Journal of Integrative Agriculture ›› 2011, Vol. 10 ›› Issue (12): 1887-1897.DOI: 10.1016/S1671-2927(11)60189-2

• 论文 • 上一篇    下一篇

The Responses of Morphological Trait, Leaf Ultrastructure, Photosynthetic and Biochemical Performance of Tomato to Differential Light Availabilities

 FU Qiu-shi, ZHAO Bing, WANG Xue-wen, WANG Yu-jue, REN Shu-xin , GUO Yang-dong   

  1. 1. College of Agriculture & Biotechnology, China Agricultural University, Beijing 100193, P.R.China
    2. School of Agriculture, Virginia State University, Petersburg, VA23806, USA
    3. Department of Horticulture, Cornell University, Ithaca, NY14853, USA
  • 收稿日期:2010-08-14 出版日期:2011-12-01 发布日期:2011-12-19
  • 通讯作者: Correspondence GUO Yang-dong, Tel: +86-10-62734845, E-mail: yaguo@cau.edu.cn, Tel: +86-10-62734845; REN Shu-xin, Tel: +1-804-5243094, Fax: +1-804- 5245186, E-mail: sren@vsu.edu
  • 基金资助:

    This work was partly supported by the grants to Prof. Guo Yangdong (2009CB119000) and the Chinese Universities Scientific Fund (2009-2-06).

The Responses of Morphological Trait, Leaf Ultrastructure, Photosynthetic and Biochemical Performance of Tomato to Differential Light Availabilities

 FU Qiu-shi, ZHAO Bing, WANG Xue-wen, WANG Yu-jue, REN Shu-xin , GUO Yang-dong   

  1. 1. College of Agriculture & Biotechnology, China Agricultural University, Beijing 100193, P.R.China
    2. School of Agriculture, Virginia State University, Petersburg, VA23806, USA
    3. Department of Horticulture, Cornell University, Ithaca, NY14853, USA
  • Received:2010-08-14 Online:2011-12-01 Published:2011-12-19
  • Contact: Correspondence GUO Yang-dong, Tel: +86-10-62734845, E-mail: yaguo@cau.edu.cn, Tel: +86-10-62734845; REN Shu-xin, Tel: +1-804-5243094, Fax: +1-804- 5245186, E-mail: sren@vsu.edu
  • Supported by:

    This work was partly supported by the grants to Prof. Guo Yangdong (2009CB119000) and the Chinese Universities Scientific Fund (2009-2-06).

摘要: The whole-plant morphology, leaf ultrastructure, photosynthesis as well as enzyme activities of two tomato cultivars (Meifen-2 and Hongsheng) to differential light availabilities (450-500 μmol m-2 s-1, 75-100 μmol m-2 s-1) were examined in controlled environment. The results showed that the plant biomass and root/shoot ratio decreased and the specific leaf area increased significantly under the low light condition. There was a significant increase in malondialdehyde (MDA) concentration, superoxide dismutase (SOD) and peroxidase (POD) activities and decrease in soluble sugar and protein contents in LL-grown plants. For both cultivars, downregulation of photosynthesis and electron transport components were observed in LL-grown plants, the inhibition of the photosynthesis under the LL condition could be partially explained by the decrease of stomata density and by the changes of chloroplast.

关键词: chlorophyll fluorescence, chloroplast, photosynthesis, stomata, tomato

Abstract: The whole-plant morphology, leaf ultrastructure, photosynthesis as well as enzyme activities of two tomato cultivars (Meifen-2 and Hongsheng) to differential light availabilities (450-500 μmol m-2 s-1, 75-100 μmol m-2 s-1) were examined in controlled environment. The results showed that the plant biomass and root/shoot ratio decreased and the specific leaf area increased significantly under the low light condition. There was a significant increase in malondialdehyde (MDA) concentration, superoxide dismutase (SOD) and peroxidase (POD) activities and decrease in soluble sugar and protein contents in LL-grown plants. For both cultivars, downregulation of photosynthesis and electron transport components were observed in LL-grown plants, the inhibition of the photosynthesis under the LL condition could be partially explained by the decrease of stomata density and by the changes of chloroplast.

Key words: chlorophyll fluorescence, chloroplast, photosynthesis, stomata, tomato