Supplementary calcium ameliorates ammonium toxicity by improving water status in agriculturally important species

AoB Plants
Elvia Hernández-GómezIrán Alia-Tajacal

Abstract

Fertilization of agricultural plants with ammonium [Formula: see text] is often desirable because it is less susceptible to leaching than nitrate [Formula: see text] reducing environmental pollution, risk to human health and economic loss. However, a number of important agricultural species exhibit a reduction in growth when fertilized with [Formula: see text] and increasing the tolerance to [Formula: see text] may be of importance for the establishment of sustainable agricultural systems. The present study explored the feasibility of using calcium (Ca) to increase the tolerance of bell pepper (Capsicum annuum) to [Formula: see text] fertilization. Although [Formula: see text] at proportions ≥25 % of total nitrogen (N) decreased leaf dry mass (DM), supplementary Ca ameliorated this decrease. Increasing [Formula: see text] resulted in decreased root hydraulic conductance (Lo) and root water content (RWC), suggesting that water uptake by roots was impaired. The [Formula: see text]-induced reductions in Lo and RWC were mitigated by supplementary Ca. Ammonium induced increased damage to the cell membranes through lipid peroxidation, causing increased electrolyte leakage; Ca did not reduce lipid peroxidation and resulted in increase...Continue Reading

References

Aug 10, 2000·Environmental Health Perspectives·V Castranova, V Vallyathan
Mar 29, 2001·Proceedings of the National Academy of Sciences of the United States of America·D T BrittoH J Kronzucker
Feb 16, 2008·Physiologia Plantarum·María Dolores Domínguez-ValdiviaJose Fernando Moran
Mar 15, 2013·Journal of Plant Physiology·Igor SetiénJosé María Estavillo
Jul 31, 2013·Plant Physiology·Leonie Steinhorst, Jörg Kudla
Nov 5, 2014·Plant, Cell & Environment·Guowei LiVéronique Santoni
Jan 13, 2015·Plant Science : an International Journal of Experimental Plant Biology·András BittsánszkyTamas Komives

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Citations

Apr 27, 2020·Physiologia Plantarum·Toyosi IjatoBenjamin Neuhäuser

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