Abstract
• Here we tested the hypothesis that the activity of sucrose-cleaving enzymes is modified in roots colonized by arbuscular fungi. • The activities of soluble and cell-wall bound invertases and of sucrose synthase were assessed in nonnodulated roots of soybean (Glycine max), either inoculated with the arbuscular mycorrhizal fungus Glomus mosseae, or in the absence of inoculation. Furthermore, we assessed the activity of sucrose-cleaving enzymes in cultured extraradical mycelium of the arbuscular fungus Glomus intraradices. • Both soluble and cell wall-bound acid invertase activities decreased during the course of the experiment; there were no differences between mycorrhizal and nonmycorrhizal plants. Alkaline invertase activity was significantly higher in inoculated roots from the beginning of root colonization. Sucrose synthase activity showed no significant differences between treatments for 35 d, thereafter it became significantly higher in mycorrhizal roots. No sucrose cleaving activities were detected in extraradical mycelium. • Fungal colonization of soybean roots induces an increase in alkaline invertase activity, which could provide hexoses for the fungal symbiont and for development of colonized cells.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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
Soluble acid invertase activity decreased over the experiment in soybean roots, with no difference between mycorrhizal and nonmycorrhizal plants.
- Taxon
- soybean (Glycine max)
Glycine maxe1 - Organ / stage
- rootse1
- Interactor
- Glomus mosseae
Funneliformis mosseaee1symbiont - Gene
- solublee0
- Outcome
- soluble and cell wall-bound acid invertase activitiese0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both soluble and cell wall-bound acid invertase activities decreased during the course of the experiment; there were no differences between mycorrhizal and nonmycorrhizal plants.”
e1“nonnodulated roots of soybean (Glycine max), either inoculated with the arbuscular mycorrhizal fungus Glomus mosseae, or in the absence of inoculation”
Claim · model-written summary
Cell wall-bound acid invertase activity decreased over the experiment in soybean roots, with no difference between mycorrhizal and nonmycorrhizal plants.
- Taxon
- soybean (Glycine max)Glycine maxe1
- Organ / stage
- rootse1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- cell wall-bound acid invertase activitiese0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both soluble and cell wall-bound acid invertase activities decreased during the course of the experiment; there were no differences between mycorrhizal and nonmycorrhizal plants.”
e1“nonnodulated roots of soybean (Glycine max), either inoculated with the arbuscular mycorrhizal fungus Glomus mosseae, or in the absence of inoculation”
Claim · model-written summary
Alkaline invertase activity was significantly higher in inoculated soybean roots from the start of colonization.
- Taxon
- soybean (Glycine max)Glycine maxe1
- Organ / stage
- rootse0
- Treatment
- inoculated with the arbuscular mycorrhizal fungus Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- Alkaline invertase activitye0
- Direction
- highere0
- Qualifier
- from the beginning of root colonizatione0
- Comparator
- absence of inoculatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alkaline invertase activity was significantly higher in inoculated roots from the beginning of root colonization.”
e1“nonnodulated roots of soybean (Glycine max), either inoculated with the arbuscular mycorrhizal fungus Glomus mosseae, or in the absence of inoculation”
Claim · model-written summary
Soybean root sucrose synthase activity did not differ significantly between inoculated and uninoculated treatments for 35 days.
- Taxon
- soybean (Glycine max)Glycine maxe1
- Organ / stage
- rootse1
- Treatment
- inoculated with the arbuscular mycorrhizal fungus Glomus mosseaee1
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Outcome
- Sucrose synthase activitye0
- Direction
- no significant differencese0
- Qualifier
- for 35 de0
- Comparator
- absence of inoculatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sucrose synthase activity showed no significant differences between treatments for 35 d”
e1“nonnodulated roots of soybean (Glycine max), either inoculated with the arbuscular mycorrhizal fungus Glomus mosseae, or in the absence of inoculation”
Claim · model-written summary
After 35 days, sucrose synthase activity became significantly higher in mycorrhizal soybean roots.
- Taxon
- soybean (Glycine max)Glycine maxe2
- Organ / stage
- rootse0
- Treatment
- inoculated with the arbuscular mycorrhizal fungus Glomus mosseaee2
- Interactor
- Glomus mosseaeFunneliformis mosseaee2symbiont
- Outcome
- Sucrose synthase activitye1
- Direction
- highere0
- Qualifier
- thereaftere0
- Comparator
- absence of inoculatione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thereafter it became significantly higher in mycorrhizal roots”
e1“Sucrose synthase activity showed no significant differences between treatments for 35 d”
e2“nonnodulated roots of soybean (Glycine max), either inoculated with the arbuscular mycorrhizal fungus Glomus mosseae, or in the absence of inoculation”
Claim · model-written summary
No sucrose-cleaving enzyme activities were detected in the extraradical mycelium of Glomus intraradices.
- Taxon
- soybean (Glycine max)Glycine maxe2
- Organ / stage
- extraradical myceliume0
- Interactor
- Glomus intraradicesRhizophagus intraradicese1symbiont
- Outcome
- sucrose cleaving activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No sucrose cleaving activities were detected in extraradical mycelium.”
e1“the arbuscular fungus Glomus intraradices”
e2“roots of soybean (Glycine max)”
Claim · model-written summary
The authors suggest that increased alkaline invertase activity in colonized soybean roots could provide hexoses for the fungal symbiont and development of colonized cells.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- rootse0
- Interactor
- Glomus mosseaeFunneliformis mosseaee1symbiont
- Gene
- alkaline invertasee0
- Outcome
- provide hexoses for the fungal symbiont and for development of colonized cellse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fungal colonization of soybean roots induces an increase in alkaline invertase activity, which could provide hexoses for the fungal symbiont and for development of colonized cells.”
e1“the arbuscular mycorrhizal fungus Glomus mosseae”
The same questions in other papers
Funneliformis mosseae · physiology: enzyme activity · Glycine max (soybean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
inoculation · physiology: enzyme activity · Glycine max (soybean)Positive and negative results
28 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
27 papers more in this group
See all 31 papers →inoculation · soil: biology · Glycine max (soybean)Positive and negative results
27 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- no effect
- negative
29 papers more in this group
See all 33 papers →mycorrhiza · physiology: enzyme activity · Glycine max (soybean)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →mycorrhiza · soil: biology · Glycine max (soybean)Results agree
6 papers in the same direction as this paper
- positive
- positive
- positive
3 papers more in this group
See all 7 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.