Responses of four succession tree species in low subtropics to enhanced UV-B radiation in the field

Title:

Responses of four succession tree species in low subtropics to enhanced UV-B radiation in the field

Creator:

Cai, X. A., Peng, S. L., Xia, H. P., Zhao, P., and Mason, F.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6527f0e2-fb5a-46ac-915f-ff06bb71e366
uuid:6527f0e2-fb5a-46ac-915f-ff06bb71e366
issn:0300-3604
doi:10.1007/s11099-008-0084-y

Subject:

Acacia, anatomical structure, Cryptocarya, epidermal morphology, growth, Machilus, net photosynthetic rate, respiration rate, Schima, stomatal conductance, and transpiration rate

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The tested tree species included pioneer species Acacia mangium, early succession stage species Schima superba, mesophyte intermediate-succession species Machilus chinensis, and shade-tolerant plant or late-succession species Cryptocarya concinna which occur in the lower subtropical forest community. A comparison with the current ambient level of UV-B radiation (UV-B) showed the leaf net photosynthetic rate (PN), transpiration rate (E), and stomatal conductance (g s) of the four species ranged from significantly decreased to no significant change. Additionally, the thickness of palisade and mesophyll in leaves of four tree species were decreased sharply by enhanced UV-B. The thickness of spongy parenchyma in leaves was also decreased except for M. chinensis. UV-B increased the leaf width of A. mangium but its leaf length, leaf thickness, and dry mass per unit area were not affected. Significantly increased stomata width was observed in A. mangium leaf epidermis in response to UV-B. Significantly decreased stomata width and significantly increased stomata density of leaf abaxial epidermis in M. chinensis were also observed. The stomata density of abaxial epidermis of C. concinna was remarkably increased by enhanced UV-B. The height and branch biomass of A. mangium and the height of S. superba were reduced visibly by enhanced UV-B. The four plant species could be classified into three groups of UV-B sensitiveness by hierarchical cluster analysis. A. mangium was sensitive to enhanced UV-B, while C. concinna showed more tolerance. and X. A. Cai ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

490-500

Source:

Photosynthetica | 2008 Volume:46 | Number:4

Harvested from:

CDK

Metadata only:

false