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A Novel NAC-Type Transcription Factor, NAC87, from Oilseed Rape Modulates Reactive Oxygen Species Accumulation and Cell Death.
Yan, Jingli; Tong, Tiantian; Li, Xin; Chen, Qinqin; Dai, Moyu; Niu, Fangfang; Yang, Mingfeng; Deyholos, Michael K; Yang, Bo; Jiang, Yuan-Qing.
Afiliación
  • Yan J; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • Tong T; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • Li X; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • Chen Q; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • Dai M; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • Niu F; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • Yang M; College of Biological Sciences and Bioengineering, Beijing University of Agriculture, Beijing 102206, China.
  • Deyholos MK; Department of Biology, University of British Columbia, Okanagan Campus, Kelowna, BC, V1V 1V7, Canada.
  • Yang B; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
  • Jiang YQ; State Key Laboratory of Crop Stress Biology for Arid Areas, College of Life Sciences, Northwest A & F University, Yangling, Shaanxi 712100, China.
Plant Cell Physiol ; 59(2): 290-303, 2018 Feb 01.
Article en En | MEDLINE | ID: mdl-29186531
Reactive oxygen species (ROS) are thought to play a dual role in plants by functioning as signaling molecules and toxic by-products of aerobic metabolism. The hypersensitive response (HR) is a typical feature of immune responses in plants and also a type of programmed cell death (PCD). How these two processes are regulated in oilseed rape (Brassica napus L.) at the transcriptional level remains largely unknown. In this study, we report that an oilseed rape (Brassica napus L.) NAM-ATAF-CUC (NAC)-type transcription factor NAC87 modulates ROS and cell death accompanied by typical changes at the morphological and cellular levels. The BnaNAC87 gene was induced by multiple stress and hormone treatments and was highly expressed in senescent leaves by quantitative reverse transcription-PCR (qRT-PCR). BnaNAC87 is located in nuclei and has transcriptional activation activity. Expression of BnaNAC87 promoted significant ROS production, cell death as well as death of protoplasts, as indicated by histological staining. In addition, putative downstream target genes of NAC87 were identified through both qRT-PCR and dual luciferase reporter assays. We found that genes implicated in ROS generation (RbohB), cell death (VPE1a, ZEN1), leaf senescence (WRKY6, ZAT12) and defense (PR2, PR5 and HIN1) were significantly induced. Through an electrophoretic mobility shift assay (EMSA), we confirmed that BnaNAC87 directly binds to the NACRS-containing promoter fragments of ZEN1, ZAT12, HIN1 and PR5 genes. From these results, we conclude that oilseed rape NAC87 is a novel NAC transcription factor that acts as a positive regulator of ROS metabolism and cell death.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Factores de Transcripción / Especies Reactivas de Oxígeno / Brassica napus Tipo de estudio: Prognostic_studies Idioma: En Revista: Plant Cell Physiol Asunto de la revista: BOTANICA Año: 2018 Tipo del documento: Article País de afiliación: China Pais de publicación: Japón
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Proteínas de Plantas / Factores de Transcripción / Especies Reactivas de Oxígeno / Brassica napus Tipo de estudio: Prognostic_studies Idioma: En Revista: Plant Cell Physiol Asunto de la revista: BOTANICA Año: 2018 Tipo del documento: Article País de afiliación: China Pais de publicación: Japón