Gut Transcriptome Analysis Shows Different Food Utilization Efficiency by the Grasshopper Oedaleous asiaticus (Orthoptera: Acrididae)

Oedaleus asiaticus B. Bienko is a persistent pest occurring in north Asian grasslands. We found that O. asiaticus feeding on Stipa krylovii Roshev. had higher approximate digestibility (AD), efficiency of conversion of ingested food (ECI), and efficiency of conversion of digested food (ECD), compare...

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Bibliographic Details
Published in:Journal of economic entomology 2017-08, Vol.110 (4), p.1831-1840
Main Authors: Huang, Xunbing, McNeill, Mark Richard, Ma, Jingchuan, Qin, Xinghu, Tu, Xiongbing, Cao, Guangchun, Wang, Guangjun, Nong, Xiangqun, Zhang, Zehua
Format: Article
Language:English
Subjects:
Animal Nutritional Physiological Phenomena
Animals
Carbohydrates
China
Conversion
Digestibility
Digestion
Digestive enzymes
Digestive system
Digestive tract
Efficiency
Energy Metabolism
Feeding
Female
Food
Food conversion
food utilization efficiency
Gastrointestinal Tract - metabolism
Gene expression
Genes
Grasshoppers - genetics
Grasshoppers - growth & development
Grasshoppers - physiology
grassland
Grasslands
Illumina HiSeq
Metabolism
MOLECULAR ENTOMOLOGY
Molecular modelling
Nutrition
Nymph - genetics
Nymph - growth & development
Nymph - physiology
Oedaleus asiaticus
Physiology
Plants (botany)
Stipa krylovii
Transcriptome
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Summary:Oedaleus asiaticus B. Bienko is a persistent pest occurring in north Asian grasslands. We found that O. asiaticus feeding on Stipa krylovii Roshev. had higher approximate digestibility (AD), efficiency of conversion of ingested food (ECI), and efficiency of conversion of digested food (ECD), compared with cohorts feeding on Leymus chinensis (Trin.) Tzvel, Artemisia frigida Willd., or Cleistogenes squarrosa (Trin.) Keng. Although this indicated high food utilization efficiency for S. krylovii, the physiological processes and molecular mechanisms underlying these biological observations are not well understood. Transcriptome analysis was used to examine how gene expression levels in O. asiaticus gut are altered by feeding on the four plant species. Nymphs (fifth-instar female) that fed on S. krylovii had the largest variation in gene expression profiles, with a total of 88 genes significantly upregulated compared with those feeding on the other three plants, mainly including nutrition digestive genes of protein, carbohydrate, and lipid digestion. GO and KEGG enrichment also showed that feeding S. krylovii could upregulate the nutrition digestion-related molecular function, biological process, and pathways. These changes in transcripts levels indicate that the physiological processes of activating nutrition digestive enzymes and metabolism pathways can well explain the high food utilization of S. krylovii by O. asiaticus.
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/tox128