Nami Okumura

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Dugongs (<i>Dugong</i> <i>dugon</i>) produce different types of vocalization such as chirp, trill, and barks. Previous reports showed that dugongs have two kinds of phonemes: long duration calls (trill) and short duration calls (chirp-squeaks hereinafter called chirp). Especially, the chirp and trill calls were widely reported in different populations.(More)
For iron acquisition grasses secrete iron chelators called mugineic acid-family phytosiderophores (MAs) which solubilize sparingly soluble Fe 3 +, viz. Fe(OH)3, in the rhizosphere, and reabsorb Fe(III)-MAs complex [1] thus formed. Under Fe-deficient conditions the secreted amount of MAs and the absorption rate of the Fe(III)-MAs complex accelerates [2]. At(More)
A λzapII cDNA library was constructed from mRNA isolated from Fe-deficient barley roots and screened with cDNA probes made from mRNA of Fe-deficient and Fe-sufficient (control) barley roots. Seven clones were selected. Among them a clone having the putative full-length mRNA of dioxygenase as judged by northern hybridization was selected and named Ids2 (iron(More)
A λZAPII-cDNA library constructed from poly(A)+-RNA isolated from Fe-deficient barley roots was used for differential screening of barley roots grown in the presence and absence of Fe. Among seven clones that hybridised specifically to the probe for Fe deficiency, one clone (Ids2) was sequenced. Using a part of the cDNA sequence as a probe, a genomic-DNA(More)
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