A grapevine TFL1 homologue can delay flowering and alter floral development when overexpressed in heterologous species

Functional Plant Biology : FPB
Paul K BossMark R Thomas

Abstract

Grapevines (Vitis vinifera L.) have unusual plant architecture in that the shoot apical meristem produces both vegetative structures and primordia that are capable of forming inflorescences at regular intervals. These primordia are termed 'uncommitted' and differentiate into inflorescences or tendrils depending on the environment in which they are produced. To investigate the molecular relationship between tendrils and inflorescences and vine architecture, we cloned a TFL1 homologue from grapevine (VvTFL1). VvTFL1 is expressed in shoot apices early in latent bud development and in buds soon after bud burst. The grapevine homologue of LEAFY, VFL, is expressed at the same stages as VvTFL1 as well as in the later stages of inflorescence development. Neither VvTFL1 nor VFL were detected in tendrils. VvTFL1 was overexpressed in tobacco and Arabidopsis to confirm that it was functionally similar to TFL1 and not the close homologue FT. Flowering was delayed significantly in tobacco and Arabidopsis transformants overexpressing VvTFL1. However, an unexpected phenotype was observed in some of the transgenic Arabidopsis lines where the floral meristem became indeterminate and a new inflorescence would emerge from within the developing sil...Continue Reading

References

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May 17, 2005·Proceedings of the National Academy of Sciences of the United States of America·Yoshie HanzawaDesmond Bradley
Jul 1, 2003·Functional Plant Biology : FPB·Paul K BossMark R Thomas

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Citations

Aug 13, 2014·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Iris FechterReinhard Töpfer
Jan 13, 2016·Science China. Life Sciences·Liya Wei, Xiaofeng Cao
Dec 2, 2009·The Plant Journal : for Cell and Molecular Biology·Lucie FernandezJosé M Martinez-Zapater
Jul 26, 2008·Journal of Experimental Botany·John D WilkieTrevor Olesen
Aug 6, 2014·BMC Plant Biology·Lucie FernandezJosé Miguel Martinez-Zapater
Feb 15, 2019·Plant Molecular Biology·Yaohui GaoQixiang Zhang
Dec 13, 2006·Plant Molecular Biology·María José CarmonaJosé Miguel Martínez-Zapater
May 30, 2008·Journal of Experimental Botany·G LebonC Clément
Jul 4, 2008·Journal of Experimental Botany·María José CarmonaMark R Thomas
May 1, 2019·Annual Review of Plant Biology·Matthew B HuffordPaul Gepts
Jun 9, 2020·Seminars in Cell & Developmental Biology·Suhyun JinJi Hoon Ahn
Nov 13, 2007·Plant Physiology·Olga N DanilevskayaCarl R Simmons

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Datasets Mentioned

BETA
AF378127
AAB36112
AAD43529
BAA77838
BAA77836
AAG31808
AAD42896

Methods Mentioned

BETA
PCR
transgenic
transgenics

Software Mentioned

PRETTYBOX
GCG
DISTANCES
GROWTREE
PILEUP

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