Paper · 2026 · Phycology

Application of Spirulina platensis and Chlorella vulgaris for Improved Growth and Bioactive Compound Accumulation in Achillea fragrantissima In Vitro

Hind Salih Alrajeh; Fadia El Sherif; Salah Khattab

8
claims
16
verbatim quotes
1
citations
3
research areas
✓
Open access · cc-by

Abstract

Achillea fragrantissima is a medicinal herb valued for its essential oils and bioactive compounds. Microalgae, such as Spirulina platensis and Chlorella vulgaris, show considerable promise as natural biostimulants due to their high levels of protein, minerals, vitamins, and fatty acids. The individual or compound effects of S. platensis and C. vulgaris on the growth, photosynthetic pigments, and essential oil composition of A. fragrantissima in vitro were measured in this study. According to chemical analysis, S. platensis contains large amounts of protein and several minerals, including phosphorus, manganese, and iron. Conversely, C. vulgaris showed a higher percentage of carbohydrates, lipids, phytol, aldehydes, and fatty acid esters. The combination of 1.0 g·L−1 S. platensis and 0.5 g·L−1 C. vulgaris tended to stimulate callus formation. Meanwhile, the 0.5 g·L−1 C. vulgaris treatment enhanced shoot and leaf development and increased total photosynthetic pigment content. Analysis of essential oils from A. fragrantissima produced under different treatments demonstrated that combined treatments with S. platensis and C. vulgaris had greatly improved the valuable bioactive substances, such as phytol, oleic acid, 2H-pyran, and thymine. These results show the effectiveness of using S. platensis and C. vulgaris extracts as eco-friendly biostimulants.

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Claims 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The combination of 1.0 g·L−1 S. platensis and 0.5 g·L−1 C. vulgaris tended to stimulate callus formation.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Treatment
combination of 1.0 g·L−1 S. platensis and 0.5 g·L−1 C. vulgarise1
Interactor
S. platensisLimnospira platensise1other
Second interactor
C. vulgarisChlorella vulgarise1other
Outcome
callus formatione1
Direction
stimulatee1

Not reportedComparator

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Limnospira platensis
Limnospira platensis · Interactor · picture from its Wikimedia Commons categoryThis photo has been taken by Matthieu Sontag (User:Mirgolth) and released under the licenses stated below. You are free to use it for any purpose as long as you · CC BY-SA 3.0 · Wikimedia Commons ↗
Chlorella vulgaris
Chlorella vulgaris · Second interactorja:User:NEON / User:NEON_ja · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The combination of 1.0 g·L−1 S. platensis and 0.5 g·L−1 C. vulgaris tended to stimulate callus formation”

✓ located verbatim in the source · abstract, characters 747–851 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.5 g·L−1 C. vulgaris treatment enhanced shoot and leaf development.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Treatment
0.5 g·L−1 C. vulgarise2
Interactor
C. vulgarisChlorella vulgarise2other
Outcome
shoot and leaf developmente2
Direction
enhancede2

Not reportedComparator

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Chlorella vulgaris
Chlorella vulgaris · Interactorja:User:NEON / User:NEON_ja · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e2

“the 0.5 g·L−1 C. vulgaris treatment enhanced shoot and leaf development and increased total photosynthetic pigment content”

✓ located verbatim in the source · abstract, characters 864–986 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 0.5 g·L−1 C. vulgaris treatment increased total photosynthetic pigment content.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Treatment
0.5 g·L−1 C. vulgarise2
Interactor
C. vulgarisChlorella vulgarise2other
Outcome
total photosynthetic pigment contente2
Direction
increasede2

Not reportedComparator

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Chlorella vulgaris
Chlorella vulgaris · Interactorja:User:NEON / User:NEON_ja · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e2

“the 0.5 g·L−1 C. vulgaris treatment enhanced shoot and leaf development and increased total photosynthetic pigment content”

✓ located verbatim in the source · abstract, characters 864–986 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

