ArticleAnnals of botany2012
A role for PHANTASTICA in medio-lateral regulation of adaxial domain development in tomato and tobacco leaves.
Article in Annals of botany, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Double flower is associated with defects in a Phantastica-like gene in Catharanthus roseus.Scientific reports · 2026Article
- Understanding the molecular mechanism of leaf morphogenesis in vegetable crops conduces to breeding process.Frontiers in plant science · 2022Review
- Evolution and functional diversification of R2R3-MYB transcription factors in plants.Horticulture research · 2022Article
- Coordination of Leaf Development Across Developmental Axes.Plants (Basel, Switzerland) · 2019Review
- Physiology and molecular biology of plants : an international journal of functional plant biology · 2016Article
- Evolutionary developmental transcriptomics reveals a gene network module regulating interspecific diversity in plant leaf shape.Proceedings of the National Academy of Sciences of the United States of America · 2014Article
- STM/BP-Like KNOXI Is Uncoupled from ARP in the Regulation of Compound Leaf Development in Medicago truncatula.The Plant cell · 2014Article
- Regulation of compound leaf development by PHANTASTICA in Medicago truncatula.Plant physiology · 2014Article
- Regulation of Compound Leaf Development.Plants (Basel, Switzerland) · 2013Review
- Abaxial Greening Phenotype in Hybrid Aspen.Plants (Basel, Switzerland) · 2013Article
Corrections and comments
- Erratum issued
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsDiverse leaf forms in nature can be categorized into two groups: simple and compound. A simple leaf has a single blade unit, whilst a compound leaf is dissected into leaflets. For both simple and compound leaves, a MYB domain transcription factor PHANTASTICA (PHAN) plays an important role in establishing the adaxial domain in the leaf. Absence of PHAN in arabidopsis and antirrhinum leaves supresses blade development, and in tomato suppresses leaflet development. However, in the rachis and petiole regions of tomato leaves where PHAN and the adaxial domain coexist, it has been unclear why leaf blade and leaflets are not formed. We hypothesized that PHAN regulates the medio-lateral extent of the adaxial domain, thereby determining compound leaf architecture.
methodsTo test this hypothesis, we generated and analysed transgenic tomato plants expressing tomato PHAN (SlPHAN) under the Cauliflower mosaic virus (CaMV) 35S promoter in both sense and antisense orientations, and tobacco plants that over-express tomato SlPHAN. KEY
resultsModulations in SlPHAN resulted in a variety of leaf morphologies such as simple, ternate and compound in either a peltate or non-peltate arrangement. Measurements of the extent of the adaxial domain along the wild-type tomato leaf axis showed that the adaxial domain is narrowed in the rachis and petiole in comparison with regions where laminar tissue arises. In antiSlPHAN transgenic leaves, no blade or leaflet was formed where the adaxial domain was medio-laterally narrowed, and KNOX gene expression was correlatively upregulated. CaMV35S::SlPHAN expression led to widening of the adaxial domain and ectopic blade outgrowth in the rachis of tomato and in the petiole of tobacco. Taken together, these results suggest that SlPHAN plays a role in medio-lateral extension of the adaxial domain and contributes to final leaf morphology in tomato.
conclusionsThis study provides a novel insight into leaf architecture in tomato and highlights how changes in the expression domain of a master regulator gene such as SlPHAN can be translated into diverse final leaf morphologies.
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