IJE TRANSACTIONS A: Basics Vol. 29, No. 1 (January 2016) 132-136    Article in Press

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R. Khanbabaie
( Received: December 20, 2015 – Accepted: January 28, 2016 )

Abstract    Natural indicators of the electrical polarity of a direct current (DC) source is limited to semiconductor based diodes and transistors. Recently a novel bio-natural indicator of the polarity of a DC source have been reported. Mimosa Pudica or sensitive plant is found to be a natural detector of a DC source polarity, however the mechanism underlying this phenomenon is not known. This paper aims to develop a physical and engineering based model to explain the mechanism of this phenomenon. This model suggests that spatial placement of ion release sites along the pathway of electric signal is crucial to obtain polarity effects. A combination of this spatial placement of ion release sites and a delay in the opening of K+ ion channel with respect to Cl- ion channel can explain this one-way switch behavior.


Keywords    Bio-natural polarity indicator, DC electric polarity, Electrical Polarity detector, One-way switch


چکیده    تشخیص ­دهنده­ های های قطب­های الکتریکی یک منبع جریان مستقیم فقط به دیودها و ترانزیستورهای بر پایه نیمه ­رساناها محدود می ­شوند. اخیرا یک نشانگر زیستی-طبیعی جدید قطب­های الکتریکی یک منبع جریان مستقیم گزارش شده است. مشخص شده است گیاه حساس (میموزا پودیکا) یک نشانگر طبیعی و زنده قطب­های الکتریکی است، ولی سازوکار عملکرد آن مشخص نیست. این مقاله یک مدل فیزیکی-مهندسی را برای توضیح این پدیده ارائه می­کند. این مدل پیشنهاد می­کند که محل فضایی سایت­ های آزادسازی یون در طول مسیر سیگنال الکتریکی جهت دست­یابی به اثرات قطبش ضروری است. ترکیبی از محل قرارگیری سایت­های آزادسازی یون و یک تاخیر در بازشدن کانال یون پتاسیم نسبت به کانال یون سدیم می­تواند این رفتار سوئیچ یک طرفه را توضیح دهد



1.     Sasikumar, M. and Pandian, S.C., "Modified bi-directional ac/dc power converter with power factor correction", International Journal of Engineering Transactions B: ApplicationsVol. 25, No. 3, (2012), 175-180.

2.     Sharifi, M. and Adibi, A., "Semiconductor device simulation by a new method of solving poisson, laplace and schrodinger equations (research note)", International Journal of Engineering Transactions A; Basics,  Vol. 13, No. 1, (1998), 89.

3.     Morris, A.S., Measurement and instrumentation principles., IOP Publishing. (2001)

4.     Fromm, J. and Lautner, S., "Electrical signals and their physiological significance in plants", Plant, Cell & Environment,  Vol. 30, No. 3, (2007), 249-257.

5.     Abe, T., "Chloride ion efflux during an action potential in the main pulvinus ofmimosa pudica", The Botanical Magazine= Shokubutsu-gaku-zasshi,  Vol. 94, No. 4, (1981), 379-383.

6.     Roblin, G. and Fleurat-Lessard, P., "Redistribution of potassium, chloride and calcium during the gravitropically induced movement of mimosa pudica pulvinus", Planta,  Vol. 170, No. 2, (1987), 242-248.

7.     Yao, H., Xu, Q. and Yuan, M., "Actin dynamics mediates the changes of calcium level during the pulvinus movement of mimosa pudica", Plant Signaling & Behavior,  Vol. 3, No. 11, (2008), 954-960.

8.     Volkov, A.G., Foster, J.C., Ashby, T.A., Walker, R.K., Johnson, J.A. and Markin, V.S., "Mimosa pudica: Electrical and mechanical stimulation of plant movements", Plant, Cell & Environment,  Vol. 33, No. 2, (2010), 163-173.

9.     Araghi, A., Khanbabaie, R., Araghi, S. and Shams-Baboli, A., "Mimosa pudica, a natural bio-electrical polarity indicator", International Journal of Plant Research,  Vol. 4, No. 3, (2014), 84-87.

10.   Stoeckel, H. and Takeda, K., "Calcium-sensitivity of the plasmalemmal delayed rectifier potassium current suggests that calcium influx in pulvinar protoplasts from mimosa pudica l. Can be revealed by hyperpolarization", The Journal of Membrane Biology,  Vol. 146, No. 2, (1995), 201-209.

11.   Sullivan, H., "Ionic channels of excitable membranes", Neurology,  Vol. 42, No. 7, (1992), 1439-1451-a.

12.   van Bel, A.J. and Ehlers, K., "Electrical signalling via plasmodesmata", Plasmodesmata,  (2004), 263-278.

13.   Hodgkin, A.L. and Huxley, A.F., "A quantitative description of membrane current and its application to conduction and excitation in nerve", The Journal of Physiology,  Vol. 117, No. 4, (1952), 500.

14.   Applewhite, P.B., "Behavioral plasticity in the sensitive plant, mimosa", Behavioral Biology,  Vol. 7, No. 1, (1972), 47-53.

15.   Volkov, A.G., Foster, J.C. and Markin, V.S., "Molecular electronics in pinnae of mimosa pudica", Plant Signaling & Behavior,  Vol. 5, No. 7, (2010), 826-831.

16.   Volkov, A.G., Foster, J.C. and Markin, V.S., "Signal transduction in mimosa pudica: Biologically closed electrical circuits", Plant, Cell & Environment,  Vol. 33, No. 5, (2010), 816-827.

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