Abstract
The symbiosis of arbuscular mycorrhizae (AM) with plant roots can enhance plant responses, especially to drought stress. An experiment was conducted in a growth chamber to examine the impacts of arbuscular mycorrhizae on improving the drought tolerance of common bean (Phaseolus vulgaris L.) subject to different drought level conditions (25%, 50% and 75% field capacity) and control (field capacity). The seeds were inoculated with Glomus mosseae and 10-day-old seedlings were subjected to the drought treatments. After nine weeks, the plants were harvested. The results indicated that root and shoot dry weight increased, whereas the root:shoot ratio decreased, in drought-treated AM plants. Furthermore, maximum root colonisation was observed at 75% field capacity. In the drought-treated AM plants, the phosphorus content of the root and shoot significantly increased, whereas the potassium content of the root declined compared with that of non-AM plants. Mycorrhizal plants showed higher CO2 assimilation, water relative content, transpiration rate, superoxide dismutase, polyphenol oxidase and peroxidase activities, proline content, and leaf soluble proteins, as well as lower stomatal resistance, compared with the non-AM plants, especially in drought-stress conditions. In conclusion, common bean can benefit from the AM symbiosis.
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Claims 9
Claim · model-written summary
Root and shoot dry weight increased in drought-treated AM common bean plants.
- Taxon
- common bean
Phaseolus vulgarist0 - Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseae
Funneliformis mosseaee1symbiont - Outcome
- root and shoot dry weighte0
- Direction
- increasede0
- Qualifier
- drought-treated AM plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“root and shoot dry weight increased, whereas the root:shoot ratio decreased, in drought-treated AM plants”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
The root:shoot ratio decreased in drought-treated AM common bean plants.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- root:shoot ratioe0
- Direction
- decreasede0
- Qualifier
- drought-treated AM plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“root and shoot dry weight increased, whereas the root:shoot ratio decreased, in drought-treated AM plants”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
Maximum root colonisation by AM was observed at 75% field capacity.
- Taxon
- common beanPhaseolus vulgarist0
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- maximum root colonisatione0
- Qualifier
- 75% field capacitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“maximum root colonisation was observed at 75% field capacity”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
Phosphorus content of root and shoot significantly increased in drought-treated AM plants compared with non-AM plants.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- phosphorus content of the root and shoote0
- Direction
- significantly increasede0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“phosphorus content of the root and shoot significantly increased, whereas the potassium content of the root declined compared with that of non-AM plants”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
Root potassium content declined in drought-treated AM plants compared with non-AM plants.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- potassium content of the roote0
- Direction
- declinede0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“phosphorus content of the root and shoot significantly increased, whereas the potassium content of the root declined compared with that of non-AM plants”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
Mycorrhizal plants showed higher CO2 assimilation, relative water content and transpiration rate than non-AM plants.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- CO2 assimilation, water relative content, transpiration ratee0
- Direction
- highere0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“higher CO2 assimilation, water relative content, transpiration rate, superoxide dismutase, polyphenol oxidase and peroxidase activities, proline content, and leaf soluble proteins, as well as lower stomatal resistance, compared with the non-AM plants”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
Mycorrhizal plants showed higher superoxide dismutase, polyphenol oxidase and peroxidase activities than non-AM plants.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- superoxide dismutase, polyphenol oxidase and peroxidase activitiese0
- Direction
- highere0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“higher CO2 assimilation, water relative content, transpiration rate, superoxide dismutase, polyphenol oxidase and peroxidase activities, proline content, and leaf soluble proteins, as well as lower stomatal resistance, compared with the non-AM plants”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
Mycorrhizal plants had higher proline content and leaf soluble proteins than non-AM plants.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- proline content, and leaf soluble proteinse0
- Direction
- highere0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“higher CO2 assimilation, water relative content, transpiration rate, superoxide dismutase, polyphenol oxidase and peroxidase activities, proline content, and leaf soluble proteins, as well as lower stomatal resistance, compared with the non-AM plants”
e1“inoculated with Glomus mosseae”
Claim · model-written summary
Mycorrhizal plants had lower stomatal resistance than non-AM plants.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- inoculated with Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- stomatal resistancee0
- Direction
- lowere0
- Comparator
- non-AM plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“common bean (Phaseolus vulgaris)”
e0“higher CO2 assimilation, water relative content, transpiration rate, superoxide dismutase, polyphenol oxidase and peroxidase activities, proline content, and leaf soluble proteins, as well as lower stomatal resistance, compared with the non-AM plants”
e1“inoculated with Glomus mosseae”
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