Abstract
The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage. Results indicated that both ACF and NaCl treatments at high concentrations led to an adverse effect on callus growth. Fresh and dry weights were significantly decreased, in contrast with control treatment (untreated callus).Growth reduction was accompanied with an increase of browning intensity. A stimulatory effect on callus growth was observed at low concentration of NaCl (68.45 mM). The exposed callus generally tends to accumulate a significant amount of free proline as well as hydrogen peroxide. This accumulation increased significantly with the increase of ACF and NaCl concentrations, whereas the opposite trend was seen in the activity of Catalase. Additionally, RAPD-PCR technique utilized to define any DNA rearrangements that may have been induced by ACF and NaCl treatments. Results of RAPD analysis detected DNA polymorphism usingOPA01-OPA03 primers which revealed appearance and disappearance of fragments compared to control profile. Thus suggesting genetic rearrangements which could be the cause of the observed morphological and biochemical variations in date palm callus exposed to biotic and abiotic stresses.
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Claims 8
Claim · model-written summary
High concentrations of Aspergillus niger culture filtrate decreased fresh and dry weights of date palm callus compared with untreated callus.
- Taxon
- date palm (Phoenix dactylifera L.)
Phoenix dactyliferae0 - Material
- Hillawi cv.e0
- Organ / stage
- calluse0
- Treatment
- Aspergillus niger culture filtrates (ACF)e0
- Outcome
- Fresh and dry weightse1
- Direction
- decreasede1
- Comparator
- control treatment (untreated callus)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage”
e1“Fresh and dry weights were significantly decreased, in contrast with control treatment (untreated callus)”
Claim · model-written summary
High concentrations of sodium chloride decreased fresh and dry weights of date palm callus compared with untreated callus.
- Taxon
- date palm (Phoenix dactylifera L.)Phoenix dactyliferae0
- Material
- Hillawi cv.e0
- Organ / stage
- calluse0
- Treatment
- sodium chloride (68.45; 137 and 205.34 mM)e0
- Outcome
- Fresh and dry weightse1
- Direction
- decreasede1
- Comparator
- control treatment (untreated callus)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage”
e1“Fresh and dry weights were significantly decreased, in contrast with control treatment (untreated callus)”
Claim · model-written summary
Growth reduction of date palm callus was accompanied by an increase of browning intensity.
- Taxon
- date palm (Phoenix dactylifera L.)Phoenix dactyliferae0
- Outcome
- browning intensitye2
- Direction
- increasee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage”
e2“Growth reduction was accompanied with an increase of browning intensity”
Claim · model-written summary
A low concentration of NaCl (68.45 mM) stimulated date palm callus growth.
- Taxon
- date palm (Phoenix dactylifera L.)Phoenix dactyliferae0
- Treatment
- low concentration of NaCl (68.45 mM)e3
- Outcome
- callus growthe3
- Direction
- stimulatorye3
- Value
- 68.45 mMe3
- Comparator
- control treatment (untreated callus)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage”
e1“Fresh and dry weights were significantly decreased, in contrast with control treatment (untreated callus)”
e3“A stimulatory effect on callus growth was observed at low concentration of NaCl (68.45 mM)”
Claim · model-written summary
Free proline and hydrogen peroxide accumulation increased with ACF and NaCl concentrations in date palm callus.
- Taxon
- date palm (Phoenix dactylifera L.)Phoenix dactyliferae0
- Treatment
- ACF and NaCl concentrationse4
- Outcome
- free proline as well as hydrogen peroxidee4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage”
e4“The exposed callus generally tends to accumulate a significant amount of free proline as well as hydrogen peroxide. This accumulation increased significantly with the increase of ACF and NaCl concentrations”
Claim · model-written summary
Catalase activity decreased with increasing ACF and NaCl concentrations in date palm callus.
- Taxon
- date palm (Phoenix dactylifera L.)Phoenix dactyliferae0
- Treatment
- ACF and NaCl concentrationse4
- Outcome
- activity of Catalasee5
- Direction
- decreaseinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage”
e4“The exposed callus generally tends to accumulate a significant amount of free proline as well as hydrogen peroxide. This accumulation increased significantly with the increase of ACF and NaCl concentrations”
e5“whereas the opposite trend was seen in the activity of Catalase”
Claim · model-written summary
RAPD analysis detected DNA polymorphism, with appearance and disappearance of fragments, in stressed date palm callus compared with the control profile.
- Taxon
- date palm (Phoenix dactylifera L.)Phoenix dactyliferae0
- Outcome
- DNA polymorphisme6
- Qualifier
- appearance and disappearance of fragmentse6
- Comparator
- control profilee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The in vitro responses of date palm (Phoenix dactylifera L.) callus of Hillawi cv. to Aspergillus niger culture filtrates (ACF) (10 and 20%) and sodium chloride (68.45; 137 and 205.34 mM) treatments were investigated at proliferation stage”
e6“Results of RAPD analysis detected DNA polymorphism usingOPA01-OPA03 primers which revealed appearance and disappearance of fragments compared to control profile”
Claim · model-written summary
Genetic rearrangements may cause the observed morphological and biochemical variations in date palm callus.
- Taxon
- date palmPhoenix dactyliferae7
- Outcome
- morphological and biochemical variationse7
- Qualifier
- genetic rearrangementse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“suggesting genetic rearrangements which could be the cause of the observed morphological and biochemical variations in date palm callus exposed to biotic and abiotic stresses”
The same questions in other papers
sodium chloride · growth · Phoenix dactylifera (date palm)Results differ
2 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- negative
- negative
2 papers more in this group
See all 6 papers →Aspergillus niger · growth · Phoenix dactylifera (date palm)Positive and negative results
1 in the opposite direction
- 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.