Phenolic compounds as indicators of drought resistance in shrubs from Patagonian shrublands (Argentina)

Varela, M.; Arslan, İdris; Reginato, Mariana; Cenzano, Ana M.; Luna, María Virginia

doi:10.1016/j.plaphy.2016.03.014

Cited by 119 publications

(60 citation statements)

References 51 publications

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“…A similar trend between UV-B radiation or drought and high levels of TPC and antioxidant activity has been reported in other studies Gharibi et al, 2016). Varela et al (2016) showed that the accumulation of polyphenols is an important feature in the mechanisms employed by xerophytic species to avoid oxidative damage. Moreover, the effect of climate variations on TPC and antioxidant activity has been reported by Sivaci and Sökmen (2004).…”

Section: Discussionsupporting

confidence: 85%

“…The collection season was the unique factor influencing the TFC among the three factors assessed in this study for both parts of the plant. These results can be explained based on the accumulation of secondary metabolites, including phenolic compounds, and flavonoids, which can be used as a strategy for tolerance towards ultraviolet-B (UV-B) radiation and drought stress (Wolf et al, 2010;Varela et al, 2016), since this plant grows wild in unshaded habitats that are exposed to high levels of light and UV-B radiation intensities. It is well known that ultraviolet radiation is one of the main free radical generators, and plants synthesize secondary metabolites that act as UV-B absorbing compounds and accumulate in the vacuoles of epidermal cells.…”

Section: Discussionmentioning

confidence: 99%

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Effect of climate conditions on total phenolic content and antioxidant activity of Jatropha dioica Cerv. var. dioica

Gutiérrez-Tlahque

Aguirre-Mancilla

Raya-Pérez

et al. 2018

Ciencia e investigación agraria

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Fuentes. 2018. Effect of climate conditions on total phenolic content and antioxidant activity of Jatropha dioica Cerv. var. dioica. Cien. Inv. Agr. 45(1): 70-81. The aim of this work was to determine the antioxidant activity, total phenolic content (TPC) and total flavonoid content (TFC) in the rhizomes and stems of Jatropha dioica and their relation to collection season, collection location, extraction solvent and their interactions to understand the effect of climate conditions on the synthesis of the antioxidant compounds in J. dioica. Plants were collected during different seasons at two locations in Mexico. A 3-factorial experimental design was used for the stems and rhizomes, using the extraction solvent, collection location and season as sources of variation. A Tukey's test with a P≤0.05 significance level was used to perform the comparison of the means. Significant differences were found when comparing the three sources of variation separately for TPC and antioxidant activity in the stems and rhizomes. In terms of the interactions for the stems, there was a significant difference between the Morelos × 70% ethanol × dry interaction and Tetepango × water × rain interaction for the TPC and the antioxidant activity; however, no significant difference was found for the TFC. In terms of the rhizomes, a significant difference was found among the 4 variables analyzed. These results indicate that collection location, collection season and extraction solvent affect the TPC and antioxidant activity. In addition, the rhizomes presented higher antioxidant activity and TPC than that of the stems.

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Section: Discussionsupporting

confidence: 85%

Section: Discussionmentioning

confidence: 99%

Effect of climate conditions on total phenolic content and antioxidant activity of Jatropha dioica Cerv. var. dioica

Gutiérrez-Tlahque

Aguirre-Mancilla

Raya-Pérez

et al. 2018

Ciencia e investigación agraria

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“…In another case, phenolic also contributes to other compound forming to protect plant from stress, such as lignin (Liu et al, 2018). The high phenolic content in plants is commonly related to the level of plant tolerance to abiotic stress (Varela et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Biochemical Changes of Three Cocoa Clones (Theobroma cacao L.) Under Drought Stress

Zakariyya¹,

Indradewa²

2019

ipas

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Drought stress is a serious threat for cocoa production. One of the plant mechanisms to survive from the drought stress is through producing some biochemical compounds. The objective of this research was to know biochemical changes in three cocoa clones during drought stress. The research was conducted at the green house of Indonesian Coffee and Cocoa Research Institute from January – December 2017. The experiment was designed by using Randomized Complete Block Design (RCBD) with 2 factors and with 3 replications. The first factor was clones of scion that consisting KW 641, Sulawesi 1 and ICS 60 which each of its grafted to Scavina 6 clone as rootstock. The second factor was watering intervals which consisting; every 2 days / regularly watering (adequate of water), every 5 days (moderate drought), and every 8 days (severe drought). The result of this research showed that drought stress decreased chlorophyll content, increased hydrogen peroxide content (ROS), increased the activity of superoxide dismutation (SOD), increased ascorbic acid content, increased total phenolic content, and increased proline content. Sulawesi 1 and KW 641 clones showed lower hydrogen peroxide (ROS) content, while chlorophyll content, SOD activity, total phenolic content, ascorbic acid content, and proline content were higher compared with ICS 60 clone. It showed that Sulawesi 1 and KW 641 clones had more drought-resistance compared with ICS 60 clone.

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“…Phenolic compounds are considered to be indicators of drought resistance. For example, in Larrea divaricata and Lycium chilense , two Patagonian shrubs, phenolic compound production is a strategy used by these species living in extreme environments [ 40 ]. Many phenolics, potential PPO substrates, are needed in their reduced state as a form of plant protection from unfavorable environmental conditions.…”

Section: Discussionmentioning

confidence: 99%

Absence of Polyphenol Oxidase in Cynomorium coccineum, a Widespread Holoparasitic Plant

Padiglia

Zucca

Cannea

et al. 2020

Plants

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Polyphenol oxidase (PPO, E.C. 1.14.18.1) is a nearly ubiquitous enzyme that is widely distributed among organisms. Despite its widespread distribution, the role of PPO in plants has not been thoroughly elucidated. In this study, we report for the absence of PPO in Cynomorium coccineum, a holoparasitic plant adapted to withstand unfavorable climatic conditions, growing in Mediterranean countries and amply used in traditional medicine. The lack of PPO has been demonstrated by the absence of enzymatic activity with various substrates, by the lack of immunohistochemical detection of the enzyme, and by the absence of the PPO gene and, consequently, its expression. The results obtained in our work allow us to exclude the presence of the PPO activity (both latent and mature forms of the enzyme), as well as of one or more genes coding for PPO in C. coccineum. Finally, we discuss the possible significance of PPO deficiency in parasitic plants adapted to abiotic stress.

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Phenolic compounds as indicators of drought resistance in shrubs from Patagonian shrublands (Argentina)

Cited by 119 publications

References 51 publications

Effect of climate conditions on total phenolic content and antioxidant activity of Jatropha dioica Cerv. var. dioica

Effect of climate conditions on total phenolic content and antioxidant activity of Jatropha dioica Cerv. var. dioica

Biochemical Changes of Three Cocoa Clones (Theobroma cacao L.) Under Drought Stress

Absence of Polyphenol Oxidase in Cynomorium coccineum, a Widespread Holoparasitic Plant

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