Sucrose-Specific Induction of the Anthocyanin Biosynthetic Pathway in Arabidopsis

Solfanelli, Cinzia; Poggi, Alessandra; Loreti, Elena; Alpi, Amedeo; Perata, Pierdomenico

doi:10.1104/pp.105.072579

Cited by 715 publications

(655 citation statements)

References 54 publications

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“…Our results suggest that the selective degradation of BBX22 might fine-tune the expression of ELIP2 for optimal chlorophyll accumulation. BBX22 also up-regulates genes involved in flavonoid and anthocyanin biosynthesis pathways, including CHS, CHI, F3H, and 4CL3 (Li et al, 1993;Shirley et al, 1995;Ehlting et al, 1999;Raes et al, 2003;Solfanelli et al, 2006;Poustka et al, 2007;Owens et al, 2008;Buer and Djordjevic, 2009). This observation explains the excess accumulation of anthocyanin in etiolated cop1BBX22-GFPox plants (Fig.…”

Section: Bbx22 Influences Genes On Light Signaling and Hormone Responsesmentioning

confidence: 99%

COP1-Mediated Degradation of BBX22/LZF1 Optimizes Seedling Development in Arabidopsis

2011

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Light regulates multiple aspects of growth and development in plants. Transcriptomic changes govern the expression of signaling molecules with the perception of light. Also, the 26S proteasome regulates the accumulation of positive and negative regulators for optimal growth of Arabidopsis (Arabidopsis thaliana) in the dark, light, or light/dark cycles. BBX22, whose induction is both light regulated and HY5 dependent, is a positive regulator of deetiolation in Arabidopsis. We found that during skotomorphogenesis, the expression of BBX22 needs to be tightly regulated at both transcriptional and posttranslational levels. During photomorphogenesis, the expression of BBX22 transiently accumulates to execute its roles as a positive regulator. BBX22 protein accumulates to a higher level under short-day conditions and functions to inhibit hypocotyl elongation. The proteasome-dependent degradation of BBX22 protein is tightly controlled even in plants overexpressing BBX22. An analysis of BBX22 degradation kinetics shows that the protein has a short half-life under both dark and light conditions. COP1 mediates the degradation of BBX22 in the dark. Although dispensable in the dark, HY5 contributes to the degradation of BBX22 in the light. The constitutive photomorphogenic development of the cop1 mutant is enhanced in cop1BBX22ox plants, which show a short hypocotyl, high anthocyanin accumulation, and expression of light-responsive genes. Exaggerated light responsiveness is also observed in cop1BBX22ox seedlings grown under short-day conditions. Therefore, the proper accumulation of BBX22 is crucial for plants to maintain optimal growth when grown in the dark as well as to respond to seasonal changes in daylength.

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Section: Bbx22 Influences Genes On Light Signaling and Hormone Responsesmentioning

confidence: 99%

COP1-Mediated Degradation of BBX22/LZF1 Optimizes Seedling Development in Arabidopsis

2011

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“…Exogenous sucrose as an environmental factor greatly impacted plant gene expression and concentrations of cellular metabolites (Solfanelli C, 2006;Hummel M, 2009). In this study, expression profiles of genes involved in energy metabolism in Brassica napus were analyzed ( Figure 5).…”

Section: Exogenous Sucrose Regulates Expression Of the Key Genes Invomentioning

confidence: 99%

Effects of Sucrose on Germination and Seedling Development of Brassica Napus

Xu¹,

Tan²,

Zheng³

2010

IJB

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Sucrose is the major carbon form translocated in higher plants, and also works as an important signaling molecule that regulates genes involved in photosynthesis, metabolism, and developmental processes. Many studies focused on glucose, normal decomposed product of sucrose, demonstrated that glucose resulted in a delay of germination and an inhibition of seedling development. In this study, we determined the effects of sucrose on germination kinetics and seedlings development. Our results indicated that exogenous sucrose didn't have a similar role to glucose, showed 167mM sucrose delayed the rate of seed germination in wild-ecotype seeds by extending peak time of germination, and had multiple roles to seedling development. Overhigh concentration of sucrose (333mM) restrained germination and seedling development seriously. Further experiments of transcript profiles of genes involved in energy and carbohydrate metabolism indicated that seedlings absorbed and utilized the exogenous sucrose as a priority while reduced the need for internal source.

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“…For example, MYB11, MYB12, MYB111, MYB75/ PAP1, and AtMYBD work as positive regulators whereas MYB-LIKE 2 (MYBL2) functions as a negative regulator. 17,19,[27][28][29][30] Among them, MYB75/PAP1 is a master regulator of the anthocyanin biosynthesis pathway; 19,31 however, direct evidence reflecting whether or not PAP1 can act on the circadian regulation of this biosynthesis pathway is still lacking. 32 Currently, a study has revealed that 2 circadian components NIGHT LIGHT-INDUCIBLE AND CLOCK-REGULATED (LNK) and RVE8 collaborate to control the anthocyanin metabolic pathway.…”

mentioning

confidence: 99%

MYB-related transcription factors function as regulators of the circadian clock and anthocyanin biosynthesis in Arabidopsis

Nguyen

Lee

2016

Plant Signaling & Behavior

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Sucrose-Specific Induction of the Anthocyanin Biosynthetic Pathway in Arabidopsis

Cited by 715 publications

References 54 publications

COP1-Mediated Degradation of BBX22/LZF1 Optimizes Seedling Development in Arabidopsis

COP1-Mediated Degradation of BBX22/LZF1 Optimizes Seedling Development in Arabidopsis

Effects of Sucrose on Germination and Seedling Development of Brassica Napus

MYB-related transcription factors function as regulators of the circadian clock and anthocyanin biosynthesis in Arabidopsis

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