High ambient temperature impacts on flowering time in Brassica napus through both H2A.Z-dependent and independent mechanisms

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• dc.contributor.author Abelenda, José A.
• dc.contributor.author Trabanco, Noemí
• dc.contributor.author Olmo, Iván del
• dc.contributor.author Pozas, Jenifer
• dc.contributor.author Martín-Trillo, María del Mar
• dc.contributor.author Gómez Garrido, Jèssica
• dc.contributor.author Esteve-Codina, Anna
• dc.contributor.author Pernas, Mónica
• dc.contributor.author Jarillo, José A.
• dc.contributor.author Piñeiro, Manuel
• dc.date.accessioned 2023-03-09T07:22:14Z
• dc.date.available 2023-03-09T07:22:14Z
• dc.date.issued 2023
• dc.description.abstract Knowledge concerning the integration of genetic pathways mediating the responses to environmental cues controlling flowering initiation in crops is scarce. Here, we reveal the diversity in oilseed rape (OSR) flowering response to high ambient temperature. Using a set of different spring OSR varieties, we found a consistent flowering delay at elevated temperatures. Remarkably, one of the varieties assayed exhibited the opposite behaviour. Several FT-like paralogs are plausible candidates to be part of the florigen in OSR. We revealed that BnaFTA2 plays a major role in temperature-dependent flowering initiation. Analysis of the H2A.Z histone variant occupancy at this locus in different Brassica napus varieties produced contrasting results, suggesting the involvement of additional molecular mechanisms in BnaFTA2 repression at high ambient temperature. Moreover, BnARP6 RNAi plants showed little accumulation of H2A.Z at high temperature while maintaining temperature sensitivity and delayed flowering. Furthermore, we found that H3K4me3 present in BnaFTA2 under inductive flowering conditions is reduced at high temperature, suggesting a role for this hallmark of transcriptionally active chromatin in the OSR flowering response to warming. Our work emphasises the plasticity of flowering responses in B. napus and offers venues to optimise this process in crop species grown under suboptimal environmental conditions.
• dc.description.sponsorship This work was funded by the Spanish Ministry of Economy, Industry, and Competitiveness (grant Nos. BIO2016-77559-R and PID2019-104899GB-I00) to José A. Jarillo and Manuel Piñeiro from MCIN/AEI/10.13039/501100011033 and FEDER, and work by a grant from FP7-FACCE-JPI-ERA-NET + CLIMATE SMART AGRICULTURE (ERA46-SYBRACLYM) to Mónica Pernas. Anna Esteve-Codina is funded by ISCIII/MINECO (PT17/0009/0019) and co-funded by FEDER. This work has also been financially supported by the ‘Severo Ochoa (SO) Programme for Centres of Excellence in R&D’ from the Agencia Estatal de Investigación (AEI) of Spain (grants SEV-2016-0672 (2017–2021). José A. Abelenda is a recipient of a Comunidad de Madrid Atracción de Talento Investigador programme (grant 2018T1/BIO11380). Noemí Trabanco was a recipient of a Comunidad de Madrid Atracción de Talento Investigador programme (grant 2017-T2/BIO-5644).
• dc.format.mimetype application/pdf
• dc.identifier.citation Abelenda JA, Trabanco N, Del Olmo I, Pozas J, Martín-Trillo MDM, Gómez-Garrido J, Esteve-Codina A, Pernas M, Jarillo JA, Piñeiro M. High ambient temperature impacts on flowering time in Brassica napus through both H2A.Z-dependent and independent mechanisms. Plant Cell Environ. 2023 May;46(5):1427-41. DOI: 10.1111/pce.14526
• dc.identifier.doi http://dx.doi.org/10.1111/pce.14526
• dc.identifier.issn 0140-7791
• dc.identifier.uri http://hdl.handle.net/10230/56116
• dc.language.iso eng
• dc.publisher Wiley
• dc.relation.ispartof Plant Cell Environ. 2023 May;46(5):1427-41
• dc.relation.projectID info:eu-repo/grantAgreement/ES/1PE/BIO2016-77559-R
• dc.relation.projectID info:eu-repo/grantAgreement/ES/2PE/PID2019-104899GB-I00
• dc.rights © 2023 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.rights.uri http://creativecommons.org/licenses/by/4.0/
• dc.subject.keyword BnaARP6
• dc.subject.keyword BnaFTs
• dc.subject.keyword Brassica napus flowering
• dc.subject.keyword H3K4me3
• dc.subject.keyword Histone variant
• dc.subject.keyword Warm temperature
• dc.title High ambient temperature impacts on flowering time in Brassica napus through both H2A.Z-dependent and independent mechanisms
• dc.type info:eu-repo/semantics/article
• dc.type.version info:eu-repo/semantics/publishedVersion