Anatomical and physiological responses of Colorado blue spruce to vehicle exhausts

作者：Qin Xuebo; Sun Nan; Ma Lixin; Chang Yingqiao; Mu Liqiang^*

来源：Environmental Science and Pollution Research, 2014, 21(18): 11094-11098.

DOI：10.1007/s11356-014-3015-4

• Vehicle exhausts
• Anatomy
• Physiology
• Colorado blue spruce
• Biomonitoring

In order to examine whether the leaves of the Colorado blue spruce (Picea pungens) are damaged or not by traffic pollution, the traits of the anatomy and physiology of its leaves are investigated by exposure to vehicle exhausts in a laboratory experiment lasting 30 days. The results show that both the anatomical structures and physiological traits of the leaves are significantly affected by vehicle exhausts. The anatomical structures, including epidermis, cuticle, palisade, and spongy parenchyma are modified when exposed to the high concentrations (>= 0.4 mg/m(3)) of vehicle exhausts. However, physiological traits such as total chlorophyll content are not changed when exposed to different concentrations of vehicle exhaust. Unlike the total chlorophyll content, the electrical conductivities increased, whereas the POD activities decreased when presented in vehicle exhausts. The present study indicates that the Colorado blue spruce changes its anatomical structures and physiological traits to avoid possible damage by vehicle exhausts.

• 出版日期2014-9
• 单位天津自然博物馆; 东北林业大学