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Different magnesium uptake and transport activity along the rice root axis revealed by a <sup>28</sup>Mg tracer experiments
https://repo.qst.go.jp/records/46556
https://repo.qst.go.jp/records/46556559c0063-2854-426a-b732-b3d960146bd0
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2013-06-04 | |||||
| タイトル | ||||||
| タイトル | Different magnesium uptake and transport activity along the rice root axis revealed by a <sup>28</sup>Mg tracer experiments | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Kobayashi, Natsuko
× Kobayashi, Natsuko× Iwata, Naoko× Saito, Takayuki× Suzuki, Hisashi× Iwata, Ren× Tanoi, Keitaro× Nakanishi, Tomoko× 斉藤 貴之× 鈴木 寿× 岩田 錬× 田野井 慶太朗× 中西 友子 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We characterized magnesium (Mg) uptake and transport along the primary root of six-day-old rice seedlings (Oryza sativa L. cv. Nipponbare) using 28Mg as a radioactive tracer. We used a multi-compartment transport box, which separated the root region every 1 cm in order to apply 28Mg to a particular root region. Then, the root region was defined as R-A, R-B, and R-C in order from the root tip region to the lateral root-developing area. The amount of 28Mg taken up in the R-C region in 15 min, 1 h, and 3 h was nearly three times as much as that of R-A and R-B. Thirty percent to 50% of 28Mg absorbed from R-C was transported toward the lower part of the root. Furthermore, when 28Mg was absorbed from R-C, it was detected only in the root part lower than R-C after 5 min. In contrast, less than 5% of 28Mg absorbed from R-B was transported downward. This characteristic uptake and transport behavior was not observed with 32P(phosphorus)-phosphate or 45Ca (calcium). Our results demonstrate that Mg uptake and transport activity differ between root regions and further suggest that phloem loading of Mg occurs at R-C within minutes after uptake from the culture solution. Then, Mg is transported toward the root tip directly without going up the shoot. Key words: magnesium, 28Mg tracer, multi-compartment transport box, rice root, uptake and transport. |
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| 書誌情報 |
Soil Science and Plant Nutrition 巻 59, 号 2, p. 149-155, 発行日 2013-02 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0038-0768 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1080/00380768.2013.768474 | |||||
