Enhancement of photosynthetic parameters and growth of Zelkova serrata by arbuscular mycorrhizal fungi under simulated sulfuric acid rain

Plant Ecology ◽  
2021 ◽  
Author(s):  
Yanhong Wang ◽  
Shanyan Liu ◽  
Changliang Shao ◽  
Aiping Wu ◽  
Xiaobin He ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Arbuscular Mycorrhizal Fungi ◽  
Acid Rain ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Photosynthetic Parameters ◽  
Zelkova Serrata

scholarly journals Improved Tolerance of Mycorrhizal Torreya grandis Seedlings to Sulfuric Acid Rain Related to Phosphorus and Zinc Contents in Shoots

2021 ◽  
Vol 7 (4) ◽  
pp. 296
Author(s):  
Lina Xia ◽  
Changliang Shao ◽  
Naili Zhang ◽  
Aiping Wu ◽  
Jiangbo Xie ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Rain ◽  
Mycorrhizal Fungi ◽  
Southern China ◽  
Acid Tolerance ◽  
Arbuscular Mycorrhizal ◽  
Total Biomass ◽  
Mycorrhizal Associations ◽  
Torreya Grandis ◽  
Proline Concentration

Acid rain (AR) is an increasingly serious environmental problem that frequently occurs in Southern China with sulfuric acid rain (SAR) as the main type. SAR can negatively affect the growth and physiological properties of trees, but mycorrhizal associations may mitigate such detrimental effects. However, the mechanisms by which arbuscular mycorrhizal fungi control SAR-induced impacts on Torreya grandis plants remain unclear. A pot experiment was conducted on T. grandis seedlings, an economically important tree species in Southern China, in which inoculated and non-inoculated T. grandis seedlings were subjected to three simulated SAR regimes (pH of 5.6, 4.0, and 2.5, respectively) to examine the effects on the growth, osmotic regulation, and nutrient absorption of these seedlings. The results show that, although SAR had no effect on the accumulation of biomass, it significantly decreased the concentrations of proline and soluble protein, shoot Zn2+, P, K+, and Ca2+ concentrations, and the Fe2+ and Mn2+ concentrations of shoots and roots. Mycorrhizal inoculation, especially with Rhizophagus irregularis, significantly increased total biomass, proline concentration, and the Zn2+, P, and K+ concentrations in the shoots of T. grandis under lower pH conditions. Moreover, our findings suggest that the combination of root colonization, acid tolerance, and the concentrations of shoot-P, shoot-Zn2+, and root-Fe2+ of T. grandis jointly conferred mycorrhizal benefits on the plants under SAR conditions. Given the enhancement of the nutritional quality of T. grandis owing to mycorrhizal associations, inoculation with R. irregularis may be preferable for the culturing and management of these plants under acidic conditions.

scholarly journals Effects of Arbuscular Mycorrhizal Fungi on Growth, Photosynthesis, and Nutrient Uptake of Zelkova serrata (Thunb.) Makino Seedlings under Salt Stress

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 186 ◽  
Author(s):  
Jinping Wang ◽  
Zhiyuan Fu ◽  
Qiong Ren ◽  
Linjun Zhu ◽  
Jie Lin ◽  
...  
Keyword(s):  
Salt Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Nutrient Uptake ◽  
Mycorrhizal Fungi ◽  
Eastern China ◽  
Arbuscular Mycorrhizal ◽  
Coastal Areas ◽  
Funneliformis Mosseae ◽  
Positive Effects ◽  
Zelkova Serrata

Salinity is the primary restriction factor for vegetation conservation and the rehabilitation of coastal areas in Eastern China. Arbuscular mycorrhizal fungi (AMF) have been proved to have the ability to alleviate salt stress in plants. However, the role of AMF in relieving salt stress among indigenous trees species is less well known, limiting the application of AMF in the afforestation of local area. In this study, a salt-stress pot experiment was conducted to evaluate the effects of AMF on Zelkova serrata (Thunb.) Makino, a tree species with significant potential for afforestation of coastal area. The Z. serrata seedlings inoculated with three AMF strains (Funneliformis mosseae 1, Funneliformis mosseae 2, and Diversispora tortuosa) were subjected to two salt treatments (0 and 100 mM NaCl) under greenhouse conditions. The results showed that the three AMF strains had positive effects, to a certain extent, on plant growth and photosynthesis under normal condition. However, only F. mosseae 1 and F. mosseae 2 alleviated the inhibition of growth, photosynthesis, and nutrient uptake of Z. serrata seedlings under salt stress. The two AMF strains mitigated salt-induced adverse effects on seedlings mainly by increasing the leaf photosynthetic ability and biomass accumulation by reducing Na+ content, increasing P, K+, and Mg2+ content, as well as by enhancing photosynthetic pigments content and the stomatal conductance of leaves. These results indicated that AMF inoculation is a promising strategy for the afforestation of coastal areas in Eastern China.

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