Correlative associations of photosynthetic and rooting attributes of sesame: Drought-induced reversed associations are corrected upon salicylic acid exposure

Najafabadi, Maryam Yousefzadeh; Ehsanzadeh, Parviz

doi:10.1016/j.sajb.2021.06.044

Cited by 9 publications

(3 citation statements)

References 36 publications

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“…reported that increasing osmolytes, such as proline, is a nonenzymatic strategy to cope with stress injuries but the extent of increase in these osmolytes varies among genotypes(Yousefzadeh-Najafabadi & Ehsanzadeh, 2021). In this study, Fereydunshahr, Urmia, and Semirom genotypes indicated a significantly greater proline concentration than Bojnord genotype (Table2).…”

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confidence: 51%

“…In line with our findings, previous research has indicated that saline water disturbs the cell water status and ion balance, leading to reduced plant growth, SDW, LA, and RWC (Vafadar et al, 2020a). Photosynthetic alterations, such as a decrease in the F v /F m due to cold (Hu et al, 2016), drought (Yousefzadeh‐Najafabadi & Ehsanzadeh, 2021), and salinity stress (Gengmao et al, 2014), often result in the ultimate suppression of the plant growth and SDW. The suppressed LA, SFW, and SDW of the stressed plants of the examined genotypes (Tables 1 and 3) confirm the foregone proposal, as these responses were concomitant to decreases in their F v /F m (Table 2).…”

Section: Discussionmentioning

confidence: 99%

“…The increased proline concentration of the stressed D. kotschyi plants (Table 2) may have helped the plants to withstand the salt by both osmoregulative and antioxidative defenses. Previous studies have also reported that increasing osmolytes, such as proline, is a nonenzymatic strategy to cope with stress injuries but the extent of increase in these osmolytes varies among genotypes (Yousefzadeh‐Najafabadi & Ehsanzadeh, 2021). In this study, Fereydunshahr, Urmia, and Semirom genotypes indicated a significantly greater proline concentration than Bojnord genotype (Table 2).…”

Section: Discussionmentioning

confidence: 99%

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Synergistic effects of calcium and melatonin on physiological and phytochemical attributes of Dracocephalum kotschyi genotypes under salinity stress

Vafadar

Ehsanzadeh

2023

Physiologia Plantarum

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Since regulatory roles of calcium (Ca) and melatonin (MT) in physiological responses of plants to salinity stress are lacking, various Dracocephalum kotschyi genotypes (Bojnord, Urmia, Fereydunshahr, and Semirom) were pretreated with exogenous Ca (5 mM), MT (100 μM), and Ca + MT in the presence of salt (75 mM NaCl). In addition measuring the concentration of phenolic compounds by high-performance liquid chromatography (HPLC), histochemical evaluations of essential oils and phenolic compounds in glandular trichomes of leaf samples was performed by light microscope. Salt stress reduced shoot fresh (SFW) and dry weight (SDW), leaf area (LA), relative water content (RWC), and maximum efficiency of photosystem II (F v /F m ), but enhanced total phenolic content (TPC) and total flavonoids content (TFC), phenolic compounds concentrations, 2,2-diphenylpicrylhydrazyl (DPPH) radical scavenging capacity, electrolyte leakage (EL), proline, and hydrogen peroxide (H 2 O 2 ) concentrations, and Na + /K + and essential oils and TPC of the glandular trichomes of leaves in all D. kotschyi genotypes. Foliar spraying of Ca, MT, and particularly Ca + MT on D. kotschyi seedlings improved SFW, SDW, RWC, TPC, TFC, proline, and phenolic compounds concentrations, F v /F m , and DPPH radical scavenging capacity, but reduced H 2 O 2 , EL, and Na + /K + in the leaves and essential oils and TPC in the glandular trichomes of all genotypes under both nonstress and salt stress conditions. These findings indicate that the crosstalk between MT and Ca synergistically improves salt tolerance, TPC and TFC, phenolic compounds concentration, and essential oils accumulation in glandular trichomes of different D. kotschyi genotypes.

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confidence: 51%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Synergistic effects of calcium and melatonin on physiological and phytochemical attributes of Dracocephalum kotschyi genotypes under salinity stress

Vafadar

Ehsanzadeh

2023

Physiologia Plantarum

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Analysis of salinity‐induced metabolome changes in Indian mustard (Brassica juncea) roots and shoots: hydroponic versus microplot cultivation

Zayed,

Goyal,

Kiran

et al. 2024

J Sci Food Agric

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BackgroundBrassica juncea L. (family Brassicaceae) or Indian mustard is a fast‐growing oilseed crop. Climate changes mean that it is very important to evaluate the effects of salinity stress on B. juncea. The aim of this study was therefore to show the metabolic effect of salinity stress on shoots and roots using two cultivation models – hydroponic and microplot – in different cultivars, including RH‐725 and RH‐761. Salinity levels of 5, 7.5, and 10 dS m⁻¹ were investigated, and compared with a control of 0 dS m⁻¹, using untargeted metabolomics with gas chromatography–mass spectrometry (GC–MS) post‐silylation, focusing on metabolic markers such as proline and glycine‐betaine.ResultsA total of 56 metabolites were identified, with the most prevalent classes belonging to sugars (8), followed by organic acids (13), amino acids (11), and fatty acids/esters (11). Shoots were found to have a higher sugar content than roots. Increases in unsaturated fatty acids were also associated with salinity stress, compared with a decrease in saturated fatty acids. Absolute levels of proline and glycine‐betaine correlated with salinity stress, with the largest increases detected in shoots grown under hydroponic conditions, particularly for the RH‐761 cultivar. Multivariate data analyses revealed that roots were more affected than shoots, regardless of cultivation model.ConclusionThese findings might explain the different metabolic behavior of B. juncea's roots and shoots under various levels of salinity, associated with higher levels of free sugars in shoots and lipids in roots. © 2024 Society of Chemical Industry.

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Insights into the Drought Stress Tolerance Mechanisms of Sesame: The Queen of Oilseeds

Jeyaraj,

Beevy

2024

J Plant Growth Regul

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Correlative associations of photosynthetic and rooting attributes of sesame: Drought-induced reversed associations are corrected upon salicylic acid exposure

Cited by 9 publications

References 36 publications

Synergistic effects of calcium and melatonin on physiological and phytochemical attributes of Dracocephalum kotschyi genotypes under salinity stress

Synergistic effects of calcium and melatonin on physiological and phytochemical attributes of Dracocephalum kotschyi genotypes under salinity stress

Analysis of salinity‐induced metabolome changes in Indian mustard (Brassica juncea) roots and shoots: hydroponic versus microplot cultivation

Insights into the Drought Stress Tolerance Mechanisms of Sesame: The Queen of Oilseeds

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