Photoperiod-1 regulates the wheat inflorescence transcriptome to influence spikelet architecture and flowering time

Date

2024

Authors

Gauley, A.
Pasquariello, M.
Yoshikawa, G.V.
Alabdullah, A.K.
Hayta, S.
Smedley, M.A.
Dixon, L.E.
Boden, S.A.

Editors

Advisors

Journal Title

Journal ISSN

Volume Title

Type:

Journal article

Citation

Current Biology, 2024; 34(11):2330-2343

Statement of Responsibility

Adam Gauley, Marianna Pasquariello, Guilherme V. Yoshikawa, Abdul Kader Alabdullah, Sadiye Hayta, Mark A. Smedley, Laura E. Dixon, and Scott A. Boden

Conference Name

Abstract

Photoperiod insensitivity has been selected by breeders to help adapt crops to diverse environments and farming practices. In wheat, insensitive alleles of Photoperiod-1 (Ppd-1) relieve the requirement of long daylengths to flower by promoting expression of floral promoting genes early in the season; however, these alleles also limit yield by reducing the number and fertility of grain-producing florets through processes that are poorly understood. Here, we performed transcriptome analysis of the developing inflorescence using near-isogenic lines that contain either photoperiod-insensitive or null alleles of Ppd-1, during stages when spikelet number is determined and floret development initiates. We report that Ppd-1 influences the stage-specific expression of genes with roles in auxin signaling, meristem identity, and protein turnover, and analysis of differentially expressed transcripts identified bZIP and ALOG transcription factors, namely PDB1 and ALOG1, which regulate flowering time and spikelet architecture. These findings enhance our understanding of genes that regulate inflorescence development and introduce new targets for improving yield potential.

School/Discipline

Dissertation Note

Provenance

Description

Also includes Star Methods, pages e1-e4

Access Status

Rights

© 2024 The Authors. Published by Elsevier Inc. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

License

Call number

Persistent link to this record