Abstract
) is an economically important belowground pest of maize. Belowground feeding by WCR is damaging because it weakens the roots system, diminishes nutrient uptake, and creates entry points for fungal and bacterial pathogens and increases lodging, all of which can significantly suppress maize yields. Previously, it was demonstrated that belowground herbivory can trigger plant defense responses in the roots and the shoots, thereby impacting intraplant communication. Although several aspects of maize-WCR interactions have been reported, co-transcriptomic remodeling in the plant and insect are yet to be explored. We used a maize genotype, Mp708, that is resistant to a large guild of herbivore pests to study the underlying plant defense signaling network between below and aboveground tissues. We also evaluated WCR compensatory transcriptome responses. Using RNA-seq, we profiled the transcriptome of roots and leaves that interacted with WCR infestation up to 5 days post infestation (dpi). Our results suggest that Mp708 shoots and roots had elevated constitutive and WCR-feeding induced expression of genes related to jasmonic acid and ethylene pathways, respectively, before and after WCR feeding for 1 and 5 days. Similarly, extended feeding by WCR for 5 days in Mp708 roots suppressed many genes involved in the benzoxazinoid pathway, which is a major group of indole-derived secondary metabolites that provides resistance to several insect pests in maize. Furthermore, extended feeding by WCR on Mp708 roots revealed several genes that were downregulated in WCR, which include genes related to proteolysis, neuropeptide signaling pathway, defense response, drug catabolic process, and hormone metabolic process. These findings indicate a dynamic transcriptomic dialog between WCR and WCR-infested maize plants.
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Claims 4
Claim · model-written summary
Mp708 shoots had elevated constitutive and WCR-feeding induced expression of genes related to the jasmonic acid pathway before and after WCR feeding.
- Material
- Mp708e1
- Organ / stage
- shootse1
- Treatment
- WCR-feedinge1
- Interactor
- WCRe1pest
- Outcome
- expression of genes related to jasmonic acid and ethylene pathwayse1
- Direction
- elevatede1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Mp708 shoots and roots had elevated constitutive and WCR-feeding induced expression of genes related to jasmonic acid and ethylene pathways, respectively”
t0“Maize”
Claim · model-written summary
Mp708 roots had elevated constitutive and WCR-feeding induced expression of genes related to the ethylene pathway before and after WCR feeding.
- Material
- Mp708e1
- Organ / stage
- rootse1
- Treatment
- WCR-feedinge1
- Interactor
- WCRe1pest
- Outcome
- expression of genes related to jasmonic acid and ethylene pathwayse1
- Direction
- elevatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Mp708 shoots and roots had elevated constitutive and WCR-feeding induced expression of genes related to jasmonic acid and ethylene pathways, respectively”
t0“Maize”
Claim · model-written summary
Extended WCR feeding for 5 days on Mp708 roots suppressed many genes involved in the benzoxazinoid pathway.
- Material
- Mp708e1
- Organ / stage
- rootse1
- Treatment
- extended feeding by WCR for 5 dayse1
- Interactor
- WCRe1pest
- Outcome
- genes involved in the benzoxazinoid pathwaye1
- Direction
- suppressede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“extended feeding by WCR for 5 days in Mp708 roots suppressed many genes involved in the benzoxazinoid pathway”
t0“Maize”
Claim · model-written summary
Extended WCR feeding on Mp708 roots was accompanied by downregulation in WCR of genes related to proteolysis, neuropeptide signaling, defense response, drug catabolic process and hormone metabolic process.
- Material
- Mp708e1
- Interactor
- WCRe1pest
- Outcome
- several genes that were downregulated in WCRe1
- Direction
- downregulatede1
- Qualifier
- genes related to proteolysis, neuropeptide signaling pathway, defense response, drug catabolic process, and hormone metabolic processe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“extended feeding by WCR on Mp708 roots revealed several genes that were downregulated in WCR, which include genes related to proteolysis, neuropeptide signaling pathway, defense response, drug catabolic process, and hormone metabolic process”
t0“Maize”
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