Exogenous Melatonin and CaCl2 Alleviate Cold-Induced Oxidative Stress and Photosynthetic Inhibition in Cucumber Seedlings

Ma, Cheng; Pei, Zi-Qi; Bai, Xue; Lu, Shang-Huan; Su, Min; Kang, Xin; Gao, Huile; Wang, Juan; Zhang, Tengguo; Zheng, Sheng

doi:10.1007/s00344-022-10805-z

Cited by 6 publications

(4 citation statements)

References 65 publications

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“…Moreover, exogenously applied and endogenous MT upon stress (Xu et al, 2019) were associated with decreased H 2 O 2 concentrations (Liu et al, 2018) and EL (Zhang et al, 2020). Recently, Ma et al (2022) demonstrated that foliar spraying with 10 mM Ca and 100 μM MT improves the cold tolerance of cucumber seedlings by maintaining osmotic balance and redox homeostasis and improving photosynthetic efficiency. According to Pu et al (2021), the combined application of MT and Ca improved chilling stress tolerance in D. odorifera seedlings by regulating the synthesis of osmolytes, antioxidative activities, and production of phytohormones.…”

Section: Discussionmentioning

confidence: 99%

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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Section: Discussionmentioning

confidence: 99%

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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“…For plant vigor, there has been no report hitherto on the genomic regions associated with plant vigor in any yam species however, this study found 13 SNPs distributed across 11 chromosomes. Of these 13 loci, four SNP loci have been found to harbor genes (Cyt_P450; Vps16_C; FBPase_N; Sugar_P_trans_dom) that play essential role in enhancing vegetative growth in plants [ 13 ], viability of plant root [ 14 ] and enhancing root vigor for water uptake [ 15 ].…”

Section: Discussionmentioning

confidence: 99%

Association mapping in multiple yam species (Dioscorea spp.) of quantitative trait loci for yield-related traits

et al. 2023

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Background Yam (Dioscorea spp.) is multiple species with various ploidy level and considered as cash crop in many producing areas. Selection based phenotyping for yield and its related traits such as mosaic virus and anthracnose diseases resistance and plant vigor in multiple species of yam is lengthy however, marker information has proven to enhance selection efficiency. Methodology In this study, a panel of 182 yam accessions distributed across six yam species were assessed for diversity and marker-traits association study using SNP markers generated from Diversity Array Technology platform. For the traits association analysis, the relation matrix alongside the population structure were used as co-factor to avoid false discovery using Multiple random Mixed Linear Model (MrMLM) followed by gene annotation. Results Accessions performance were significantly different (p < 0.001) across all the traits with high broad-sense heritability (H2). Phenotypic and genotypic correlations showed positive relationships between yield and vigor but negative for yield and yam mosaic disease severity. Population structure revealed k = 6 as optimal clusters-based species. A total of 22 SNP markers were identified to be associated with yield, vigor, mosaic and anthracnose diseases resistance. Gene annotation for the significant SNP loci identified some putative genes associated with primary metabolism, pest and resistance to anthracnose disease, maintenance of NADPH in biosynthetic reaction especially those involving nitro-oxidative stress for resistance to mosaic virus, and seed development, photosynthesis, nutrition use efficiency, stress tolerance, vegetative and reproductive development for tuber yield. Conclusion This study provides valuable insights into the genetic control of plant vigor, anthracnose, mosaic virus resistance, and tuber yield in yam and thus, opens an avenue for developing additional genomic resources for markers-assisted selection focusing on multiple yam species.

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“…28,277 Recently, Combined application of MEL and Ca 2+ reduced ROS production under low temperature stress, while application of chelators/blockers of Ca 2+ signaling inhibited the alleviating effect of MEL on cucumber seedlings under low-temperature stress, indicating that Ca 2+ signaling (Ca 2+ /CDPKs and Ca 2+ /CaM) is necessary for regulating the growth of cucumber seedlings under low-temperature stress by MEL. 278 Moreover, some elements and complexity seem to coexist to regulate Ca 2+ signaling; for instance, exogenous Ca 2+ is crucial in regulating MEL induced endogenous hydrogen sulfide (H 2 S) accumulation and root activity, 279 indicating a plausible interaction of MEL with Ca 2+ signaling as a regulator of H 2 S metabolism during SG. Moreover, crosstalk of H 2 S with Ca 2+ has also been reported in regulating stress tolerance, AO activity, and acclimation in germinated seedlings.…”

Section: Crosstalk Between Mel and Ca 2+ Signalingmentioning

confidence: 99%

“…Recently a study showed that MEL application induced H 2 O 2 accumulation via the upregulation of melon respiratory burst oxidase homolog D ( CmRBOHD ) under ABA‐induced stress and both MEL and H 2 O 2 induced the accumulation of cytosolic Ca 2+ under ABA stress, thus suggesting MEL and ROS regulated Ca 2+ signaling in conferring abiotic stress tolerance 28,277 . Recently, Combined application of MEL and Ca 2+ reduced ROS production under low temperature stress, while application of chelators/blockers of Ca 2+ signaling inhibited the alleviating effect of MEL on cucumber seedlings under low‐temperature stress, indicating that Ca 2+ signaling (Ca 2+ /CDPKs and Ca 2+ /CaM) is necessary for regulating the growth of cucumber seedlings under low‐temperature stress by MEL 278 . Moreover, some elements and complexity seem to coexist to regulate Ca 2+ signaling; for instance, exogenous Ca 2+ is crucial in regulating MEL induced endogenous hydrogen sulfide (H 2 S) accumulation and root activity, 279 indicating a plausible interaction of MEL with Ca 2+ signaling as a regulator of H 2 S metabolism during SG.…”

Section: Mel‐induced Common Responses For Regulating Sg Under Abiotic...mentioning

confidence: 99%

Melatonin as a key regulator in seed germination under abiotic stress

Wang,

Tanveer,

Wang

et al. 2024

Journal of Pineal Research

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Seed germination (SG) is the first stage in a plant's life and has an immense importance in sustaining crop production. Abiotic stresses reduce SG by increasing the deterioration of seed quality, and reducing germination potential, and seed vigor. Thus, to achieve a sustainable level of crop yield, it is important to improve SG under abiotic stress conditions. Melatonin (MEL) is an important biomolecule that interplays in developmental processes and regulates many adaptive responses in plants, especially under abiotic stresses. Thus, this review specifically summarizes and discusses the mechanistic basis of MEL‐mediated SG under abiotic stresses. MEL regulates SG by regulating some stress‐specific responses and some common responses. For instance, MEL induced stress specific responses include the regulation of ionic homeostasis, and hydrolysis of storage proteins under salinity stress, regulation of C‐repeat binding factors signaling under cold stress, starch metabolism under high temperature and heavy metal stress, and activation of aquaporins and accumulation of osmolytes under drought stress. On other hand, MEL mediated regulation of gibberellins biosynthesis and abscisic acid catabolism, redox homeostasis, and Ca2+ signaling are amongst the common responses. Nonetheless factors such as endogenous MEL contents, plant species, and growth conditions also influence above‐mentioned responses. In conclusion, MEL regulates SG under abiotic stress conditions by interacting with different physiological mechanisms.

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Exogenous Melatonin and CaCl2 Alleviate Cold-Induced Oxidative Stress and Photosynthetic Inhibition in Cucumber Seedlings

Cited by 6 publications

References 65 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

Association mapping in multiple yam species (Dioscorea spp.) of quantitative trait loci for yield-related traits

Melatonin as a key regulator in seed germination under abiotic stress

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