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New Plant Science Findings from Ishikawa Prefectural University Discussed (Iron sensors and signals in response to iron deficiency)

August 5, 2014

By a News Reporter-Staff News Editor at Life Science Weekly -- Data detailed on Life Science Research have been presented. According to news reporting originating from Ishikawa, Japan, by NewsRx correspondents, research stated, "The transcription of genes involved in iron acquisition in plants is induced under iron deficiency, but our understanding of iron sensors and signals remains limited. Iron Deficiency-responsive Element-binding Factor 1 (IDEF1) and Hemerythrin motif-containing Really Interesting New Gene- and Zinc-finger proteins (HRZs)/BRUTUS (BTS) have recently emerged as candidate iron sensors because of their functions as potent regulators of iron deficiency responses and their iron-binding properties."

Our news editors obtained a quote from the research from Ishikawa Prefectural University, "IDEF1 is a central transcriptional regulator of graminaceous genes involved in iron uptake and utilization, predominantly during the early stages of iron deficiency. HRZs/BTS are E3 ubiquitin ligases and negative regulators of iron deficiency responses in both graminaceous and non-graminaceous plants. Rice OsHRZ1 and OsHRZ2 are also potent regulators of iron accumulation. Characterizing these putative iron sensors also provides clues to understanding the nature of iron signals, which may involve ionized iron itself, other metals, oxygen, redox status, heme and iron-sulfur clusters, in addition to metabolites affected by iron deficiency. Systemic iron responses may also be regulated by phloem-mobile iron and its chelators such as nicotianamine."

According to the news editors, the research concluded: "Iron sensors and signals will be identified by demonstration of signal transmission by IDEF1, HRZs/BTS, or unknown factors."

For more information on this research see: Iron sensors and signals in response to iron deficiency. Plant Science, 2014;224():36-43. Plant Science can be contacted at: Elsevier Ireland Ltd, Elsevier House, Brookvale Plaza, East Park Shannon, Co, Clare, 00000, Ireland. (Elsevier -; Plant Science -

The news editors report that additional information may be obtained by contacting T. Kobayashi, Ishikawa Prefectural Univ, Res Inst Bioresources & Biotechnol, Nonoichi, Ishikawa 9218836, Japan (see also Life Science Research).

Keywords for this news article include: Asia, Japan, Ishikawa, Life Science Research

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Source: Life Science Weekly

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