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| Web URL(s): | http://manu40.magtech.com.cn/Jweb_cdxb/CN/article/downloadArticleFile.do?attachType=PDF&id=484
Last checked: 07/12/2016
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Zheng, Min-na;
Li, Xiang-lin;
Wan, Li-qiang;
He, Feng;
Xi, Cui-ling |
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| Author Affiliation: | Zheng, Li, Wan, and He: Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing; Xi: College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, Gansu Province, China |
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| Title: | Effect of water stress on ultrastructures of chloroplast and mitochondria and photosynthesis in six gramineous grass species |
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| Source: | [Cao Di Sue Bao] [Acta Agrestia Sinica]. Vol. 17, No. 5, September 2009, p. 643-649. |
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| Publishing Information: | [Beijing, China]: [Zhongguo Xue Shu Qi Kan (Guang Pan Ban) Dian Zi Za Zhi She] |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Chloroplasts; Drought stress; Festulolium; Lolium perenne; Panicum virgatum; Paspalum dilatatum; Paspalum notatum; Phalaris arundinacea; Photosynthetic rate; Physiological responses; Stress response; Ultrastructure; Water stress
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| Abstract/Contents: | "Panicum virgatum L., Paspalum notatum Flugge, Paspalum dilatatum Poir, × Festulolium Asch et Graebn., Phalaris arundinnacea L. and Lolium perenne L. are important forage grasses but their productivity are often limited by the summer drought stress in most areas of China. There are research evidences showing these six species differ in their growing traits and production performance under drought stress; however research is lacking to understand the response of ultrastructure of mesophyll cells to water stress in different plant species, which is highly relevant to the mechanism of plant drought tolerance. In order to provide morphological and physiological indications for selection, introduction and breeding of the species, the effect of water stress on the ultrastructure and physiological function of chloroplast and mitochondria in mesophyll cells in the six grass species were studied under pot culture conditions using transmission electron microscope (TEM) and measurement of the chlorophyll content and net photosynthetic rate, respectively. The results showed that, after 8 d water stress, the chloroplasts swelled, became round, and moved towards the center of the cell. Some plastoglobulis and starch grains were found inside the chloroplasts. Grana and envelope in severely affected chloroplasts were disrupted. The mitochondria had better tolerance to water stress than chloroplasts and the number of mitochondria increased under water stress. The net photosynthetic rate was closely related to the change in chloroplast structure. The six grass species were classified into three groups with different tolerance to water stress: P. virgatum and Pa. notatum as the high tolerant, × Festulolium and Ph. arundinnacea as the medium tolerant, and Pa. dilatatum and L. perenne as the poor tolerant." |
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| Language: | Chinese |
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| References: | 24 |
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| Note: | Abstract also appears in English
Pictures, b/w
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zheng, M.-n., X.-l. Li, L.-q. Wan, F. He, and C.-l. Xi. 2009. Effect of water stress on ultrastructures of chloroplast and mitochondria and photosynthesis in six gramineous grass species. (In Chinese) [Cao Di Sue Bao] [Acta Agrestia Sinica]. 17(5):p. 643-649. |
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Last checked: 07/12/2016
Requires: PDF Reader |
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