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The NAC transcription factors SNAP1/2/3/4 are central regulators mediating high nitrogen responses in mature nodules of soybean

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  • Xin Wang

    (Guangzhou University)

  • Zhimin Qiu

    (Fujian Agriculture and Forestry University
    Fujian Agriculture and Forestry University)

  • Wenjun Zhu

    (Fujian Agriculture and Forestry University)

  • Nan Wang

    (Inner Mongolia University)

  • Mengyan Bai

    (Fujian Agriculture and Forestry University
    Fujian Agriculture and Forestry University)

  • Huaqin Kuang

    (Guangzhou University)

  • Chenlin Cai

    (Fujian Agriculture and Forestry University)

  • Xiangbin Zhong

    (Fujian Agriculture and Forestry University)

  • Fanjiang Kong

    (Guangzhou University)

  • Peitao Lü

    (Fujian Agriculture and Forestry University
    Fujian Agriculture and Forestry University)

  • Yuefeng Guan

    (Guangzhou University
    Fujian Agriculture and Forestry University)

Abstract

Legumes can utilize atmospheric nitrogen via symbiotic nitrogen fixation, but this process is inhibited by high soil inorganic nitrogen. So far, how high nitrogen inhibits N2 fixation in mature nodules is still poorly understood. Here we construct a co-expression network in soybean nodule and find that a dynamic and reversible transcriptional network underlies the high N inhibition of N2 fixation. Intriguingly, several NAC transcription factors (TFs), designated as Soybean Nitrogen Associated NAPs (SNAPs), are amongst the most connected hub TFs. The nodules of snap1/2/3/4 quadruple mutants show less sensitivity to the high nitrogen inhibition of nitrogenase activity and acceleration of senescence. Integrative analysis shows that these SNAP TFs largely influence the high nitrogen transcriptional response through direct regulation of a subnetwork of senescence-associated genes and transcriptional regulators. We propose that the SNAP-mediated transcriptional network may trigger nodule senescence in response to high nitrogen.

Suggested Citation

  • Xin Wang & Zhimin Qiu & Wenjun Zhu & Nan Wang & Mengyan Bai & Huaqin Kuang & Chenlin Cai & Xiangbin Zhong & Fanjiang Kong & Peitao Lü & Yuefeng Guan, 2023. "The NAC transcription factors SNAP1/2/3/4 are central regulators mediating high nitrogen responses in mature nodules of soybean," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40392-w
    DOI: 10.1038/s41467-023-40392-w
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    References listed on IDEAS

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    1. Kun-hsiang Liu & Yajie Niu & Mineko Konishi & Yue Wu & Hao Du & Hoo Sun Chung & Lei Li & Marie Boudsocq & Matthew McCormack & Shugo Maekawa & Tetsuya Ishida & Chao Zhang & Kevan Shokat & Shuichi Yanag, 2017. "Discovery of nitrate–CPK–NLP signalling in central nutrient–growth networks," Nature, Nature, vol. 545(7654), pages 311-316, May.
    2. 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.
    3. Hanna Nishida & Sachiko Tanaka & Yoshihiro Handa & Momoyo Ito & Yuki Sakamoto & Sachihiro Matsunaga & Shigeyuki Betsuyaku & Kenji Miura & Takashi Soyano & Masayoshi Kawaguchi & Takuya Suzaki, 2018. "A NIN-LIKE PROTEIN mediates nitrate-induced control of root nodule symbiosis in Lotus japonicus," Nature Communications, Nature, vol. 9(1), pages 1-14, December.
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