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Ethylene negatively mediates self-incompatibility response in Brassica rapa.
Su, Shiqi; Dai, Huamin; Wang, Xiaoyun; Wang, Chao; Zeng, Weiqing; Huang, Jiabao; Duan, Qiaohong.
Afiliación
  • Su S; State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
  • Dai H; State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
  • Wang X; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
  • Wang C; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China.
  • Zeng W; Current address: Cibus US LLC, 6455 Nancy Ridge Dr, San Diego, 92121, USA.
  • Huang J; State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China. Electronic address: jbhuang201
  • Duan Q; State Key Laboratory of Crop Biology, College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China; College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, Shandong, China. Electronic address: duanqh@sda
Biochem Biophys Res Commun ; 525(3): 600-606, 2020 05 07.
Article en En | MEDLINE | ID: mdl-32115144
ABSTRACT
Self-incompatibility (SI) is a genetic mechanism most flowering plants adopted to reject self-pollen thus avoid inbreeding. In the Brassicaceae, self-pollen recognition triggers downstream signaling pathways to reject self-pollen. However, the downstream signaling pathways are not very clear. Here we show that ethylene negatively mediates self-incompatibility response of Chinese cabbage (Brassica rapa L. ssp. Pekinensis) via PCD in papilla cells. We found that ethylene signaling genes were upregulated after cross-pollination. Treating stigmas with ethylene, or suppressing the expression of a negative regulator of ethylene signaling, CONSTITUTIVE TRIPLE RESPONSE 1 (CTR1), caused PCD in papilla cells and broke down the self-incompatibility. On the other hand, treating stigmas with ethylene inhibitors, or suppressing the expression of ethylene-responsive factors (ERFs), inhibited PCD in papilla cells and the compatible pollination. Our study identified an additional signaling pathway mediating self-incompatibility responses in the Brassicaceae and also developed a new method in overcoming self-incompatibility to improve the efficiency of inbred line propagation in agriculture practice.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Brassica rapa / Etilenos / Autoincompatibilidad en las Plantas con Flores Tipo de estudio: Prognostic_studies Idioma: En Revista: Biochem Biophys Res Commun Año: 2020 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Brassica rapa / Etilenos / Autoincompatibilidad en las Plantas con Flores Tipo de estudio: Prognostic_studies Idioma: En Revista: Biochem Biophys Res Commun Año: 2020 Tipo del documento: Article País de afiliación: China