Analysis of Reduced Photosynthesis in the Apple Leaf under Sink-limited Conditions Due to Girdling
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- Cheng Yuhou
- Faculty of Agriculture and Life Science, Hirosaki University
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- Arakawa Osamu
- Faculty of Agriculture and Life Science, Hirosaki University
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- Kasai Minobu
- Faculty of Agriculture and Life Science, Hirosaki University
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- Sawada Shinichi
- Faculty of Agriculture and Life Science, Hirosaki University
Bibliographic Information
- Other Title
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- 環状剥皮処理によるシンク・リミット状態がリンゴ若木の光合成速度を低下させる要因の解析
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Description
On the 6th day after girdling, the photosynthesis rate of leaves on the 3-year-old stem, 2-year-old stem and new shoot of a branch of a field-grown 4-year-old apple tree decreased. The starch content in the leaves, bark and wood significantly increased, especially in shoot leaves. In the girdled branch, concomitant with the photosynthesis reduction, on the 6th day after girdling, the stomatal conductance of leaves on the 3-year-old stem, 2-year-old stem and new shoot declined. Under this condition, a significant correlation between the photosynthesis rate and stomatal conductance could be recognized. On the other hand, with girdling, the activity of ribulose-1,5-bisphosphate carboxylase (RuBPcase) per leaf area decreased on the basis of the decrease in RuBPcase activity per unit enzyme protein. The initial activity of RuBPcase per leaf area in shoot leaves decreased. Moreover, the activity of RuBPcase per leaf area significantly correlated with the photosynthesis rate. Based on these results, it is suggested that the decrease in the photosynthesis rate of the sink-limited branch of a young apple tree 6 days after girdling is mainly caused by closing of the stomatal aperture and reduction of RuBPcase activity per leaf area.<br>
Journal
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- Journal of the Japanese Society for Horticultural Science
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Journal of the Japanese Society for Horticultural Science 77 (2), 115-121, 2008
THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE
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Keywords
Details 詳細情報について
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- CRID
- 1390001205290275840
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- NII Article ID
- 110006651618
- 130004510627
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- NII Book ID
- AA12177046
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- ISSN
- 1882336X
- 18823351
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- NDL BIB ID
- 9456902
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- Abstract License Flag
- Disallowed