Chloroplast‐located flavonoids can scavenge singlet oxygen

Agati, Giovanni; Matteini, Paolo; Goti, Andrea; Tattini, Massimiliano

doi:10.1111/j.1469-8137.2007.01986.x

Cited by 245 publications

(170 citation statements)

References 86 publications

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“…There are many reports which show that anthocyanins act as non-enzymatic antioxidant, thereby protecting the plants against ROS-induced oxidative damage under heat stress. Loss of membrane integrity in terms of lipid peroxidation has been reported in anthocyanin deficient mutant of Arabidopsis (Agati et al, 2007). In the present investigation, higher anthocyanins contents were observed in maize plants of EV-5098 after one hour of HS (Fig.…”

Section: Resultssupporting

confidence: 70%

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Hussain

Ashraf

Rasheed

et al. 2016

International Agrophysics

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A b s t r a c t. The present investigation was conducted to appraise the physiochemical adjustments in contrasting maize cultivars, namely, PakAfgoi (tolerant) and EV-5098 (sensitive) subjected to heat shock. Seven-day-old seedlings were exposed to heat shock for different time intervals (1, 3, 6, 24, 48 and 72 h) and data for various physiochemical attributes determined to appraise time course changes in maize. After 72 h of heat shock, the plants were grown under normal conditions for 5 d and data for different growth attributes and photosynthetic pigments recorded. Exposure to heat shock reduced growth and photosynthetic pigments in maize cultivars. The plants exposed to heat shock for up to 3 h recovered growth and photosynthetic pigments when stress was relieved. A time course rise in the relative membrane permeability, hydrogen peroxide (H 2 O 2 ) and malondialdehyde contents was recorded particularly in the EV-5098 indicating that heat shock-induced oxidative stress. Activities of different enzymatic antioxidants greatly altered due to heat shock. For instance, an increase in superoxide dismutase activity was recorded in both maize cultivars. The activity of ascorbate peroxidase was greater in Pak-Afgoi. However, the peroxidase and catalase activities were higher in plants of . Heat shock caused a significant rise in the proline and decline in the total free amino acids. Overall, the performance of Pak-Afgoi was better in terms of having lesser oxidative damage and greater cellular levels of proline. The results suggested that oxidative stress indicators (relative membrane permeability, H 2 O 2 and malondialdehyde) and proline can be used as markers for heat shock tolerant plants.

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Section: Resultssupporting

confidence: 70%

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Hussain

Ashraf

Rasheed

et al. 2016

International Agrophysics

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“…Furthermore, flavonoids act as nonenzymatic antioxidants and protect the plants against ROS-induced oxidative stress. Moreover, loss of membrane integrity in terms of lipid peroxidation has been reported in anthocyanin deficient mutant of Arabidopsis [47]. Therefore, anthocyanins are considered as a defensive yardstick against various abiotic stresses in plants [48].…”

Section: Resultsmentioning

confidence: 99%

Response of Maize Seedlings to Cadmium Application after Different Time Intervals

et al. 2013

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Present study was conducted to appraise the inhibitory effects of cadmium applied at different time intervals on various growth and biochemical parameters in two maize lines, Maize-TargetedMutagenesis 1 and 2 (MTM-1 and MTM-2). Twenty-day-old seedlings were exposed to 0, 3, 6, 9, and 12 mg CdCl 2 kg −1 sand. Both maize lines exhibited significant perturbations in important biochemical attributes being employed for screening the crops for cadmium tolerance. The results showed that a higher concentration of cadmium (12 mg CdCl 2 kg −1 ) considerably reduced the plant growth in line MTM-1 on the 5th, 10th, and 15th day after the treatment. In contrast, irrespective of exposure time, the plant biomass and leaf area did not show inhibitory effects of cadmium, specifically at 3 mg CdCl 2 kg −1 in line MTM-2. In addition, MTM-2 was found to be more tolerant than line MTM-1 in terms of lower levels of hydrogen peroxide (H2O2), malondialdehyde (MDA) contents, and relative membrane permeability (RMP). Moreover, H2O2, MDA, RMP, and anthocyanin increased at all levels of cadmium in both lines, but a significant decline was observed in photosynthetic pigments, total free amino acids, and proline contents in all treatments particularly on the 10th and 15th day after treatment.

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“…While there are six common anthocyanidins, there are more than 600 anthocyanins isolated from plants , 277 of which have been identified after 1992 (Andersen and Jordheim, 2006). In view of the chemical structure of anthocyanins and their histological localization, different protective functions have been hypothesized even though, concerning plant protection against abiotic stress, photoprotection from high light and UV-B (Agati et al, 2007;Tattini et al, 2014) and ROS scavenging ability are the most widely postulated as stress reliever (Gould et al, 2002;Kytridis and Manetas, 2006). On the other hand, defence against herbivores and attraction of pollinators (or preys in carnivorous plants) are the most proposed functions for anthocyanins in terms of relationships with biotic factors (Gould et al, 2009;Hughes and Lev-Yadun, 2015;Menzies et al, 2015).…”

Section: The Key Role Of Phenols In Terrestrial Plants Evolutionmentioning

confidence: 99%

Can Anthocyanins be Part of the Metal Homeostasis Network in Plant?

Landi¹

2015

American Journal of Agricultural and Biological Sciences

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Anthocyanins are a class of flavonoids with a high level of diversification and likely the most studied pathway of secondary metabolism in Plantae. Anthocyanins have raised a growing interest due to the huge variability of their chemical structures and the more new anthocyanins are isolated from plants, the more questions on their evolutionary and ecological meaning they raise. Antioxidant, photoprotection against high light and UV, defence against herbivores and pathogens, attraction of pollinator are only some proposed biological functions for those versatile compounds. Anthocyanins have also been found complexed with metal ions either in flower pigments (commelin and protocyanin) or in leaves and stems. Due to the potentiality of anthocyanins to chelate to metals, their involvement in the attenuation of metal toxicity has been recently proposed. Conversely, the ability of plants to remobilize metal ions from stored metal-anthocyanin complexes when plants experience a period of transient metal shortage has never been investigated before. The aim of this paper is to support the hypothesis that the anthocyanin-metal interactions might represent a further ecological role for these pigments and also that anthocyanins can be part of the complex network of metal homeostasis in plant.

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Chloroplast‐located flavonoids can scavenge singlet oxygen

Cited by 245 publications

References 86 publications

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Response of Maize Seedlings to Cadmium Application after Different Time Intervals

Can Anthocyanins be Part of the Metal Homeostasis Network in Plant?

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