干旱区生态环境知识资源中心(Arid): Photosynthesis Adaptation of the Desert-Steppe Shrub Caragana bungei to Larch Forest Conditions at Mountainous Slopes in Mongolian Khangai

Arid

DOI	10.1134/S2079096116030070
	Photosynthesis Adaptation of the Desert-Steppe Shrub Caragana bungei to Larch Forest Conditions at Mountainous Slopes in Mongolian Khangai
	Ivanov, L. A.; Ivanova, L. A.; Migalina, S. V.; Yudina, P. K.; Drobyshev, Yu. I.; Tserenkhand, G.; Tsoog, S.; Gunin, P. D.
通讯作者	Ivanov, LA
来源期刊	ARID ECOSYSTEMS
ISSN	2079-0961
EISSN	2079-0988
出版年	2016
卷号	6 期号:3 页码:195-205
英文摘要	Leaf parameters, gas exchange parameters, photosynthetic pigments content, mesophyll structure, and sizes of shrubs were studied for Caragana bungei Ledeb. in contrasting habitats of the mountain slopeherb-grass-shrub steppe and larch forest. It was shown that the adaptation of photosynthetic apparatus of C. bungei to forest conditions does not lie in biochemical and primary photosynthetic processes but consists of quantitative changes in the leaf tissue-cellular structure. Steppe and forest individuals differed neither in photosynthetic capacity nor in kinetic parameters of photosynthesis. It is assumed that the development of Caragana's leaves at high light in the spring larch forest leads to the formation of a strong photosynthetic apparatus as a preadaptation to fluctuating light under the forest canopy. At the same time, forest shrubs had thinner and less dense leaves due to the decreased size and number of mesophyll cells. The decrease in the structural complexity of the mesophyll was compensated for by enhancement of the photosynthetic capacity of cells and chloroplasts. The low rate of real photosynthesis under the forest canopy shadow was observed, but it was compensated by a high relative mass and area of the leaves. As a result there were no differences in shrub sizes between steppe and forest shrubs of Caragana. We concluded that photosynthesis adaptation at the levels of leaf mesophyll and of the ratio of photosynthetic organs allow this species to maintain growth and to gain an advantage in an open larch forest.
英文关键词	Mongolia shrub invasion Caragana bungei forest steppe shading leaf mass area photosynthesis leafs mesophyll chlorophyll
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000401301000007
WOS关键词	SHADE LEAVES ; LEAF ; EXPANSION ; ECOSYSTEM ; AREA ; CONSEQUENCES ; ACCLIMATION ; MESOPHYLL ; ENCROACHMENT ; IRRADIANCE
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331826
作者单位	[Ivanov, L. A.; Ivanova, L. A.; Migalina, S. V.; Yudina, P. K.] Russian Acad Sci, Ural Branch, Bot Garden, Ul 8 Marta 202a, Ekaterinburg 620144, Russia; [Drobyshev, Yu. I.; Gunin, P. D.] Russian Acad Sci, Severtsovs Inst Ecol & Evolut, Pr Leninskii 33, Moscow 11907, Russia; [Tserenkhand, G.; Tsoog, S.] Mongolian Acad Sci, Inst Gen & Expt Biol, Pr Mira 54b, Ulaanbaatar 21035, Mongolia
推荐引用方式 GB/T 7714	Ivanov, L. A.,Ivanova, L. A.,Migalina, S. V.,et al. Photosynthesis Adaptation of the Desert-Steppe Shrub Caragana bungei to Larch Forest Conditions at Mountainous Slopes in Mongolian Khangai[J],2016,6(3):195-205.
APA	Ivanov, L. A..,Ivanova, L. A..,Migalina, S. V..,Yudina, P. K..,Drobyshev, Yu. I..,...&Gunin, P. D..(2016).Photosynthesis Adaptation of the Desert-Steppe Shrub Caragana bungei to Larch Forest Conditions at Mountainous Slopes in Mongolian Khangai.ARID ECOSYSTEMS,6(3),195-205.
MLA	Ivanov, L. A.,et al."Photosynthesis Adaptation of the Desert-Steppe Shrub Caragana bungei to Larch Forest Conditions at Mountainous Slopes in Mongolian Khangai".ARID ECOSYSTEMS 6.3(2016):195-205.