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Involvement of OsJAZ8 in jasmonate-induced resistance to bacterial blight in rice.
Plant Cell Physiol. 2012 Dec; 53(12):2060-72.PC

Abstract

The plant hormone jasmonic acid (JA) has a crucial role in both host immunity and development in plants. Here, we report the importance of JA signaling in the defense system of rice. Exogenous application of JA conferred resistance to bacterial blight caused by Xanthomonas oryzae pv. oryzae (Xoo) in rice. Expression of OsJAZ8, a rice jasmonate ZIM-domain protein, was highly up-regulated by JA. OsJAZ8 interacted with a putative OsCOI1, which is a component of the SCF(COI1) E3 ubiquitin ligase complex, in a coronatine-dependent manner. OsJAZ8 also formed heterodimers with other OsJAZ proteins but did not form homodimer. JA treatment caused OsJAZ8 degradation and this degradation was dependent on the 26S proteasome pathway. Furthermore, the JA-dependent OsJAZ8 degradation was mediated by the Jas domain. Transgenic rice plants overexpressing OsJAZ8ΔC, which lacks the Jas domain, exhibited a JA-insensitive phenotype. A large-scale analysis using a rice DNA microarray revealed that overexpression of OsJAZ8ΔC altered the expression of JA-responsive genes, including defense-related genes, in rice. Furthermore, OsJAZ8ΔC negatively regulated the JA-induced resistance to Xoo in rice. On the basis of these data, we conclude that JA plays an important role in resistance to Xoo, and OsJAZ8 acts as a repressor of JA signaling in rice.

Authors+Show Affiliations

Kagawa University, Miki, Kagawa, 761-0795 Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

23104764

Citation

Yamada, Shoko, et al. "Involvement of OsJAZ8 in Jasmonate-induced Resistance to Bacterial Blight in Rice." Plant & Cell Physiology, vol. 53, no. 12, 2012, pp. 2060-72.
Yamada S, Kano A, Tamaoki D, et al. Involvement of OsJAZ8 in jasmonate-induced resistance to bacterial blight in rice. Plant Cell Physiol. 2012;53(12):2060-72.
Yamada, S., Kano, A., Tamaoki, D., Miyamoto, A., Shishido, H., Miyoshi, S., Taniguchi, S., Akimitsu, K., & Gomi, K. (2012). Involvement of OsJAZ8 in jasmonate-induced resistance to bacterial blight in rice. Plant & Cell Physiology, 53(12), 2060-72. https://doi.org/10.1093/pcp/pcs145
Yamada S, et al. Involvement of OsJAZ8 in Jasmonate-induced Resistance to Bacterial Blight in Rice. Plant Cell Physiol. 2012;53(12):2060-72. PubMed PMID: 23104764.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Involvement of OsJAZ8 in jasmonate-induced resistance to bacterial blight in rice. AU - Yamada,Shoko, AU - Kano,Akihito, AU - Tamaoki,Daisuke, AU - Miyamoto,Ayumi, AU - Shishido,Hodaka, AU - Miyoshi,Seika, AU - Taniguchi,Shiduku, AU - Akimitsu,Kazuya, AU - Gomi,Kenji, Y1 - 2012/10/26/ PY - 2012/10/30/entrez PY - 2012/10/30/pubmed PY - 2013/9/5/medline SP - 2060 EP - 72 JF - Plant & cell physiology JO - Plant Cell Physiol. VL - 53 IS - 12 N2 - The plant hormone jasmonic acid (JA) has a crucial role in both host immunity and development in plants. Here, we report the importance of JA signaling in the defense system of rice. Exogenous application of JA conferred resistance to bacterial blight caused by Xanthomonas oryzae pv. oryzae (Xoo) in rice. Expression of OsJAZ8, a rice jasmonate ZIM-domain protein, was highly up-regulated by JA. OsJAZ8 interacted with a putative OsCOI1, which is a component of the SCF(COI1) E3 ubiquitin ligase complex, in a coronatine-dependent manner. OsJAZ8 also formed heterodimers with other OsJAZ proteins but did not form homodimer. JA treatment caused OsJAZ8 degradation and this degradation was dependent on the 26S proteasome pathway. Furthermore, the JA-dependent OsJAZ8 degradation was mediated by the Jas domain. Transgenic rice plants overexpressing OsJAZ8ΔC, which lacks the Jas domain, exhibited a JA-insensitive phenotype. A large-scale analysis using a rice DNA microarray revealed that overexpression of OsJAZ8ΔC altered the expression of JA-responsive genes, including defense-related genes, in rice. Furthermore, OsJAZ8ΔC negatively regulated the JA-induced resistance to Xoo in rice. On the basis of these data, we conclude that JA plays an important role in resistance to Xoo, and OsJAZ8 acts as a repressor of JA signaling in rice. SN - 1471-9053 UR - https://www.unboundmedicine.com/medline/citation/23104764/Involvement_of_OsJAZ8_in_jasmonate_induced_resistance_to_bacterial_blight_in_rice_ L2 - https://academic.oup.com/pcp/article-lookup/doi/10.1093/pcp/pcs145 DB - PRIME DP - Unbound Medicine ER -