期刊
JOURNAL OF PLANT PHYSIOLOGY
卷 161, 期 1, 页码 53-62出版社
ELSEVIER GMBH
DOI: 10.1078/0176-1617-01179
关键词
brown planthopper (Nilaparvata lugens); cDNA array; gene expression; Northern blot analysis; rice (Oryza sativa)
Plant responses to herbivores are complex. 108 c;DNA clones representing genes relating to plant responses to chewing insect-feeding, pathogen infection, wounding and other stresses were collected. Northern blot and cDNA array analysis were employed to investigate gene expression regulated by piercing-sucking insect, brown planthopper (BPH), Nilaparvata lugens (Homoptera: Dephacidae) on both the resistant and susceptible rice genotypes. After BPH feeding in rice for 72 h, the expression of most tested genes was affected. 14 genes in resistant rice variety B5 and 44 genes in susceptible MH63 were significantly up- or down-regulated. Most of the well-regulated genes were grouped in the categories of signaling pathways, oxidative stress/apoptosis, wound-response, drought-inducible and pathogen-related proteins. Those related to the flavonoid pathway, aromatic metabolidsm and the octadecanoid pathway were mostly kept unchanged or down-regulated. Our results indicate that BPH feeding induces plant responses which would take part in a jasmonic acid-independent pathway and crosstalk with those related to abiotic; stress, pathogen invasion and phytohormone signaling pathways.
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