Exogenous melatonin improves growth and photosynthetic capacity of cucumber under salinity-induced stress

Title:

Exogenous melatonin improves growth and photosynthetic capacity of cucumber under salinity-induced stress

Creator:

Wang, L. Y., Liu, J. L., Sun, Y., and Wang, W. X.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:df05bc9d-525a-4132-8d51-0a72396ff579
uuid:df05bc9d-525a-4132-8d51-0a72396ff579
issn:0300-3604
doi:10.1007/s11099-015-0140-3

Subject:

fotosyntéza, photosynthesis, antioxidant enzymes, chlorophyll fluorescence, gas exchange, growth analysis, melatonin, salt tolerance, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Melatonin mediates many physiological processes in animals and plants. To examine the potential roles of melatonin in salinity tolerance, we investigated the effects of exogenous melatonin on growth and antioxidant system in cucumber under 200 mM NaCl stress conditions. The results showed that the melatonin-treated plants significantly increased growth mass and antioxidant protection. Under salinity stress, the addition of melatonin effectively alleviated the decrease in the net photosynthetic rate, the maximum quantum efficiency of PSII, and the total chlorophyll content. Our data also suggested that melatonin and the resistance of plants exhibited a concentration effect. The application of 50-150 μM melatonin significantly improved the photosynthetic capacity. Additionally, the pretreatment with melatonin reduced the oxidative damage under salinity stress by scavenging directly H2O2 or enhancing activity of antioxidant enzymes (including superoxide dismutase, peroxidase, catalase, ascorbate peroxidase) and concentrations of antioxidants (ascorbic acid and glutathione). Therefore, the melatonin-treated plants could effectively enhance their salinity tolerance., L. Y. Wang, J. L. Liu, W. X. Wang, Y. Sun., and Obsahuje seznam literatury

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

19-27

Source:

Photosynthetica | 2016 Volume:54 | Number:1

Harvested from:

CDK

Metadata only:

false