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Expression patterns of AP1, FUL, FT and LEAFY orthologs in Vitaceae support the homology of tendrils and inflorescences throughout the grape family

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The leaf-opposed tendril, a characteristic organ in Vitaceae (grape family), is likely a morphological key
innovation for the family. It has been considered as the homologous organ of the inflorescence. Expression of floral
related genes has been studied extensively in the model species, grapevine (Vitis vinifera), to uncover molecular
mechanisms that determine the development of a common uncommitted primordium (or an anlage) into an
inflorescence or a tendril. However, to investigate the homology of tendrils and inflorescences in Vitaceae, evidence
only from the highly derived grapevine is insufficient. Therefore, gene sequences of four key floral meristem genes,
i.e., FUL, AP1, FT and LEAFY orthologs were obtained from transcriptome data of 14 Vitaceae species, the grapevine
genome and the outgroup Leea guineensis. Additionally, expression patterns of these four genes were studied in
leaves, tendrils, and inflorescences of five phylogenetically distinct Vitaceae species. Expression of the AP1 ortholog
was only detected in the tendril and the inflorescence but not in the leaf for all species, indicating that the tendril is more like the inflorescence than the leaf and that the tendrils from these six species including grapevine are likely homologous. Meanwhile, expression of the LEAFY ortholog was found in the inflorescence but not in the tendril and leaf, suggesting that the LEAFY ortholog expression might play a role in determining whether an anlage develops into a tendril or an inflorescence. Based on combined evidence from the expression patterns of these four genes, the
possible mechanisms on the evolution of tendrils are discussed.

Key words: AP1, euFUL, FT, LEAFY, tendrils, Vitaceae.

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Ketersediaan

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Informasi Detail

Judul Seri

J. Syst. Evol.

No. Panggil

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Penerbit

: Institute of Botany., 2015

Deskripsi Fisik

J. Syst. Evol. 53 (5): 469–476, 2015

Bahasa

English

ISBN/ISSN

doi: 10.1111/jse.121

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

BIOLOGI

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

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