Abstract
Magnesium (Mg) is an essential element for the growth of both plants and bacteria. Low availability of Mg in agriculture can limit crop productivity and quality. In addition to direct effects on plant growth, limited Mg supply may also impact biological dinitrogen (N 2 ) fixation in nodules formed from symbiotic interactions between legumes and rhizobial bacteria. To date, the physiological mechanisms involved in Mg‐dependent nodulation remain largely unknown. The objectives of this work were to assess how Mg supply affects nodule growth and development in symbiotic systems, and to test if any observed changes in nodule and soybean are correlated with Mg supply. Here, we found that external Mg supply enhanced nodule growth under nitrogen (N) limited conditions, and subsequently improved N 2 fixation and soybean growth. Mg supply altered neither nodule structure nor Mg homeostasis, but remarkably promoted nodule enlargement, resulting in an increase in the number of big nodules. In addition, high Mg supply decreased starch and sucrose accumulation in leaves, and increased their concentrations in roots, which consequently enhanced carbohydrate import into the rhizobia infection zone of nodules. In this study, Mg was shown to promote nodule growth in soybean. This Mg‐promoted nodule growth is derived from Mg‐facilitated alteration of carbohydrate partitioning and transport into nodules.
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 13
Claim · model-written summary
External magnesium enhanced soybean nodule growth under limited nitrogen.
- Taxon
- soybean
Glycine maxt0 - Treatment
- external Mg supplye0
- Outcome
- nodule growthe0
- Direction
- enhancede0
- Qualifier
- nitrogen (N) limited conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“external Mg supply enhanced nodule growth under nitrogen (N) limited conditions”
t0“soybean”
Claim · model-written summary
Magnesium supply improved nitrogen fixation.
- Taxon
- soybeanGlycine maxt0
- Treatment
- external Mg supplye1
- Outcome
- N 2 fixatione0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subsequently improved N 2 fixation and soybean growth.”
e1“external Mg supply enhanced nodule growth”
t0“soybean”
Claim · model-written summary
Magnesium supply improved soybean growth.
- Taxon
- soybeanGlycine maxe0
- Treatment
- external Mg supplye1
- Outcome
- soybean growthe0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“subsequently improved N 2 fixation and soybean growth.”
e1“external Mg supply enhanced nodule growth”
Claim · model-written summary
Magnesium supply did not alter nodule structure.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Mg supplye0
- Outcome
- nodule structuree0
- Direction
- altered neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg supply altered neither nodule structure nor Mg homeostasis”
t0“soybean”
Claim · model-written summary
Magnesium supply did not alter magnesium homeostasis.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Mg supplye0
- Outcome
- Mg homeostasise0
- Direction
- altered neithere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mg supply altered neither nodule structure nor Mg homeostasis”
t0“soybean”
Claim · model-written summary
Magnesium supply enlarged soybean nodules.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Mg supplye1
- Outcome
- nodule enlargemente0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“remarkably promoted nodule enlargement”
e1“Mg supply altered neither nodule structure nor Mg homeostasis”
t0“soybean”
Claim · model-written summary
Magnesium supply increased the number of large nodules.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Mg supplye1
- Outcome
- number of big nodulese0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an increase in the number of big nodules”
e1“Mg supply altered neither nodule structure nor Mg homeostasis”
t0“soybean”
Claim · model-written summary
High magnesium decreased starch accumulation in leaves.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- leavese0
- Treatment
- high Mg supplye0
- Outcome
- starche0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high Mg supply decreased starch and sucrose accumulation in leaves”
t0“soybean”
Claim · model-written summary
High magnesium decreased sucrose accumulation in leaves.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- leavese0
- Treatment
- high Mg supplye0
- Outcome
- sucrose accumulatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high Mg supply decreased starch and sucrose accumulation in leaves”
t0“soybean”
Claim · model-written summary
High magnesium increased starch concentration in roots.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- rootse0
- Treatment
- high Mg supplye0
- Outcome
- starche0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high Mg supply decreased starch and sucrose accumulation in leaves, and increased their concentrations in roots”
t0“soybean”
Claim · model-written summary
High magnesium increased sucrose concentration in roots.
- Taxon
- soybeanGlycine maxt0
- Organ / stage
- rootse0
- Treatment
- high Mg supplye0
- Outcome
- sucrosee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high Mg supply decreased starch and sucrose accumulation in leaves, and increased their concentrations in roots”
t0“soybean”
Claim · model-written summary
High magnesium enhanced carbohydrate import into the rhizobial infection zone.
- Taxon
- soybeanGlycine maxt0
- Treatment
- high Mg supplye1
- Interactor
- rhizobiae0symbiont
- Outcome
- carbohydrate importe0
- Qualifier
- rhizobia infection zone of nodulese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“enhanced carbohydrate import into the rhizobia infection zone of nodules”
e1“high Mg supply decreased starch and sucrose accumulation in leaves”
t0“soybean”
Claim · model-written summary
The authors attribute magnesium promoted nodule growth to altered carbohydrate partitioning and transport.
- Taxon
- soybeanGlycine maxt0
- Outcome
- nodule growthe0
- Qualifier
- Mg‐facilitated alteration of carbohydrate partitioning and transport into nodulese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This Mg‐promoted nodule growth is derived from Mg‐facilitated alteration of carbohydrate partitioning and transport into nodules.”
t0“soybean”
The same questions in other papers
magnesium atom · nutrient: content · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 papers →magnesium atom · growth · Glycine max (soybean)Positive and negative results
20 papers in the same direction as this paper · 8 in the opposite direction
- positive
- no effect
- negative
25 papers more in this group
See all 29 papers →magnesium atom · symbiosis · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- positive
magnesium atom · quality: sugar starch · Glycine max (soybean)Results agree
2 papers in the same direction as this paper
- positive
- positive
magnesium atom · molecular: metabolites · Glycine max (soybean)Results agree
7 papers in the same direction as this paper
- positive
- positive
- positive
4 papers more in this group
See all 8 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.