The molecular control of tendril development in angiosperms

The climbing habit has evolved multiple times during the evolutionary history of angiosperms. Plants evolved various strategies for climbing, such as twining stems, tendrils and hooks. Tendrils are threadlike organs with the ability to twine around other structures through helical growth; they may b...

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Bibliographic Details
Published in:The New phytologist 2018-05, Vol.218 (3), p.944-958
Main Authors: Sousa‐Baena, Mariane S., Lohmann, Lúcia G., Hernandes‐Lopes, José, Sinha, Neelima R.
Format: Article
Language:English
Subjects:
Angiosperms
Bignoniaceae
Body organs
Capacity
climbing habit
Coiling
Fabaceae
gene expression
Genetics
Growth
helical growth
Hooks
lianas
ontogenetic origin
Ontogeny
Organs
Phylogeny
Research review
tendrils
vines
Yarns
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Summary:The climbing habit has evolved multiple times during the evolutionary history of angiosperms. Plants evolved various strategies for climbing, such as twining stems, tendrils and hooks. Tendrils are threadlike organs with the ability to twine around other structures through helical growth; they may be derived from a variety of structures, such as branches, leaflets and inflorescences. The genetic capacity to grow as a tendrilled climber existed in some of the earliest land plants; however, the underlying molecular basis of tendril development has been studied in only a few taxa. Here, we summarize what is known about the molecular basis of tendril development in model and candidate model species from key tendrilled families, that is, Fabaceae, Vitaceae, Cucurbitaceae, Passifloraceae and Bignoniaceae. Studies on tendril molecular genetics and development show the molecular basis of tendril formation and ontogenesis is diverse, even when tendrils have the same ontogenetic origin, for example leaflet-derived tendrils in Fabaceae and Bignoniaceae. Interestingly, all tendrils perform helical growth during contact-induced coiling, indicating that such ability is not correlated with their ontogenetic origin or phylogenetic history. Whether the same genetic networks are involved during helical growth in diverse tendrils still remains to be investigated.
ISSN:0028-646X
1469-8137
DOI:10.1111/nph.15073