Brown planthopper infestation on rice reduces plant susceptibility to Meloidogyne graminicola by reducing root sugar allocation
文献类型： 外文期刊
作者： Xiao, Liying 1 ; Gheysen, Godelieve 3 ; Yang, Mingwei 4 ; Xiao, Xueqiong 1 ; Xu, Lihe 2 ; Guo, Xiaoli 1 ; Yang, Lijie 1 ; Liu, Wen 4 ; He, Yueping 4 ; Peng, Deliang 5 ; Peng, Huan 5 ; Ma, Kangsheng 2 ; Long, Haibo 6 ; Wang, Gaofeng 1 ; Xiao, Yannong 2 ;
作者机构： 1.Huazhong Agr Univ, State Key Lab Agr Microbiol, Wuhan 430070, Peoples R China
2.Huazhong Agr Univ, Coll Plant Sci & Technol, Key Lab Plant Pathol Hubei Prov, Wuhan 430070, Peoples R China
3.Univ Ghent, Fac Biosci Engn, Dept Biotechnol, Proeftuinstr 86, B-9000 Ghent, Belgium
4.Huazhong Agr Univ, Coll Plant Sci & Technol, Hubei Key Lab Insect Resources Utilizat & Sustaina, Wuhan 430070, Peoples R China
5.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China
6.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Haikou 571101, Peoples R China
关键词： Nilaparvata lugens; oviposition; phloem-feeding; rice root-knot nematode; sugar allocation; tripartite interaction
期刊名称：NEW PHYTOLOGIST （ 影响因子：9.4； 五年影响因子：10.5 ）
ISSN： 0028-646X
年卷期： 2024 年 242 卷 1 期
页码：
收录情况： SCI
摘要： 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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