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Sakthivel Kailasam, Ying Wang, Jing-Chi Lo, Hsin-Fang Chang and Kuo-Chen Yeh* (2018) S-nitrosoglutathione works downstream of nitric oxide to mediate iron deficiency signaling in Arabidopsis The Plant Journal, DOI: 10.1111/tpj.13850


Several studies elucidated the transcriptional responses to iron (Fe) starvation, however, the Fe sensing and signal transduction machineries are poorly resolved thus far in plants. With this focus, by using chemical biology approach, we identified a small molecule R7, whose use inhibited the physiological and molecular responses of Fe starvation in Arabidopsis. R7 blocked the Fe starvation signaling from nitric oxide (NO) to the central transcription factor, FER-LIKE IRON-DEFICIENCY-INDUCED TRANSCRIPTION FACTOR (FIT). Exogenous applications of NO abduct, S-nitrosoglutathione (GSNO) were able to attenuate the R7 effect. R7 directly or indirectly decreased the endogenous GSNO levels in roots but not the NO levels. Our finding reveals that, under Fe limited situation the starvation signal from NO is passed to FIT through GSNO.
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*2018/10/08 10:30 AM
Dr. Bernhard Grimm (Dean of the Life Sciences Faculty, Professor (C4) and Head of Department of Plant Physiology at the Institute of Biology, Humboldt-Universität Berlin, Germany)
Green or red? Synthesis of chlorophyll and heme - Multiple posttranslational control of glutamyl-tRNA reductase, the rate limiting enzyme of tetrapyrrole biosynthesis
Auditorium A134, Agricultural Technology Building, Agricultural Biotechnology Research Center

*2018/10/29 10:30 AM
Dr. Ling Li (Assistant Professor, Department of Biological Sciences, Mississippi State University, USA)
A molecular tool to increase protein content and broad disease resistance in crops
Auditorium A134, Agricultural Technology Building, Agricultural Biotechnology Research Center

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