Journal
Plant Pathology Journal
Volume 32, Issue 4, Pages 357-362Publisher
KOREAN SOC PLANT PATHOLOGY
DOI: 10.5423/PPJ.NT.10.2015.0213
Keywords
AGD2-LIKE DEFENSE 1 (ALD1); disease resistance plant; genetically modified plant; Magnaporthe oryzae; Oryza sativa
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Funding
- Wu Jang-Choon Project from the Rural Development Administration (RDA) [PJ007850052014]
- National Research Foundation (NRF) of Korea [2010-0006441]
- National Research Foundation of Korea [2010-0006441] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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ALD1 (ABERRANT GROWTH AND DEATH2 [AGD2]-LIKE DEFENSE1) is one of the key defense regulators in Arabidopsis thaliana and Nicotiana bentharadana. In these model plants, ALD1 is responsible for triggering basal defense response and systemic resistance against bacterial infection. As well ALD1 is involved in the production of pipecolic acid and an unidentified compound(s) for systemic resistance and priming syndrome, respectively. These previous studies proposed that ALD1 is a potential candidate for developing genetically modified (GM) plants that may be resistant to pathogen infection. Here we introduce a role of ALD1-LIKE gene of Oryza sativa, named as OsALD1, during plant immunity. OsALD1 mRNA was strongly transcribed in the infected leaves of rice plants by Magnaporthe oryzae, the rice blast fungus. OsALD1 proteins predominantly localized at the chloroplast in the plant cells. GM rice plants over-expressing OsALD1 were resistant to the fungal infection. The stable expression of OsALD1 also triggered strong mRNA expression of PATHOGENESIS-RELATED PROTEIN1 genes in the leaves of rice plants during infection. Taken together, we conclude that OsALD1 plays a role in disease resistance response of rice against the infection with rice blast fungus.
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