Bacillus simplex treatment promotes soybean defence against soybean cyst nematodes: A metabolomics study using GC-MS

We aimed to profile the metabolism of soybean roots that were infected with soybean cyst nematodes and treated with Bacillus simplex to identify metabolic differences that may explain nematode resistance. Compared with control soybean roots, B. simplex-treated soybean roots contained lower levels of...

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Bibliographic Details
Published in:PloS one 2020-08, Vol.15 (8), p.e0237194-e0237194
Main Authors: Kang, Wen-Shu, Chen, Li-Jie, Wang, Yuan-Yuan, Zhu, Xiao-Feng, Liu, Xiao-Yu, Fan, Hai-Yan, Duan, Yu-Xi
Format: Article
Language:English
Subjects:
Agriculture
Animals
Bacillus
Bacillus - pathogenicity
Bacillus simplex
Bacteria
Biology and Life Sciences
Carbohydrate Metabolism
Chromatography
Control
Disease Resistance
Diseases and pests
Food sources
Galactose
Gluconic acid
Glycine max - metabolism
Glycine max - microbiology
Glycine max - parasitology
Infections
Lactic acid
Maltose
Mass spectrometry
Medical treatment
Medicine and Health Sciences
Melibiose
Metabolism
Metabolites
Metabolome
Metabolomics
Mortality
Nematoda - pathogenicity
Nematodes
Noradrenaline
Norepinephrine
Observations
Physical Sciences
Plant Diseases - microbiology
Plant Diseases - parasitology
Plant metabolism
Plant Roots - metabolism
Plant Roots - microbiology
Plant Roots - parasitology
Quality control
Research and Analysis Methods
Roots
Roundworms
Scientific imaging
Seeds
Soybeans
Sucrose
Sugar
Supervision
Trehalose
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Summary:We aimed to profile the metabolism of soybean roots that were infected with soybean cyst nematodes and treated with Bacillus simplex to identify metabolic differences that may explain nematode resistance. Compared with control soybean roots, B. simplex-treated soybean roots contained lower levels of glucose, fructose, sucrose, and trehalose, which reduced the nematodes' food source. Furthermore, treatment with B. simplex led to higher levels of melibiose, gluconic acid, lactic acid, phytosphingosine, and noradrenaline in soybean roots, which promoted nematocidal activity. The levels of oxoproline, maltose, and galactose were lowered after B. simplex treatment, which improved disease resistance. Collectively, this study provides insight into the metabolic alterations induced by B. simplex treatment, which affects the interactions with soybean cyst nematodes.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0237194