BELL1-2 转录因子在豆科植物-根瘤菌共生发展中的作用

IF 3.9 3区 生物学 Q1 PLANT SCIENCES
A. V. Dolgikh, E. S. Kantsurova, A. M. Dymo, E. A. Dolgikh
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引用次数: 0

摘要

结核的发育过程受到植物激素(主要是赤霉素和细胞分裂素)的严格调控。在结核发育过程中,赤霉素和细胞分裂素在感染发育和器官形成过程中发挥着重要作用。然而,这些植物激素之间的相互作用尚不清楚。在我们的研究中,我们首先证明了 BELL1-2 转录因子能在结核发育过程中影响赤霉素和细胞分裂素的生物合成基因。研究还发现,BELL1-2 能调控 SHY2-like 基因,该基因专门参与控制分生组织的维持和器官的发生。pMtBELL1-2::GUS启动子的表达定位表明,该基因在成熟结核的初生区、感染区和固氮区都有表达。此外,我们还检测到,由于感染丝的生长发生了变化,BELL1-2 RNAi 的 M. truncatula 节点的感染区扩大了。综上所述,我们得出结论:BELL1-2 在控制豆科植物的感染和器官发生中发挥着重要作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The Role of the BELL1-2 Transcription Factor in the Development of Legume-rhizobial Symbiosis

The Role of the BELL1-2 Transcription Factor in the Development of Legume-rhizobial Symbiosis

Nodule development is a process that is tightly regulated by phytohormones, mainly gibberellins and cytokinins. During nodule development gibberellins and cytokinins play an important role in the infection development and organogenesis. However, the interaction between these phytohormones is not yet clear. In our research we first demonstrated that the BELL1-2 transcription factor can influence gibberellin and cytokinin biosynthesis genes during nodule development. It was also found that BELL1-2 can regulate SHY2-like gene which is specifically involved in the control of meristem maintenance and organogenesis. Localisation of the expression of the pMtBELL1-2::GUS promoter showed that the gene is expressed in the primordia, as well as in the infection zone and the nitrogen-fixing zone of mature nodules. Furthermore, we detected an increase in the infection zone in M. truncatula nodules with BELL1-2 RNAi due to the modified growth of the infection threads. In summary, we conclude that BELL1-2 plays an important role in the control of infection and organogenesis in legume plants.

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来源期刊
CiteScore
8.40
自引率
6.20%
发文量
312
审稿时长
1.8 months
期刊介绍: The Journal of Plant Growth Regulation is an international publication featuring original articles on all aspects of plant growth and development. We welcome manuscripts reporting question-based research on various aspects of plant growth and development using hormonal, physiological, environmental, genetic, biophysical, developmental and/or molecular approaches. The journal also publishes timely reviews on highly relevant areas and/or studies in plant growth and development, including interdisciplinary work with an emphasis on plant growth, plant hormones and plant pathology or abiotic stress. In addition, the journal features occasional thematic issues with special guest editors, as well as brief communications describing novel techniques and meeting reports. The journal is unlikely to accept manuscripts that are purely descriptive in nature or reports work with simple tissue culture without attempting to investigate the underlying mechanisms of plant growth regulation, those that focus exclusively on microbial communities, or deal with the (elicitation by plant hormones of) synthesis of secondary metabolites.
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