Related Experiment Video
Updated: Feb 3, 2026
09:21
Multipronged Phenotyping Approaches to Characterize Sugarcane Root Systems
Published on: August 17, 2022
1.6K
Revisiting Fe/S interplay in tomato: A split-root approach to study the systemic and local responses
Eleonora Coppa1, Silvia Celletti1, Youry Pii2
1DAFNE, University of Tuscia, Via S.C. de Lellis, 01100, Viterbo, Italy.
Summary
Sulfur deficiency enhances iron uptake in tomato plants by increasing iron-reducing capacity in roots. This highlights a crucial interaction between sulfur and iron nutrition for plant growth.
Area of Science:
- Plant physiology
- Nutrient interactions
- Molecular biology
Background:
- Previous studies suggest an interplay between sulfur (S) and iron (Fe) in plants.
- Understanding how plant S status affects Fe uptake is crucial for crop nutrition.
Purpose of the Study:
- To investigate if plant S status and external S concentration modify Fe uptake and accumulation in tomato.
- To elucidate the molecular mechanisms underlying S and Fe interactions in root systems.
Main Methods:
- A split-root system was employed using Fe-deficient conditions.
- One root compartment was S-sufficient, while the other was S-free.
- Analysis included S metabolites, enzyme activities, gene expression (SlST1.1, SlFRO1, SlIRT1), and FeIII-reducing capacity.
Main Results:
- S deficiency in part of the root system decreased S content but enhanced ATPsulfurylase and O-acetylserine(thiol)lyase activity, and SlST1.1 expression.
- The S- and Fe-deficient root side showed a 40% increase in FeIII-reducing capacity and SlFRO1 gene expression.
- SlFER transcription factor regulation mirrored SlFRO1, while SlIRT1 expression was unaffected by S supply.
Conclusions:
- Plant S status significantly influences Fe uptake capability, particularly under combined S and Fe deficiency.
- Enhanced Fe reduction via SlFRO1 is a key response to S deficiency, mediated by SlFER.
- Distinct regulatory pathways exist for SlFRO1 and SlIRT1 in response to nutrient availability.
More Related Videos
Related Concept Videos
01:23Root Loci for Positive-Feedback Systems
350
The Hartley oscillator is a positive feedback system that sustains oscillations by feeding the output back to the input in phase, thereby reinforcing the signal. Positive feedback systems can be viewed as negative feedback systems with inverted feedback signals. In these systems, the root locus encompasses all points on the s-plane where the angle of the system transfer function equals 360 degrees.
The construction rules for the root locus in positive feedback systems are similar to those in...
The construction rules for the root locus in positive feedback systems are similar to those in...
350
01:13¹H NMR: Complex Splitting
1.9K
A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
1.9K
02:26Responses to Gravity and Touch
41.9K
Gravitropism: Plant Responses to Gravity
41.9K
03:02Primary and Secondary Growth in Roots and Shoots
60.5K
Vascular plants, which account for over 90% of the Earth’s vegetation, all undergo primary growth—which lengthens roots and shoots. Many land plants, notably woody plants, also undergo secondary growth—which thickens roots and shoots.
60.5K
02:41Responses to Drought and Flooding
12.1K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
12.1K
02:02Responses to Salt Stress
14.6K
Salt stress—which can be triggered by high salt concentrations in a plant’s environment—can significantly affect plant growth and crop production by influencing photosynthesis and the absorption of water and nutrients.
14.6K