Some ecophysiological characteristics of artà (Calligonum comosum Ľ Hérit) in response to drought stress

Ranjbarfordoei, A.; Vandamme, Peter; Samson, Roeland

doi:10.1007/s11632-013-0208-8

Cited by 8 publications

(7 citation statements)

References 27 publications

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“…Reduced water potential of plants under drought is a common physiological response to perform osmo-regulation and maintain plant water to enhance drought resistance (Ranjbarfordoei, Vandamme, & Samson, 2013) occurring in different studies on different species of oak (Aranda, Castro, Pardos, Gil, & Pardos, 2005;Capretti & Battisti, 2007;Cotrozzi et al, 2016). Moreover, after 3 months of stress, xylem water potential did not change under the impact of pathogens and well-watered seedlings, but it decreased under the combination of pathogen inoculation and drought.…”

Section: Discussionmentioning

confidence: 99%

“…This suggests that drought leads to further development and acceleration of negative effects of the charcoal disease on the host plant. Reduced water potential of plants under drought is a common physiological response to perform osmo-regulation and maintain plant water to enhance drought resistance (Ranjbarfordoei, Vandamme, & Samson, 2013) occurring in different studies on different species of oak (Aranda, Castro, Pardos, Gil, & Pardos, 2005;Capretti & Battisti, 2007;Cotrozzi et al, 2016). In addition, it is well known that there is a direct correlation between the pathogenicity of the charcoal disease and oak leaf water potential.…”

Section: Discussionmentioning

confidence: 99%

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Growth and physiological responses of Quercus brantii seedlings inoculated with Biscogniauxia mediterranea and Obolarina persica under drought stress

et al. 2017

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Charcoal canker of oak is a common disease in the western regions of Iran, which has widely spread due to climate change and increasing drought in recent years. Biscogniauxia mediterranea and Obolarina persica are known as two agents of oak charcoal canker in Zagros forests causing the dieback of oak trees. The effects of charcoal disease agent pathogens on the growth and physiological response of two-year-old seedlings of Quercus brantii were evaluated under drought stress in greenhouse over a period of nine months. Survival was 21.7% lower in seedlings inoculated with B. mediterranea subjected to drought stress compared with control treatment. The length of lesions on stems was 68% more under charcoal pathogens in drought stressed compared with the length of lesions caused by charcoal pathogens only. On the other hand, stem lesion length caused by B. mediterranea was 25% greater than those caused by O. persica. Some morphophysiological characteristics were affected by charcoal pathogens alone and/or in combination with drought. Diameter, height and biomass decreased the most in seedlings inoculated with charcoal pathogens under drought stress. Pathogenic agents alone and in combination with drought stress reduced photosynthetic rates, stomatal conductance, transpiration, the maximum Rubisco activity (V cmax ), maximum photochemical efficiency of photosystem II (F v /F m ) and xylem water potential. In general, drought increased the aggressiveness of fungus and intensification of their destructive effects in Quercus brantii. Moreover, there was no significant difference between the effect of B. mediterranea and O. persica on the morphophysiological parameters studied. How to cite this article: Ghanbary E, Tabari Kouchaksaraei M, Mirabolfathy M, Modarres Sanavi SAM, Rahaie M. Growth and physiological responses of Quercus brantii seedlings inoculated with Biscogniauxia mediterranea and Obolarina persica under drought stress. For Path. 2017;47:e12353. https://doi.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Growth and physiological responses of Quercus brantii seedlings inoculated with Biscogniauxia mediterranea and Obolarina persica under drought stress

et al. 2017

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“…The F 0 value increased due to impaired transferred excitation energy from the antenna to the reaction center (Schreiber et al, 1998). Thus, the increase in F 0 observed in Smirnova iranica plants studied may be associated with damage to the photosynthetic apparatus, such as inactivation reaction center of PSII (Ranjbarfordoei et al, 2013).…”

Section: Discussionmentioning

confidence: 95%

“…The tolerance of plants to drought stress depends on both intensity and duration of stress as well as the plant species' phenological stages (Parameshwarappa & Salimath, 2008). The effects of drought stress on CO 2 assimilation rate, transpiration rate, and water use efficiency has been investigated in many plant species (Pireivatlou et al, 2008;Ranjbarfordoei et al, 2013). Differences in photosynthetic pigments contents play important roles in light harvesting during water depletion (Farooq et al, 2009;Jaleel et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Gas Exchange and Chlorophyll Fluorescence’s Characteristics of Hyoscyamus muticus L. at Different Phenological Stages under Extreme Arid Environmental Conditions, South-Western Desert, Egypt

Radwan

Saleh

2022

Egypt. J. Bot.

