Jasmonic acid biosynthetic genes TgLOX4 and TgLOX5 are involved in daughter bulb development in tulip (Tulipa gesneriana).
Journal
Horticulture research
ISSN: 2662-6810
Titre abrégé: Hortic Res
Pays: England
ID NLM: 101655540
Informations de publication
Date de publication:
11 Feb 2022
11 Feb 2022
Historique:
entrez:
11
2
2022
pubmed:
12
2
2022
medline:
12
2
2022
Statut:
aheadofprint
Résumé
The tulip bulbs are modified underground stems which originate from axillary meristems of mother bulb scales. Hormones including jasmonic acids (JAs) play key roles in regulating tulip bulb development. Here, we compared variations of daughter bulb development through transcriptomic profiling analysis and characterized the functions of JA biosynthesis related genes during daughter bulb enlargement. The results showed that tulip varieties exhibited contrasting bulb size variations. Transcriptomic analyses revealed that genes involved in plant hormones and development were significantly changed following tulip bulb growth, including two lipoxygenase genes TgLOX4 and TgLOX5. Ectopic overexpression of TgLOX4 and TgLOX5 in Arabidopsis enhanced endogenous JA content, improved plant growth and increased lateral root numbers. Silencing of these two genes in tulip repressed the growth of daughter bulbs. Furthermore, exogenous JA treatment promoted tulip bulb growth, whereas JA biosynthesis inhibitor sodium diethyldithiocarbamate (DIECA) inhibited this process. This study offers supporting evidence for the involvement of tulip TgLOX4 and TgLOX5 in the regulation of daughter bulb growth and development.
Identifiants
pubmed: 35147193
pii: 6526917
doi: 10.1093/hr/uhac006
pmc: PMC8947238
pii:
doi:
Types de publication
Journal Article
Langues
eng
Informations de copyright
© The Author(s) 2022. Published by Oxford University Press. All rights reserved.
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