Light-induced vegetative anthocyanin pigmentation in Petunia.
Light-induced vegetative anthocyanin pigmentation in Petunia.
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DOI：
10.1093/jxb/erp097
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发表时间：
2009
影响因子：
6.9
通讯作者：
Davies KM
中科院分区：
文献类型：
--
作者：
Albert NW;Lewis DH;Zhang H;Irving LJ;Jameson PE;Davies KM
Lc矮牵牛系统显示出增强的光诱导植物色素沉着，用于研究强光如何影响花青素生物合成，并评估花青素色素沉着对光合作用的影响。当在高光条件下生长时，LC矮牵牛植物在整个叶子和茎中表现出强烈的紫色花青素色素沉着，但在阴凉条件下生长时仍保持无青色。颜色表型与花青素和黄酮醇的积累以及黄酮醇和花青素生产所需的早期和晚期类黄酮生物合成基因的激活相匹配。 Lc矮牵牛的色素沉着仅发生在通常诱导野生型米切尔矮牵牛[矮牵牛×（矮牵牛×矮牵牛cv.“天堂玫瑰”）]中积累适量花青素的条件下。 Lc矮牵牛叶子中的花青素色素似乎可以屏蔽下面的光合组织，增加光饱和度和光补偿点，而不降低最大光合同化率（Amax）。在Lc矮牵牛系统中，bHLH因子叶色是组成型表达的，花青素调节系统的bHLH（Lc）和WD40（An11）成分的表达不受限制，这表明强光诱导的花青素色素沉着是由内源性MYB转录因子调节的。
The Lc petunia system, which displays enhanced, light-induced vegetative pigmentation, was used to investigate how high light affects anthocyanin biosynthesis, and to assess the effects of anthocyanin pigmentation upon photosynthesis. Lc petunia plants displayed intense purple anthocyanin pigmentation throughout the leaves and stems when grown under high-light conditions, yet remain acyanic when grown under shade conditions. The coloured phenotypes matched with an accumulation of anthocyanins and flavonols, as well as the activation of the early and late flavonoid biosynthetic genes required for flavonol and anthocyanin production. Pigmentation in Lc petunia only occurred under conditions which normally induce a modest amount of anthocyanin to accumulate in wild-type Mitchell petunia [Petunia axillaris×(Petunia axillaris×Petunia hybrida cv. ‘Rose of Heaven’)]. Anthocyanin pigmentation in Lc petunia leaves appears to screen underlying photosynthetic tissues, increasing light saturation and light compensation points, without reducing the maximal photosynthetic assimilation rate (Amax). In the Lc petunia system, where the bHLH factor Leaf colour is constitutively expressed, expression of the bHLH (Lc) and WD40 (An11) components of the anthocyanin regulatory system were not limited, suggesting that the high-light-induced anthocyanin pigmentation is regulated by endogenous MYB transcription factors.
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影响因子：
6.9
作者：
Merzlyak MN;Chivkunova OB;Solovchenko AE;Naqvi KR
通讯作者：
Naqvi KR
影响因子：
4.8
作者：
Hernandez, JM;Heine, GF;Grotewold, E
通讯作者：
Grotewold, E
影响因子：
3
作者：
Manetas, Y;Petropoulou, Y;Drinia, A
通讯作者：
Drinia, A
影响因子：
5.2
作者：
Aida, R;Yoshida, K;Shibata, M
通讯作者：
Shibata, M
影响因子：
5.2
作者：
Hunter, DA;Steele, BC;Reid, MS
通讯作者：
Reid, MS