Abstract
L.), an important member of the Alliaceae family, is also sensitive to drought and maximizing the yield of garlic bulbs is largely dependent on water availability. The objective of this study was to determine the effects of drought stress on morphological and physiological characteristics, as well as on phenolic, sugar, inulin and free amino acid content and antioxidant activity in two Croatian garlic ecotypes, 'Istarski crveni' (IC) and Istarski bijeli (IB). Drought was induced by using polyethylene glycol 8000 (PEG) solution (-0.6 MPa) starting 21 days after clove planting and lasted for 20 days. Drought reduced plant height, number of leaves and plant weight, but increased root length in both ecotypes compared to the control treatment. Among the physiological parameters, significant differences were observed between the two ecotypes studied in the spectral characteristics of the leaves, namely reflection in red, green and blue, VAL, values of the vegetation indices related to the chlorophyll content (CHI, GI), and the anthocyanin content (ARI). Ecotype IC showed higher antioxidant activity in the control treatment due to higher total phenolic content (TPC), but under drought conditions higher DPPH radical scavenging activity was determined in ecotype IB and higher values of FRAP in IC. Sucrose and glucose generally decreased under drought, while inulin increased in IB but decreased in IC. Total free amino acid content increased under drought in both ecotypes. In conclusion, drought tolerance of IB might be associated with increased accumulation of inulin and higher levels of amino acids, especially those shown to contribute to drought resistance. In IC, drought tolerance is associated with an increase in some amino acid compounds and better root growth in depth, probably due to a more efficient translocation of sucrose to the underground part of the plant.
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Claims 15
Claim · model-written summary
Drought reduced plant height in both ecotypes.
- Taxon
- Garlic
Allium sativumt0 - Treatment
- droughte0
- Outcome
- plant heighte0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Drought reduced plant height, number of leaves and plant weight, but increased root length in both ecotypes compared to the control treatment.”
Claim · model-written summary
Drought reduced number of leaves in both ecotypes.
- Taxon
- GarlicAllium sativumt0
- Treatment
- droughte0
- Outcome
- number of leavese0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Drought reduced plant height, number of leaves and plant weight, but increased root length in both ecotypes compared to the control treatment.”
Claim · model-written summary
Drought reduced plant weight in both ecotypes.
- Taxon
- GarlicAllium sativumt0
- Treatment
- droughte0
- Outcome
- plant weighte0
- Direction
- reducede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Drought reduced plant height, number of leaves and plant weight, but increased root length in both ecotypes compared to the control treatment.”
Claim · model-written summary
Drought increased root length in both ecotypes.
- Taxon
- GarlicAllium sativumt0
- Treatment
- droughte0
- Outcome
- root lengthe0
- Direction
- increasede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Drought reduced plant height, number of leaves and plant weight, but increased root length in both ecotypes compared to the control treatment.”
Claim · model-written summary
The two garlic ecotypes differed significantly in leaf spectral reflectance and chlorophyll and anthocyanin indices.
- Taxon
- GarlicAllium sativumt0
- Outcome
- spectral characteristics of the leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“significant differences were observed between the two ecotypes studied in the spectral characteristics of the leaves, namely reflection in red, green and blue, VAL, values of the vegetation indices related to the chlorophyll content (CHI, GI), and the anthocyanin content (ARI)”
Claim · model-written summary
IC had higher antioxidant activity in the control due to higher total phenolic content.
- Taxon
- GarlicAllium sativumt0
- Material
- ICe0
- Compound
- total phenolic contente0
- Outcome
- antioxidant activitye0
- Direction
- highere0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Ecotype IC showed higher antioxidant activity in the control treatment due to higher total phenolic content (TPC)”
Claim · model-written summary
Under drought, IB had higher DPPH radical scavenging activity.
- Taxon
- GarlicAllium sativumt0
- Material
- IBe0
- Outcome
- DPPH radical scavenging activitye0
- Direction
- highere0
- Setting
- drought conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“under drought conditions higher DPPH radical scavenging activity was determined in ecotype IB”
Claim · model-written summary
Under drought, IC had higher FRAP values.
- Taxon
- GarlicAllium sativumt0
- Material
- ICe0
- Outcome
- values of FRAPe0
- Direction
- highere0
- Setting
- drought conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“under drought conditions higher DPPH radical scavenging activity was determined in ecotype IB and higher values of FRAP in IC”
Claim · model-written summary
Sucrose generally decreased under drought.
- Taxon
- GarlicAllium sativumt0
- Treatment
- droughte0
- Outcome
- Sucrosee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Sucrose and glucose generally decreased under drought”
Claim · model-written summary
Glucose generally decreased under drought.
- Taxon
- GarlicAllium sativumt0
- Treatment
- droughte0
- Outcome
- glucosee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Sucrose and glucose generally decreased under drought”
Claim · model-written summary
Inulin increased under drought in IB.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Sucrose and glucose generally decreased under drought, while inulin increased in IB but decreased in IC.”
Claim · model-written summary
Inulin decreased under drought in IC.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Sucrose and glucose generally decreased under drought, while inulin increased in IB but decreased in IC.”
Claim · model-written summary
Total free amino acid content increased under drought in both ecotypes.
- Taxon
- GarlicAllium sativumt0
- Treatment
- droughte0
- Outcome
- Total free amino acid contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“Total free amino acid content increased under drought in both ecotypes.”
Claim · model-written summary
IB drought tolerance may be associated with inulin and amino acid accumulation.
- Taxon
- GarlicAllium sativumt0
- Material
- IBe0
- Compound
- inuline0
- Outcome
- drought tolerancee0
- Qualifier
- higher levels of amino acidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“drought tolerance of IB might be associated with increased accumulation of inulin and higher levels of amino acids”
Claim · model-written summary
IC drought tolerance was associated with amino acid increase and deeper root growth.
- Taxon
- GarlicAllium sativumt0
- Material
- ICe0
- Outcome
- drought tolerancee0
- Qualifier
- better root growth in depthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Garlic Ecotypes”
e0“In IC, drought tolerance is associated with an increase in some amino acid compounds and better root growth in depth”
The same questions in other papers
drought · growth · Allium sativum (garlic)Results differ
5 in the opposite direction
- negative
- negative
- negative
2 papers more in this group
See all 6 papers →drought · molecular: metabolites · Allium sativum (garlic)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.