التفاصيل البيبلوغرافية
| العنوان: |
In vivo quantitative NMR imaging of fruit tissues during growth using Spoiled Gradient Echo sequence. |
| المؤلفون: |
Kenouche, S.1,2 samir.kenouche@univ-montp2.fr, Perrier, M.3, Bertin, N.4, Larionova, J.3, Ayadi, A.1, Zanca, M.1,5, Long, J.3, Bezzi, N.2, Stein, P.C.1,6, Guari, Y.3, Cieslak, M.7, Godin, C.7, Goze-Bac, C.1 |
| المصدر: |
Magnetic Resonance Imaging (0730725X). Dec2014, Vol. 32 Issue 10, p1418-1427. 10p. |
| مصطلحات موضوعية: |
*MAGNETIC resonance imaging, *FRUIT development, *AGRONOMY, *CONTRAST media, *MANNITOL, *NANOPARTICLES, *BIOCOMPATIBILITY |
| مستخلص: |
Nondestructive studies of physiological processes in agronomic products require increasingly higher spatial and temporal resolutions. Nuclear Magnetic Resonance (NMR) imaging is a non-invasive technique providing physiological and morphological information on biological tissues. The aim of this study was to design a robust and accurate quantitative measurement method based on NMR imaging combined with contrast agent (CA) for mapping and quantifying water transport in growing cherry tomato fruits. A multiple flip-angle Spoiled Gradient Echo (SGE) imaging sequence was used to evaluate the intrinsic parameters maps M 0 and T 1 of the fruit tissues. Water transport and paths flow were monitored using Gd 3 + /[ Fe ( CN ) 6 ] 3 − / D − mannitol nanoparticles as a tracer. This dynamic study was carried out using a compartmental modeling. The CA was preferentially accumulated in the surrounding tissues of columella and in the seed envelopes. The total quantities and the average volume flow of water estimated are: 198 mg , 1.76 mm 3 / h for the columella and 326 mg , 2.91 mm 3 / h for the seed envelopes. We demonstrate in this paper that the NMR imaging technique coupled with efficient and biocompatible CA in physiological medium has the potential to become a major tool in plant physiology research. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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