Induction of primary root curvature in radish seedlings in a static magnetic field

• Published in: Bioelectromagnetics
• Main Authors: Yano, Akira, Hidaka, Eiko, Fujiwara, Kazuhiro, Iimoto, Mitsuo
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 2001
• Subjects: South Pole; North Pole; South pole
• Online Access: http://dx.doi.org/10.1002/bem.38; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fbem.38; https://onlinelibrary.wiley.com/doi/pdf/10.1002/bem.38

Abstract Primary roots of radish ( Raphanus sativus L.) seedlings were exposed to an inhomogeneous static magnetic field generated by a permanent magnet, during continuous rotation on a 0.06 rpm clinostat, thereby reducing the unilateral influence of gravity. The roots responded tropically to the static magnetic field with the tropism appearing to be negative. These roots responded significantly ( P < 0.05) to the south pole of the magnet. The significant tropic response was found for a magnetic flux density of 13–68 mT, for a field gradient of 1.8–14.7 T/m, and for the product of magnetic field and field gradient of 0.023–1.0 T 2 /m. A small, but insignificant, response of the roots to the north pole has also been found. Bioelectromagnetics 22:194–199, 2001. © 2001 Wiley‐Liss, Inc.