Both HY5 and HYH are necessary regulators for low temperature-induced anthocyanin accumulation in Arabidopsis seedlings

Zhang, Yongqiang; Zheng, Sheng; Liu, Zhongjuan; Wang, Liguang; Bi, Yurong

doi:10.1016/j.jplph.2010.07.025

Cited by 127 publications

(85 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The detection of GUS activity in vegetative tissues is not totally unexpected. Indeed, it may be related to the environmental regulation of F3H (Pelletier and Shirley, 1996;Blö dner et al, 2007;Dubos et al, 2008;Zhang et al, 2011) and to counteracting chromatin-based regulation Schmitges et al, 2011). Consistent with this hypothesis, genome-wide analyses showed that in seedlings the F3H endogenous locus is largely enriched in H3K4me3, a mark usually associated with transcriptionally active chromatin .…”

Section: Rle Is Sufficient To Repress Transcriptional Activity and Ismentioning

confidence: 69%

Transcriptional Regulation of Arabidopsis LEAFY COTYLEDON2 Involves RLE, a cis-Element That Regulates Trimethylation of Histone H3 at Lysine-27

et al. 2011

View full text Add to dashboard Cite

LEAFY COTYLEDON2 (LEC2) is a master regulator of seed development in Arabidopsis thaliana. In vegetative organs, LEC2 expression is negatively regulated by Polycomb Repressive Complex2 (PRC2) that catalyzes histone H3 Lys 27 trimethylation (H3K27me3) and plays a crucial role in developmental phase transitions. To characterize the cis-regulatory elements involved in the transcriptional regulation of LEC2, molecular dissections and functional analyses of the promoter region were performed in vitro, both in yeast and in planta. Two cis-activating elements and a cis-repressing element (RLE) that is required for H3K27me3 marking were characterized. Remarkably, insertion of the RLE cis-element into pF3H, an unrelated promoter, is sufficient for repressing its transcriptional activity in different tissues. Besides improving our understanding of LEC2 regulation, this study provides important new insights into the mechanisms underlying H3K27me3 deposition and PRC2 recruitment at a specific locus in plants.

show abstract

Section: Rle Is Sufficient To Repress Transcriptional Activity and Ismentioning

confidence: 69%

Transcriptional Regulation of Arabidopsis LEAFY COTYLEDON2 Involves RLE, a cis-Element That Regulates Trimethylation of Histone H3 at Lysine-27

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Anthocyanins are commonly induced in plant vegetative tissues in response to a number of different abiotic stresses including drought, salinity, excess light, sub-or supra-optimal temperatures, and nitrogen and phosphorous deficiency. [2][3][4][5][6][7][8] The proposed roles of anthocyanins during abiotic stresses include quenching of ROS, 9,10 photoprotection, 11,12 stress signaling, 13,14 and xenohormesis (i.e., the biological principle that relates bioactive compounds in environmentally stressed plants and the increase in stress resistance and survival in animals that feed from them). 15,16 Plants as a group produce hundreds of structurally distinct anthocyanin species.…”

