Photosynthetic characteristics explain the high growth rate for Eucalyptus camaldulensis: Implications for breeding strategy

	Photosynthetic characteristics explain the high growth rate for Eucalyptus camaldulensis: Implications for breeding strategy
	Yang, Ying-Jie 1,3; Tong, You-Gui 2; Yu, Guo-Yun 2; Zhang, Shi-Bao1 ; Huan, Wei 1
	2018-11-15
发表期刊	INDUSTRIAL CROPS AND PRODUCTS
ISSN	0926-6690
卷号	124 页码:186-191
摘要	Eucalypt wood is a valuable raw material for pulping worldwide. Because of its high growth rate, Eucalyptus camaldulensis has been introduced for plantation production in many tropical and subtropical areas in China. However, photosynthetic mechanisms underlying the rapid growth rate of E. camaldulensis are not well known. Furthermore, little is known about the relative photosynthetic limitations that complicate breeding strategies for this species. In the present study, we examined the photosynthetic characteristics for leaves of E camaldulensis and observed stomata on both adaxial and abaxial surfaces, with their density being higher on the latter. Regardless of which surface was exposed to sunlight, the actual whole-leaf photosynthesis of E. camaldulensis reached 42.00 mu mol CO2 m(-2) s(-1), which is much higher than that reported for other C3 plants. Although both surfaces showed high photosynthetic rates, photosynthesis and intrinsic water-use efficiency were always greater on the abaxial surface, mainly because of differences in mesophyll conductance (g(m)). Analysis of quantitative limitations revealed that g(m) was the most constraining factor for photosynthesis while stomatal conductance was much less important. Taken together, our results imply that g(m) is a potential target for simultaneous improvement of photosynthesis and photosynthetic water-use efficiency in E. camaldulensis, and we propose that increased gm is an important trait for breeding of that species.
关键词	Eucalyptus camaldulensis Photosynthesis Mesophyll conductance Water-use efficiency Stomata
语种	英语
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/63093
专题	资源植物与生物技术所级重点实验室
通讯作者	Huan, Wei
作者单位	1.Chinese Acad Sci, Dept Econ Plants & Biotechnol, Kunming Inst Bot, Kunming 650201, Yunnan, Peoples R China 2.Forestry Bur Dongchuan Cty, Kunming 654100, Yunnan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Ying-Jie,Tong, You-Gui,Yu, Guo-Yun,et al. Photosynthetic characteristics explain the high growth rate for Eucalyptus camaldulensis: Implications for breeding strategy[J]. INDUSTRIAL CROPS AND PRODUCTS,2018,124:186-191.
APA	Yang, Ying-Jie,Tong, You-Gui,Yu, Guo-Yun,Zhang, Shi-Bao,&Huan, Wei.(2018).Photosynthetic characteristics explain the high growth rate for Eucalyptus camaldulensis: Implications for breeding strategy.INDUSTRIAL CROPS AND PRODUCTS,124,186-191.
MLA	Yang, Ying-Jie,et al."Photosynthetic characteristics explain the high growth rate for Eucalyptus camaldulensis: Implications for breeding strategy".INDUSTRIAL CROPS AND PRODUCTS 124(2018):186-191.