Natural and commercial Salix clones differ in their ecophysiological response to Zn stress

Title:

Natural and commercial Salix clones differ in their ecophysiological response to Zn stress

Creator:

Bernardini, A., Salvatori, E., Di Re, S., Fusaro, L., Nervo, G., and Manes, F.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:51157170-5b7e-44c1-8db1-e516c104f386
uuid:51157170-5b7e-44c1-8db1-e516c104f386
issn:0300-3604
doi:10.1007/s11099-015-0155-9

Subject:

photosynthesis, chlorophyll a fluorescence, gas exchange, stress response, willow, zinc, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Natural and commercial Salix clones differ in their ecophysiological response to Zn stress This study was carried out to determine the effect of different zinc concentrations on the ecophysiological response of Salix clones: four commercial clones (“1962”, “1968”, “Drago”, and “Levante”) selected for short rotation coppice, and one natural clone, “Sacco”, obtained from a contaminated area. Gas exchanges, chlorophyll a fluorescence (JIP-test), relative chlorophyll content, and biometric parameters were measured in plants grown for fifteen days in soil containing Zn concentrations of 0, 300, 750, and 1,500 mg(ZnCl2) kg-1. Ecophysiological response to metal stress differed in dependence on the Zn concentration and clone. At the low Zn concentration (300 mg kg-1), the absence of any significant reductions in parameters investigated indicated an efficient plant homeostasis to maintain the metal content within phytotoxic limits. Stomatal limitation, observed at 750 and 1,500 mg kg-1, which was found in all clones after three days of the treatment, might be caused by indirect effects of metal on guard cells. Among commercial clones, “Drago” was more sensitive to Zn stress, showing inhibition of growth, while “1962” clone showed a downregulation of PSII photochemistry following the slowdown in the Calvin-Benson cycle. On the contrary, the natural Salix clone (“Sacco”) performed better compared to the other clones due to activation of a photosynthetic compensatory mechanism., A. Bernardini, E. Salvatori, S. Di Re, L. Fusaro, G. Nervo, F. Manes., and Obsahuje seznam literatury

Language:

Multiple languages

Rights:

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

Coverage:

56-64

Source:

Photosynthetica | 2016 Volume:54 | Number:1

Harvested from:

CDK

Metadata only:

false