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  1. 原著論文

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/46556
559c0063-2854-426a-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

WEKO 464002

Kobayashi, Natsuko

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Iwata, Naoko

× Iwata, Naoko

WEKO 464003

Iwata, Naoko

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Saito, Takayuki

× Saito, Takayuki

WEKO 464004

Saito, Takayuki

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Suzuki, Hisashi

× Suzuki, Hisashi

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Suzuki, Hisashi

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Iwata, Ren

× Iwata, Ren

WEKO 464006

Iwata, Ren

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Tanoi, Keitaro

× Tanoi, Keitaro

WEKO 464007

Tanoi, Keitaro

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Nakanishi, Tomoko

× Nakanishi, Tomoko

WEKO 464008

Nakanishi, Tomoko

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斉藤 貴之

× 斉藤 貴之

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en 斉藤 貴之

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鈴木 寿

× 鈴木 寿

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en 鈴木 寿

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岩田 錬

× 岩田 錬

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en 岩田 錬

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田野井 慶太朗

× 田野井 慶太朗

WEKO 464012

en 田野井 慶太朗

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中西 友子

× 中西 友子

WEKO 464013

en 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.
書誌情報 Soil Science and Plant Nutrition

巻 59, 号 2, p. 149-155, 発行日 2013-02
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
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