Title: | Biochar applications decrease reproductive potential of the English grain aphid Sitobion avenae and upregulate defense-related gene expression |
Author(s): | Chen Y; Li R; Li B; Meng L; |
Address: | "College of Plant Protection, Key Laboratory of Integrated Pest Management in Crops in Eastern China, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China" |
ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
Abstract: | "BACKGROUND: The application of biochar as a targeted strategy for managing herbivorous pests is a topic of growing interest. The present study first determined the influence of biochar amendments on the reproductive performance of the English grain aphid Sitobion avenae, and then examined defense-related gene expression in the wheat plant as a function of biochar amendments and aphid feeding. RESULTS: Compared to the control, biocahr amendments decreased aphid lifetime fertility by 9.09% and 20.23% for amending levels at 3% and 5%, respectively; it reduced aphid population by 18.68%, 21.69%, and 28.70% for the levels at 1.5%, 3%, and 5%, respectively. Biochar applications increased silicon content more than 40% in wheat plants. Furthermore, biochar additions increased the expression of four defense-related genes (AOS, LOX, PAL and PR) in wheat plants with extension of feeding time by aphids. CONCLUSION: Our results suggest that biochar amendments to soils have detrimental consequences on the reproductive potential of the aphid on the wheat, and the effect may result from aphid-induced plant defenses being raised by biochar applications. (c) 2018 Society of Chemical Industry" |
Keywords: | Animals Aphids/drug effects/*genetics/growth & development/*physiology Charcoal/*pharmacology Fertility/drug effects/genetics Reproduction/drug effects/genetics Up-Regulation/*drug effects Aphididae biochar application herbivory-induced resistance phloem-; |
Notes: | "MedlineChen, Yong Li, Ran Li, Baoping Meng, Ling eng 2017YFD0201000/National Key R&D Program of China/ England 2018/10/26 Pest Manag Sci. 2019 May; 75(5):1310-1316. doi: 10.1002/ps.5245. Epub 2018 Dec 3" |