Protective effect of supplemental anthocyanins on <i>Arabidopsis</i> leaves under high light

Zeng, Xueqin; Chow, Wah Soon; Su, Lihe; XinXiang, Peng; Peng, Chang-Lian

doi:10.1111/j.1399-3054.2009.01316.x

Cited by 72 publications

(45 citation statements)

References 47 publications

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“…• -localization in situ: The method of ROS localization was conducted according to Romero-Puertas et al (2004) and Zeng et al (2010) with some modifications. After 120-h treatment, samples were collected for analysis of H 2 O 2 and O 2 • -localization in situ.…”

Section: H 2 O 2 and Omentioning

confidence: 99%

The influence of low temperature on photosynthesis and antioxidant enzymes in sensitive banana and tolerant plantain (Musa sp.) cultivars

Zhang

Zhang²,

Chow

et al. 2011

Photosynt.

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Low temperature (LT) is one of the major factors that limit crop production and reduce yield. To better understand the cold-tolerance mechanism in the plantains, a sensitive cultivar Williams (Musa acuminata AAA cv. Williams) and a tolerant cultivar Cachaco (Musa paradisiaca ABB cv. Dajiao) were used. LT resulted in increased malondialdehyde (MDA) content, elevated contents of hydrogen peroxide (H 2 O 2 ) and superoxide radical (O 2• -), and decreased photochemical efficiency (F v /F m ) and net photosynthetic rate (P N ), but cv. Cachaco showed better LT tolerance than cv. Williams. After LT treatment for 120 h, total scavenging capability (DPPH • scavenging capability) in Williams showed a significant decrease but no significant alternations was found in Cachaco. Ascorbate peroxidase (APX) and peroxidase (POD) displayed a significant increase but superoxide dismutase (SOD) showed no significant alternations and catalase (CAT) showed a significant decrease in Cachaco after 120 h of LT treatment. All the four antioxidant enzymes above showed a significant decrease in Williams after 120 h of LT treatment. Our results suggest that higher activities of APX, POD, SOD, and DPPH • scavenging capability to a certain extent can be used to explain the higher cold tolerance in the plantain, which would provide a theoretical guidance for bananas production and screening cold-resistant variety.

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Section: H 2 O 2 and Omentioning

confidence: 99%

The influence of low temperature on photosynthesis and antioxidant enzymes in sensitive banana and tolerant plantain (Musa sp.) cultivars

Zhang

Zhang²,

Chow

et al. 2011

Photosynt.

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“…Among metabolic adaptations, anthocyanin accumulation in shoots is a typical response to Pi deficiency [15] and it is likely to provide protection to nucleic acids and chloroplasts from UV and photo-inhibitory damage [130]. Microarray analysis of global gene expression during Pi deficiency revealed differential regulation of several genes involved in various steps of anthocyanin biosynthetic pathway leading to the synthesis of cyanidin, flavonoids, and pelargonidin [16].…”

Section: Metabolic Adaptationsmentioning

confidence: 99%

Transcriptional regulation of phosphate acquisition by higher plants

Jain

Nagarajan

Raghothama

2012

Cell. Mol. Life Sci.

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Phosphorus (P), an essential macronutrient required for plant growth and development, is often limiting in natural and agro-climatic environments. To cope with heterogeneous or low phosphate (Pi) availability, plants have evolved an array of adaptive responses facilitating optimal acquisition and distribution of Pi. The root system plays a pivotal role in Pi-deficiency-mediated adaptive responses that are regulated by a complex interplay of systemic and local Pi sensing. Cross-talk with sugar, phytohormones, and other nutrient signaling pathways further highlight the intricacies involved in maintaining Pi homeostasis. Transcriptional regulation of Pi-starvation responses is particularly intriguing and involves a host of transcription factors (TFs). Although PHR1 of Arabidopsis is an extensively studied MYB TF regulating subset of Pi-starvation responses, it is not induced during Pi deprivation. Genome-wide analyses of Arabidopsis have shown that low Pi stress triggers spatiotemporal expression of several genes encoding different TFs. Functional characterization of some of these TFs reveals their diverse roles in regulating root system architecture, and acquisition and utilization of Pi. Some of the TFs are also involved in phytohormone-mediated root responses to Pi starvation. The biological roles of these TFs in transcriptional regulation of Pi homeostasis in model plants Arabidopsis thaliana and Oryza sativa are presented in this review.

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“…Anthocyanins are a class of red/purple-colored flavonoids that can protect nucleic acids from UV damage and chloroplasts from photoinhibitory damage (Zeng et al, 2010). The up-regulation of highaffinity Pi transporters of the plasma membrane is another important component of the plant PSR (Fig.…”

Section: Phosphate Recycling Mobilization and Scavenging During Nutmentioning

confidence: 99%

Metabolic Adaptations of Phosphate-Starved Plants

2011

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Orthophosphate (Pi) is an essential macronutrient that plays a central role in virtually all major metabolic processes in plants, particularly photosynthesis and respiration. Many metabolites are Pi monoesters, whereas the phosphoanhydride bonds of compounds such as ATP function to transfer energy from the energyyielding process of photo-, oxidative, and substratelevel phosphorylation to the energy-dependent cellular processes of biosynthesis, ion pumping, and mechanical work. The massive use of Pi-containing fertilizers in agriculture demonstrates how the soluble Pi level of many soils is suboptimal for crop growth. Accessible reserves of rock phosphate-our major source of Pi fertilizers-are projected to be exhausted by the end of this century (Vance et al., 2003). The use of Pi fertilizers is also quite inefficient with less than 20% of applied Pi being absorbed by plants during their first growing season. The remaining Pi becomes immobile in the soil or leaches into and pollutes nearby surface waters. Agricultural Pi runoff is a primary factor in the eutrophication of lakes and marine estuaries, and has also resulted in blooms of toxic cyanobacteria. With the world's population continuing its rapid increase, mankind faces a daunting challenge to produce sufficient food crops in the face of dwindling supplies of Pi fertilizers. A more comprehensive understanding of the biochemical and physiological mechanisms of plant Pi uptake and use is leading to the development of rational strategies and molecular tools for engineering nutrient-efficient cultivars needed to reduce agriculture's overreliance on unsustainable Pi fertilizers. The aim of this Update article is to consider the influence of Pi nutrition on plant metabolism, with a focus on adaptive metabolic responses that serve to ameliorate the negative side effects of Pi deficiency. Examples of how metabolic Pi scavenging and recycling, and the unique flexibility of plant metabolism and bioenergetics may contribute to the survival of Pideficient (2Pi) plants are highlighted.

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Protective effect of supplemental anthocyanins on Arabidopsis leaves under high light

Cited by 72 publications

References 47 publications

The influence of low temperature on photosynthesis and antioxidant enzymes in sensitive banana and tolerant plantain (Musa sp.) cultivars

The influence of low temperature on photosynthesis and antioxidant enzymes in sensitive banana and tolerant plantain (Musa sp.) cultivars

Transcriptional regulation of phosphate acquisition by higher plants

Metabolic Adaptations of Phosphate-Starved Plants

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