Circadian Variation of Root Water Status in Three Herbaceous Species Assessed by Portable NMR - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Plants Year : 2021

Circadian Variation of Root Water Status in Three Herbaceous Species Assessed by Portable NMR

Abstract

Roots are at the core of plant water dynamics. Nonetheless, root morphology and functioning are not easily assessable without destructive approaches. Nuclear Magnetic Resonance (NMR), and particularly low-field NMR (LF-NMR), is an interesting noninvasive method to study water in plants, as measurements can be performed outdoors and independent of sample size. However, as far as we know, there are no reported studies dealing with the water dynamics in plant roots using LF-NMR. Thus, the aim of this study is to assess the feasibility of using LF-NMR to characterize root water status and water dynamics non-invasively. To achieve this goal, a proof-of-concept study was designed using well-controlled environmental conditions. NMR and ecophysiological measurements were performed continuously over one week on three herbaceous species grown in rhizotrons. The NMR parameters measured were either the total signal or the transverse relaxation time T2. We observed circadian variations of the total NMR signal in roots and in soil and of the root slow relaxing T2 value. These results were consistent with ecophysiological measurements, especially with the variation of fluxes between daytime and nighttime. This study assessed the feasibility of using LF-NMR to evaluate root water status in herbaceous species
Fichier principal
Vignette du fichier
Nuixe_M_2021_Plants.pdf (2.33 Mo) Télécharger le fichier
Origin Files produced by the author(s)

Dates and versions

hal-03200198 , version 1 (16-04-2021)

Licence

Identifiers

Cite

Magali Nuixe, Amidou Sissou Trao, Shannan Blystone, J.-M. Bonny, Robert Falcimagne, et al.. Circadian Variation of Root Water Status in Three Herbaceous Species Assessed by Portable NMR. Plants, 2021, 10 (4), ⟨10.3390/plants10040782⟩. ⟨hal-03200198⟩
70 View
21 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More