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Light quality management in fruit orchards: physiological and technological aspects Chilean J. Agric. Res.
M. Bastías,Richard; Corelli-Grappadelli,Luca.
Light quality (sunlight spectrum) management promises to provide a new technological alternative to sustainable production in horticultural crops. However, little information exists about physiological and technological aspects on light quality management in fruit crops. Sunlight composition changes widely in orchard canopies, inducing different plant responses in fruit trees mediated by phytochrome (PHY) and cryptochrome (CRY) activity. High proportion of far-red (FR) in relation to red (R) light increases shoot elongation, while blue (B) light induces shoot dwarfing. Red and ultraviolet (UV) light increases fruit skin anthocyanin synthesis, while FR light shows a negative effect. Red and B light can also alter leaf morpho-physiological traits in fruit...
Tipo: Journal article Palavras-chave: Red; Far-red and blue light; Phytochrome; Cryptochrome; Photo-morphogenesis; Reflective films; Colored nets.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000400018
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Identification of photoperception and light signal transduction pathways in citrus Genet. Mol. Biol.
Quecini,Vera.
Studies employing model species have elucidated several aspects of photoperception and light signal transduction that control plant development. However, the information available for economically important crops is scarce. Citrus genome databases of expressed sequence tags (EST) were investigated in order to identify genes coding for functionally characterized proteins responsible for light-regulated developmental control in model plants. Approximately 176,200 EST sequences from 53 libraries were queried and all bona fide and putative photoreceptor gene families were found in citrus species. We have identified 53 orthologs for several families of transcriptional regulators and cytoplasmic proteins mediating photoreceptor-induced responses although some...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryptochrome; Data mining; Light signaling; Phototropin; Phytochrome.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500007
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