mentioning

confidence: 99%

Abiotic stresses induce different localizations of anthocyanins in Arabidopsis

Kovinich

Kayanja

Chanoca

et al. 2015

Plant Signaling & Behavior

141

View full text Add to dashboard Cite

Anthocyanins are induced in plants in response to abiotic stresses such as drought, high salinity, excess light, and cold, where they often correlate with enhanced stress tolerance. Numerous roles have been proposed for anthocyanins induced during abiotic stresses including functioning as ROS scavengers, photoprotectants, and stress signals. We have recently found different profiles of anthocyanins in Arabidopsis (Arabidopsis thaliana) plants exposed to different abiotic stresses, suggesting that not all anthocyanins have the same function. Here, we discuss these findings in the context of other studies and show that anthocyanins induced in Arabidopsis in response to various abiotic stresses have different localizations at the organ and tissue levels. These studies provide a basis to clarify the role of particular anthocyanin species during abiotic stress.Anthocyanins are plant pigments of the flavonoid subclass of phenylpropanoids characterized by a 3,5,7-trihydroxylated flavylium backbone. 1 The red-to-purple color imparted by anthocyanins to flowers, fruits, and seeds act as visual deterrents to herbivores, and attractants to pollinators and seed dispersers. Anthocyanins and other flavonoids also contribute to stress tolerance in plants. There is a growing interest in understanding the mechanisms by which anthocyanins help plants cope with abiotic stress, most importantly in the context of crop yield reduction due to global climate change. Anthocyanins are commonly induced in plant vegetative tissues in response to a number of different abiotic stresses including drought, salinity, excess light, sub-or supra-optimal temperatures, and nitrogen and phosphorous deficiency. 2-8 The proposed roles of anthocyanins during abiotic stresses include quenching of ROS, 9,10 photoprotection, 11,12 stress signaling, 13,14 and xenohormesis (i.e., the biological principle that relates bioactive compounds in environmentally stressed plants and the increase in stress resistance and survival in animals that feed from them). 15,16 Plants as a group produce hundreds of structurally distinct anthocyanin species. Arabidopsis (Arabidopsis thaliana) alone produces more than 20 different types of anthocyanins, but whether they have specific functions is unknown. Whereas all anthocyanins could have identical roles, the high metabolic cost of adding numerous decorations (e.g. sugar and acyl groups) to the flavylium backbone in the different anthocyanin species makes this scenario very unlikely.We recently reported that distinct profiles of anthocyanins are induced in seedlings of Arabidopsis in response to different abiotic stresses. 4 We analyzed seedlings grown in 8 abiotic stress conditions, including high salinity, cold, and an artificial stress medium termed anthocyanin induction condition (AIC), which consists of 3% sucrose and no additional nutrients. The fact that distinct profiles of anthocyanins are induced by different abiotic stresses suggested that different anthocyanins, or profiles of anthocyanins, have different function...

show abstract

“…Previous research demonstrated that low temperatures induced anthocyanin biosynthesis in Arabidopsis seedlings (Zhang et al, 2011). Next, we analyzed the anthocyanin content of transgenic Arabidopsis shoots, and our results showed that the anthocyanin content was promoted in transgenic Arabidopsis shoots.…”

Section: Discussionmentioning

confidence: 69%

A Medicago truncatula H+-pyrophosphatase gene, MtVP1, improves sucrose accumulation and anthocyanin biosynthesis in potato (Solanum tuberosum L.)

Wang

Xiang

et al. 2014

Genet. Mol. Res.

View full text Add to dashboard Cite

ABSTRACT. We recently cloned MtVP1, a type I vacuolar-type H + -translocating inorganic pyrophosphatase from Medicago truncatula. In the present study, we investigated the cellular location and the function of this H + -PPase in Arabidopsis and potato (Solanum tuberosum L.). An MtVP1::enhanced green fluorescent protein fusion was constructed, which localized to the plasma membrane of onion epidermal cells. Transgenic Arabidopsis thaliana overexpressing MtVP1 had more robust root systems and redder shoots than wild-type (WT) plants under conditions of cold stress. Furthermore, overexpression of MtVP1 in potato accelerated the formation and growth of vegetative organs. The tuber buds and stem base of transgenic potatoes became redder than those of WT plants, but flowering was delayed by approximately half a month. Interestingly, anthocyanin biosynthesis was promoted in transgenic Arabidopsis seedlings and potato tuber buds. The sucrose concentration of transgenic potato tubers and tuber buds was enhanced compared with that of WT plants. Furthermore, sucrose concentration in tubers was higher than that in tuber buds. Although there was no direct evidence to support Fuglsang's hypothetical model regarding the effects of H + -PPase on sucrose phloem loading, we speculated that sucrose concentration was increased in tuber buds owing to the increased concentration in tubers. Therefore, overexpressed MtVP1 enhanced sucrose accumulation of source organs, which might enhance sucrose transport to sink organs, thus affecting anthocyanin biosynthesis.

show abstract

Both HY5 and HYH are necessary regulators for low temperature-induced anthocyanin accumulation in Arabidopsis seedlings

Cited by 127 publications

References 41 publications

Transcriptional Regulation of Arabidopsis LEAFY COTYLEDON2 Involves RLE, a cis-Element That Regulates Trimethylation of Histone H3 at Lysine-27

Transcriptional Regulation of Arabidopsis LEAFY COTYLEDON2 Involves RLE, a cis-Element That Regulates Trimethylation of Histone H3 at Lysine-27

Abiotic stresses induce different localizations of anthocyanins in Arabidopsis

A Medicago truncatula H+-pyrophosphatase gene, MtVP1, improves sucrose accumulation and anthocyanin biosynthesis in potato (Solanum tuberosum L.)

Contact Info

Product

Resources

About