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H YOSCYAMUS muticus L. is an adaptable plant of hyper arid environment. Changes in photosynthesis rate, transpiration, stomatal conductance, instantaneous water use efficiency, chlorophyll fluorescence and photosynthetic pigments characteristics were analyzed in the course of phenological stages including seedling, vegetative, flowering and fruiting to reveal the adaptive mechanisms of this species to withstand high irradiance during its life cycle. All measurements were taken under wide range of photosynthetically active radiation (PAR). H. muticus showed significant differences of physiological processes at different phenological stages, the highest rates of photosynthesis (5 and 5.23μmolm -2 s -1 ) was recorded at vegetative stage and the highest transpiration rate was recorded at relatively high PAR at seedling stage. Otherwise, lowest transpiration rates (0.18mmolm -2 s -1 , 0.19mmolm -2 s -1 and 0.197mmolm -2 s -1 were noticed at vegetative, flowering and fruiting stages, respectively) at highest PAR (2500μmolm -2 s -1 ). Stomatal conductance limitations in seedling, flowering and fruiting stages of H. muticus exhibited reductions of photosynthesis rate (Pn), transpiration rate (E) and instantaneous water use efficiency (WUE) in response to PAR increments. The plant fluoresces behaviour recorded significant increments and decrements in minimal fluorescence from dark-adapted leaf (F 0 ) and maximal fluorescence from dark-adapted leaf (F m ) respectively, and significant declines in the ratio of PSII photochemistry maximum quantum efficiency to quantum yield (F v /F m ) (0.75200, 0.75167, 0.68833 and 0.4800) along with progressing phenological stages. In parallel with the later ratio decline, there was a significant decrement in chlorophyll a, chlorophyll b, chlorophyll (a+b) and carotene H. muticus has adapted different adaptive mechanisms to thrive the combination of water scarcity and high irradiance along its life cycle in hyper arid environment.

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“…[20] Dose-Response plot:-This graph shows the probabilities, ranging from 0 to 1, and the corresponding dose. Two additional curves represent the 95% confidence interval for the dose.…”

Section: Clinical Signs Of Toxicity Recorded During Experiment:-mentioning

confidence: 99%

QUANTIFICATION OF QUERCETIN, CATECHIN, AND β-SITOSTEROL, ANTIOXIDANT AND ACUTE TOXIC EFFECTS OF CalligonumcomosumL`Her DIFFERENT PARTS EXTRACT

Kiani¹,

Lamardi²,

Ostad³

et al. 2016

IJAR

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CalligonumcomosumL`Her (C. comosum) belongs to the polygonaceae family and is known as Escanbil in Iran. The objective of this study was to assess quantification of phenolic antioxidants quercetin, catechin, and β-sitosterol, antioxidant, and toxic effects of ethyl acetate fraction from different parts including root, fruit, stems, aerial (leaves and flowers) and the whole parts ofC. comosum.HPLC with UV detection was employed for quantification of quercetin, catechin, and β-Sitosterol present in different parts of C. comosum. Antioxidant activity of all samples was evaluated using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) method. Toxicity of extracts was assayed by brine shrimp, MTT, and animal models.HPLC analysis of quercetin showed high levels of this compound in fruits (2/7 ± 0.25 mg/g)and aerial parts (2/1 ± 0.14 mg/g) as well as, catechin in the plant root (83/9 ± 9.85mg/g) of C. comosum. Aerial parts and then the whole plant extract also containing β-sitostrol in the highest amount. Comparison of the DPPH results showed that the aerial part of the plant has more antioxidant potential. The brine shrimp lethality bioassay showed that the fruit extract with LC50 126.8 µg/mL was more toxic. The results of in vivoacute toxicity evaluation showed moderately toxicity of the ethyl acetate fraction from aerial part of the C. comusom extract. These findings can help clinicians for selection the best part with lowest side effect in future clinical trials.

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Some ecophysiological characteristics of artà (Calligonum comosum Ľ Hérit) in response to drought stress

Cited by 8 publications

References 27 publications

Growth and physiological responses of Quercus brantii seedlings inoculated with Biscogniauxia mediterranea and Obolarina persica under drought stress

Growth and physiological responses of Quercus brantii seedlings inoculated with Biscogniauxia mediterranea and Obolarina persica under drought stress

Gas Exchange and Chlorophyll Fluorescence’s Characteristics of Hyoscyamus muticus L. at Different Phenological Stages under Extreme Arid Environmental Conditions, South-Western Desert, Egypt

QUANTIFICATION OF QUERCETIN, CATECHIN, AND β-SITOSTEROL, ANTIOXIDANT AND ACUTE TOXIC EFFECTS OF CalligonumcomosumL`Her DIFFERENT PARTS EXTRACT

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