Abstract
Abstract Plants colonized with arbuscular mycorrhizal (AM) fungi generally have greater growth and acquisition of mineral nutrients, and often have greater ability to withstand drought compared to nonmycorrhizal (nonAM) plants. This study determined effects of water stress (WS) versus no WS (nonWS) and the AM fungus Glomus monosporum (AM vs nonAM) on growth, acquisition of phosphorus (P), zinc (Zn), copper (Cu), manganese (Mn), and iron (Fe), and water use in two durum wheat (Triticum durum Desf.) cultivars exhibiting differences in resistance to WS. Plants were grown on soil [low P silty clay (Typic Xerochrept, pH=8.1)] and sand mixtures in a greenhouse. Shoot and root dry matter (DM), total root length (RL), and root colonization with AM for plants grown under non WS were higher than for plants grown under WS. Much of the reduction in DM was overcome by AM plants grown under WS. The 'drought‐resistant' wheat cultivar CR057 had higher AM root colonization than the 'drought‐sensitive' cultivar CR006 when grown with and without WS. Concentrations of P were lower and Zn, Cu, Mn, and Fe were higher in shoots of plants grown under WS compared to non WS. Nutrient contents were greater in AM than in nonAM plants, and these differences were greater under WS than under nonWS conditions. The AM plants had higher water use efficiency (WUE, g DM kg‐1 water evapotranspired) values than nonAM plants when grown under WS. The cultivar CR057 generally had higher WUE values than CR006. The results of this study indicated that AM plants had greater tolerance to drought stress than nonAM plants.
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Claims 10
Claim · model-written summary
Non-stressed plants had higher shoot and root dry matter and root length than stressed plants.
- Taxon
- durum wheat
Triticum turgidum subsp. durume1 - Treatment
- non WSe0
- Outcome
- Shoot and root dry matter (DM), total root length (RL)e0
- Direction
- highere0
- Comparator
- WSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoot and root dry matter (DM), total root length (RL), and root colonization with AM for plants grown under non WS were higher than for plants grown under WS”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Non-stressed wheat had higher AM root colonization than stressed wheat.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Treatment
- non WSe0
- Interactor
- AMe0symbiont
- Outcome
- root colonization with AMe0
- Direction
- highere0
- Comparator
- WSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“root colonization with AM for plants grown under non WS were higher than for plants grown under WS”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
AM colonization overcame much of the water-stress reduction in dry matter.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Treatment
- AMe0
- Interactor
- AMe0symbiont
- Outcome
- DMe0
- Direction
- overcomee0
- Qualifier
- under WSe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Much of the reduction in DM was overcome by AM plants grown under WS”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
CR057 had higher AM root colonization than CR006 with and without water stress.
- Taxon
- wheat
Triticum aestivume0 - Material
- CR057e0
- Treatment
- with and without WSe0
- Interactor
- AMe0symbiont
- Outcome
- AM root colonizatione0
- Direction
- highere0
- Comparator
- CR006e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 'drought‐resistant' wheat cultivar CR057 had higher AM root colonization than the 'drought‐sensitive' cultivar CR006 when grown with and without WS”
Claim · model-written summary
Water stress lowered shoot P concentration.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Organ / stage
- shootse0
- Treatment
- WSe0
- Outcome
- Concentrations of Pe0
- Direction
- lowere0
- Comparator
- non WSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of P were lower and Zn, Cu, Mn, and Fe were higher in shoots of plants grown under WS compared to non WS”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Water stress raised shoot Zn, Cu, Mn and Fe concentrations.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Organ / stage
- shootse0
- Treatment
- WSe0
- Outcome
- Zn, Cu, Mn, and Fee0
- Direction
- highere0
- Comparator
- non WSe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentrations of P were lower and Zn, Cu, Mn, and Fe were higher in shoots of plants grown under WS compared to non WS”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
AM plants had greater nutrient contents than nonAM plants, particularly under water stress.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Treatment
- AMe0
- Interactor
- AMe0symbiont
- Outcome
- Nutrient contentse0
- Direction
- greatere0
- Qualifier
- differences were greater under WS than under nonWS conditionse0
- Comparator
- nonAMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nutrient contents were greater in AM than in nonAM plants, and these differences were greater under WS than under nonWS conditions”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
Under water stress, AM plants had higher water use efficiency than nonAM plants.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Treatment
- AMe0
- Interactor
- AMe0symbiont
- Outcome
- water use efficiencye0
- Direction
- highere0
- Qualifier
- under WSe0
- Comparator
- nonAMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The AM plants had higher water use efficiency (WUE, g DM kg‐1 water evapotranspired) values than nonAM plants when grown under WS”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
CR057 generally had higher water use efficiency than CR006.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Material
- CR057e0
- Outcome
- WUEe0
- Direction
- highere0
- Comparator
- CR006e0
Not reportedTreatment
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cultivar CR057 generally had higher WUE values than CR006”
e1“durum wheat (Triticum durum Desf.)”
Claim · model-written summary
AM plants had greater drought tolerance than nonAM plants.
- Taxon
- durum wheatTriticum turgidum subsp. durume1
- Treatment
- AMe0
- Interactor
- AMe0symbiont
- Outcome
- tolerance to drought stresse0
- Direction
- greatere0
- Comparator
- nonAMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AM plants had greater tolerance to drought stress than nonAM plants”
e1“durum wheat (Triticum durum Desf.)”
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