Effect of blue LED light intensity on carotenoid accumulation in citrus juice sacs.
Identifieur interne : 000682 ( Main/Curation ); précédent : 000681; suivant : 000683Effect of blue LED light intensity on carotenoid accumulation in citrus juice sacs.
Auteurs : Lancui Zhang [Japon] ; Gang Ma [Japon] ; Kazuki Yamawaki [Japon] ; Yoshinori Ikoma [Japon] ; Hikaru Matsumoto [Japon] ; Terutaka Yoshioka [Japon] ; Satoshi Ohta [Japon] ; Masaya Kato [Japon]Source :
- Journal of plant physiology [ 1618-1328 ] ; 2015.
English descriptors
- KwdEn :
- Carotenoids (metabolism), Carotenoids (radiation effects), Citrus (genetics), Citrus (metabolism), Citrus (radiation effects), Fruit (metabolism), Fruit (radiation effects), Gene Expression Regulation, Plant (radiation effects), Light, Plant Proteins (genetics), Plant Proteins (metabolism), Species Specificity.
- MESH :
- chemical , genetics : Plant Proteins.
- chemical , metabolism : Carotenoids, Plant Proteins.
- chemical , radiation effects : Carotenoids.
- genetics : Citrus.
- metabolism : Citrus, Fruit.
- radiation effects : Citrus, Fruit, Gene Expression Regulation, Plant.
- Light, Species Specificity.
Abstract
In the present study, the effects of blue LED light intensity on carotenoid accumulation and expression of genes related to carotenoid biosynthesis were investigated in the juice sacs of Satsuma mandarin (Citrus unshiu Marc.) and Valencia orange (Citrus sinensis Osbeck) in vitro. The results showed that 100 μmol m(-2)s(-1) blue LED light (100B) was effective for increasing carotenoid content, especially β-cryptoxanthin, in Satsuma mandarin after cultured in vitro for four weeks. In Valencia orange, in contrast, 50 μmol m(-2)s(-1) blue LED light (50B) treatment was effective for inducing carotenoid accumulation through increasing the contents of two major carotenoids, all-trans-violaxanthin and 9-cis-violaxanthin. In addition, gene expression results showed that the simultaneous increases in the expression of genes (CitPSY, CitPDS, CitZDS, CitLCYb2, and CitHYb) involved in producing β,β-xanthophylls were well consistent with the accumulation of β-cryptoxanthin in Satsuma mandarin under 100B, and violaxanthin in Valencia orange under 50B. The results presented herein contribute to further elucidating the regulatory mechanism of carotenoid accumulation by blue LED light.
DOI: 10.1016/j.jplph.2015.09.006
PubMed: 26432407
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pubmed:26432407Le document en format XML
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<front><div type="abstract" xml:lang="en">In the present study, the effects of blue LED light intensity on carotenoid accumulation and expression of genes related to carotenoid biosynthesis were investigated in the juice sacs of Satsuma mandarin (Citrus unshiu Marc.) and Valencia orange (Citrus sinensis Osbeck) in vitro. The results showed that 100 μmol m(-2)s(-1) blue LED light (100B) was effective for increasing carotenoid content, especially β-cryptoxanthin, in Satsuma mandarin after cultured in vitro for four weeks. In Valencia orange, in contrast, 50 μmol m(-2)s(-1) blue LED light (50B) treatment was effective for inducing carotenoid accumulation through increasing the contents of two major carotenoids, all-trans-violaxanthin and 9-cis-violaxanthin. In addition, gene expression results showed that the simultaneous increases in the expression of genes (CitPSY, CitPDS, CitZDS, CitLCYb2, and CitHYb) involved in producing β,β-xanthophylls were well consistent with the accumulation of β-cryptoxanthin in Satsuma mandarin under 100B, and violaxanthin in Valencia orange under 50B. The results presented herein contribute to further elucidating the regulatory mechanism of carotenoid accumulation by blue LED light.</div>
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