Absorption and Transport of Water and Ions in Corn and Sunflower Plants Grown Under Saline Conditions

Daisuke Yasutake, Katsumi Ishikawa, Yuki Sago, Takuya Araki, Kitano Masaharu, Tetsuo Kobayashi, Kota Hidaka

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

抄録

In order to analyze absorption and transport of water and ions in plants affecting the salinization in the root zone through physical and physiological processes, we measured water and ion uptake by roots, transpiration rate, leaf conductance, and ion concentrations in root xylem sap and other plant tissues of corn and sunflower grown under saline conditions using a nutrient film technique system. The rate of root water uptake was lower in corn than in sunflower, where the daytime stomatal closure in response to the excessive water stress induced by the saline solution was occurred in corn but not in sunflower. NO3-, PO43- and K+ were highly concentrated in the xylem sap as a result of the active and selective uptake of nutrients by roots of both corn and sunflower. Na+, which is not an essential element for plant growth, was not highly concentrated in the xylem sap or plant tissues of corn because corn exhibited a poor Na+ absorption and transportation ability. On the other hand, sunflower had a greater ability to absorb water, Na+, Mg2+, Ca2+, Cl-, and SO42-, and to transport these ions from the roots to the shoot. These differences in absorption and transport of water and ions indicate that sunflower is more salt tolerant than corn. The effects of these absorption and transport characteristics on plant growth and soil salinity should be taken into account for sustainable and effective plant production in salinized crop fields.

元の言語英語
ページ(範囲)19-26
ページ数8
ジャーナルjournal of agricultural meteorology
65
発行部数1
DOI
出版物ステータス出版済み - 1 1 2009

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Helianthus annuus
maize
ions
corn
ion
xylem
sap
water
ion transport
water uptake
plant tissues
plant growth
nutrient film technique
soil salinization
leaf conductance
nutrient
salinization
soil salinity
water stress
sodium chloride

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Atmospheric Science

これを引用

Absorption and Transport of Water and Ions in Corn and Sunflower Plants Grown Under Saline Conditions. / Yasutake, Daisuke; Ishikawa, Katsumi; Sago, Yuki; Araki, Takuya; Masaharu, Kitano; Kobayashi, Tetsuo; Hidaka, Kota.

:: journal of agricultural meteorology, 巻 65, 番号 1, 01.01.2009, p. 19-26.

研究成果: ジャーナルへの寄稿記事

Yasutake, Daisuke ; Ishikawa, Katsumi ; Sago, Yuki ; Araki, Takuya ; Masaharu, Kitano ; Kobayashi, Tetsuo ; Hidaka, Kota. / Absorption and Transport of Water and Ions in Corn and Sunflower Plants Grown Under Saline Conditions. :: journal of agricultural meteorology. 2009 ; 巻 65, 番号 1. pp. 19-26.
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