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A plant regulator controlling development of symbiotic root nodules

Author

Listed:
  • Leif Schauser
  • Andreas Roussis
  • Jiri Stiller

    (Laboratory of Gene Expression, University of Aarhus
    University of Tennessee)

  • Jens Stougaard

    (Laboratory of Gene Expression, University of Aarhus)

Abstract

Symbiotic nitrogen-fixing root nodules on legumes are founded by root cortical cells that de-differentiate and restart cell division to establish nodule primordia. Bacterial microsymbionts invade these primordia through infection threads laid down by the plant and, after endocytosis, membrane-enclosed bacteroids occupy cells in the nitrogen-fixing tissue of functional nodules. The bacteria excrete lipochitin oligosaccharides1,2, triggering a developmental process that is controlled by the plant and can be suppressed. Nodule inception initially relies on cell competence in a narrow infection zone located just behind the growing root tip. Older nodules then regulate the number of nodules on a root system by suppressing the development of nodule primordia3. To identify the regulatory components that act early in nodule induction, we characterized a transposon-tagged Lotus japonicus mutant, nin (for nodule inception), arrested at the stage of bacterial recognition. We show that nin is required for the formation of infection threads and the initiation of primordia. NIN protein has regional similarity to transcription factors, and the predicted DNA-binding/dimerization domain identifies and typifies a consensus motif conserved in plant proteins with a function in nitrogen-controlled development.

Suggested Citation

  • Leif Schauser & Andreas Roussis & Jiri Stiller & Jens Stougaard, 1999. "A plant regulator controlling development of symbiotic root nodules," Nature, Nature, vol. 402(6758), pages 191-195, November.
  • Handle: RePEc:nat:nature:v:402:y:1999:i:6758:d:10.1038_46058
    DOI: 10.1038/46058
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    Cited by:

    1. Jieshun Lin & Yuda Purwana Roswanjaya & Wouter Kohlen & Jens Stougaard & Dugald Reid, 2021. "Nitrate restricts nodule organogenesis through inhibition of cytokinin biosynthesis in Lotus japonicus," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    2. Momoyo Ito & Yuri Tajima & Mari Ogawa-Ohnishi & Hanna Nishida & Shohei Nosaki & Momona Noda & Naoyuki Sotta & Kensuke Kawade & Takehiro Kamiya & Toru Fujiwara & Yoshikatsu Matsubayashi & Takuya Suzaki, 2024. "IMA peptides regulate root nodulation and nitrogen homeostasis by providing iron according to internal nitrogen status," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    3. Jiahuan Chen & Zhijuan Wang & Lixiang Wang & Yangyang Hu & Qiqi Yan & Jingjing Lu & Ziyin Ren & Yujie Hong & Hongtao Ji & Hui Wang & Xinying Wu & Yanru Lin & Chao Su & Thomas Ott & Xia Li, 2022. "The B-type response regulator GmRR11d mediates systemic inhibition of symbiotic nodulation," Nature Communications, Nature, vol. 13(1), pages 1-17, December.
    4. Keyi Ye & Fengjiao Bu & Liyuan Zhong & Zhaonian Dong & Zhaoxu Ma & Zhanpeng Tang & Yu Zhang & Xueyong Yang & Xun Xu & Ertao Wang & William J. Lucas & Sanwen Huang & Huan Liu & Jianshu Zheng, 2024. "Mapping the molecular landscape of Lotus japonicus nodule organogenesis through spatiotemporal transcriptomics," Nature Communications, Nature, vol. 15(1), pages 1-13, December.
    5. Manuel Frank & Lavinia Ioana Fechete & Francesca Tedeschi & Marcin Nadzieja & Malita Malou Malekzadeh Nørgaard & Jesus Montiel & Kasper Røjkjær Andersen & Mikkel H. Schierup & Dugald Reid & Stig Ugger, 2023. "Single-cell analysis identifies genes facilitating rhizobium infection in Lotus japonicus," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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