Expression of an aquaporin at night in relation to the growth and root water permeability in barley seedlings

Maki Katsuhara, Kazuki Koshio, Mineo Shibasaka, Kunihiro Kasamo

    Research output: Contribution to journalArticlepeer-review

    23 Citations (Scopus)

    Abstract

    Both root and shoot of barley seedlings showed continuous growth at night as well as in the daytime. Root hydraulic conductivity (LPr) was monitored, and high LPr values were recorded at night. For revealing the molecular mechanism, the presence of an aquaporin HvPIP2;1 in barley roots was investigated. The accumulation of the HvPIP2;1 transcript was mostly observed from the evening to the middle of the night. HvPIP2;1 protein was most abundant around midnight. As for tissue localization, HvPIP2;1 protein was abundant in cells involved in water transport. These results suggested the possible involvement of HvPIP2;1 in the mechanism of water transport in roots.

    Original languageEnglish
    Pages (from-to)883-888
    Number of pages6
    JournalSoil Science and Plant Nutrition
    Volume49
    Issue number6
    DOIs
    Publication statusPublished - Dec 1 2003

    Keywords

    • Aquaporin
    • Barley
    • Diurnal expression
    • Root hydraulic conductivity
    • Water transport at night

    ASJC Scopus subject areas

    • Soil Science
    • Plant Science

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