Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yam
The effects of elevated carbon dioxide concentration on the morphology of leaf blades in two Chinese yam lines under different temperature conditions were determined. Plants were grown under two [CO2] levels, ambient (about 400 µmol mol−1) and elevated (ambient + 200 µmol mol−1) in the daytime, and...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-10-01
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| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/1343943X.2018.1511377 |
| _version_ | 1818527238965952512 |
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| author | Nguyen Cong Thinh Etsushi Kumagai Hiroyuki Shimono Michio Kawasaki |
| author_facet | Nguyen Cong Thinh Etsushi Kumagai Hiroyuki Shimono Michio Kawasaki |
| author_sort | Nguyen Cong Thinh |
| collection | DOAJ |
| description | The effects of elevated carbon dioxide concentration on the morphology of leaf blades in two Chinese yam lines under different temperature conditions were determined. Plants were grown under two [CO2] levels, ambient (about 400 µmol mol−1) and elevated (ambient + 200 µmol mol−1) in the daytime, and two mean air temperature regimes, approximately ambient temperature (22.2°C) and high temperature (25.6°C). The palisade layer was thicker under elevated [CO2] than under ambient [CO2] in both temperature regimes, and the whole yam leaf blade was thicker under elevated [CO2] than under ambient [CO2] in the approximately ambient temperature regime. The numbers of chloroplasts per palisade cell and spongy cell as well as per unit profile area of palisade cell, number of starch grains per chloroplast, profile area of the starch grain, and starch-to-chloroplast area ratio in both palisade and spongy cells were higher under elevated [CO2] than under ambient [CO2] in both temperature regimes. Furthermore, the stomatal density on the abaxial side of the leaf blade in Chinese yam was greater under elevated [CO2] than under ambient [CO2] under both temperature regimes, and stomatal-pore length was higher under elevated [CO2] than under ambient [CO2] in the approximately ambient temperature regime. These results indicate that elevated [CO2] positively affects the photosynthetic apparatus. The results of this study provide information for understanding the response characteristics of the leaf blade under elevated [CO2] and a possible explanation for the positive photosynthetic responses of Chinese yam to elevated [CO2] in our previous study. List of Abbreviations:[CO2]: carbon dioxide concentration |
| first_indexed | 2024-12-11T06:33:35Z |
| format | Article |
| id | doaj.art-f4f2f73ebb1f4331a456a2e75b0be4ff |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-12-11T06:33:35Z |
| publishDate | 2018-10-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-f4f2f73ebb1f4331a456a2e75b0be4ff2022-12-22T01:17:27ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082018-10-0121431132110.1080/1343943X.2018.15113771511377Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yamNguyen Cong Thinh0Etsushi Kumagai1Hiroyuki Shimono2Michio Kawasaki3Iwate UniversityNARO Tohoku Agricultural Research CenterIwate UniversityIwate UniversityThe effects of elevated carbon dioxide concentration on the morphology of leaf blades in two Chinese yam lines under different temperature conditions were determined. Plants were grown under two [CO2] levels, ambient (about 400 µmol mol−1) and elevated (ambient + 200 µmol mol−1) in the daytime, and two mean air temperature regimes, approximately ambient temperature (22.2°C) and high temperature (25.6°C). The palisade layer was thicker under elevated [CO2] than under ambient [CO2] in both temperature regimes, and the whole yam leaf blade was thicker under elevated [CO2] than under ambient [CO2] in the approximately ambient temperature regime. The numbers of chloroplasts per palisade cell and spongy cell as well as per unit profile area of palisade cell, number of starch grains per chloroplast, profile area of the starch grain, and starch-to-chloroplast area ratio in both palisade and spongy cells were higher under elevated [CO2] than under ambient [CO2] in both temperature regimes. Furthermore, the stomatal density on the abaxial side of the leaf blade in Chinese yam was greater under elevated [CO2] than under ambient [CO2] under both temperature regimes, and stomatal-pore length was higher under elevated [CO2] than under ambient [CO2] in the approximately ambient temperature regime. These results indicate that elevated [CO2] positively affects the photosynthetic apparatus. The results of this study provide information for understanding the response characteristics of the leaf blade under elevated [CO2] and a possible explanation for the positive photosynthetic responses of Chinese yam to elevated [CO2] in our previous study. List of Abbreviations:[CO2]: carbon dioxide concentrationhttp://dx.doi.org/10.1080/1343943X.2018.1511377Chinese yamchloroplastelevated CO2morphologystarch grain |
| spellingShingle | Nguyen Cong Thinh Etsushi Kumagai Hiroyuki Shimono Michio Kawasaki Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yam Plant Production Science Chinese yam chloroplast elevated CO2 morphology starch grain |
| title | Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yam |
| title_full | Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yam |
| title_fullStr | Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yam |
| title_full_unstemmed | Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yam |
| title_short | Effects of elevated atmospheric CO2 concentration on morphology of leaf blades in Chinese yam |
| title_sort | effects of elevated atmospheric co2 concentration on morphology of leaf blades in chinese yam |
| topic | Chinese yam chloroplast elevated CO2 morphology starch grain |
| url | http://dx.doi.org/10.1080/1343943X.2018.1511377 |
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