Ento(o)mics: the intersection of ‘omic’ approaches to decipher plant defense against sap-sucking insect pests
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TLDR
This review will provide a concise summary of application of 'omic' technologies and their utilization in plant and sap-sucking insect interaction studies, and provide a perspective on the integration of 'omics' data in uncovering novel plant defense mechanisms against sap-magnifying insect pests.About:
This article is published in Current Opinion in Plant Biology.The article was published on 2020-07-25 and is currently open access. It has received 34 citations till now.read more
Citations
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Journal ArticleDOI
The Epidemiology of Plant Virus Disease: Towards a New Synthesis.
TL;DR: It is argued here that incorporating an epidemiological perspective, specifically quantitative, into this developing synthesis can serve to further consolidate and transform epidemiology as a key element in plant virus research and disease management.
Global Responses of Resistant andSusceptible Sorghum ( Sorghumbicolor ) to Sugarcane Aphid( Melanaphis saccharid )
Hannah M. Tetreault,Sajjan Grover,Erin D. Scully,Tammy Gries,Nathan A. Palmer,Gautam Sarath,Joe Louis,Scott E. Sattler +7 more
Abstract: The sugarcane aphid (Melanaphis sacchari) has emerged as a significant pest for sorghum. The use of sugarcane aphid-resistant sorghum germplasm with integrated pest management strategies appears to be an excellent solution to this problem. In this study, a resistant line (RTx2783) and a susceptible line (A/BCK60) were used to characterize the differences in plant responses to the sugarcane aphid through a series of experiments, which examined global sorghum gene expression, aphid feeding behavior and inheritance of aphid resistance. The global transcriptomic responses to sugarcane aphids in resistant and susceptible plants were identified using RNA-seq and compared to the expression profiles of uninfested plants at 5, 10, and 15 days post-infestation. The expression of genes from several functional categories were altered in aphid-infested susceptible plants, which included genes related to cell wall modification, photosynthesis and phytohormone biosynthesis. In the resistant line, only 31 genes were differentially expressed in the infested plants relative to uninfested plants over the same timecourse. However, network analysis of these transcriptomes identified a co-expression module where the expression of multiple sugar and starch associated genes were repressed in infested resistant plants at 5 and 10 days. Several nucleotide-binding-site, leucine-rich repeat (NBS-LRR) and disease resistance genes similar to aphid resistance genes identified in other plants are identified in the current study which may be involved in sugarcane aphid resistance. The electrical penetration graph (EPG) results indicated that sugarcane aphid spent approximately twice as long in non-probing phase, and approximately a quarter of time in phloem ingestion phase on the resistant and F1 plants compared to susceptible plant. Additionally, network analysis identified a phloem protein 2 gene expressed in both susceptible and resistant plants early (day 5) of infestation, which may contribute to defense against aphid feeding within sieve elements. The resistant line RTx2783 displayed both antixenosis and antibiosis modes of resistance based on EPG and choice bioassays between susceptible, resistant and F1 plants. Aphid resistance from RTx2783 segregated as a single dominant locus in the F2 generation, which will enable breeders to rapidly develop sugarcane aphid-resistant hybrids using RTx2783 as the male parent.
Journal ArticleDOI
Interplay of phytohormones facilitate sorghum tolerance to aphids
TL;DR: The findings imply that the aphid-tolerant sorghum genotype tightly controls the relationship among phytohormones, as well as provide significant insights into the underlying mechanisms that contribute to plant tolerance to sap-sucking aphids.
Journal ArticleDOI
Proteomics and Metabolomics Studies on the Biotic Stress Responses of Rice: an Update
Kieu Thi Xuan Vo,Mizanor Rahman,Md. Mustafizur Rahman,Kieu Thi Thuy Trinh,Sun Tae Kim,Jong-Seong Jeon +5 more
TL;DR: In this article, the most common changes were seen in photosynthesis which is modified differently by rice plants to conserve energy, disrupt food supply for biotic stress agent, and initiate defense mechanisms or by biotic stressedors to facilitate invasion and acquire nutrients, depending on their feeding style.
Journal ArticleDOI
Aphid-Responsive Defense Networks in Hybrid Switchgrass.
Kyle G. Koch,Nathan A. Palmer,Nathan A. Palmer,Teresa Donze-Reiner,Erin D. Scully,Javier Seravalli,Keenan Amundsen,Paul Twigg,Joe Louis,Jeffrey D. Bradshaw,Tiffany Heng-Moss,Gautam Sarath,Gautam Sarath +12 more
TL;DR: Hormone and metabolite analyses and RNA-Seq analysis of plant transcriptomes were utilized to delineate defense networks induced by aphid feeding in SxK switchgrass and pinpoint plant transcription factors (TFs) that potentially regulate these responses.
References
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Serge Savary,Laetitia Willocquet,Sarah J. Pethybridge,Paul D. Esker,Neil McRoberts,Andrew Nelson +5 more
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Molecular sabotage of plant defense by aphid saliva
TL;DR: It is demonstrated in vitro that aphid saliva induces dispersed forisomes to revert back to the nonplugging contracted state, and this provides aphids with access to a continuous flow of phloem sap and is a critical adaptation instrumental in the evolutionary success of aphids.
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Genome sequencing of the sweetpotato whitefly Bemisia tabaci MED/Q
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TL;DR: These MED/Q genomic resources lay a foundation for future ‘pan-genomic’ comparisons of invasive vs. noninvasive, invasive versus.
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