Impact of arbuscular mycorrhizal fungi on the growth, water status, and photosynthesis of hybrid poplar under drought stress and recovery

Title:

Impact of arbuscular mycorrhizal fungi on the growth, water status, and photosynthesis of hybrid poplar under drought stress and recovery

Creator:

Liu, T., Sheng, M., Wang, C. Y., Chen, H., Li, Z., and Tang, M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:b96591f6-8960-4348-815b-8fde89ff3c55
uuid:b96591f6-8960-4348-815b-8fde89ff3c55
issn:0300-3604
doi:10.1007/s11099-015-0100-y

Subject:

fotosyntéza, topol, photosynthesis, poplar, Shaanxi (Čína : provincie), Shaanxi (China : Province), drought tolerance, gas exchange, nonphotochemical quenching, photosynthetic capacity, relative water content, Rhizophagus irregularis, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

Poplars (Populus spp.) are widely used in the pulp and paper industry and as bioenergy resources. Poplars require a large amount of water for biomass accumulation and lack of water is a limiting factor for poplar growth. Arbuscular mycorrhizal (AM) fungi have been previously reported to afford some plant species with greater resistance to drought stress. However, the effects of AM fungi on hybrid poplar under drought stress and recovery have not been studied. The main aim of this study was to evaluate the effects of the AM fungus, Rhizophagus irregularis, on the growth, water status, chlorophyll (Chl) content and fluorescence, and photosynthesis of poplar seedlings. The experiment was divided into three stages. At each stage of the experiment, the seedlings were subjected to a different watering regime: well-watered (prior stress), drought, and then rewatering (recovery). Measurements were taken at the end of each stage of the experiment. The results showed that mycorrhizal plants had a higher net photosynthetic rate and Chl fluorescence compared with nonmycorrhizal plants, regardless of the stage. Mycorrhizal and nonmycorrhizal plants showed different responses to drought stress: mycorrhizal plants showed better water-use efficiency and water uptake under drought stress conditions. In general, the poplar seedlings that formed the AM symbiosis with R. irregularis showed enhanced growth and reduced loss of biomass during the drought stress compared with the nonmycorrhizal seedlings., T. Liu, M. Sheng, C. Y. Wang, H. Chen, Z. Li, M. Tang., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

250-258

Source:

Photosynthetica | 2015 Volume:53 | Number:2

Harvested from:

CDK

Metadata only:

false