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Arabidopsis NahG Plants as a Suitable and Efficient System for Transient Expression using Agrobacte#um tumefaciens

Molecular Plant 2017年第2期10卷 353-356页

作者： Tábata Rosas-Díaz pepe cana-quijada Vitor Amorim-Silva Miguel A. Botella Rosa Lozano-Durán Eduardo R. Bejarano Departamento de Biología Celular Genética y Fisiología Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora” Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC) Universidad de Málaga Campus Teatinos 29071 Málaga Spain Shanghai Center for Plant Stress Biology (PSC) Shanghai Institutes of Biological Sciences Chinese Academy of Sciences Shanghai 201602 China Departamento de Biología Molecular y Bioquimica Instituto de Hortofruticultura Subtropical y Mediterránea “La Mayora” Universidad de Málaga-Consejo Superior de Investigaciones Científicas (IHSM-UMA-CSIC) Universidad de Málaga Campus Teatinos 29071 Málaga Spain

Dear Editor Research in molecular plant biology has largely benefitted from technologies allowing exogenous gene expression. While the generation of stable transgenic lines is required in some cases, transient transfo... 详细信息

关键词： Suitable Transient tumefaciens

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The transcriptional regulator JAZ8 interacts with the C2 protein from geminiviruses and limits the geminiviral infection in Arabidopsis

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Journal of Integrative Plant Biology 2023年第7期65卷 1826-1840页

作者： Tabata Rosas-Diaz pepe cana-quijada Mengshi Wu Du Hui Gemma Fernandez-Barbero Alberto PMacho Roberto Solano Araceli GCastillo Xiao-Wei Wang Rosa Lozano-Duran Eduardo R.Bejarano Departamento de Biología Celular Genética y FisiologíaFacultad de CienciasInstituto de Hortofruticultura Subtropical y Mediterránea“La Mayora”(IHSM‐UMA‐CSIC)Universidad de MálagaMálagaSpain Shanghai Center for Plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 201602China Institute of Insect Sciences Zhejiang UniversityHangzhou 310058China Departamento de Genética Molecular de Plantas Centro Nacional de Biotecnología‐Consejo Superior de Investigaciones CientíficasMadrid 28049Spain Department of Plant Biochemistry Centre for Plant Molecular BiologyEberhard Karls UniversityTübingen D‐72076Germany

Jasmonates(JAs) are phytohormones that finely regulate critical biological processes, including plant development and defense. JASMONATE ZIM-DOMAIN(JAZ) proteins are crucial transcriptional regulators that keep JA-responsive genes in a repressed state. In the presence of JA-Ile, JAZ repressors are ubiquitinated and targeted for degradation by the ubiquitin/proteasome system,allowing the activation of downstream transcription factors and, consequently, the induction of JA-responsive genes. A growing body of evidence has shown that JA signaling is crucial in defending against plant viruses and their insect vectors. Here, we describe the interaction of C2proteins from two tomato-infecting geminiviruses from the genus Begomovirus, tomato yellow leaf curl virus(TYLCV) and tomato yellow curl Sardinia virus(TYLCSaV), with the transcriptional repressor JAZ8 from Arabidopsis thaliana and its closest orthologue in tomato, SlJAZ9. Both JAZ and C2proteins colocalize in the nucleus, forming discrete nuclear speckles. Overexpression of JAZ8did not lead to altered responses to TYLCV infection in Arabidopsis;however, knock-down of JAZ8 favors geminiviral infection. Low levels of JAZ8 likely affect the viral infection specifically,since JAZ8-silenced plants neither display obvious developmental phenotypes nor present differences in their interaction with the viral insect vector. In summary, our results show that the geminivirus-encoded C2 interacts with JAZ8 in the nucleus, and suggest that this plant protein exerts an anti-geminiviral effect.

关键词： C2 protein geminivirus jasmonates JAZ8 transcriptional repressor TYLCV

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