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211.
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Kazuhiro Toyoda Yuriko Kawanishi Yuriko Kawamoto Chiaki Kurihara Noriko Yamagishi Akihiro Tamura Nobuyuki Yoshikawa Yoshishige Inagaki Yuki Ichinose Tomonori Shiraishi 《Journal of General Plant Pathology》2013,79(5):321-334
Using a recently developed model pathosystem involving Medicago truncatula and Mycosphaerella pinodes, causal agent of Mycosphaerella blight on pea to understand host molecular response to a fungal suppressor, we applied the suppressor to leaves of M. truncatula and identified 151 nonredundant cDNA fragments as newly expressed genes. These included genes encoding lipoxygenase (LOX) and enoyl-CoA hydratase, which are presumably involved in jasmonic acid (JA) synthesis. Potential genes encoding plastidic enzymes, including allene oxide synthase (AOS) and allene oxide cyclase (AOC), and other peroxisomal enzymes involved in β-oxidation were predicted from the Medicago Gene Index EST database and tested for altered expression by semiquantitative RT-PCR. The coordinated expression of genes encoding both plastidic and peroxisomal enzymes showed that the suppressor likely conditions certain cellular process(es) through the JA synthesis in M. truncatula. To explore the role of JA or JA-regulated cellular process(es) in conditioning susceptibility, we used an Apple latent spherical virus (ALSV)-based virus-induced gene silencing (VIGS) technology to silence pea genes including LOX, AOS, AOC and 12-oxo-phytodienoic acid reductase (OPR). In LOX-, AOS-, AOC- or OPR-silenced pea plants, disease development induced by M. pinodes was remarkably reduced. Similarly, silencing of mRNA for LOX, AOS, AOC or OPR reduced the sensitivity to a phytotoxin, coronatine, which is believed to act through a JA-dependent process. On the basis of these results, it is conceivable that M. pinodes has evolved a strategy to condition susceptibility by manipulating the physiology of host cells, in particular JA-regulated cellular process(es), to promote disease development in pea. 相似文献
213.
Matsuda Y Sameshima T Moriura N Inoue K Nonomura T Kakutani K Nishimura H Kusakari S Takamatsu S Toyoda H 《Phytopathology》2005,95(10):1137-1143
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215.
Masamichi Isogai Saki Muramatu Manabu Watanabe Nobuyuki Yoshikawa 《Journal of General Plant Pathology》2013,79(2):123-127
A novel latent closterovirus was detected from highbush blueberry in Japan and provisionally named blueberry virus A (BVA). The BVA genome (17,798 nucleotides) contains 10 open reading frames, but no minor coat protein could be identified in the virus genome. The BVA RNA-dependent RNA polymerase (RdRp), heat shock protein 70 homolog (HSP70h), and major coat protein (CP) shared the highest amino acid sequence identities with those of viruses in the genus Closterovirus (61.2, 27.6, and 20.9 %, respectively). In a phylogenetic analysis of the RdRp, HSP70h, and CP, BVA did not cluster with any genus in the family Closteroviridae. 相似文献