Effects of NaCl stress on the growth and photosynthetic characteristics of Ulmus pumila L. seedlings in sand culture

Title:

Effects of NaCl stress on the growth and photosynthetic characteristics of Ulmus pumila L. seedlings in sand culture

Creator:

Feng, Z. T., Deng, Y. Q., Fan, H., Sun, Q. J., Sui, N., and Wang, B. S.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:5d8b95c2-8c44-49f8-839a-d5ced7f25954
uuid:5d8b95c2-8c44-49f8-839a-d5ced7f25954
issn:0300-3604
doi:10.1007/s11099-014-0032-y

Subject:

fotosyntéza, jilm, chlorid sodný, photosynthesis, Ulmus, sodium chloride, chlorophyll fluorescence, gas exchange, elm, growth, salt stress, sodium ion, NaCl, Ulmus pumila, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

The effects of NaCl stress on the growth and photosynthetic characters of Ulmus pumila L. seedlings were investigated under sand culture condition. With increasing NaCl concentration, main stem height, branch number, leaf number, and leaf area declined, while Na+ content and the Na+/K+ ratio in both expanded and expanding leaves increased. Na+ content was significantly higher in expanded leaves than in those just expanding. Chlorophyll (Chl) a and Chl b contents declined as NaCl concentration increased. The net photosynthetic rate, intercellular CO2 concentration, stomatal conductance, and transpiration rate also declined, but stomatal limitation value increased as NaCl concentration increased. Both the maximal quantum yield of PSII photochemistry and the effective quantum yield of PSII photochemistry declined as NaCl concentration rose. These results suggest that the accumulation of Na+ in already expanded leaves might reduce damage to the expanding leaves and help U. pumila endure high salinity. The reduced photosynthesis in response to salt stress was mainly caused by stomatal limitation., Z. T. Feng, Y. Q. Deng, H. Fan, Q. J. Sun, N. Sui, B. S. Wang., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

313-320

Source:

Photosynthetica | 2014 Volume:52 | Number:2

Harvested from:

CDK

Metadata only:

false