The antioxidative role of anthocyanins in Arabidopsis under high-irradiance

Zhang, Q.; Su, Lihe; Chen, J. -W.; Zeng, Xueqin; Sun, B. -Y.; Peng, Chang-Lian

doi:10.1007/s10535-011-0218-0

Cited by 25 publications

(33 citation statements)

References 51 publications

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“…Additionally, previous studies reported that expression of genes that encode ROS scavengers (e.g. OsMT2b, superoxide dismutase, glutathione S ‐transferase and peroxidases) during the oxidative burst phase in cells was downregulated in response to environmental stimuli (Wang et al ., ; Wong et al ., ; Zhang et al ., ). In the current study, we observed that OsNAC2 promotes ROS biosynthesis by inducing the expression of several NADPH oxidase genes, including OsrbohA , OsrbohB , OsrbohD and OsrbohE (Figure (b)).…”

Section: Discussionmentioning

confidence: 97%

OsNAC2 positively affects salt‐induced cell death and binds to the OsAP37 and OsCOX11 promoters

et al. 2018

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Plant development and adaptation to environmental stresses are intimately associated with programmed cell death (PCD). Although some of the mechanisms regulating PCD [e.g., accumulation of reactive oxygen species (ROS)] are common among responses to different abiotic stresses, the pathways mediating salt-induced PCD remain largely uncharacterized. Here we report that overexpression of OsNAC2, which encodes a plant-specific transcription factor, promotes salt-induced cell death accompanied by the loss of plasma membrane integrity, nuclear DNA fragmentation, and changes to caspase-like activity. In OsNAC2-knockdown lines, cell death was markedly decreased in response to severe salt stress. Additionally, OsNAC2 expression was enhanced in rice seedlings exposed to a high NaCl concentration. Moreover, the results of quantitative real-time PCR, chromatin immunoprecipitation, dual-luciferase, and yeast one-hybrid assays indicated that OsNAC2 targeted genes that encoded an ROS scavenger (OsCOX11) and a caspase-like protease (OsAP37). Furthermore, K -efflux channels (OsGORK and OsSKOR) were clearly activated by OsNAC2. Overall, our results suggested that OsNAC2 accelerates NaCl-induced PCD and provide new insights into the mechanisms that affect ROS accumulation, plant caspase-like activity, and K efflux.

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Section: Discussionmentioning

confidence: 97%

OsNAC2 positively affects salt‐induced cell death and binds to the OsAP37 and OsCOX11 promoters

et al. 2018

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“…In some fruit crops CHS elements are essential to be identified. Several studies, have identified the expression of the CHS in tissue was passively linked with fruit coloring as demonstrated in grape [71], apple [73], bilberry [24], citrus [75], pear [8] etc. ; and was up-regulated by low temperature [4,52], light [50], and UV-B [51], and was unchanged or inhibited with the ethanol application [84].…”

Section: Anthocyanin Biosynthetic Pathwaymentioning

confidence: 99%

“…These pigments are formed in relation to UV spotlight, and shelter the DNA from injure by ultraviolet radiation of DNA double helix paired strands of inherited substances in cells and become cross-linked and also prevents cell multiplication and other pivotal cellular mechanism like protein synthesis [1,7,8].…”

Section: Introductionmentioning

confidence: 99%

Naturally Occurring Anthocyanin, Structure, Functions and Biosynthetic Pathway in Fruit Plants

Pervaiz¹,

Jiu²,

Faghihi³

et al. 2017

J Plant Biochem Physiol

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Anthocyanins are naturally occurring compounds, member of the flavonoid groups of photochemical, involved in defense against the damaging effects of UV irradiation in plants and protect from many oxidants. The anthocyanins, group of pigments are relatively small and diverse flavonoid family in nature, and responsible for the attractive colors, red and purple to blue in many plants. Presence of pigments in flowers and fruits seems to provide attraction for pollination and aiding seed distribution, it also provides antiviral and antimicrobial activities, however their occurrence in the vacuoles remains ambiguous. During the last decades, anthocyanin gene expression and many structural genes encoding enzymes has been extensively studied in fruits, flowers and leaves in many plants.In addition, the genetic regulating mechanism, their biosynthesis and other factors involved are well described. The biosynthesis pathway of anthocyanin is a complex with diverse branches responsible to produce variety of metabolites. In general Anthocyanins, production through the flavonoid path, are a class of vital phenolic compounds. Over six thousand diverse anthocyanins have been reported from various species. So far, the potential health benefits of anthocyanins have been reported in the contexts of their antioxidant properties. Anthocyanins are also extensively studied for their several positive effects on body. Based on these facts, the present review briefly summarizes recent advances, highlighting the importance of biosynthetic pathway of anthocyanins, thus will serve to encourage advance investigation in this field.

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“…The accumulation of flavonoids and related phenolics has often been proposed as an adaptive mechanism to prevent radiation from reaching the mesophyll, and anthocyanins have been found to mitigate photooxidative injury in leaves by shielding the chloroplasts from excess light and by scavenging ROS (Zhang et al 2012 ). It has been shown that anthocyanin acts as a protective agent preventing high levels of solar radiation from damaging the photosynthetic machinery.…”

Section: Cl-cont Control Plants Cl-smm Control Light and Smm Treatmementioning

confidence: 99%

Interactions of S-methylmethionine and UV-B can modify the defence mechanisms induced in maize

et al. 2015

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The antioxidative role of anthocyanins in Arabidopsis under high-irradiance

Cited by 25 publications

References 51 publications

OsNAC2 positively affects salt‐induced cell death and binds to the OsAP37 and OsCOX11 promoters

OsNAC2 positively affects salt‐induced cell death and binds to the OsAP37 and OsCOX11 promoters

Naturally Occurring Anthocyanin, Structure, Functions and Biosynthetic Pathway in Fruit Plants

Interactions of S-methylmethionine and UV-B can modify the defence mechanisms induced in maize

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