Abstract
AIMS: To investigate the effects of arbuscular mycorrhizal fungi (AMF) species on the absorption and distribution of mineral nutrients in soybean cultivars under drought stress, an experiment was carried out through a factorial method in the form of randomized complete blocks with six replicates in 2020. METHODS AND RESULTS: Experimental factors include: drought stress at three irrigation levels (well-watered [WW], medium stress [MS] and severe stress [SS], i.e., 100%, 70% and 40% FC), soybean cultivars at two levels (Sepideh and Williams), and mycorrhizae application at four levels (nonapplication, Funneliformis mosseae, Glomus hoi, Rhizophagus intraradices). The results indicated that drought stress increased the concentration of grain potassium (K) and sodium (Na), leaf K, stem and leaf Na, and decreased the concentrations of grain phosphorus (P), copper (Cu), and zinc (Zn), leaf P, stem and leaf Cu, and manganese (Mn). In addition, there was no significant difference in terms of concentrations of grain K. The highest reduction was observed under SS conditions (40% FC). G. hoi colonization increased the concentrations of grain P and Zn, leaf K and Cu and stem Mn under SS conditions (40% FC). In addition, compared to Sepideh cv., Williams cv. showed higher stress resistance. Seed oil content decreased in the plants exposed to drought stress. Severe drought treatments have a deleterious effect on seed fatty acid composition, resulting in enhanced linoleic, oleic and linolenic acids. CONCLUSION: AMF colonization is a useful tool for improving the plant nutrient uptake, fatty acid profile, efficiency of resource utilization and stabilizing yield, hence reducing the production risks of crops grown under drought stress conditions. It was concluded that AMF colonization should be employed to help alleviate the adverse effects of drought stress. SIGNIFICANCE OF STUDY: AMF colonization is an effective biotechnological strategy that can alter nutrient uptake and fatty acid composition and enhance oil quality in soybean cultivars under drought conditions.
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Claims 10
Claim · model-written summary
Drought raised grain potassium and sodium, leaf potassium, and stem and leaf sodium.
- Taxon
- soybean cultivars
Glycine maxt0 - Treatment
- drought stresse0
- Outcome
- grain potassium (K) and sodium (Na), leaf K, stem and leaf Nae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress increased the concentration of grain potassium (K) and sodium (Na), leaf K, stem and leaf Na”
t0“soybean cultivars”
Claim · model-written summary
Drought lowered grain phosphorus, copper, and zinc, leaf phosphorus, stem and leaf copper, and manganese.
- Taxon
- soybean cultivarsGlycine maxt0
- Treatment
- drought stresse1
- Outcome
- grain phosphorus (P), copper (Cu), and zinc (Zn), leaf P, stem and leaf Cu, and manganese (Mn)e0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased the concentrations of grain phosphorus (P), copper (Cu), and zinc (Zn), leaf P, stem and leaf Cu, and manganese (Mn)”
e1“drought stress increased”
t0“soybean cultivars”
Claim · model-written summary
Grain potassium concentration showed no significant difference.
- Taxon
- soybean cultivarsGlycine maxt0
- Outcome
- concentrations of grain Ke0
- Direction
- no significant differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant difference in terms of concentrations of grain K”
t0“soybean cultivars”
Claim · model-written summary
Severe drought produced the greatest reduction.
- Taxon
- soybean cultivarsGlycine maxt0
- Outcome
- highest reductione0
- Direction
- reductione0
- Qualifier
- SS conditions (40% FC)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest reduction was observed under SS conditions (40% FC)”
t0“soybean cultivars”
Claim · model-written summary
G. hoi colonization increased grain phosphorus and zinc, leaf potassium and copper, and stem manganese under severe stress.
- Taxon
- soybean cultivarsGlycine maxt0
- Treatment
- G. hoi colonizatione0
- Interactor
- G. hoiGlomus hoie0symbiont
- Outcome
- grain P and Zn, leaf K and Cu and stem Mne0
- Direction
- increasede0
- Qualifier
- SS conditions (40% FC)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“G. hoi colonization increased the concentrations of grain P and Zn, leaf K and Cu and stem Mn under SS conditions (40% FC)”
t0“soybean cultivars”
Claim · model-written summary
Williams showed greater stress resistance than Sepideh.
- Taxon
- soybean cultivarsGlycine maxt0
- Material
- Williams cv.e0
- Outcome
- stress resistancee0
- Direction
- highere0
- Comparator
- Sepideh cv.e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“compared to Sepideh cv., Williams cv. showed higher stress resistance”
t0“soybean cultivars”
Claim · model-written summary
Drought decreased seed oil content.
- Taxon
- soybean cultivarsGlycine maxt0
- Treatment
- drought stresse0
- Outcome
- Seed oil contente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed oil content decreased in the plants exposed to drought stress”
t0“soybean cultivars”
Claim · model-written summary
Severe drought enhanced linoleic, oleic, and linolenic acids in seed fatty acid composition.
- Taxon
- soybean cultivarsGlycine maxt0
- Treatment
- Severe drought treatmentse0
- Outcome
- linoleic, oleic and linolenic acidse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Severe drought treatments have a deleterious effect on seed fatty acid composition, resulting in enhanced linoleic, oleic and linolenic acids”
t0“soybean cultivars”
Claim · model-written summary
The authors conclude AMF colonization can improve nutrient uptake, fatty acid profile, resource use, and yield stability under drought.
- Taxon
- soybean cultivarsGlycine maxt0
- Interactor
- AMFe0symbiont
- Outcome
- improving the plant nutrient uptake, fatty acid profile, efficiency of resource utilization and stabilizing yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF colonization is a useful tool for improving the plant nutrient uptake, fatty acid profile, efficiency of resource utilization and stabilizing yield, hence reducing the production risks of crops grown under drought stress conditions”
t0“soybean cultivars”
Claim · model-written summary
The authors recommend AMF colonization to alleviate drought effects.
- Taxon
- soybean cultivarsGlycine maxt0
- Interactor
- AMFe0symbiont
- Outcome
- AMF colonization should be employede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AMF colonization should be employed to help alleviate the adverse effects of drought stress”
t0“soybean cultivars”
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