ZINC FINGER PROTEIN2 suppresses funiculus lignification to ensure seed loading efficiency in Arabidopsis

Pui Man Low, Que Kong, Leonard Blaschek, Zhiming Ma, Peng Ken Lim, Yuzhou Yang, Trisha Quek, Cuithbert J.R. Lim, Sanjay K. Singh, Christoph Crocoll, Ellen Engquist, Jakob S. Thorsen, Sitakanta Pattanaik, Wan Ting Tee, Marek Mutwil, Yansong Miao, Ling Yuan, Deyang Xu, Staffan Persson, Wei Ma

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The plant funiculus anchors the developing seed to the placenta within the inner dorsal pod strands of the silique wall and directly transports nutrients to the seeds. The lignified vasculature critically supports nutrient transport through the funiculus. However, molecular mechanisms underlying lignified secondary cell wall (SCW) biosynthesis in the funiculus remain elusive. Here, we show that the transcription factor ZINC FINGER PROTEIN2 (ZFP2) represses SCW formation in the cortex cells that surround the vasculature. This function is essential for efficient nutrient loading into the seeds. Notably, ZFP2 directly acts on the SCW transcription factor NAC SECONDARY WALL THICKENING PROMOTING FACTOR1 (NST1) to repress cortex cell lignification, providing a mechanism of how SCW biosynthesis is restricted to the vasculature of the funiculus to ensure proper seed loading in Arabidopsis.

Original languageEnglish
Pages (from-to)1719-1729.e6
JournalDevelopmental Cell
Volume60
Issue number12
DOIs
StatePublished - Jun 23 2025

Bibliographical note

Publisher Copyright:
© 2025 Elsevier Inc.

Funding

We thank Dr. Hao Yu (National University of Singapore) for the seeds of N. benthamiana expressing H2B-RFP, Dr. Lisha Shen (Temasek Life Sciences Laboratory), and Dr. Chengxiang Li (Sichuan University) for suggestions on the ChIP-qPCR assay. This work was supported by the Ministry of Education (MOE) of Singapore Tier 2 (grant nos. MOE-T2EP30123-0001 and MOE-T2EP30220-0011 and to W.M.), MOE of Singapore Tier 1 (grant no. RG32/23 to W.M.), Villum Investigator (grant no. 25915 to S.P.), DNRF Chair (grant no. DNRF155 to S.P.), Novo Nordisk Laureate (grant no. NNF19OC0056076 to S.P.), Novo Nordisk Emerging Investigator (grant no. NNF20OC0060564 to S.P.), Novo Nordisk Data Science (grant no. NNF0068884 to S.P.), Independent Research Fund Denmark (grant no. 2102-00258B to D.X.), Innovation Fund Denmark (grant no. 3141-00040B to D.X.), Novo Nordisk Foundation (grant no. NNF23OC0085289 to D.X.), MOE of Singapore Tier 2 (grant no. MOE-T2EP30122-0021 to Y.M.), Singapore National Research Foundation Investigatorship (grant no. NRF-NRFI08-2022-0012 to Y.M.), and MOE of Singapore Tier 2 (grant no. MOE-T2EP30122-0017 to M.M.). L.B. is supported by the EMBO postdoctoral fellowship ALTF 37-2022 .

FundersFunder number
Ministry of Education China
Michigan State University
National University Hospital, Singapore
Sichuan University, Chengdu, Sichuan
MOE of SingaporeRG32/23, 25915
Novo Nordisk LaureateNNF19OC0056076
Danmarks GrundforskningsfondDNRF155
Danmarks Grundforskningsfond
Novo Nordisk FondenNNF23OC0085289, MOE-T2EP30122-0021
Novo Nordisk Fonden
Ministry of Education - SingaporeMOE-T2EP30123-0001, MOE-T2EP30220-0011
Ministry of Education - Singapore
Independent Research Fund Denmark2102-00258B
Innovationsfonden3141-00040B
Innovationsfonden
Novo Nordisk A/SNNF20OC0060564
Novo Nordisk A/S
European Molecular Biology OrganizationALTF 37-2022
European Molecular Biology Organization
National Research Foundation SingaporeNRF-NRFI08-2022-0012, MOE-T2EP30122-0017
National Research Foundation Singapore
Novo Nordisk Data ScienceNNF0068884

    Keywords

    • Arabidopsis
    • ZINC FINGER PROTEIN2
    • funiculus
    • secondary cell wall biosynthesis
    • transcription factor
    • transcriptional repression

    ASJC Scopus subject areas

    • Molecular Biology
    • General Biochemistry, Genetics and Molecular Biology
    • Developmental Biology
    • Cell Biology

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