Cargando…

Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus

Brassica napus (rapeseed) is the second most important oilseed crop worldwide. Global rise in average ambient temperature and extreme weather severely impact rapeseed seed yield. However, fewer research explained the phenotype changes caused by moderate-to-high temperatures in rapeseed. To investiga...

Descripción completa

Detalles Bibliográficos
Autores principales: Mácová, Kateřina, Prabhullachandran, Unnikannan, Štefková, Marie, Spyroglou, Ioannis, Pěnčík, Aleš, Endlová, Lenka, Novák, Ondřej, Robert, Hélène S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9075611/
https://www.ncbi.nlm.nih.gov/pubmed/35528932
http://dx.doi.org/10.3389/fpls.2022.844292
_version_ 1784701725256450048
author Mácová, Kateřina
Prabhullachandran, Unnikannan
Štefková, Marie
Spyroglou, Ioannis
Pěnčík, Aleš
Endlová, Lenka
Novák, Ondřej
Robert, Hélène S.
author_facet Mácová, Kateřina
Prabhullachandran, Unnikannan
Štefková, Marie
Spyroglou, Ioannis
Pěnčík, Aleš
Endlová, Lenka
Novák, Ondřej
Robert, Hélène S.
author_sort Mácová, Kateřina
collection PubMed
description Brassica napus (rapeseed) is the second most important oilseed crop worldwide. Global rise in average ambient temperature and extreme weather severely impact rapeseed seed yield. However, fewer research explained the phenotype changes caused by moderate-to-high temperatures in rapeseed. To investigate these events, we determined the long-term response of three spring cultivars to different temperature regimes (21/18°C, 28/18°C, and 34/18°C) mimicking natural temperature variations. The analysis focused on the plant appearance, seed yield, quality and viability, and embryo development. Our microscopic observations suggest that embryonic development is accelerated and defective in high temperatures. Reduced viable seed yield at warm ambient temperature is due to a reduced fertilization rate, increased abortion rate, defective embryonic development, and pre-harvest sprouting. Reduced auxin levels in young seeds and low ABA and auxin levels in mature seeds may cause embryo pattern defects and reduced seed dormancy, respectively. Glucosinolates and oil composition measurements suggest reduced seed quality. These identified cues help understand seed thermomorphogenesis and pave the way to developing thermoresilient rapeseed.
format Online
Article
Text
id pubmed-9075611
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-90756112022-05-07 Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus Mácová, Kateřina Prabhullachandran, Unnikannan Štefková, Marie Spyroglou, Ioannis Pěnčík, Aleš Endlová, Lenka Novák, Ondřej Robert, Hélène S. Front Plant Sci Plant Science Brassica napus (rapeseed) is the second most important oilseed crop worldwide. Global rise in average ambient temperature and extreme weather severely impact rapeseed seed yield. However, fewer research explained the phenotype changes caused by moderate-to-high temperatures in rapeseed. To investigate these events, we determined the long-term response of three spring cultivars to different temperature regimes (21/18°C, 28/18°C, and 34/18°C) mimicking natural temperature variations. The analysis focused on the plant appearance, seed yield, quality and viability, and embryo development. Our microscopic observations suggest that embryonic development is accelerated and defective in high temperatures. Reduced viable seed yield at warm ambient temperature is due to a reduced fertilization rate, increased abortion rate, defective embryonic development, and pre-harvest sprouting. Reduced auxin levels in young seeds and low ABA and auxin levels in mature seeds may cause embryo pattern defects and reduced seed dormancy, respectively. Glucosinolates and oil composition measurements suggest reduced seed quality. These identified cues help understand seed thermomorphogenesis and pave the way to developing thermoresilient rapeseed. Frontiers Media S.A. 2022-04-22 /pmc/articles/PMC9075611/ /pubmed/35528932 http://dx.doi.org/10.3389/fpls.2022.844292 Text en Copyright © 2022 Mácová, Prabhullachandran, Štefková, Spyroglou, Pěnčík, Endlová, Novák and Robert. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Mácová, Kateřina
Prabhullachandran, Unnikannan
Štefková, Marie
Spyroglou, Ioannis
Pěnčík, Aleš
Endlová, Lenka
Novák, Ondřej
Robert, Hélène S.
Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus
title Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus
title_full Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus
title_fullStr Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus
title_full_unstemmed Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus
title_short Long-Term High-Temperature Stress Impacts on Embryo and Seed Development in Brassica napus
title_sort long-term high-temperature stress impacts on embryo and seed development in brassica napus
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9075611/
https://www.ncbi.nlm.nih.gov/pubmed/35528932
http://dx.doi.org/10.3389/fpls.2022.844292
work_keys_str_mv AT macovakaterina longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus
AT prabhullachandranunnikannan longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus
AT stefkovamarie longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus
AT spyroglouioannis longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus
AT pencikales longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus
AT endlovalenka longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus
AT novakondrej longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus
AT roberthelenes longtermhightemperaturestressimpactsonembryoandseeddevelopmentinbrassicanapus