bundle sheath

維管束鞘

関

vascular bundle sheath

WordNet

1. make into a bundle; "he bundled up his few possessions" (同)bundle_up, roll_up
2. sleep fully clothed in the same bed with ones betrothed (同)practice bundling
3. a package of several things tied together for carrying or storing (同)sheaf
4. a protective covering (as for a knife or sword)
5. an enveloping structure or covering enclosing an animal or plant organ or part (同)case
6. the act of binding something into a bundle
7. the act of shoving hastily; "she complained about bundling the children off to school"
8. a onetime custom during courtship of unmarried couples occupying the same bed without undressing
9. protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior (同)overlay, overlayer
10. enclosed in a protective covering; sometimes used in combination; "his sheathed sword"; "the cats sheathed claws"; "a ships bottom sheathed in copper"; "copper-sheathed"

PrepTutorEJDIC

1. (…の)『束』,『包み』,巻いたもの(旅行者の荷物など)《+『of』+『名』》 / …'を'包みにする,束にする / (…に)…'を'ごっちゃに投げ込む《+『名』+『into』+『名』》 / 荷物をまとめてさっさと出て行く《+『off』(『out』,『away』)》
2. (刀などの)さや / (動・植物のある部分をおおう)さや;(ケーブルの)鎧装(がいそう)など・体にぴったり合った女性の衣服
3. さやに納めること / おおい,被覆

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/06/01 21:52:44」(JST)

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[Wiki en表示]

Cross section of celery stalk, showing vascular bundles, which include both phloem and xylem

Detail of vascular bundle: closed, collateral vascular bundles of the stem axis of Zea mays

Vascular bundle in the leaf of Metasequoia glyptostroboides

A vascular bundle is a part of the transport system in vascular plants. The transport itself happens in vascular tissue, which exists in two forms: xylem and phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues. Also, it is a vein in the leaf that contains conducting tissues.

The xylem typically lies adaxial with phloem positioned abaxial. In a stem or root this means that the xylem is closer to the centre of the stem or root while the phloem is closer to the exterior. In a leaf, the adaxial surface of the leaf will usually be the upper side, with the abaxial surface the lower side. This is why aphids are typically found on the underside of a leaf rather than on the top, since the sugars manufactured by the plant are transported by the phloem, which is closer to the lower surface.

The position of vascular bundles relative to each other may vary considerably: see stele.

Cross section of a leaf showing parts of a vascular bundle

Bundle-sheath cells

Bundle-sheath cells are photosynthetic cells arranged into tightly packed sheaths around the veins of a leaf. They form a protective covering on leaf veins, and consist of one or more cell layers, usually parenchyma. Loosely arranged mesophyll cells lie between the bundle sheath and the leaf surface. The Calvin cycle is confined to the chloroplasts of these bundle sheath cells in C₄ plants.

Further readings

• Campbell, N. A. & Reece, J. B. (2005). Photosynthesis. Biology (7th ed.). San Francisco: Benjamin Cummings.

External links

• Curtis, Lersten, and Nowak cross section of a vascular bundle
• Mauseth another cross section of a vascular bundle

UpToDate Contents

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• 1. 右脚ブロック right bundle branch block
• 2. 硬膜内神経鞘腫 intradural nerve sheath tumors
• 3. 左脚ブロック left bundle branch block
• 4. 脚ブロックまたはペーシング調律存在下での心筋梗塞の心電図による診断 electrocardiographic diagnosis of myocardial infarction in the presence of bundle branch block or a paced rhythm
• 5. 左脚ブロックまたはペースメーカーによる心室リズムの患者における負荷試験 stress testing in patients with left bundle branch block or a paced ventricular rhythm

Japanese Journal

• Multi-dimensional void fraction measurement of transient boiling two-phase flow in a heated rod bundle

• Mechanical Engineering Journal 2(5), 15-00163-15-00163, 2015
• NAID 130005103822

• Multi-dimensional void fraction measurement of transient boiling two-phase flow in a heated rod bundle

• Mechanical Engineering Journal advpub(0), 2015
• NAID 130005088576

• Overexpression analysis suggests that FON2-LIKE CLE PROTEIN1 is involved in rice leaf development

• Genes & Genetic Systems 89(2), 87-91, 2014
• NAID 130004687234

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★リンクテーブル★

リンク元	「維管束鞘」
拡張検索	「vascular bundle sheath」
関連記事	「bundle」「sheath」

「維管束鞘」

　　[★]

英

bundle sheath、vascular bundle sheath

「vascular bundle sheath」

　　[★]

維管束鞘

関

bundle sheath

「bundle」

　　[★]

• n.

• 束、線維束

• v.

• 束ねる

関

fascicle、fasciculi、fasciculus

　 　 　 　

「sheath」

　　[★]

• n.

• 外筒(シース)、葉鞘

関

intussuscipiens、leaf sheath