Abstract
Alfalfa is a widely distributed forage legume whose leaves are high in protein content and whose stems are suitable for bioethanol production. However, alfalfa forage digestibility, quality and yield may vary under future climate change scenarios. This legume can establish double symbiosis with nitrogen-fixing bacteria and arbuscular mycorrhizal fungi (AMF). The presence of AMF can modify the evolution of biomass production and partitioning during the vegetative growth of alfalfa. We hypothesised that mycorrhizal symbiosis may change the quantity and/or quality of carbohydrates and lignin in leaves and/or stems of alfalfa, with these changes being dependent on the atmospheric CO2 concentration at which plants are grown. Results showed that mycorrhizal alfalfa plants exposed to elevated CO2 had improved leaf, stem and root biomass, enhanced amount of hemicellulose and decreased concentration of lignin in cell walls of leaves as well as increased levels of glucose and fructose in stems compared with non-mycorrhizal alfalfa. These results indicated improved forage quality (leaves) and enhanced potential for bioethanol conversion (stems) in mycorrhizal alfalfa cultivated under elevated CO2. Moreover, the potential of stems for producing CH4 reinforced their suitability for the conversion of biomass into bioethanol.
Abstract from the paper’s OpenAlex record; open copy licensed other-oa. 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
Under elevated CO2, mycorrhizal alfalfa had improved leaf, stem and root biomass relative to non-mycorrhizal plants.
- Taxon
- alfalfa
Medicago sativae0 - Treatment
- mycorrhizale0
- Interactor
- arbuscular mycorrhizal fungit0symbiont
- Outcome
- leaf, stem and root biomasse0
- Direction
- improvede0
- Qualifier
- elevated CO2e0
- Comparator
- non-mycorrhizal alfalfae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal alfalfa plants exposed to elevated CO2 had improved leaf, stem and root biomass, enhanced amount of hemicellulose and decreased concentration of lignin in cell walls of leaves as well as increased levels of glucose and fructose in stems compared with non-mycorrhizal alfalfa.”
t0“arbuscular mycorrhizal fungi”
Claim · model-written summary
Under elevated CO2, mycorrhizal alfalfa had more hemicellulose than non-mycorrhizal alfalfa.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- mycorrhizale0
- Interactor
- arbuscular mycorrhizal fungit0symbiont
- Outcome
- amount of hemicellulosee0
- Direction
- enhancede0
- Qualifier
- elevated CO2e0
- Comparator
- non-mycorrhizal alfalfae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal alfalfa plants exposed to elevated CO2 had improved leaf, stem and root biomass, enhanced amount of hemicellulose and decreased concentration of lignin in cell walls of leaves as well as increased levels of glucose and fructose in stems compared with non-mycorrhizal alfalfa.”
t0“arbuscular mycorrhizal fungi”
Claim · model-written summary
Under elevated CO2, mycorrhizal alfalfa had less leaf cell wall lignin than non-mycorrhizal alfalfa.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- mycorrhizale0
- Interactor
- arbuscular mycorrhizal fungit0symbiont
- Outcome
- concentration of lignin in cell walls of leavese0
- Direction
- decreasede0
- Qualifier
- elevated CO2e0
- Comparator
- non-mycorrhizal alfalfae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal alfalfa plants exposed to elevated CO2 had improved leaf, stem and root biomass, enhanced amount of hemicellulose and decreased concentration of lignin in cell walls of leaves as well as increased levels of glucose and fructose in stems compared with non-mycorrhizal alfalfa.”
t0“arbuscular mycorrhizal fungi”
Claim · model-written summary
Under elevated CO2, mycorrhizal alfalfa had more stem glucose and fructose than non-mycorrhizal alfalfa.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- mycorrhizale0
- Interactor
- arbuscular mycorrhizal fungit0symbiont
- Outcome
- levels of glucose and fructose in stemse0
- Direction
- increasede0
- Qualifier
- elevated CO2e0
- Comparator
- non-mycorrhizal alfalfae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mycorrhizal alfalfa plants exposed to elevated CO2 had improved leaf, stem and root biomass, enhanced amount of hemicellulose and decreased concentration of lignin in cell walls of leaves as well as increased levels of glucose and fructose in stems compared with non-mycorrhizal alfalfa.”
t0“arbuscular mycorrhizal fungi”
Claim · model-written summary
The authors interpreted mycorrhizal alfalfa under elevated CO2 as having improved forage quality.
- Taxon
- alfalfaMedicago sativae0
- Interactor
- arbuscular mycorrhizal fungit0symbiont
- Outcome
- forage quality (leaves)e0
- Direction
- improvede0
- Qualifier
- elevated CO2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results indicated improved forage quality (leaves) and enhanced potential for bioethanol conversion (stems) in mycorrhizal alfalfa cultivated under elevated CO2.”
t0“arbuscular mycorrhizal fungi”
Claim · model-written summary
The authors interpreted mycorrhizal alfalfa stems under elevated CO2 as having greater bioethanol conversion potential.
- Taxon
- alfalfaMedicago sativae0
- Interactor
- arbuscular mycorrhizal fungit0symbiont
- Outcome
- potential for bioethanol conversion (stems)e0
- Direction
- enhancede0
- Qualifier
- elevated CO2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results indicated improved forage quality (leaves) and enhanced potential for bioethanol conversion (stems) in mycorrhizal alfalfa cultivated under elevated CO2.”
t0“arbuscular mycorrhizal fungi”
Claim · model-written summary
Stem potential to produce CH4 supported suitability for biomass conversion into bioethanol.
- Taxon
- alfalfaMedicago sativat0
- Organ / stage
- stemse0
- Outcome
- potential of stems for producing CH4e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the potential of stems for producing CH4 reinforced their suitability for the conversion of biomass into bioethanol.”
t0“alfalfa”
The same questions in other papers
mycorrhiza · molecular: metabolites · Medicago sativa (alfalfa)Positive and negative results
12 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
10 papers more in this group
See all 14 papers →mycorrhiza · growth · Medicago sativa (alfalfa)Positive and negative results
34 papers in the same direction as this paper · 2 in the opposite direction
- negative
- no effect
- positive
33 papers more in this group
See all 37 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.