The rare sugar D-allose acts as a triggering molecule of rice defence via ROS generation

Only D-allose, among various rare monosaccharides tested, induced resistance to Xanthomonas oryzae pv. oryzae in susceptible rice leaves with defence responses: reactive oxygen species, lesion mimic formation, and PR-protein gene expression. These responses were suppressed by ascorbic acid or diphen...

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Veröffentlicht in:	Journal of experimental botany. - 1985. - 64(2013), 16 vom: 29. Nov., Seite 4939-51
1. Verfasser:	Kano, Akihito (VerfasserIn)
Weitere Verfasser:	Fukumoto, Takeshi, Ohtani, Kouhei, Yoshihara, Akihide, Ohara, Toshiaki, Tajima, Shigeyuki, Izumori, Ken, Tanaka, Keiji, Ohkouchi, Takeo, Ishida, Yutaka, Nishizawa, Yoko, Ichimura, Kazuya, Tada, Yasuomi, Gomi, Kenji, Akimitsu, Kazuya
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2013
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't NADPH oxidase Oryza sativa L d-Allose d-glucose 6-phosphate dehydrogenase hexokinase rare sugar. Plant Proteins Reactive Oxygen Species mehr... allose 6038-51-3 NADPH Oxidases EC 1.6.3.- Glucose IY9XDZ35W2

Beschreibung
Zusammenfassung:	Only D-allose, among various rare monosaccharides tested, induced resistance to Xanthomonas oryzae pv. oryzae in susceptible rice leaves with defence responses: reactive oxygen species, lesion mimic formation, and PR-protein gene expression. These responses were suppressed by ascorbic acid or diphenylene iodonium. Transgenic rice plants overexpressing OsrbohC, encoding NADPH oxidase, were enhanced in sensitivity to D-allose. D-Allose-mediated defence responses were suppressed by the presence of a hexokinase inhibitor. 6-Deoxy-D-allose, a structural derivative of D-allose unable to be phosphorylated, did not confer resistance. Transgenic rice plants expressing Escherichia coli AlsK encoding D-allose kinase to increase D-allose 6-phosphate synthesis were more sensitive to D-allose, but E. coli AlsI encoding D-allose 6-phosphate isomerase expression to decrease D-allose 6-phosphate reduced sensitivity. A D-glucose 6-phosphate dehydrogenase-defective mutant was also less sensitive, and OsG6PDH1 complementation restored full sensitivity. These results reveal that a monosaccharide, D-allose, induces rice resistance to X. oryzae pv. oryzae by activating NADPH oxidase through the activity of D-glucose 6-phosphate dehydrogenase, initiated by hexokinase-mediated conversion of D-allose to D-allose 6-phosphate, and treatment with D-allose might prove to be useful for reducing disease development in rice
Beschreibung:	Date Completed 23.06.2014 Date Revised 21.10.2021 published: Print-Electronic Citation Status MEDLINE
ISSN:	1460-2431
DOI:	10.1093/jxb/ert282