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Arabidopsis TCP4 transcription factor inhibits high temperature-induced homeotic conversion of ovules

Author

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  • Jingqiu Lan

    (Peking University
    CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences)

  • Ning Wang

    (Peking University)

  • Yutao Wang

    (Peking University)

  • Yidan Jiang

    (Peking University)

  • Hao Yu

    (Peking University)

  • Xiaofeng Cao

    (CAS Center for Excellence in Molecular Plant Sciences, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences)

  • Genji Qin

    (Peking University)

Abstract

Abnormal high temperature (HT) caused by global warming threatens plant survival and food security, but the effects of HT on plant organ identity are elusive. Here, we show that Class II TEOSINTE BRANCHED 1/CYCLOIDEA/ PCF (TCP) transcription factors redundantly protect ovule identity under HT. The duodecuple tcp2/3/4/5/10/13/17/24/1/12/18/16 (tcpDUO) mutant displays HT-induced ovule conversion into carpelloid structures. Expression of TCP4 in tcpDUO complements the ovule identity conversion. TCP4 interacts with AGAMOUS (AG), SEPALLATA3 (SEP3), and the homeodomain transcription factor BELL1 (BEL1) to strengthen the association of BEL1 with AG-SEP3. The tcpDUO mutant synergistically interacts with bel1 and the ovule identity gene seedstick (STK) mutant stk in tcpDUO bel1 and tcpDUO stk. Our findings reveal the critical roles of Class II TCPs in maintaining ovule identity under HT and shed light on the molecular mechanisms by which ovule identity is determined by the integration of internal factors and environmental temperature.

Suggested Citation

  • Jingqiu Lan & Ning Wang & Yutao Wang & Yidan Jiang & Hao Yu & Xiaofeng Cao & Genji Qin, 2023. "Arabidopsis TCP4 transcription factor inhibits high temperature-induced homeotic conversion of ovules," Nature Communications, Nature, vol. 14(1), pages 1-19, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-41416-1
    DOI: 10.1038/s41467-023-41416-1
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    References listed on IDEAS

    as
    1. Sanghwa Lee & Wenli Wang & Enamul Huq, 2021. "Spatial regulation of thermomorphogenesis by HY5 and PIF4 in Arabidopsis," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    2. Anusak Pinyopich & Gary S. Ditta & Beth Savidge & Sarah J. Liljegren & Elvira Baumann & Ellen Wisman & Martin F. Yanofsky, 2003. "Assessing the redundancy of MADS-box genes during carpel and ovule development," Nature, Nature, vol. 424(6944), pages 85-88, July.
    3. John Doebley & Adrian Stec & Lauren Hubbard, 1997. "The evolution of apical dominance in maize," Nature, Nature, vol. 386(6624), pages 485-488, April.
    4. Sarah J. Liljegren & Gary S. Ditta & Yuval Eshed & Beth Savidge & John L. Bowman & Martin F. Yanofsky, 2000. "SHATTERPROOF MADS-box genes control seed dispersal in Arabidopsis," Nature, Nature, vol. 404(6779), pages 766-770, April.
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