Abstract
Introduction The reduced N doses in plant fertilization, combined with the influence of plant growth-promoting bacteria (PGPB), to obtain ecofriendly crops and their derived products can be a significant challenge. Purple cauliflower is an exotic variety that can generate higher profits for farmers and greater interest among consumers seeking novel and healthy foods. Purple cauliflower florets are edible, while the leaves are discarded because they are by-products. Methods The aim of this research was to investigate the combined effect of PGPB ( Azotobacter salinestris strain CECT9690) and three different N doses supplied in the nutrient solution (30%, 60%, and 100%) on plant growth and the quality of florets and by-products. Plant height, total shoot and floret weight, and % dry weight in florets and leaves were improved by A. salinestris inoculation under limited doses of N. Results and discussion The sugar content in the leaves of plants grown with a limited N dose (30%) and inoculated with PGPB increased by 51% compared to the control. PGPB inoculation increased proteins in the leaves (by 30% with 100% N supply, 33% with 60% N supply, and 16% with 30% N supply). Additionally, PGPB inoculation enhanced potassium (26%) and iron (34%) in leaves of plants under limited N supply. These findings indicate that the combined use of reduced N supply and PGPB inoculation may be considered an ecofriendly strategy to enhance the growth and quality of purple cauliflower, while boosting the valorization of its by-products.
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Claims 9
Claim · model-written summary
A. salinestris inoculation improved plant height, total shoot and floret weight under limited N.
- Taxon
- purple cauliflowerst0
- Treatment
- A. salinestris inoculatione1
- Interactor
- A. salinestrisAzotobacter salinestrise1symbiont
- Outcome
- Plant height, total shoot and floret weighte1
- Direction
- improvede1
- Qualifier
- under limited doses of Ne1
Not reportedComparator
Verbatim
t0“valorization of purple cauliflowers”
e1“Plant height, total shoot and floret weight, and % dry weight in florets and leaves were improved by A. salinestris inoculation under limited doses of N”
Claim · model-written summary
A. salinestris inoculation improved the percentage dry weight in florets and leaves under limited N.
- Taxon
- purple cauliflowerst0
- Treatment
- A. salinestris inoculatione1
- Interactor
- A. salinestrisAzotobacter salinestrise1symbiont
- Outcome
- % dry weight in florets and leavese1
- Direction
- improvede1
- Qualifier
- under limited doses of Ne1
Not reportedComparator
Verbatim
t0“valorization of purple cauliflowers”
e1“Plant height, total shoot and floret weight, and % dry weight in florets and leaves were improved by A. salinestris inoculation under limited doses of N”
Claim · model-written summary
PGPB inoculation with a limited N dose increased leaf sugar content by 51% relative to the control.
Verbatim
t0“valorization of purple cauliflowers”
e2“The sugar content in the leaves of plants grown with a limited N dose (30%) and inoculated with PGPB increased by 51% compared to the control”
Claim · model-written summary
PGPB inoculation increased leaf protein by 30% under 100% N supply.
- Taxon
- purple cauliflowerst0
- Treatment
- 100% N supplye3
- Interactor
- PGPBe3symbiont
- Outcome
- proteins in the leavese3
- Direction
- increasede3
- Value
- 30%e3
Not reportedComparator
Verbatim
t0“valorization of purple cauliflowers”
e3“PGPB inoculation increased proteins in the leaves (by 30% with 100% N supply, 33% with 60% N supply, and 16% with 30% N supply)”
Claim · model-written summary
PGPB inoculation increased leaf protein by 33% under 60% N supply.
- Taxon
- purple cauliflowerst0
- Treatment
- 60% N supplye3
- Interactor
- PGPBe3symbiont
- Outcome
- proteins in the leavese3
- Direction
- increasede3
- Value
- 33%e3
Not reportedComparator
Verbatim
t0“valorization of purple cauliflowers”
e3“PGPB inoculation increased proteins in the leaves (by 30% with 100% N supply, 33% with 60% N supply, and 16% with 30% N supply)”
Claim · model-written summary
PGPB inoculation increased leaf protein by 16% under 30% N supply.
- Taxon
- purple cauliflowerst0
- Treatment
- 30% N supplye3
- Interactor
- PGPBe3symbiont
- Outcome
- proteins in the leavese3
- Direction
- increasede3
- Value
- 16%e3
Not reportedComparator
Verbatim
t0“valorization of purple cauliflowers”
e3“PGPB inoculation increased proteins in the leaves (by 30% with 100% N supply, 33% with 60% N supply, and 16% with 30% N supply)”
Claim · model-written summary
PGPB inoculation enhanced leaf potassium by 26% under limited N supply.
- Taxon
- purple cauliflowerst0
- Treatment
- limited N supplye4
- Interactor
- PGPBe4symbiont
- Outcome
- potassiume4
- Direction
- enhancede4
- Value
- 26%e4
Not reportedComparator
Verbatim
t0“valorization of purple cauliflowers”
e4“PGPB inoculation enhanced potassium (26%) and iron (34%) in leaves of plants under limited N supply”
Claim · model-written summary
PGPB inoculation enhanced leaf iron by 34% under limited N supply.
- Taxon
- purple cauliflowerst0
- Treatment
- limited N supplye4
- Interactor
- PGPBe4symbiont
- Outcome
- irone4
- Direction
- enhancede4
- Value
- 34%e4
Not reportedComparator
Verbatim
t0“valorization of purple cauliflowers”
e4“PGPB inoculation enhanced potassium (26%) and iron (34%) in leaves of plants under limited N supply”
Claim · model-written summary
Combining reduced N supply with PGPB inoculation may be an ecofriendly strategy to enhance growth and quality of purple cauliflower.
Verbatim
e5“the combined use of reduced N supply and PGPB inoculation may be considered an ecofriendly strategy to enhance the growth and quality of purple cauliflower”