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Role of salicylic acid glucosyltransferase in balancing growth and defence for optimum plant fitness.
Kobayashi, Yudai; Fukuzawa, Noriho; Hyodo, Ayaka; Kim, Hangil; Mashiyama, Shota; Ogihara, Tsuyoshi; Yoshioka, Hirofumi; Matsuura, Hideyuki; Masuta, Chikara; Matsumura, Takeshi; Takeshita, Minoru.
Afiliación
  • Kobayashi Y; Laboratory of Plant Pathology, Faculty of Agriculture, Department of Agricultural and Environmental Sciences, University of Miyazaki, Japan.
  • Fukuzawa N; Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan.
  • Hyodo A; Laboratory of Plant Pathology, Graduate School of Agriculture, Kyushu University, Fukuoka, Japan.
  • Kim H; Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
  • Mashiyama S; Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
  • Ogihara T; Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
  • Yoshioka H; Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan.
  • Matsuura H; Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
  • Masuta C; Graduate School of Agriculture, Hokkaido University, Sapporo, Japan.
  • Matsumura T; Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, Japan.
  • Takeshita M; Laboratory of Plant Pathology, Faculty of Agriculture, Department of Agricultural and Environmental Sciences, University of Miyazaki, Japan.
Mol Plant Pathol ; 21(3): 429-442, 2020 03.
Article en En | MEDLINE | ID: mdl-31965700
Salicylic acid (SA), an essential secondary messenger for plant defence responses, plays a role in maintaining a balance (trade-off) between plant growth and resistance induction, but the detailed mechanism has not been explored. Because the SA mimic benzothiadiazole (BTH) is a more stable inducer of plant defence than SA after exogenous application, we analysed expression profiles of defence genes after BTH treatment to better understand SA-mediated immune induction. Transcript levels of the salicylic acid glucosyltransferase (SAGT) gene were significantly lower in BTH-treated Nicotiana tabacum (Nt) plants than in SA-treated Nt control plants, suggesting that SAGT may play an important role in SA-related host defence responses. Treatment with BTH followed by SA suppressed SAGT transcription, indicating that the inhibitory effect of BTH is not reversible. In addition, in BTH-treated Nt and Nicotiana benthamiana (Nb) plants, an early high accumulation of SA and SA 2-O-ß-d-glucoside was only transient compared to the control. This observation agreed well with the finding that SAGT-overexpressing (OE) Nb lines contained less SA and jasmonic acid (JA) than in the Nb plants. When inoculated with a virus, the OE Nb plants showed more severe symptoms and accumulated higher levels of virus, while resistance increased in SAGT-silenced (IR) Nb plants. In addition, the IR plants restricted bacterial spread to the inoculated leaves. After the BTH treatment, OE Nb plants were slightly larger than the Nb plants. These results together indicate that SAGT has a pivotal role in the balance between plant growth and SA/JA-mediated defence for optimum plant fitness.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nicotiana / Ácido Salicílico / Glucosiltransferasas Idioma: En Revista: Mol Plant Pathol Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Nicotiana / Ácido Salicílico / Glucosiltransferasas Idioma: En Revista: Mol Plant Pathol Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Reino Unido