Corn salad (Valerianella locusta (L.) Laterr.) growth in a water-saving floating system as affected by iron and sulfate availability
- 19 October 2010
- journal article
- research article
- Published by Wiley in Journal of the Science of Food and Agriculture
- Vol. 91 (2), 344-354
- https://doi.org/10.1002/jsfa.4192
Abstract
BACKGROUND: Unbalanced nutrient availability causes disequilibrated plant growth, which can result in a worsening of harvested product quality, such as high nitrate content in edible tissues. To cope with this problem, improved knowledge of the mechanisms involved in nutrient acquisition and regulation is necessary. For this purpose the responses of acquisition mechanisms of N, Fe and S were studied as a function of Fe and S availability using two corn salad cultivars grown hydroponically, considering also aspects related to N metabolism. RESULTS: The results showed that an increase in Fe or S availability enhanced nitrate uptake and assimilation, which in turn increased biomass production of leaves with lower nitrate content. In particular, high S availability exerted a positive effect (gene expression and functionality) both on the uptake and metabolism of N and on Fe acquisition mechanisms. CONCLUSION: The data presented here show close interactions between N, S and Fe, highlighting that relevant improvements in yield and quality from soilless culture might also be obtained through appropriate adjustments of nutrient availability. In this respect, concerning the role of S in the acquisition mechanisms of N and Fe and in N metabolism, its level of availability should be taken into high consideration for equilibrated plant growth. Copyright © 2010 Society of Chemical IndustryKeywords
This publication has 39 references indexed in Scilit:
- Co-ordinated expression of amino acid metabolism in response to N and S deficiency during wheat grain fillingJournal of Experimental Botany, 2008
- qpcR: an R package for sigmoidal model selection in quantitative real-time polymerase chain reaction analysisBioinformatics, 2008
- Sulfur starvation reduces phytosiderophores release by iron-deficient barley plantsSoil Science and Plant Nutrition, 2006
- Iron deficiency induces sulfate uptake and modulates redistribution of reduced sulfur pool in barley plantsFunctional Plant Biology, 2006
- Two plasma membrane H+-ATPase genes are differentially expressed in iron-deficient cucumber plantsPlant Physiology and Biochemistry, 2005
- Leaf Responses of Young Iron‐Inefficient Maize Plants to Sulfur DeprivationJournal of Plant Nutrition, 2003
- Rapid disruption of nitrogen metabolism and nitrate transport in spinach plants deprived of sulphateJournal of Experimental Botany, 2001
- Influence of sulfur on apparent N-use efficiency, yield and quality of oilseed rape (Brassica napus L.) grown on a calcareous soilEuropean Journal of Agronomy, 2000
- Iron reduction in iron‐stressed plants ofActinidia deliciosagenotypes: Involvement of PM Fe(lll)‐Chelate reductase and H+‐ATPase activityJournal of Plant Nutrition, 1999
- Soil humic substances stimulate proton release by intact oat seedling rootsJournal of Plant Nutrition, 1997