CO-ORDINATION OF PHOTOSYNTHESIS AND STOMATAL RESPONSES OF MONGOLIAN OAK (QUERCUS MONGOLICA FISCH. EX LEDEB.) TO ELEVATED O-3 AND/OR CO2 LEVELS

doi:10.15666/aeer/1702_42574268

	CO-ORDINATION OF PHOTOSYNTHESIS AND STOMATAL RESPONSES OF MONGOLIAN OAK (QUERCUS MONGOLICA FISCH. EX LEDEB.) TO ELEVATED O-3 AND/OR CO2 LEVELS
	Wang, L. L.1; Li, Y. Y.1; Li, X. M.1; Ma, L. J.1; He, X. Y.2
刊名	APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH
	2019
卷号	17 期号:2 页码:4257-4268
关键词	photosynthetic CO2 exchange chlorophyll fluorescence stomatal density stomatal area
ISSN号	1589-1623
DOI	10.15666/aeer/1702_42574268
英文摘要	Four-year-old trees grown in open-top chambers (OTCs) were exposed to elevated O-3 (80 nmol/mol, EO) or/and elevated CO2 (700 mu mol/mol, EC) levels. The object is to study the responses of photosynthesis and stomata in leaves of Mongolian oak (Quercus mongolica) to EO and/or EC for two successive growing seasons in an urban area. The experiment was conducted in the arboretum located at the center of Shenyang city. The results show that: (1) EO decreased P-n (Light-saturated net photosynthesis rate), g(s) (stomatal conductance) and T-r (transpiration rate). The stomata closure maybe associated with the direct effect of EO on guard cells. The decreases of F-0, F-m and F-v/F-m indicated that EO limits the capability of the plant to use photon energy and thus alters photosynthesis. (2) EC increased P-n and C-i (intercellular CO2 concentration) of leaves, but decreased g(s) and T-r slightly. Stomatal density decreased significantly at the end of the second season. Perhaps, EC was detected by mature leaves in the first season which signaled to the developing leaves in the next season, the stomatal developments of which altered accordingly. (3) Under EC+EO, EC relieved most of the O-3-induced adverse effects to P-n. The decreases of g(s) and T-r were mainly caused by EO. There was no significant difference of F-v/F-m detected compared to the control, EC can largely relieve the adverse effects of EO on the PSII reaction center. Changes of stomatal parameters were just like the changes under EC. Perhaps the morphological changes of the stomata were mainly caused by EC.
资助项目	National Natural Science Foundation of China[31600314]
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	CORVINUS UNIV BUDAPEST
WOS记录号	WOS:000462830400185
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/124003]
专题	中国科学院沈阳应用生态研究所
通讯作者	Wang, L. L.; Li, Y. Y.
作者单位	1.Shenyang Normal Univ, Coll Life Sci, 253 Huanghe North St, Shenyang 110034, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, L. L.,Li, Y. Y.,Li, X. M.,et al. CO-ORDINATION OF PHOTOSYNTHESIS AND STOMATAL RESPONSES OF MONGOLIAN OAK (QUERCUS MONGOLICA FISCH. EX LEDEB.) TO ELEVATED O-3 AND/OR CO2 LEVELS[J]. APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,2019,17(2):4257-4268.
APA	Wang, L. L.,Li, Y. Y.,Li, X. M.,Ma, L. J.,&He, X. Y..(2019).CO-ORDINATION OF PHOTOSYNTHESIS AND STOMATAL RESPONSES OF MONGOLIAN OAK (QUERCUS MONGOLICA FISCH. EX LEDEB.) TO ELEVATED O-3 AND/OR CO2 LEVELS.APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH,17(2),4257-4268.
MLA	Wang, L. L.,et al."CO-ORDINATION OF PHOTOSYNTHESIS AND STOMATAL RESPONSES OF MONGOLIAN OAK (QUERCUS MONGOLICA FISCH. EX LEDEB.) TO ELEVATED O-3 AND/OR CO2 LEVELS".APPLIED ECOLOGY AND ENVIRONMENTAL RESEARCH 17.2(2019):4257-4268.