A rare sugar, d-allose, confers resistance to rice bacterial blight with upregulation of defense-related genes in Oryza sativa.
We investigated responses of rice plant to three rare sugars, d-altrose, d-sorbose, and d-allose, due to establishment of mass production methods for these rare sugars. Root growth and shoot growth were significantly inhibited by d-allose but not by the other rare sugars. A large-scale gene expression analysis using a rice microarray revealed that d-allose treatment causes a high upregulation of many defense-related, pathogenesis-related (PR) protein genes in rice. The PR protein genes were not upregulated by other rare sugars. Furthermore, d-allose treatment of rice plants conferred limited resistance of the rice against the pathogen Xanthomonas oryzae pv. oryzae but the other tested sugars did not. These results indicate that d-allose has a growth inhibitory effect but might prove to be a candidate elicitor for reducing disease development in rice.
Kano
Akihito
A
Faculty of Agriculture, Gene research Center and rare Sugar Research Center , Kagawa University, Miki , Kagawa, Japan.
Gomi
Kenji
K
Yamasaki-Kokudo
Yumiko
Y
Satoh
Masaru
M
Fukumoto
Takeshi
T
Ohtani
Kouhei
K
Tajima
Shigeyuki
S
Izumori
Ken
K
Tanaka
Keiji
K
Ishida
Yutaka
Y
Tada
Yasuomi
Y
Nishizawa
Yoko
Y
Akimitsu
Kazuya
K
D018506:Gene Expression Regulation, Plant / Q000187:drug effects* / Q000235:genetics / Q000502:physiology*; D005947:Glucose / Q000737:chemistry / Q000494:pharmacology*; D015394:Molecular Structure; D009005:Monosaccharides / Q000737:chemistry / Q000494:pharmacology; D012275:Oryza / Q000187:drug effects* / Q000235:genetics / Q000276:immunology / Q000382:microbiology*; D010935:Plant Diseases / Q000235:genetics / Q000276:immunology / Q000382:microbiology*; D013013:Sorbose / Q000737:chemistry / Q000494:pharmacology; D014974:Xanthomonas / Q000254:growth & development / Q000276:immunology
D009005:Monosaccharides; C002055:allose; D005947:Glucose; D013013:Sorbose