Overexpression of acdS in petunia reduces ethylene production and improves tolerance to heat stress.
Ethylene production
floricultural industry
gene expression
heat stress
plant growth
reactive oxygen species
Journal
Plant biology (Stuttgart, Germany)
ISSN: 1438-8677
Titre abrégé: Plant Biol (Stuttg)
Pays: England
ID NLM: 101148926
Informations de publication
Date de publication:
10 Jun 2024
10 Jun 2024
Historique:
received:
29
01
2024
accepted:
16
05
2024
medline:
11
6
2024
pubmed:
11
6
2024
entrez:
11
6
2024
Statut:
aheadofprint
Résumé
Petunia hybrida, widely grown as a bedding plant, has reduced growth and flower quality at temperatures above 30 °C (heat stress), primarily due to heat stress-induced ethylene (ET) production. The gene acdS encodes the 1-aminocyclopropane-1-carboxylate (ACC) deaminase (ACCD) enzyme, which is known for its role in reducing ET production by breaking down the ET precursor, ACC, in plant tissues. This study investigated the impact of heat stress on both 'Mirage Rose' WT petunia and its acdS-overexpressing transgenic lines. Heat stress-induced growth inhibition was observed in WT plants but not in transgenic plants. The increased stress tolerance of transgenic plants over WT plants was associated with lower ET production, ROS accumulation, higher SPAD values, water content, and relative water content. Furthermore, higher sensitivity of the WT to heat stress than the transgenic plants was confirmed by analysing ET signalling genes, heat shock transcription factor genes, and antioxidant- and proline-related genes, more strongly induced in WT than in transgenic plants. Overall, this study suggests the potential application of acdS overexpression in other floriculture plants as a viable strategy for developing heat stress-tolerant varieties. This approach holds promise for advancing the floricultural industry by overcoming challenges related to heat-induced growth inhibition and loss of flower quality.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Subventions
Organisme : The National Research Foundation of Korea (NRF) grant (MSIT)
ID : 2021R1A2C2008951
Informations de copyright
© 2024 Wiley‐VCH GmbH. Published by John Wiley & Sons Ltd.
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