| CO2浓度升高对番茄苗根系生长及其吲哚乙酸和乙烯含量的影响 |
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| 作者姓名： | WANG Yue DU Shao-Ting LI Ling-Ling HUANG Li-Dong FANG Ping LIN Xian-Yong ZHANG Yong-Song WANG Hai-Long |
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| 作者单位： | [1]Ministry of Education, Key Laboratory of Environmental Remediation and Ecosystem Health, College of Natural Re-sources and Environmental Science, Zhejiang University, Hangzhou 310029 （China） [2]Key Laboratory of Subtropical Soil Science and Plant Nutrition of Zhejiang ＂Province, College of Natural Resources andEnvironmental Science, Zhejiang University, Hangzhou 310029 （China） [3]College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310035 （China） [4]Scion, Private Bag 3020, Rotorua （New Zealand） [5]College of Land and Environment, Shenyang Agricultural University, Shenyang 110161 （China） |
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| 基金项目： | the National Natural Science Foundation of China，the National Key Basic Research Program (973 Program) of China，the Major Research Program of Zhejiang Province，the National "Eleventh Five Years Plan" Key Project on Science and Technology of China |
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| 摘 要： | A hydroponic experiment was carried out to study the effect of elevated carbon dioxide (CO2) on root growth of tomato seedlings. Compared with the control (350 μL L-1), CO2 enrichment (800 μL L-1) significantly increased the dry matter of both shoot and root, the ratio of root to shoot, total root length, root surface area, root diameter, root volume, and root tip numbers, which are important for forming a strong root system. The elevated CO2 treatment also significantly improved root hair development and elongation, thus enhancing nutrient uptake. Increased indole acetic acid concentration in plant tissues and ethylene release in the elevated CO2 treatment might have resulted in enhanced root growth and root hair development and elongation.
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| 关 键 词： | 二氧化碳释放 根系生长 乙酸乙烯 番茄幼苗 吲哚 CO2浓度增高 高浓度CO2 水培试验 |
| 收稿时间： | 9 November 2008 |
Effect of CO2 elevation on root growth and its relationship with indole acetic acid and ethylene in tomato seedlings |
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| WANG Yue,DU Shao-Ting,LI Ling-Ling,HUANG Li-Dong,FANG Ping,LIN Xian-Yong,ZHANG Yong-Song,WANG Hai-Long.Effect of CO2 elevation on root growth and its relationship with indole acetic acid and ethylene in tomato seedlings[J].Pedosphere,2009,19(5):570-576. |
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| Authors: | WANG Yue DU Shao-Ting LI Ling-Ling HUANG Li-Dong FANG Ping LIN Xian-Yong ZHANG Yong-Song and WANG Hai-Long |
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| Institution: | Ministry of Education, Key Laboratory of Environmental Remediation and Ecosystem Health, College of Natural Re-sources and Environmental Science, Zhejiang University, Hangzhou 310029 (China);College of Land and Environment, Shenyang Agricultural University, Shenyang 110161 (China);College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310035 (China);Ministry of Education, Key Laboratory of Environmental Remediation and Ecosystem Health, College of Natural Re-sources and Environmental Science, Zhejiang University, Hangzhou 310029 (China);Key Laboratory of Subtropical Soil Science and Plant Nutrition of Zhejiang Province, College of Natural Resources and Environmental Science, Zhejiang University, Hangzhou 310029 (China);Key Laboratory of Subtropical Soil Science and Plant Nutrition of Zhejiang Province, College of Natural Resources and Environmental Science, Zhejiang University, Hangzhou 310029 (China);Ministry of Education, Key Laboratory of Environmental Remediation and Ecosystem Health, College of Natural Re-sources and Environmental Science, Zhejiang University, Hangzhou 310029 (China);Ministry of Education, Key Laboratory of Environmental Remediation and Ecosystem Health, College of Natural Re-sources and Environmental Science, Zhejiang University, Hangzhou 310029 (China);Scion, Private Bag 3020, Rotorua(New Zealand) |
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| Abstract: | A hydroponic experiment was carried out to study the effect of elevated carbon dioxide (CO2) on root growth of tomato seedlings. Compared with the control (350 μLL−1), CO2 enrichment (800 μLL−1) significantly increased the dry matter of both shoot and root, the ratio of root to shoot, total root length, root surface area, root diameter, root volume, and root tip numbers, which are important for forming a strong root system. The elevated CO2 treatment also significantly improved root hair development and elongation, thus enhancing nutrient uptake. Increased indole acetic acid concentration in plant tissues and ethylene release in the elevated CO2 treatment might have resulted in root growth enhancement and root hair development and elongation. |
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| Keywords: | CO2 enrichment hormones plant growth root development root hairs |
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