Differential responses of chicory ecotypes exposed to drought stress in relation to enzymatic and non-enzymatic antioxidants as well as ABA concentration

Ghanaatiyan, Kimiya; Sadeghi, Hossein

doi:10.1080/14620316.2017.1286235

Cited by 9 publications

(12 citation statements)

References 34 publications

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“…On the contrary, SDS induced a strong significant increase in the hormone concentration already at day 7 (~14 fold more than WW and MDS) until the complete plant senescence (~39 fold more than WW and MDS). Endogenous ABA plays an important role in drought adaptation and, in S. dolomitica rapidly increased under severe water shortage conditions, enhancing drought tolerance as was observed in leaves of Cichorium intybus treated with similar severe drought conditions (Ghanaatiyan and Sadeghi, 2017).…”

Section: Endogenous Aba Contentmentioning

confidence: 79%

Drought stress adaptation modulates plant secondary metabolite production in Salvia dolomitica Codd

Caser

Chitarra

D’Angiolillo

et al. 2019

Industrial Crops and Products

100

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Sages are important medicinal and aromatic plants. While Salvia officinalis and S. miltiorrhiza have been widely studied, poor information are available on S. dolomitica which is recently addressing attention for its antiplasmodial and anti-inflammatory properties. The current study investigated the performances and the metabolic profile of this minor species in response to drought stress. Plants were exposed to three treatments: control, moderate drought stress, or severe drought stress.Changes in growth and ecophysiological traits, in active and volatile compounds, and essential oils production were determined. As the terpenoids are the most representative class of secondary metabolites, the gene expression of key enzymes of terpenoid biosynthesis has been also investigated. Moderate drought induced a drop of leaf water potential, growth, and stomatal conductance, while an increase of deyhdrin expression level. However, serious stress symptoms such as decrease of net photosynthesis and transpiration rate and increase of endogenous abscisic acid were observed only in severe drought stressed plants. Both drought stress conditions lead to modulate the expression of some genes involved in BVOCs and EOs biosynthesis and the metabolic profile. In particular, drought induced an increase of sesquiterpenes, a class of terpenoids with high importance in food, cosmetic and pharmaceutical industry. Thus, we can speculate that moderate drought stress, in addition to allowing water savings during cultivation, can lead to an improvement in the production of secondary metabolites in S. dolomitica.

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Section: Endogenous Aba Contentmentioning

confidence: 79%

Drought stress adaptation modulates plant secondary metabolite production in Salvia dolomitica Codd

Caser

Chitarra

D’Angiolillo

et al. 2019

Industrial Crops and Products

100

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“…Increase of: proline, soluble sugars and MDA content; SOD, POD and CAT activity at beginning of stress [39] On the other hand, a different response towards drought stress was observed in four common chicory (Cichorium intybus L.) ecotypes grown under greenhouse conditions and subjected to stress drought (80, 60 and 40% irrigation, in relation to field capacity) for 60 days [61]. The results showed that the Siyah Shiraz ecotype had a better defense system than the other ecotypes, in terms of antioxidant enzymes, proline and ABA content.…”

Section: Horticultural Species Drought Treatment Growing Conditions C...mentioning

confidence: 99%

“…SC124, SC205, GR4, and RS01 50% and 20% of field capacity Glasshouse Reduction of: RWC and chlorophyll content increase of: H 2 O 2 ; malondialdehyde (MDA); ascorbic acid; glutathione; SOD and CAT activity; total phenols. Overexpression of Mn-SOD, CAT and GR genes [35] Common chicory (Cichorium intybus L.) 80%, 60%, 40% of field capacity Greenhouse Increase of: SOD, POD, CAT activity; proline and ascorbic acid content; abscissic acid content in leaves [61] Eggplant (Solanum melongena L.) Seven levels of irrigation Field…”

Section: Horticultural Species Drought Treatment Growing Conditions C...mentioning

confidence: 99%

Response and Defence Mechanisms of Vegetable Crops against Drought, Heat and Salinity Stress

2021

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Environmental pollution, increasing CO2 atmospheric levels and the greenhouse effect are closely associated with the ongoing climate change and the extreme climatic events we are witnessing all over the Earth. Drought, high temperature and salinity are among the main environmental stresses that negatively affect the yield of numerous crops, challenging the world food safety. These effects are more profound in vegetable crops which are generally more susceptible to climate change than field or tree crops. The response to single or combined environmental stressors involves various changes in plant morphology and physiology or in molecular processes. Knowing the mechanisms behind these responses may help towards the creation of more tolerant genotypes in the long-term. However, the imediacy of the problem requires urgently short-term measures such as the use of eco-sustainable agricultural practices which can alleviate the negative effects of environmental pollution and allow vegetable crops to adapt to adverse climatic conditions. In this review, the main abiotic stressors were examined, namely drought, heat and salinity stress, focusing on the mechanisms involved in the most common vegetable crops responses. Moreover, the use of eco-sustainable cultural techniques, such as biostimulants, grafting and genomic sequencing techniques, to increase the quality of tomato crop under adverse environmental conditions are also presented.

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“…Similar to chlorophylls, the highest proline content and four antioxidant enzymes activity was observed at 75% FC and the salt ratio of 1:3 to 1:5 (CaCl 2 : NaCl). The higher accumulation of proline can be considered as an important factor of resistance to environmental stresses, which has been reported in numerous studies (Filippou et al, 2014;Fakhari and Sadeghi., 2016;Ghanaatiyan and Sadeghi, 2017).…”

Section: Discussionmentioning

confidence: 99%

A comprehensive model for predicting the defense system development of the most important plant: a novel approach to assess the physiological indices

Afzali

Sadeghi

Taban

2023

Preprint

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Caper is a multi-purpose halophytic plant growing in semi-arid or arid environment. The present study aims to evaluate the effect of different salt ratios of CaCl2 to NaCl on antioxidant defense system, photosynthesis pigments and morphophysiological parameters of caper under drought stress. Predictive regression modeling, principal component analysis (PCA), Pearson's correlation and path analysis were implanted to explore the possible relationships among inter correlated variables and understanding the possible mechanisms. Based on the PCA results, caper had a highest shoot and leaves growth, content of pigments, proline and antioxidant enzymes (peroxidase, superoxide dismutase, catalase, and ascorbate peroxidase) activity and the lower leaf tissue density at the salt ratio of 1:3 (CaCl2:NaCl) under 75% FC. Predictive equation models with high significant R2 were developed for the estimation of antioxidant enzymes activity and proline content (>0.94) as well as pigments (>0.58) were developed. Path analysis studies indicated that proline is the most important regressor (significant positive effect) in four antioxidant enzymes activities while in the case of chlorophylls, leaf tissue density was the most effective variable (significant negative). It was found that caper has a better performance under moderate to high NaCl-salt stress and mild droght stress. Moreover, the network of inter correlated variables revealed that there is a close relationship between antioxidant defense system, pigments and morpholoigical parameters of caper under stress condition. The results of this study would be a useful guide for caper producers as well as plant ecophysiological researchers.

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Differential responses of chicory ecotypes exposed to drought stress in relation to enzymatic and non-enzymatic antioxidants as well as ABA concentration

Cited by 9 publications

References 34 publications

Drought stress adaptation modulates plant secondary metabolite production in Salvia dolomitica Codd

Drought stress adaptation modulates plant secondary metabolite production in Salvia dolomitica Codd

Response and Defence Mechanisms of Vegetable Crops against Drought, Heat and Salinity Stress

A comprehensive model for predicting the defense system development of the most important plant: a novel approach to assess the physiological indices

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