| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-08-08 |
| タイトル |
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タイトル |
Non-invasive 11C-imaging revealed no change in the dynamics of photosynthates translocation of strawberry in response to increasing daylight integrals under low light conditions |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Miyoshi Yuta
Kota Hidaka (NARO)
Yonggen Yin
Suzui Nobuo
Kurita Keisuke (JAEA)
Kawachi Naoki
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Adjustment the daylight integrals is directly affected to optimize the photosynthate translocation rate in plants and it is also important for reducing the cost of protected horticulture. To accurately estimate the dynamics of photosynthate translocation under the changing daylight integrals, it must be characterized using data obtained at continuous measure the response of daylight conditions. In our previous study, it was found that under sufficient light conditions for leaf photosynthesis (400 ?mol m?2 s?1 at the leaf surface), photosynthates translocation is promoted in response to increasing daylight integrals at leaf surface with the passage of the light period in living strawberry plants by using 11CO2 tracer and a positron-emitting tracer imaging system (PETIS), which can provide moving images of long-range translocation in intact plants using radioisotope tracers. Based on the previous study, we hypothesized that the increase in photosynthate concentrations in the leaf promotes the export of photosynthates from leaves to phloem. In this study, to evaluate this hypothesis, the effect of increased daylight integrals under low light conditions around the light compensation point (30 ?mol m?2 s?1 at the leaf surface), where the leaf carbon budget due to photosynthesis and respiration is balanced, on the photosynthates translocation was analyzed using PETIS. Serial images of 11C-photosynthates translocation obtained from PETIS revealed that the translocation dynamics remained almost constant over the light period under low light conditions. It was considered that the photosynthate concentration in the leaves almost remained unchanged from the start of the light period, and the export rate of photosynthate from the leaves into phloem was also unchanged. The results were found to support our previous hypothesis. |
| 書誌情報 |
Acta Horticulturae
巻 1381,
号 12,
p. 89-96,
発行日 2023-11
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| 出版者 |
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出版者 |
International Society for Horticultural Science |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
2406-6168 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.17660/ActaHortic.2023.1381.12 |
