Paper · 2025 · Horticulturae

A Biostimulant from Kappaphycus alvarezii Enhances the Growth and Development of Basil (Ocimum basilicum L.) Plants

Aline Nunes; Felipe de Souza Dutra; Lohan Rodrigues Brandão Santos; et al.

15
claims
30
verbatim quotes
7
citations
2
research areas
✓
Open access · cc-by

Abstract

This study evaluated the efficacy and optimal concentrations of Kappaphycus alvarezii biostimulant from São Paulo (Kal-SP) and Santa Catarina (Kal-SC) for the hydroponic cultivation of basil (Ocimum basilicum). Basil plants were grown with 1%, 3%, 5%, and 7% concentrations of each extract using distilled water as a control. The extracts were applied via weekly foliar sprays. Morphological and biochemical parameters, in addition to the biogenic amine profile, were evaluated. Morphologically, 3% Kal-SP increased plant height by 17.1% and length of the roots by 54.8%, while 3% and 5% Kal-SC enhanced node number by 95.2% and 120.2%, respectively. Biochemically, 5% Kal-SP and 1% and 7% Kal-SC maximized chlorophyll and carotenoid content, 5% Kal-SP and 5–7% Kal-SC increased soluble sugars, and 7% Kal-SP and 3–7% Kal-SC elevated starch. Amino acid levels were the highest with 7% Kal-SP and 5% Kal-SC. The biogenic amine profile was also modulated by the K. alvarezii extracts, demonstrating their ability to influence compounds of interest. The results suggest that 3% or higher concentrations of these extracts can be beneficially applied to basil cultivation, with potential variations depending on the seaweed’s geographic origin.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 15

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

3% Kal-SP increased basil plant height by 17.1%.

Treatment
3% Kal-SPe0
Outcome
plant heighte0
Direction
increasede0
Value
17.1%e0
Comparator
distilled watere2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“3% Kal-SP increased plant height by 17.1%”

✓ located verbatim in the source · abstract, characters 496–537 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
e2

“distilled water as a control”

✓ located verbatim in the source · abstract, characters 296–324 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

3% Kal-SP increased basil root length by 54.8%.

Treatment
3% Kal-SPe0
Outcome
length of the rootse0
Direction
increasede0
Value
54.8%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“3% Kal-SP increased plant height by 17.1% and length of the roots by 54.8%”

✓ located verbatim in the source · abstract, characters 496–570 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

3% Kal-SC enhanced basil node number by 95.2%.

Treatment
3%e0
Outcome
node numbere0
Direction
enhancede0
Value
95.2%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“3% and 5% Kal-SC enhanced node number by 95.2% and 120.2%, respectively”

✓ located verbatim in the source · abstract, characters 578–649 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

5% Kal-SC enhanced basil node number by 120.2%.

Treatment
5% Kal-SCe0
Outcome
node numbere0
Direction
enhancede0
Value
120.2%e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“3% and 5% Kal-SC enhanced node number by 95.2% and 120.2%, respectively”

✓ located verbatim in the source · abstract, characters 578–649 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

5% Kal-SP maximized basil chlorophyll and carotenoid content.

Treatment
5% Kal-SPe0
Outcome
chlorophyll and carotenoid contente0
Direction
maximizede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“5% Kal-SP and 1% and 7% Kal-SC maximized chlorophyll and carotenoid content”

✓ located verbatim in the source · abstract, characters 666–741 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

1% Kal-SC maximized basil chlorophyll and carotenoid content.

Treatment
1%e0
Outcome
chlorophyll and carotenoid contente0
Direction
maximizede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“5% Kal-SP and 1% and 7% Kal-SC maximized chlorophyll and carotenoid content”

✓ located verbatim in the source · abstract, characters 666–741 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

7% Kal-SC maximized basil chlorophyll and carotenoid content.

Treatment
7% Kal-SCe0
Outcome
chlorophyll and carotenoid contente0
Direction
maximizede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“5% Kal-SP and 1% and 7% Kal-SC maximized chlorophyll and carotenoid content”

✓ located verbatim in the source · abstract, characters 666–741 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

5% Kal-SP increased basil soluble sugars.

Treatment
5% Kal-SPe0
Outcome
soluble sugarse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“5% Kal-SP and 5–7% Kal-SC increased soluble sugars”

✓ located verbatim in the source · abstract, characters 743–793 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

5–7% Kal-SC increased basil soluble sugars.

Treatment
5–7% Kal-SCe0
Outcome
soluble sugarse0
Direction
increasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“5% Kal-SP and 5–7% Kal-SC increased soluble sugars”

✓ located verbatim in the source · abstract, characters 743–793 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

7% Kal-SP elevated basil starch.

Treatment
7% Kal-SPe0
Outcome
starche0
Direction
elevatede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“7% Kal-SP and 3–7% Kal-SC elevated starch”

✓ located verbatim in the source · abstract, characters 799–840 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

3–7% Kal-SC elevated basil starch.

Treatment
3–7% Kal-SCe0
Outcome
starche0
Direction
elevatede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“7% Kal-SP and 3–7% Kal-SC elevated starch”

✓ located verbatim in the source · abstract, characters 799–840 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

7% Kal-SP gave the highest basil amino acid levels.

Treatment
7% Kal-SPe0
Outcome
Amino acid levelse0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Amino acid levels were the highest with 7% Kal-SP and 5% Kal-SC”

✓ located verbatim in the source · abstract, characters 842–905 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

5% Kal-SC gave the highest basil amino acid levels.

Treatment
5% Kal-SCe0
Outcome
Amino acid levelse0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Amino acid levels were the highest with 7% Kal-SP and 5% Kal-SC”

✓ located verbatim in the source · abstract, characters 842–905 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

K. alvarezii extracts modulated the basil biogenic amine profile.

Treatment
K. alvarezii extractse0
Outcome
biogenic amine profilee0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The biogenic amine profile was also modulated by the K. alvarezii extracts”

✓ located verbatim in the source · abstract, characters 907–981 · show in text ↑
e1

“basil (Ocimum basilicum)”

✓ located verbatim in the source · abstract, characters 185–209 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors suggest applying extract concentrations of 3% or higher to basil cultivation.

Outcome
3% or higher concentrations of these extracts can be beneficially applied to basil cultivatione0
Qualifier
potential variations depending on the seaweed’s geographic origine0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“3% or higher concentrations of these extracts can be beneficially applied to basil cultivation, with potential variations depending on the seaweed’s geographic origin”

✓ located verbatim in the source · abstract, characters 1072–1238 · show in text ↑

Kappaphycus alvarezii · growth · Ocimum basilicum (basil)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

other · growth · Ocimum basilicum (basil)Positive and negative results

19 papers: 15 positive, 4 negative or no effect

14 papers in the same direction as this paper · 4 in the opposite direction

  1. negative
  2. negative
  3. no effect

15 papers more in this group

See all 19 papers →

other · physiology: osmolytes · Ocimum basilicum (basil)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

other · molecular: metabolites · Ocimum basilicum (basil)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

other · physiology: pigments · Ocimum basilicum (basil)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. 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.