DOI: 10.3390/plants9020172
论文题名: Stimulation of insect herbivory by elevated temperature outweighs protection by the jasmonate pathway
作者: Havko N.E. ; Kapali G. ; Das M.R. ; Howe G.A.
刊名: Plants
ISSN: 22237747
出版年: 2020
卷: 9, 期: 2 语种: 英语
英文关键词: Arabidopsis
; Climate change
; Elevated temperature
; Jasmonate
; Plant-insect interaction
; Trichoplusia ni
英文摘要: Rising global temperatures are associated with increases in the geographic range, population size, and feeding voracity of insect herbivores. Although it is well established that the plant hormone jasmonate (JA) promotes durable resistance to many ectothermic herbivores, little is known about how JA-mediated defense is influenced by rising temperatures. Here, we used the Arabidopsis-Trichoplusia ni (cabbage looper) interaction to investigate the relative contribution of JA and elevated temperature to host resistance. Video monitoring of T. ni larval behavior showed that elevated temperature greatly enhanced defoliation by increasing the bite rate and total time spent feeding, whereas loss of resistance in a JA-deficient mutant did not strongly affect these behaviors. The acceleration of insect feeding at elevated temperature was not attributed to decreases in wound-induced JA biosynthesis, expression of JA-responsive genes, or the accumulation of defensive glucosinolates prior to insect challenge. Quantitative proteomic analysis of insect frass, however, provided evidence for a temperature-dependent increase in the production of T. ni digestive enzymes. Our results demonstrate that temperature-driven stimulation of T. ni feeding outweighs the protective effects of JA-mediated resistance in Arabidopsis, thus highlighting a potential threat to plant resilience in a warming world. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159837
Appears in Collections: 气候变化与战略
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作者单位: Department of Energy-Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, United States; Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, United States; Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI 48824, United States
Recommended Citation:
Havko N.E.,Kapali G.,Das M.R.,et al. Stimulation of insect herbivory by elevated temperature outweighs protection by the jasmonate pathway[J]. Plants,2020-01-01,9(2)