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The role of metabolic pathways regulated by the microRNA156 in bud outgrowth

Grant number: 09/12710-7
Support type:Scholarships in Brazil - Master
Effective date (Start): March 01, 2010
Effective date (End): February 29, 2012
Field of knowledge:Biological Sciences - Biochemistry - Molecular Biology
Principal researcher:Fabio Tebaldi Silveira Nogueira
Grantee:Geraldo Felipe Ferreira e Silva
Home Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil


Shoot architecture is an important factor that determines crop yield. It plays a significant role in resource acquisition and utilization and environmental adaptation. Shoot architecture is also an important factor impacting plant biomass production. The formation of axillary meristems and lateral buds and their subsequent outgrowth are key factors that control the final shoot architecture. Some genes have been implicated in the control of initiation of axillary meristems as well as lateral bud formation and outgrowth. One example of such genes is the family of transcription factors squamosa (SQUA) promoter-binding-like proteins (SPL). SPLs genes are post-transcriptionally regulated by a family of microRNAs, the microRNA 156 (miR156). MicroRNAs are a class of small non-coding RNAs that regulate post-transcriptionally the expression of endogenous genes in eukaryotes. Interestingly, the overexpression of miR156 promotes severe reduction of apical dominance in Arabidopsis, leading to a greater production of lateral branches and increased plant biomass. However, the role of the miR156 and SPLs in lateral branching is not completely understood thus far. Moreover, there are no studies elucidating which lateral branching-related genetic pathways are regulated by the miR156/SPL pathway. Such studies could contribute not only to better understanding the mechanisms involved in the process of formation of lateral organs, but also have potential applications in plant breeding.

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FERREIRA E SILVA, GERALDO FELIPE; SILVA, EDER MARQUES; AZEVEDO, MARIANA DA SILVA; CORAZON GUIVIN, MIKE ANDERSON; RAMIRO, DANIEL ALVES; FIGUEIREDO, CASSIA REGINA; CARRER, HELAINE; PEREIRA PERES, LAZARO EUSTAQUIO; SILVEIRA NOGUEIRA, FABIO TEBALDI. microRNA156-targeted SPL/ SBP box transcription factors regulate tomato ovary and fruit development. Plant Journal, v. 78, n. 4, p. 604-618, MAY 2014. Web of Science Citations: 71.
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
SILVA, Geraldo Felipe Ferreira e. MiR156targeted Squamosa Promoter-binding proteins (SPLs) regulate fruit development and determinacy. 2012. Master's Dissertation - Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) Piracicaba.

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