... thaliana . Previous studies have suggested that PECT1 regulates flowering time by modulating the interaction between phosphatidylcholine and FLOWERING LOCUS T (FT), a florigen, in the shoot apical meristem (SAM). Here, we show that knockdown of PECT1 by artificial microRNA in the SAM ( pFD::amiR-PECT1...

... for the paternal control of early embryo development. When gametophyte defects were bypassed by specific pollen complementation, loss of MED30 led to early embryo development arrest. Later in plant development, MED30 promotes flowering through multiple signaling pathways; its downregulation led to a phase change...

...Mitsutomo Abe; Shingo Kosaka; Mio Shibuta; Kenji Nagata; Tomohiro Uemura; Akihiko Nakano; Hidetaka Kaya ABSTRACT FLOWERING LOCUS T (FT) is an essential component of florigen in Arabidopsis thaliana . Transcription of FT is induced in leaves, and the resulting FT protein is transported to the shoot...

... by photoperiod for VRN2 but was independent of photoperiod for ODDSOC2 . We also find this warm temperature interruption affects flowering time and floret number and is stage specific. This research highlights the important balance between floral activators and repressors in coordinating the response of a plant...

... attributed. Highlighted Article: A nucleotide change in the microRNA172 binding site of the AP2 gene Q played a critical role in wheat domestication and the origin of free-threshing modern wheats. See also Greenwood et al. in this issue. Wheat Spike development miRNA Flowering AP2 Q...

...Vinicius C. Galvão; Daniel Horrer; Frank Küttner; Markus Schmid The transition from vegetative to reproductive development is a central event in the plant life cycle. To time the induction of flowering correctly, plants integrate environmental and endogenous signals such as photoperiod, temperature...

.... * Authors for correspondence ( [email protected] ; [email protected] ) Competing interests statement The authors declare no competing financial interests. © 2012. Published by The Company of Biologists Ltd 2012 Plant development Flowering Environmental interactions...

...Aimone Porri; Stefano Torti; Maida Romera-Branchat; George Coupland The plant growth regulator gibberellin (GA) contributes to many developmental processes, including the transition to flowering. In Arabidopsis , GA promotes this transition most strongly under environmental conditions such as short...

... and reproductive organs, and that terminates with the production of carpels. Floral transition. More correctly known as the `transition to flowering'. It is interchangeable with the concept of `reproductive phase transition' (see definition below). Heteroblasty. The anatomical and morphological differences...

...Matthew R. Willmann; R. Scott Poethig Plants undergo two major post-embryonic developmental transitions – the juvenile-to-adult vegetative transition (vegetative phase change) and the adult-to-reproductive transition (flowering). In woody plants, these transitions can be separated by years...

... in potato promotes flowering,accelerates tuberization under moderately inductive photoperiods and triggers tuber formation under long days. In plants with a reduced abundance of PHYB,which tuberize under long days, both BEL5 mRNA and miR172 levels are reduced in leaves and increased in stolons...

... analyses indicate that CPL3 is specifically expressed in leaf epidermal cells, including stomate guard cells. Notably, the CPL3 gene has pleiotropic effects on flowering development, epidermal cell size and trichome branching through the regulation of endoreduplication. † Author for correspondence (e...

... in Arabidopsis thaliana . Mutations in Arabidopsis SWC6 ( AtSWC6 ), SUPPRESSOR OF FRIGIDA 3 ( SUF3 ) and PHOTOPERIOD-INDEPENDENT EARLY FLOWERING 1 ( PIE1 ), homologs of SWC6, ARP6 and SWR1 , respectively, caused similar developmental defects, including leaf serration, weak apical dominance,flowers with extra...

...Sang Yeol Kim; Scott D. Michaels The floral inhibitor FLOWERING LOCUS C ( FLC ) is a crucial regulator of flowering time in Arabidopsis , and is positively regulated by the FRIGIDA ( FRI ) gene in late-flowering winter-annual accessions. In rapid-cycling accessions, FLC expression is suppressed...

...Romaric Bouveret; Nicole Schönrock; Wilhelm Gruissem; Lars Hennig The transition to flowering is tightly controlled by endogenous programs and environmental signals. We found that MSI1 is a novel flowering-time gene in Arabidopsis . Both partially complemented msi1 mutants and MSI1 antisense...

...Ian R. Henderson; Fuquan Liu; Sinead Drea; Gordon G. Simpson; Caroline Dean The autonomous pathway functions to promote flowering in Arabidopsis by limiting the accumulation of the floral repressor FLOWERING LOCUS C ( FLC ). Within this pathway FCA is a plant-specific, nuclear RNA-binding protein...

... and CLF are also expressed more broadly during vegetative development,where they act to repress genes controlling flowering time or floral development ( Goodrich et al.,1997 ; Luo et al.,2000 ; Vielle-Calzada et al.,1999 ; Yoshida et al.,2001 ). However, differences in expression are not sufficient...

...Hailong An; Clotilde Roussot; Paula Suárez-López; Laurent Corbesier; Coral Vincent; Manuel Piñeiro; Shelley Hepworth; Aidyn Mouradov; Samuel Justin; Colin Turnbull; George Coupland Flower development at the shoot apex is initiated in response to environmental cues. Day length is one of the most...

... flowering time and of anther development. MiR159 directs the cleavage of mRNA encoding GAMYB-related proteins. These proteins are transcription factors that are thought to be involved in the GA-promoted activation of LEAFY , and in the regulation of anther development. We show that miR159 levels...

.... Environmental stimuli such as light, temperature and nutrient availability often influence the shape and identity of the organs that develop from these primordia. In particular, the transition from forming vegetative lateral organs to producing flowers often occurs in response to environmental cues...