Exogenous Melatonin Alleviates Heat‐Induced Oxidative Damage in Strawberry (Fragaria × ananassa Duch. cv. Ventana) Plant

Manafi, Hamideh; Baninasab, Bahram; Gholami, Mahdiyeh; Talebi, Majid; Khanizadeh, Shahrokh

doi:10.1007/s00344-020-10279-x

Cited by 39 publications

(24 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Free proline in plants can serve as a cytoplasmic osmotic regulator [31]. Under high temperature, the proline content of strawberry leaves was shown to be significantly higher than that of the control [25], and this result was also observed in P. ostii. Taken together, these results indicated that P. ostii could maintain a proper balance of cell osmosis by increasing the concentration of proline, so as to resist stress injury.…”

Section: Discussionmentioning

confidence: 74%

See 1 more Smart Citation

Effects of High-Temperature Stress on Photosynthetic Characteristics and Antioxidant Enzyme System of Paeonia ostii

Wang¹,

Fang²,

Zhao³

et al. 2022

Phyton

View full text Add to dashboard Cite

Paeonia ostii is an economically important oil crop, which has been widely cultivated in the middle and lower reaches of the Yangtze River in China in recent years. Although P. ostii is highly adaptable to the environment, the prolonged high summer temperature in this region severely inhibits its growth, which adversely affects seed yield and quality. In this study, P. ostii plants were subjected to 20°C/15°C (day/night) and 40°C/35°C (day/night) temperatures for 15 days. The changes in physiological and biochemical indicators of P. ostii under high-temperature stress were initially investigated. The results showed that with the deepening of leaf etiolation, chlorophyll a and chlorophyll b concentration, carotenoid concentration, Soil Plant Analysis Development (SPAD) values and leaf relative water content decreased significantly, while both relative electrical conductivity (REC) and free proline concentration showed an upward trend. Meanwhile, the continuous accumulation of reactive oxygen species (ROS) in P. ostii plants, led to an increased activity of antioxidant enzymes including superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX). Moreover, with the extension of the high-temperature treatment, the anatomical structures of P. ostii were destroyed, resulting in a decreased photochemical efficiency of the photosystem II (PSII) reaction center and photosynthesis was inhibited. Taken together, these results provide reference values for understanding the physiological response of P. ostii to hightemperature stress and establish a foundation for further research on the relevant underlying molecular mechanisms.

show abstract

Section: Discussionmentioning

confidence: 74%

“…Water content reflects the vigour of plant biological activity. Reduction in leaf water content represents a loss of turgor with limited water availability for cell expansion [25]. These phenomena are described in depth in studies on lentil [26] and grapevine [27].…”

Section: Discussionmentioning

confidence: 99%

Effects of High-Temperature Stress on Photosynthetic Characteristics and Antioxidant Enzyme System of Paeonia ostii

Wang¹,

Fang²,

Zhao³

et al. 2022

Phyton

View full text Add to dashboard Cite

show abstract

“…It also enhanced the activities of antioxidant enzymes, protein, and lipid molecules and favored the lower production of H 2 O 2 and MDA 74 Strawberry ( Fragaria × ananassa Duch.) 35°C and 40°C 0, 50, and 100 μM MET treatment decreased heat injury symptoms and induced antioxidant mechanisms, also up-regulated the expression of defense HSF ( FaTHsfA2a, FaTHSFB1a ) and HSP ( HSP90 ) genes 75 Rice ( Oryza sativa L.) 38 ◦C 0, 20, 100, 500 µM MET treatment improved the heat tolerance of rice seeds by enhancing the activity of the antioxidant enzymes and significantly reducing the MDA content 76 Tomato ( Solanum lycopersicum L.) 40°C, 7 d 50 mM MET alleviated the oxidative damage of PSII by balancing the electron transfer of the donor side, reaction center, and receptor side 77 Rice ( Oryza sativa L.) 38°C/28°C 250 mL of 200 μmol L −1 MET improved the stress resistance by enhancing the scavenging efficiency of ROS and improved the leaf photosynthetic and heat-resistance properties. 78 Abbreviations: Abscisic acid (ABA); ascorbate peroxidase (APX); cold stress (CS); cytokinin (CK); chlorophyll (Chl); catalase (CAT); glutathione reductase (GSSG-R); gibberellic acid (GA3); heat stress (HS); hydrogen peroxide (H 2 O 2 ); heat shock proteins (HSPs); indole-3-acetic acid (IAA); malondialdehyde (MDA); melatonin (MET); peroxidase (POD); reactive oxygen species (ROS); superoxide dismutase (SOD); zeatin (ZT).…”

