylenchoidea - isolation & purification
/ Tylenchoidea - pathogenicity
/ Worms
