Heterologous expression of atbbx21 enhances the rate of photosynthesis and alleviates photoinhibition in solanum tuberosum

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B-box (BBX) proteins are zinc-finger transcription factors containing one or two B-box motifs. BBX proteins act as key factors in the networks regulating growth and development. The relevance of BBX21 to light and abscisic acid signaling in seedling development is well established; however, its impo...

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Detalles Bibliográficos
Otros Autores: Crocco, Carlos Daniel, Gómez Ocampo, Gabriel, Ploschuk, Edmundo Leonardo, Mantese, Anita Ida, Botto, Javier Francisco
Formato: Artículo
Lenguaje:Inglés
Materias:
GENE EXPRESSION REGULATION
PHOTOSYNTHESIS
SOLANUM TUBEROSUM
GENETICS
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2018crocco.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 0 |a Heterologous expression of atbbx21 enhances the rate of photosynthesis and alleviates photoinhibition in solanum tuberosum 
520 |a B-box (BBX) proteins are zinc-finger transcription factors containing one or two B-box motifs. BBX proteins act as key factors in the networks regulating growth and development. The relevance of BBX21 to light and abscisic acid signaling in seedling development is well established; however, its importance in adult plant development and agronomic species is poorly understood. Therefore, we studied the effect of heterologous expression of Arabidopsis (Arabidopsis thaliana) BBX21 in potato (Solanum tuberosum) var Spunta. Three independent AtBBX21-expressing lines and the wild-type control were cultivated under sunlight and at controlled temperatures in a greenhouse. By anatomical, physiological, biochemical, and gene expression analysis, we demonstrated that AtBBX21 expressing plants were more robust and produced more tubers than wild-type plants. Interestingly, AtBBX21-expressing plants had higher rates of photosynthesis, with a significant increase in photosynthetic gene expression, and higher stomatal conductance, with increased size of the stomatal opening, without any associated decline in water use efficiency. Furthermore, AtBBX21-expressing potato plants had reduced photoinhibition associated with higher production of anthocyanins and phenolic compounds, and higher expression of genes in the phenylpropanoid biosynthesis pathway. To gain insights into the mechanism of BBX21, we evaluated the molecular, morphological, metabolic, and photosynthetic behavior in adult BBX21-overexpressing Arabidopsis. We conclude that BBX21 overexpression improved morphological and physiological attributes, and photosynthetic rates in nonoptimal, high-irradiance conditions, without associated impairment of water use efficiency. These characteristics of BBX21 may be useful for increasing production of potatoes, and potentially of other crops. 
653 |a GENE EXPRESSION REGULATION 
653 |a PHOTOSYNTHESIS 
653 |a SOLANUM TUBEROSUM 
653 |a GENETICS 
700 1 |a Crocco, Carlos Daniel  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 37590 
700 1 |a Gómez Ocampo, Gabriel  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 70030 
700 1 |9 6393  |a Ploschuk, Edmundo Leonardo  |u Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Botánica General. Buenos Aires, Argentina. 
700 1 |a Mantese, Anita Ida  |u Universidad de Buenos Aires. Facultad de Agronomía. Cátedra de Botánica General. Buenos Aires, Argentina.  |9 9747 
700 1 |9 65609  |a Botto, Javier Francisco  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
773 0 |t Plant physiology  |w (AR-BaUFA)SECS000156  |g Vol.177, n.1 (2018), p. 369–380, grafs., fot. 
856 |f 2018crocco  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2018crocco.pdf  |x ARTI202003 
856 |z LINK AL EDITOR  |u http://www.aspb.org 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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