Water uptake by dry beans observed by micro-magnetic resonance imaging

Annals of Botany
Kaori KikuchiHiromi Kano

Abstract

Water uptake by dry kidney beans (Phaseolus vulgaris 'Rajma') and adzuki beans (Vigna angularis) was traced using micro-magnetic resonance imaging in order to elucidate the channel of water entry, the manner of water delivery and the timing of swelling of the seeds. Magnetic resonance images of beans absorbing water were continuously measured with the single-point imaging method for 16 h or 20 h at 15-min intervals. With this technique, it was possible to detect and visualize the location of water in the beans, at a low water content, in the initial stages of water entry. Water was taken up through a specified tissue, the lens, near the hilum, and distributed primarily to the testa. When water reached the radicle, it began to be incorporated into cotyledons with considerable swelling of the seeds. Water uptake took place within a short time for kidney beans. The initial process of water entry was associated with mechanical vibration of the seed. Rapid hydration of the testa and the swelling of the cotyledons were then observed. Water was supplied to cotyledons through the adaxial epidermis. In contrast, it took a long time, approx. 7 h, to activate the water channel of the lens for adzuki beans which have a tightly fitting test...Continue Reading

References

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May 17, 2003·Journal of Plant Physiology·Carol D FroeseJohn E Thompson
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Jul 6, 2004·Magnetic Resonance Imaging·Nobuaki IshidaHiromi Kano
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Citations

Dec 28, 2010·Plant & Cell Physiology·Tomoyuki TakaseHitoshi Suzuki
Feb 5, 2008·Genetics·Akito KagaDuncan A Vaughan
Aug 8, 2014·Frontiers in Plant Science·Petr SmýkalRichard D Thompson
Aug 21, 2014·Anais Da Academia Brasileira De Ciências·Tathiana E MasettoAna C R Fraiz
Aug 12, 2017·The New Phytologist·Eberhard MunzLjudmilla Borisjuk
Mar 28, 2012·The Plant Journal : for Cell and Molecular Biology·Ljudmilla BorisjukThomas Neuberger
Jul 17, 2014·Biological Research·Hugo M Ramírez-TobíasHumberto Vaquera H
Oct 4, 2018·The Review of Scientific Instruments·Parmesh GajjarPhilip J Withers
Jan 31, 2019·International Journal of Molecular Sciences·Katarzyna LechowskaMałgorzata Garnczarska
Apr 30, 2019·Royal Society Open Science·Kiing S WongMing K Tan
Feb 13, 2021·Plant Phenomics : a Science Partner Journal·J P Ribeiro-OliveiraM A Boselli

Related Concepts

Tachigalia
Magnetization Transfer Contrast Imaging
Cotyledon plant
Phaseolus acutifolius

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