S. platensis contains large amounts of protein and several minerals.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Interactor
S. platensisLimnospira platensise3other
Outcome
large amounts of protein and several mineralse3

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Limnospira platensis
Limnospira platensis · Interactor · picture from its Wikimedia Commons categoryThis photo has been taken by Matthieu Sontag (User:Mirgolth) and released under the licenses stated below. You are free to use it for any purpose as long as you · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e3

“S. platensis contains large amounts of protein and several minerals, including phosphorus, manganese, and iron”

✓ located verbatim in the source · abstract, characters 516–626 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

C. vulgaris had a higher percentage of carbohydrates and lipids.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Interactor
C. vulgarisChlorella vulgarise4other
Outcome
percentage of carbohydrates, lipidse4
Direction
highere4

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Chlorella vulgaris
Chlorella vulgaris · Interactorja:User:NEON / User:NEON_ja · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“C. vulgaris showed a higher percentage of carbohydrates, lipids, phytol, aldehydes, and fatty acid esters”

✓ located verbatim in the source · abstract, characters 640–745 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

C. vulgaris had a higher percentage of phytol, aldehydes and fatty acid esters.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Interactor
C. vulgarisChlorella vulgarise4other
Outcome
phytol, aldehydes, and fatty acid esterse4
Direction
highere4

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Chlorella vulgaris
Chlorella vulgaris · Interactorja:User:NEON / User:NEON_ja · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e4

“C. vulgaris showed a higher percentage of carbohydrates, lipids, phytol, aldehydes, and fatty acid esters”

✓ located verbatim in the source · abstract, characters 640–745 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined S. platensis and C. vulgaris treatments greatly improved phytol, oleic acid and 2H-pyran in the essential oil.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Treatment
combined treatments with S. platensis and C. vulgarise5
Interactor
S. platensisLimnospira platensise5other
Second interactor
C. vulgarisChlorella vulgarise5other
Outcome
phytol, oleic acid, 2H-pyrane5
Direction
greatly improvede5

Not reportedComparator

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Limnospira platensis
Limnospira platensis · Interactor · picture from its Wikimedia Commons categoryThis photo has been taken by Matthieu Sontag (User:Mirgolth) and released under the licenses stated below. You are free to use it for any purpose as long as you · CC BY-SA 3.0 · Wikimedia Commons ↗
Chlorella vulgaris
Chlorella vulgaris · Second interactorja:User:NEON / User:NEON_ja · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“combined treatments with S. platensis and C. vulgaris had greatly improved the valuable bioactive substances, such as phytol, oleic acid, 2H-pyran, and thymine”

✓ located verbatim in the source · abstract, characters 1092–1251 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined S. platensis and C. vulgaris treatments greatly improved thymine in the essential oil.

Taxon
Achillea fragrantissimaAchillea fragrantissimat0
Treatment
combined treatments with S. platensis and C. vulgarise5
Interactor
S. platensisLimnospira platensise5other
Second interactor
C. vulgarisChlorella vulgarise5other
Outcome
thyminee5
Direction
greatly improvede5

Not reportedComparator

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

Achillea fragrantissima
Achillea fragrantissima · Taxonyelena_antipova · CC BY 4.0 · Wikimedia Commons ↗
Limnospira platensis
Limnospira platensis · Interactor · picture from its Wikimedia Commons categoryThis photo has been taken by Matthieu Sontag (User:Mirgolth) and released under the licenses stated below. You are free to use it for any purpose as long as you · CC BY-SA 3.0 · Wikimedia Commons ↗
Chlorella vulgaris
Chlorella vulgaris · Second interactorja:User:NEON / User:NEON_ja · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“combined treatments with S. platensis and C. vulgaris had greatly improved the valuable bioactive substances, such as phytol, oleic acid, 2H-pyran, and thymine”

✓ located verbatim in the source · abstract, characters 1092–1251 · show in text ↑
t0

“Achillea fragrantissima In Vitro”

✓ located verbatim in the source · title, characters 117–149 · show in text ↑