Abstract
The influences of arbuscular mycorrhizal (AM) fungus on growth, gas exchange, chlorophyll concentration, chlorophyll fluorescence and water status of maize (Zea mays L.) plants were studied in pot culture under well-watered and drought stress conditions. The maize plants were grown in a sand and black soil mixture for 4 weeks, and then exposed to drought stress for 4 weeks. Drought stress significantly decreased AM colonization and total dry weight. AM symbioses notably enhanced net photosynthetic rate and transpiration rate, but decreased intercellular CO2 concentration of maize plants regardless of water treatments. Mycorrhizal plants had higher stomatal conductance than non-mycorrhizal plants under drought stress. The concentrations of chlorophyll were higher in mycorrhizal than non-mycorrhizal plants under drought stress. AM colonization significantly increased maximal fluorescence, maximum quantum efficiency of PSII photochemistry and potential photochemical efficiency, but decreased primary fluorescence under well-watered and droughted conditions. Mycorrhizal maize plants had higher relative water content and water use efficiency under drought stress compared with non-mycorrhizal plants. The results indicated that AM symbiosis alleviates the toxic effect of drought stress via improving photosynthesis and water status of maize plants.
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Claims 7
Claim · model-written summary
Mycorrhizal maize has higher stomatal conductance than non-mycorrhizal plants under drought
- Treatment
- Mycorrhizale4
- Interactor
- arbuscular mycorrhizal (AM) funguse1symbiont
- Outcome
- stomatal conductancee4
- Direction
- highere4
- Comparator
- non-mycorrhizal plantse4
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.)”
e1“arbuscular mycorrhizal (AM) fungus”
e4“Mycorrhizal plants had higher stomatal conductance than non-mycorrhizal plants under drought stress”
Claim · model-written summary
Mycorrhizal maize has higher chlorophyll concentration than non-mycorrhizal plants under drought
- Treatment
- mycorrhizale5
- Interactor
- arbuscular mycorrhizal (AM) funguse1symbiont
- Outcome
- concentrations of chlorophylle5
- Direction
- highere5
- Comparator
- non-mycorrhizal plantse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.)”
e1“arbuscular mycorrhizal (AM) fungus”
e5“The concentrations of chlorophyll were higher in mycorrhizal than non-mycorrhizal plants under drought stress”
Claim · model-written summary
AM colonization significantly increases maximal fluorescence, maximum quantum efficiency of PSII photochemistry and potential photochemical efficiency under well-watered and drought conditions
- Treatment
- AM colonizatione6
- Outcome
- maximal fluorescence, maximum quantum efficiency of PSII photochemistry and potential photochemical efficiencye6
- Direction
- increasede6
- Qualifier
- under well-watered and droughted conditionse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.)”
e6“AM colonization significantly increased maximal fluorescence, maximum quantum efficiency of PSII photochemistry and potential photochemical efficiency, but decreased primary fluorescence under well-watered and droughted conditions”
Claim · model-written summary
AM colonization decreases primary fluorescence of maize under well-watered and drought conditions
- Treatment
- AM colonizatione6
- Outcome
- primary fluorescencee6
- Direction
- decreasede6
- Qualifier
- under well-watered and droughted conditionse6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.)”
e6“AM colonization significantly increased maximal fluorescence, maximum quantum efficiency of PSII photochemistry and potential photochemical efficiency, but decreased primary fluorescence under well-watered and droughted conditions”
Claim · model-written summary
Mycorrhizal maize has higher relative water content and water use efficiency than non-mycorrhizal plants under drought
- Treatment
- Mycorrhizale7
- Interactor
- arbuscular mycorrhizal (AM) funguse1symbiont
- Outcome
- relative water content and water use efficiencye7
- Direction
- highere7
- Comparator
- non-mycorrhizal plantse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“arbuscular mycorrhizal (AM) fungus”
e7“Mycorrhizal maize plants had higher relative water content and water use efficiency under drought stress compared with non-mycorrhizal plants”
Claim · model-written summary
Drought stress significantly decreases AM colonization and total dry weight of maize
- Treatment
- Drought stresse6
- Interactor
- arbuscular mycorrhizal (AM) funguse1symbiont
- Outcome
- AM colonization and total dry weighte6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.)”
e1“arbuscular mycorrhizal (AM) fungus”
e6“Drought stress significantly decreased AM colonization and total dry weight”
Claim · model-written summary
AM symbiosis is asserted to alleviate the toxic effect of drought stress by improving photosynthesis and water status of maize
- Treatment
- AM symbiosise7
- Outcome
- toxic effect of drought stresse7
- Qualifier
- via improving photosynthesis and water statuse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize (Zea mays L.)”
e7“AM symbiosis alleviates the toxic effect of drought stress via improving photosynthesis and water status of maize plants”
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