White-tip nematode, Aphelenchoides besseyi is a kind of widely distributed migratory parasitic nematode that can infect plant shoots. Transcriptome sequencing of plant parasitic nematodes and their host plants is helpful for understanding their interaction relationship. This study first reported expression patterns of defense-related genes in rice, and rice transcriptomes at different periods after infection with A. besseyi. The result showed that the defense response pathways of rice changed obviously in the early stage of A. besseyi infection, including upregulated salicylic acid and jasmonate pathways and a downregulated ethylene pathway. Transcriptome analysis results suggested that A. besseyi infection was associated with the downregulation of multiple genes related to photosynthesis with possible suppression of the photosynthetic activity. It suggested that the photosynthesis system of rice could be suppressed by infections of migratory nematodes, including A. besseyi and Hirschmanniella oryzae, but was stimulated by that of a sedentary nematode, Meloidogyne graminicola, by comparing our study with the reported transcriptome. OS09G0417800 (OsWRKY62) might play an important role in the interaction of migratory nematodes and rice. It also indicated that the infection strategy of both A. besseyi and the reported migratory nematode H. oryzae was similar to that of the fungal pathogen Magnaporthe grisea. These results provided an interesting starting point to elucidate the mechanism of the interaction between rice and A. besseyi, as well as the host and migratory plant nematodes.

中文翻译：

---

RNA-Seq显示，感染白色顶端线虫可能会下调水稻的光合基因。

白叶线虫Aphelenchoides besseyi是一种广泛分布的迁徙性寄生线虫，可感染植物新芽。植物寄生线虫及其寄主植物的转录组测序有助于理解它们的相互作用关系。这项研究首次报道的水稻防御有关的基因和水稻转录组表达模式在感染后不同时期A.干尖线虫。结果表明，水稻的防御反应途径在A. besseyi感染的早期发生了明显的变化，包括水杨酸和茉莉酸酯途径的上调以及乙烯途径的下调。转录组分析结果表明，贝氏拟南芥感染与与光合作用相关的多个基因的下调相关，并可能抑制光合作用活性。这表明，水稻的光合作用系统可以通过迁徙线虫，包括感染抑制A.干尖线虫和潜根霉，但被刺激的，久坐线虫的根结线虫蛛，通过我们的研究与报道的转录组进行比较。OS09G0417800（OsWRKY62）可能在迁徙线虫和水稻的相互作用中起重要作用。这也表明了贝塞球菌和报道的迁徙线虫米曲霉的感染策略与霉菌稻瘟病菌Magnaporthe相似。这些结果提供了一个有趣的起点，阐明了稻米与贝西米线虫以及寄主和迁徙植物线虫之间的相互作用机理。