Open AccessA Rare Sugar, d -Allose, Confers Resistance to Rice Bacterial Blight with Upregulation of Defense-Related Genes in Oryza sativa
Author(s) -
Akihito Kano,
Kenji Gomi,
Yumiko Yamasaki,
Masaru Satoh,
Takeshi Fukumoto,
K. Ohtani,
Shigeyuki Tajima,
Ken Izumori,
Keiji Tanaka,
Yutaka Ishida,
Yutaka Tada,
Yuji Nishizawa,
Kazuya Akimitsu
Publication year - 2010
Publication title -
phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.264
H-Index - 131
eISSN - 1943-7684
pISSN - 0031-949X
DOI - 10.1094/phyto-100-1-0085
Subject(s) - xanthomonas oryzae , biology , oryza sativa , xanthomonas oryzae pv. oryzae , gene , elicitor , downregulation and upregulation , plant disease resistance , sugar , microbiology and biotechnology , chitinase , botany , biochemistry
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.