Section: Potential Of Exogenous Melatonin In Managing Temperature Str...mentioning

confidence: 95%

Melatonin-mediated temperature stress tolerance in plants

et al. 2022

View full text Add to dashboard Cite

Global climate changes cause extreme temperatures and a significant reduction in crop production, leading to food insecurity worldwide. Temperature extremes (including both heat and cold stresses) is one of the most limiting factors in plant growth and development and severely affect plant physiology, biochemical, and molecular processes. Biostimulants like melatonin (MET) have a multifunctional role that acts as a “defense molecule” to safeguard plants against the noxious effects of temperature stress. MET treatment improves plant growth and temperature tolerance by improving several defense mechanisms. Current research also suggests that MET interacts with other molecules, like phytohormones and gaseous molecules, which greatly supports plant adaptation to temperature stress. Genetic engineering via overexpression or CRISPR/Cas system of MET biosynthetic genes uplifts the MET levels in transgenic plants and enhances temperature stress tolerance. This review highlights the critical role of MET in plant production and tolerance against temperature stress. We have documented how MET interacts with other molecules to alleviate temperature stress. MET-mediated molecular breeding would be great potential in helping the adverse effects of temperature stress by creating transgenic plants.

show abstract

“…It can protect plants from extreme temperatures [ 27 , 28 ], drought [ 29 ], salinity [ 30 ], and heavy metal exposure [ 31 ]. A study on strawberry plants showed that spraying exogenous MT can upregulate the expression of the HSF genes and protect strawberries from heat damage by inducing the HSFA2a , HSFB1a , and HSP90 gene expressions [ 32 ]. In Arabidopsis , MT triggered the heat-response genes HSA32 , HSFA2 , HSP90 , and HSP101 , strengthening heat tolerance.…”

Section: Introductionmentioning

confidence: 99%

Comparative Physiological and Transcriptomic Analyses of Improved Heat Stress Tolerance in Celery (Apium Graveolens L.) Caused by Exogenous Melatonin

Zhou

et al. 2022

IJMS

View full text Add to dashboard Cite

Melatonin (MT) is crucial in plant growth, development, and response to stress. Celery is a vegetable that grows in a cool climate, and a hot climate can deteriorate its growth, yield, and quality. This study investigates the effect of exogenous melatonin on celery physiology. Transcriptional levels were analyzed by spraying celery with exogenous MT before exposing it to high temperatures. The regulatory mechanism of exogenous MT-mediated heat tolerance was examined. The results show that the exogenous MT reduced the thermal damage state of celery seedlings, as well as the malondialdehyde (MDA) content and relative conductivity (REC), increasing the oxidase activity, the osmotic regulatory substances, and chlorophyll, enhancing the leaf transpiration and the light energy utilization efficiency. We examined the mechanism of exogenous MT in mitigating high-temperature damage using the transcriptome sequencing method. A total of 134 genes were expressed differently at high temperature in the celery treated with MT compared with the untreated celery. Functional annotation analysis revealed that the differentially expressed genes were abundant in the “pyruvate metabolism” pathway and the “peroxidase activity” pathway. According to the pathway-based gene expression analysis, exogenous MT can inhibit the upregulation of pyruvate synthesis genes and the downregulation of pyruvate consumption genes, preventing the accumulated pyruvate from rapidly upregulating the expression of peroxidase genes, and thereby enhancing peroxidase activity. RT-qPCR verification showed a rising encoding peroxidase gene expression under MT treatment. The gene expression pattern involved in pyruvate anabolism and metabolism agreed with the abundant transcriptome expression, validating the physiological index results. These results indicate that the application of exogenous MT to celery significantly enhances the ability of plant to remove reactive oxygen species (ROS) in response to heat stress, thereby improving the ability of plant to resist heat stress. The results of this study provide a theoretical basis for the use of MT to alleviate the damage caused by heat stress in plant growth and development.

show abstract

Exogenous Melatonin Alleviates Heat‐Induced Oxidative Damage in Strawberry (Fragaria × ananassa Duch. cv. Ventana) Plant

Cited by 39 publications

References 64 publications

Effects of High-Temperature Stress on Photosynthetic Characteristics and Antioxidant Enzyme System of Paeonia ostii

Effects of High-Temperature Stress on Photosynthetic Characteristics and Antioxidant Enzyme System of Paeonia ostii

Melatonin-mediated temperature stress tolerance in plants

Comparative Physiological and Transcriptomic Analyses of Improved Heat Stress Tolerance in Celery (Apium Graveolens L.) Caused by Exogenous Melatonin

Contact Info

Product

Resources

About