Abstract
Potato (Solanum tuberosum L.) is one of the most widely cultivated crops in the world; however, drought is a major constraint to its productivity. Arbuscular mycorrhizal fungi (AMF) have been shown to improve plant resistance under conditions of water stress. However, their effects on potato plants are poorly studied. The purpose of this study was to evaluate the potential of two AMF inocula (two different strains of the AMF species Rhizophagus irregularis with different origin: Southern Spain MI1 and Tunisia MI2) on potato tolerance to drought stress through the determination of growth parameters, photosynthetic parameters, and antioxidant systems, under well-watered (WW; field capacity) and drought stress (DS; 50% of field capacity) conditions. Therefore, the experiment consisted of two factors: AMF strain and watering regime. The results showed that under drought stress conditions, AMF inoculation considerably stimulated photosynthetic performance as compared with non-inoculated controls. Moreover, leaf superoxide dismutase (SOD) and catalase (CAT) activities of inoculated plants were higher in WW conditions, but unchanged in DS conditions. Inoculated plants had significantly higher ascorbate peroxidase (APX) and glutathione reductase (GR) activities than non-inoculated plants under DS conditions. Also, expression of some antioxidant enzyme genes were upregulated by inoculation. Lipid peroxidation content of inoculated plants was lower than that of non-inoculated. Furthermore, there was a high positive correlation between mycorrhizal root colonization (RC) and almost all the measured parameters. The results of this study indicated that AMF inoculation could enhance potato plant tolerance to water stress through the induction of antioxidant mechanisms implicated in scavenging oxygen-free radicals.
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 7
Claim · model-written summary
AMF inoculation stimulated photosynthetic performance under drought.
- Taxon
- Potato
Solanum tuberosumt0 - Treatment
- AMF inoculatione0
- Interactor
- AMFe0symbiont
- Outcome
- photosynthetic performancee0
- Direction
- stimulatede0
- Comparator
- non-inoculated controlse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under drought stress conditions, AMF inoculation considerably stimulated photosynthetic performance as compared with non-inoculated controls”
t0“Potato (Solanum tuberosum L.)”
Claim · model-written summary
Inoculation raised leaf SOD and CAT activities under well watered conditions.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- inoculatede0
- Outcome
- leaf superoxide dismutase (SOD) and catalase (CAT) activitiese0
- Direction
- highere0
- Qualifier
- WW conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf superoxide dismutase (SOD) and catalase (CAT) activities of inoculated plants were higher in WW conditions, but unchanged in DS conditions”
t0“Potato (Solanum tuberosum L.)”
Claim · model-written summary
Inoculation left leaf SOD and CAT activities unchanged under drought.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- inoculatede0
- Outcome
- leaf superoxide dismutase (SOD) and catalase (CAT) activitiese0
- Direction
- unchangede0
- Qualifier
- DS conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf superoxide dismutase (SOD) and catalase (CAT) activities of inoculated plants were higher in WW conditions, but unchanged in DS conditions”
t0“Potato (Solanum tuberosum L.)”
Claim · model-written summary
Inoculated plants had higher APX and GR activities under drought.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- Inoculatede0
- Outcome
- ascorbate peroxidase (APX) and glutathione reductase (GR) activitiese0
- Direction
- highere0
- Comparator
- non-inoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculated plants had significantly higher ascorbate peroxidase (APX) and glutathione reductase (GR) activities than non-inoculated plants under DS conditions”
t0“Potato (Solanum tuberosum L.)”
Claim · model-written summary
Inoculation upregulated some antioxidant enzyme genes.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- inoculatione0
- Outcome
- expression of some antioxidant enzyme genese0
- Direction
- upregulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expression of some antioxidant enzyme genes were upregulated by inoculation”
t0“Potato (Solanum tuberosum L.)”
Claim · model-written summary
Inoculated plants had lower lipid peroxidation.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- inoculatede0
- Outcome
- Lipid peroxidation contente0
- Direction
- lowere0
- Comparator
- non-inoculatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lipid peroxidation content of inoculated plants was lower than that of non-inoculated”
t0“Potato (Solanum tuberosum L.)”
Claim · model-written summary
Root colonization correlated positively with almost all measured parameters.
- Taxon
- PotatoSolanum tuberosumt0
- Organ / stage
- roote0
- Outcome
- almost all the measured parameterse0
- Direction
- positive correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a high positive correlation between mycorrhizal root colonization (RC) and almost all the measured parameters”
t0“Potato (Solanum tuberosum L.)”
The same questions in other papers
inoculation · physiology: photosynthesis · Solanum tuberosum (potato)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- positive
5 papers more in this group
See all 9 papers →inoculation · molecular: expression · Solanum tuberosum (potato)Positive and negative results
8 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
7 papers more in this group
See all 11 papers →inoculation · physiology: antioxidant enzymes · Solanum tuberosum (potato)Positive and negative results
12 papers in the same direction as this paper · 2 in the opposite direction
- positive
- no effect
- negative
11 papers more in this group
See all 15 papers →mycorrhiza · physiology: photosynthesis · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
inoculation · physiology: oxidative · Solanum tuberosum (potato)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.