Mechanism and regulation of transporters for water, low molecular compounds, and ions on the response to salt stress.

We reported that a few salt tolerant rice and barley cultivars had reduced the root water conductance as an early reaction after salt stress. Now we are conducting the study to reveal regulators for this response. We are also analyzing aquaporins transporting low molecular weight compounds (H2O2, CO2) in addition to water. Furthermore, we are conducting molecular and functional analysis of ion transporters under salt stress.

An aquaporin facillitaing the memebrane transport of water and CO2

Please read details from the site "Katsuhara". Furthermore, you can read details for Aquaporin research in this site

 

Aluminum toxicity and tolerant mechanisms in plants

We study mechanisms of aluminum (Al) induced cell deash and root growth inhibition using tobacco cultured cells and plants. Recently, we showed relation to vacuolar prossessing enzyme (VPE) and sucrose transporter. Furthermore, we are analyzing that wheat Al-tolerant gene, ALMT1, which encodes Al-activated malate transporter. Now, the structural and functional analyses (eg. activation mechanism by Al) are studied. In addition, since the ALMT-protein family is specific to plants, functional diversity of the ALMT1 homologues is studied.

Wheat aluminum tolerant gene, ALMT1 (Aluminum-activated malate transporter 1)

 

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