Role of K+ and Cl- in osmotic adjustment in roots and hypocotyls of intact mung bean seedlings

Kimio Itoh, Teruaki Yamada, Hideo Ishikawa, Eiji Ohta, Makoto Sakata

研究成果: Article査読

7 被引用数 (Scopus)

抄録

It was confirmed that osmotic adjustment occurred in young intact mung bean (Vigna mungo (L.) Hepper) seedlings exposed to high osmotic pressure stress. Root growth was not affected by osmotic pressure of less than 200 mOsra in the external solution, although hypocotyl growth was conspicuously reduced. Under this moderate osmotic stress, intracellular K+ concentration, [K+]i, increased dramatically during the osmotic adjustment in all the regions of the root, but the intracellular Cl- concentration, [Cl-]i, increased only in the aged mature region of the root (28-33 mm from the root tip). About a half of the intracellular osmotic pressure in the aged mature region of the root could be ascribed to the contributions of [K+]i and [Cl-]i, but in the hypocotyl, [K+]i only contributed slightly to the osmotic adjustment.

本文言語English
ページ(範囲)1445-1450
ページ数6
ジャーナルPlant and Cell Physiology
27
8
出版ステータスPublished - 1986 12月

ASJC Scopus subject areas

  • 生理学
  • 植物科学
  • 細胞生物学

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