Abstract
Plants are simultaneously attacked by different pests that rely on sugars uptake from plants. An understanding of the role of plant sugar allocation in these multipartite interactions is limited. Here, we characterized the expression patterns of sucrose transporter genes and evaluated the impact of targeted transporter gene mutants and brown planthopper (BPH) phloem-feeding and oviposition on root sugar allocation and BPH-reduced rice susceptibility to Meloidogyne graminicola. We found that the sugar transporter genes OsSUT1 and OsSUT2 are induced at BPH oviposition sites. OsSUT2 mutants showed a higher resistance to gravid BPH than to nymph BPH, and this was correlated with callose deposition, as reflected in a different effect on M. graminicola infection. BPH phloem-feeding caused inhibition of callose deposition that was counteracted by BPH oviposition. Meanwhile, this pivotal role of sugar allocation in BPH-reduced rice susceptibility to M. graminicola was validated on rice cultivar RHT harbouring BPH resistance genes Bph3 and Bph17. In conclusion, we demonstrated that rice susceptibility to M. graminicola is regulated by BPH phloem-feeding and oviposition on rice through differences in plant sugar allocation.
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Claims 7
Claim · model-written summary
Brown planthopper oviposition sites induce expression of the sugar transporter genes OsSUT1 and OsSUT2 in rice.
- Taxon
- rice
Oryza sativat0 - Interactor
- BPHe1pest
- Gene
- OsSUT1 and OsSUT2e1
- Outcome
- sugar transporter genese1
- Direction
- inducede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“infestation on rice”
e1“the sugar transporter genes OsSUT1 and OsSUT2 are induced at BPH oviposition sites”
Claim · model-written summary
OsSUT2 mutant rice showed higher resistance to gravid brown planthopper than to nymph brown planthopper.
- Taxon
- riceOryza sativat0
- Material
- OsSUT2 mutantse2
- Treatment
- gravid BPHe2
- Interactor
- BPHe2pest
- Gene
- OsSUT2e2
- Outcome
- resistancee2
- Direction
- highere2
- Comparator
- nymph BPHe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“infestation on rice”
e2“OsSUT2 mutants showed a higher resistance to gravid BPH than to nymph BPH”
Claim · model-written summary
Higher resistance of OsSUT2 mutants was correlated with callose deposition.
- Taxon
- riceOryza sativat0
- Material
- OsSUT2 mutantse2
- Outcome
- callose depositione3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“infestation on rice”
e2“OsSUT2 mutants showed a higher resistance to gravid BPH than to nymph BPH”
e3“this was correlated with callose deposition”
Claim · model-written summary
Brown planthopper phloem-feeding inhibited callose deposition in rice.
- Taxon
- riceOryza sativat0
- Treatment
- BPH phloem-feedinge4
- Interactor
- BPHe4pest
- Outcome
- callose depositione4
- Direction
- inhibitione4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“infestation on rice”
e4“BPH phloem-feeding caused inhibition of callose deposition”
Claim · model-written summary
Brown planthopper oviposition counteracted the inhibition of callose deposition.
- Taxon
- riceOryza sativat0
- Treatment
- BPH ovipositione5
- Interactor
- BPHe5pest
- Outcome
- callose depositione5
- Direction
- counteractede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“infestation on rice”
e5“inhibition of callose deposition that was counteracted by BPH oviposition”
Claim · model-written summary
Rice susceptibility to Meloidogyne graminicola is regulated by brown planthopper phloem-feeding and oviposition through differences in plant sugar allocation.
- Taxon
- riceOryza sativat0
- Treatment
- BPH phloem-feeding and ovipositione6
- Interactor
- M. graminicolaMeloidogyne graminicolae6pest
- Second interactor
- BPHe6pest
- Outcome
- rice susceptibility to M. graminicolae6
- Qualifier
- through differences in plant sugar allocatione6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“infestation on rice”
e6“rice susceptibility to M. graminicola is regulated by BPH phloem-feeding and oviposition on rice through differences in plant sugar allocation”
Claim · model-written summary
Brown planthopper reduced rice susceptibility to Meloidogyne graminicola in cultivar RHT carrying Bph3 and Bph17.
- Taxon
- riceOryza sativat0
- Material
- RHTe7
- Interactor
- M. graminicolaMeloidogyne graminicolae7pest
- Second interactor
- BPHe7pest
- Gene
- Bph3 and Bph17e7
- Outcome
- rice susceptibility to M. graminicolae7
- Direction
- reducede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“infestation on rice”
e7“this pivotal role of sugar allocation in BPH-reduced rice susceptibility to M. graminicola was validated on rice cultivar RHT harbouring BPH resistance genes Bph3 and Bph17”
The same questions in other papers
Nilaparvata lugens · molecular: metabolites · Oryza sativa (rice)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
4 papers more in this group
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