NDLI: Cadmium uptake and partitioning during the vegetative growth of sunflower exposed to low Cd$^{2+}$ concentrations in hydroponics

Content Provider	Springer Nature Link
Author	Cornu, J. Y. Bakoto, R. Bonnard, O. Bussière, S. Coriou, C. Thut, S. Visse, M. I. Nguyen, C.
Copyright Year	2016
Abstract	To characterize the response of sunflower to the low levels of Cd exposure encountered in agricultural soils.Plants were exposed in hydroponics to low concentrations of Cd (2.5 nM or 20 nM) and sampled at four vegetative stages (6, 9, 14 and 19 expanded leaves). Plant growth, root Cd absorbing properties and Cd partitioning between organs were monitored along with Cd content in the xylem sap.Sunflower growth was not limited when exposed to 20 nM Cd. The amount of Cd taken up by the plant roots as well as the rate of Cd loading in xylem sap increased in direct proportion to the concentration of Cd$^{2+}$ in the nutrient solution, suggesting that neither the root Cd absorbing capacities nor the root-to-shoot translocation of Cd were impacted by the level of Cd exposure. The partitioning of Cd between stem and leaves followed that of dry matter, regardless of the Cd treatment. The root-to-shoot partitioning of Cd at early growth stages differed from that prevailing later on.In an agricultural context, the partitioning of Cd between sunflower organs does not appear to be affected by the level of Cd exposure during vegetative growth.
Starting Page	263
Ending Page	275
Page Count	13
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	404
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer International Publishing
Publisher Date	2016-03-01
Publisher Place	Cham
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cadmium Low dose Root absorbing power Tolerance Translocation Xylem sap Plant Sciences Soil Science & Conservation Plant Physiology Ecology
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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