Abstract
Abstract T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe and therefore can be used as test genotypes to locate sites of Fe uptake or to characterize changes that occur in roots in response to Fe stress (Fe deficiency). T3238fer does not respond to Fe stress. Release of hydrogen ions and reduction of Fe 3+ to Fe 2+ are two primary responses of T3238FER roots to Fe stress. Fe reduction sites were predominately in the young lateral roots, and between the regions of root elongation and maturation of the primary root. The use of BDPS (bathophenanthrolinedisulfonate) to trap Fe 2+ did not affect the release of H + ions or reduction by T3238FER roots. BPDS did not decrease Fe uptake until it exceeded the Fe concentration in the nutrient solution. A sevenfold increase in BPDS caused a threefold decrease in Fe taken up by the plant. Fe 3+ is reduced to Fe 2+ at root sites accessible to BPDS. Adding Zn decreased the response to Fe stress. Iron stress initiates the development of lateral roots, and we propose that most Fe enters the plant through these roots. The iron moves through protoxylem into the metaxylem of the primary root and then to the top of the plant as Fe citrate. Root environmental factors that are competitive or inhibit Fe‐stress response, or genotypes that fail to respond to Fe stress, contribute to the development of Fe deficiency in plants.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Release of H+ ions and reduction of Fe3+ to Fe2+ are primary responses of T3238FER roots to Fe stress.
- Taxon
- tomato plants
Solanum lycopersicume1 - Material
- T3238FERe2
- Organ / stage
- rootse2
- Treatment
- Fe stresse2
- Outcome
- Release of hydrogen ions and reduction of Fe 3+ to Fe 2+e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“Release of hydrogen ions and reduction of Fe 3+ to Fe 2+ are two primary responses of T3238FER roots to Fe stress”
Claim · model-written summary
Genotype T3238fer does not respond to Fe stress.
- Taxon
- tomato plantsSolanum lycopersicume1
- Material
- T3238fere2
- Outcome
- does not respond to Fe stresse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“T3238fer does not respond to Fe stress”
Claim · model-written summary
Fe reduction sites were predominantly in young lateral roots and between the root elongation and maturation zones of the primary root.
- Taxon
- tomato plantsSolanum lycopersicume1
- Organ / stage
- young lateral rootse2
- Outcome
- Fe reduction sitese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“Fe reduction sites were predominately in the young lateral roots, and between the regions of root elongation and maturation of the primary root”
Claim · model-written summary
BDPS did not affect H+ ion release or Fe reduction by T3238FER roots.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- BDPS (bathophenanthrolinedisulfonate)e2
- Outcome
- the release of H + ions or reductione2
- Direction
- did not affecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“The use of BDPS (bathophenanthrolinedisulfonate) to trap Fe 2+ did not affect the release of H + ions or reduction by T3238FER roots”
Claim · model-written summary
BPDS did not decrease Fe uptake below the Fe concentration in the nutrient solution.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- BPDSe2
- Outcome
- Fe uptakee2
- Direction
- did not decreasee2
- Qualifier
- until it exceeded the Fe concentration in the nutrient solutione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“BPDS did not decrease Fe uptake until it exceeded the Fe concentration in the nutrient solution”
Claim · model-written summary
A sevenfold increase in BPDS decreased Fe uptake by the plant threefold.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- A sevenfold increase in BPDSe2
- Outcome
- Fe taken up by the plante2
- Direction
- decreasee2
- Value
- threefolde2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“A sevenfold increase in BPDS caused a threefold decrease in Fe taken up by the plant”
Claim · model-written summary
Fe3+ is reduced to Fe2+ at root sites accessible to BPDS.
- Taxon
- tomato plantsSolanum lycopersicume1
- Organ / stage
- root sitese2
- Outcome
- Fe 3+ is reduced to Fe 2+e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“Fe 3+ is reduced to Fe 2+ at root sites accessible to BPDS”
Claim · model-written summary
Adding Zn decreased the response to Fe stress.
- Taxon
- tomato plantsSolanum lycopersicume1
- Treatment
- Adding Zne2
- Outcome
- the response to Fe stresse2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“Adding Zn decreased the response to Fe stress”
Claim · model-written summary
Iron stress initiates development of lateral roots.
- Taxon
- tomato plantsSolanum lycopersicume1
- Organ / stage
- lateral rootse2
- Treatment
- Iron stresse2
- Outcome
- development of lateral rootse2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“Iron stress initiates the development of lateral roots”
Claim · model-written summary
Most Fe is proposed to enter the plant through these roots.
- Taxon
- tomato plantsSolanum lycopersicume1
- Organ / stage
- these rootse2
- Outcome
- most Fe enters the plante2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“we propose that most Fe enters the plant through these roots”
Claim · model-written summary
Iron moves through protoxylem and metaxylem of the primary root and then to the shoot top as Fe citrate.
- Taxon
- tomato plantsSolanum lycopersicume1
- Organ / stage
- metaxylem of the primary roote2
- Compound
- Fe citratee2
- Outcome
- The iron movese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“The iron moves through protoxylem into the metaxylem of the primary root and then to the top of the plant as Fe citrate”
Claim · model-written summary
Root environmental factors and genotypes failing to respond to Fe stress are proposed to contribute to Fe deficiency.
- Taxon
- tomato plantsSolanum lycopersicume1
- Outcome
- development of Fe deficiencye2
- Qualifier
- Root environmental factors that are competitive or inhibit Fe‐stress responsee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“T3238fer (Fe‐inefficient) and T3238FER (Fe‐efficient) tomato plants differ in their ability to utilize Fe”
e2“Root environmental factors that are competitive or inhibit Fe‐stress response, or genotypes that fail to respond to Fe stress, contribute to the development of Fe deficiency in plants”
The same questions in other papers
zinc atom · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
18 papers more in this group
See all 22 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.