The transcription factor MdBPC2 alters apple growth and promotes dwarfing by regulating auxin biosynthesis (Record no. 55060)

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control field MX-MdCICY
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20250625162459.0
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Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-20981
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Title The transcription factor MdBPC2 alters apple growth and promotes dwarfing by regulating auxin biosynthesis
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Volume/sequential designation The Plant Cell, 36(3), p.585-604, 2024
520 3# - SUMMARY, ETC.
Summary, etc. Auxin plays important roles throughout plant growth and development. However, the mechanisms of auxin regulation of plant structure are poorly understood. In this study, we identified a transcription factor (TF)of the BARLEY B RECOMBINANT/BASIC PENTACYSTEINE (BBR/BPC)family in apple (Malus × domestica), MdBPC2. It was highly expressed in dwarfing rootstocks, and it negatively regulated auxin biosynthesis. Overexpression of MdBPC2 in apple decreased plant height, altered leaf morphology, and inhibited root system development. These phenotypes were due to reduced auxin levels and were restored reversed after exogenous indole acetic acid (IAA)treatment. Silencing of MdBPC2 alone had no obvious phenotypic effect, while silencing both Class I and Class II BPCs in apple significantly increased auxin content in plants. Biochemical analysis demonstrated that MdBPC2 directly bound to the GAGA-rich element in the promoters of the auxin synthesis genes MdYUC2a and MdYUC6b, inhibiting their transcription and reducing auxin accumulation in MdBPC2 overexpression lines. Further studies established that MdBPC2 interacted with the polycomb group (PcG)protein LIKE HETEROCHROMATIN PROTEIN 1 (LHP1)to inhibit MdYUC2a and MdYUC6b expression via methylation of histone 3 lysine 27 (H3K27me3). Silencing MdLHP1 reversed the negative effect of MdBPC2 on auxin accumulation. Our results reveal a dwarfing mechanism in perennial woody plants involving control of auxin biosynthesis by a BPC transcription factor, suggesting its use for genetic improvement of apple rootstock.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Zhao, H.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Wan, S.
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Personal name Huang, Y.
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Personal name Li, X.
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Personal name Jiao, T.
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Personal name Zhang, Z.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Li, M.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1XbGNCPWPhA6xEooIx6AOJZIvlQ3wTmtW/view?usp=drivesdk">https://drive.google.com/file/d/1XbGNCPWPhA6xEooIx6AOJZIvlQ3wTmtW/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-20981 25.06.2025 25.06.2025 Documentos solicitados