Abstract
To evaluate phosphorus (P)–stress–induced relative growth responses, P-efficiency characteristics, P remobilization, and redesign in root architectural systems, Brassica cultivars were grown with sparingly soluble rock phosphate and calcium phosphate [Ca3(PO4)2] or with low/high P supply in solution and sand culture experiments. Tested cultivars showed considerable genetic diversity in biomass accumulation, concentration and contents of P, P-stress factor (PSF), and P-efficiency characteristics [P-utilization efficiency (PUE), P efficiency (PE), and P-efficiency ratio (PER)]. Statistically significant correlations were observed between P efficiency and growth parameters. Elongation rates of primary roots decreased but the length of lateral roots and branched zone elongation rates increased under P starvation. Cultivars remobilized P from metabolically inactive to active sites in P-stressed plants that may have helped low-P-tolerant cultivars to establish a better rooting system, which provided basis for enhanced P-use efficiency and tolerance against P stress. Cultivars depicting high P efficiency and low PSF values were more tolerant and are a better choice to grow under P-stress environments.
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Claims 9
Claim · model-written summary
Brassica cultivars showed genetic diversity in biomass accumulation and phosphorus concentration and contents.
- Outcome
- biomass accumulation, concentration and contents of Pe0
BrassicaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“Tested cultivars showed considerable genetic diversity in biomass accumulation, concentration and contents of P”
Claim · model-written summary
Brassica cultivars differed in P-stress factor and P-efficiency characteristics.
- Outcome
- P-stress factor (PSF), and P-efficiency characteristicse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“P-stress factor (PSF), and P-efficiency characteristics [P-utilization efficiency (PUE), P efficiency (PE), and P-efficiency ratio (PER)]”
Claim · model-written summary
P efficiency correlated significantly with growth parameters in Brassica.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“Statistically significant correlations were observed between P efficiency and growth parameters.”
Claim · model-written summary
P starvation decreased primary-root elongation rates in Brassica.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“Elongation rates of primary roots decreased but the length of lateral roots and branched zone elongation rates increased under P starvation.”
Claim · model-written summary
P starvation increased lateral-root length and branched-zone elongation rates in Brassica.
- Treatment
- P starvatione0
- Outcome
- length of lateral roots and branched zone elongation ratese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“the length of lateral roots and branched zone elongation rates increased under P starvation”
Claim · model-written summary
Brassica cultivars remobilized P from metabolically inactive to active sites under P stress.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“Cultivars remobilized P from metabolically inactive to active sites in P-stressed plants”
Claim · model-written summary
P remobilization may have helped tolerant Brassica cultivars establish better roots, supporting enhanced P-use efficiency and tolerance.
- Outcome
- enhanced P-use efficiency and tolerance against P stresse0
- Qualifier
- remobilized P from metabolically inactive to active sitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“Cultivars remobilized P from metabolically inactive to active sites in P-stressed plants that may have helped low-P-tolerant cultivars to establish a better rooting system, which provided basis for enhanced P-use efficiency and tolerance against P stress.”
Claim · model-written summary
Brassica cultivars with high P efficiency and low PSF values were more tolerant.
- Outcome
- tolerante0
- Direction
- moree0
- Qualifier
- high P efficiency and low PSF valuese0
- Comparator
- P efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“Cultivars depicting high P efficiency and low PSF values were more tolerant”
Claim · model-written summary
Cultivars with high P efficiency and low PSF are recommended for P-stress environments.
- Outcome
- a better choice to grow under P-stress environmentse0
- Qualifier
- high P efficiency and low PSF valuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Brassica”
e0“Cultivars depicting high P efficiency and low PSF values were more tolerant and are a better choice to grow under P-stress environments.”
The same questions in other papers
phosphorus · growth · BrassicaPositive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- negative
- positive
2 papers more in this group
See all 6 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.