Reflections on the Triptych of Meristems That Build Flowering Branches in Tomato.
Solanum lycopersicum
branching
flowering
inflorescence
sympodial
tomato
Journal
Frontiers in plant science
ISSN: 1664-462X
Titre abrégé: Front Plant Sci
Pays: Switzerland
ID NLM: 101568200
Informations de publication
Date de publication:
2022
2022
Historique:
received:
20
10
2021
accepted:
14
01
2022
entrez:
25
2
2022
pubmed:
26
2
2022
medline:
26
2
2022
Statut:
epublish
Résumé
Branching is an important component determining crop yield. In tomato, the sympodial pattern of shoot and inflorescence branching is initiated at floral transition and involves the precise regulation of three very close meristems: (i) the shoot apical meristem (SAM) that undergoes the first transition to flower meristem (FM) fate, (ii) the inflorescence sympodial meristem (SIM) that emerges on its flank and remains transiently indeterminate to continue flower initiation, and (iii) the shoot sympodial meristem (SYM), which is initiated at the axil of the youngest leaf primordium and takes over shoot growth before forming itself the next inflorescence. The proper fate of each type of meristems involves the spatiotemporal regulation of FM genes, since they all eventually terminate in a flower, but also the transient repression of other fates since conversions are observed in different mutants. In this paper, we summarize the current knowledge about the genetic determinants of meristem fate in tomato and share the reflections that led us to identify sepal and flower abscission zone initiation as a critical stage of FM development that affects the branching of the inflorescence.
Identifiants
pubmed: 35211138
doi: 10.3389/fpls.2022.798502
pmc: PMC8861353
doi:
Types de publication
Journal Article
Langues
eng
Pagination
798502Informations de copyright
Copyright © 2022 Périlleux and Huerga-Fernández.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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