Abstract
Achieving food security in a context of environmental sustainability is one of the main challenges of the XXI century. Two competing strategies to achieve this goal are the use of genetically modified plants and the use of plant growth promoting microorganisms (PGPMs). However, few studies assess the response of genetically modified plants to PGPMs. The aim of this study was to compare the response of rice plants over-expressing the vacuolar H+-PPase (AVP) to the endophytic fungus Piriformospora indica with the response of unmodified plants (WT). Oryza sativa plants (WT and AVP) were inoculated with P. indica and 30 days later, morphological, ecophysiological and bioenergetic parameters, and nutrient content were assessed. AVP and WT plant heights were strongly influenced by inoculation with P. indica, which also promoted increases in fresh and dry matter of shoot in both genotypes. This may be related with the stimulatory effect of P. indica on ecophysiological parameters, especially photosynthetic rate, stomatal conductance, intrinsic water use efficiency and carboxylation efficiency. However, there were differences between the genotypes concerning the physiological mechanisms leading to biomass increment. In WT plants, inoculation with P. indica stimulated all H+ pumps. However, in inoculated AVP plants, H+-PPase was stimulated, but P- and V-ATPases were inhibited. Fungal inoculation enhanced nutrient uptake in both shoots and roots of WT and AVP plants; but in inoculated genotypes, the nutrient uptake was lower in AVP than in WT plants. These results clearly demonstrate that the symbiosis between P. indica and AVP plants did not benefit those plants, which may be related to the inefficient colonization of this fungus on the transgenic plants, demonstrating an incompatibility of this symbiosis, which needs to be further studied.
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Claims 13
Claim · model-written summary
P. indica inoculation influenced WT rice plant height.
- Taxon
- Oryza sativa
Oryza sativae0 - Material
- WTe1
- Treatment
- inoculation with P. indicae1
- Interactor
- P. indicaSerendipita indicae1symbiont
- Outcome
- plant heightse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“AVP and WT plant heights were strongly influenced by inoculation with P. indica”
Claim · model-written summary
P. indica inoculation influenced AVP rice plant height.
- Taxon
- Oryza sativaOryza sativae0
- Material
- AVPe1
- Treatment
- inoculation with P. indicae1
- Interactor
- P. indicaSerendipita indicae1symbiont
- Outcome
- plant heightse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“AVP and WT plant heights were strongly influenced by inoculation with P. indica”
Claim · model-written summary
P. indica increased shoot fresh and dry matter in WT rice.
- Taxon
- Oryza sativaOryza sativae0
- Material
- WTe0
- Organ / stage
- shoote1
- Treatment
- inoculation with P. indicae1
- Interactor
- P. indicaSerendipita indicae0symbiont
- Outcome
- fresh and dry matter of shoote1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“inoculation with P. indica, which also promoted increases in fresh and dry matter of shoot in both genotypes”
Claim · model-written summary
P. indica increased shoot fresh and dry matter in AVP rice.
- Taxon
- Oryza sativaOryza sativae0
- Material
- AVPe0
- Organ / stage
- shoote1
- Treatment
- inoculation with P. indicae1
- Interactor
- P. indicaSerendipita indicae0symbiont
- Outcome
- fresh and dry matter of shoote1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“inoculation with P. indica, which also promoted increases in fresh and dry matter of shoot in both genotypes”
Claim · model-written summary
P. indica stimulated photosynthetic rate and stomatal conductance.
- Taxon
- Oryza sativaOryza sativae0
- Treatment
- P. indicae1
- Interactor
- P. indicaSerendipita indicae1symbiont
- Outcome
- photosynthetic rate, stomatal conductancee1
- Direction
- stimulatorye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“stimulatory effect of P. indica on ecophysiological parameters, especially photosynthetic rate, stomatal conductance, intrinsic water use efficiency and carboxylation efficiency”
Claim · model-written summary
P. indica stimulated intrinsic water use and carboxylation efficiency.
- Taxon
- Oryza sativaOryza sativae0
- Treatment
- P. indicae1
- Interactor
- P. indicaSerendipita indicae1symbiont
- Outcome
- intrinsic water use efficiency and carboxylation efficiencye1
- Direction
- stimulatorye1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“stimulatory effect of P. indica on ecophysiological parameters, especially photosynthetic rate, stomatal conductance, intrinsic water use efficiency and carboxylation efficiency”
Claim · model-written summary
P. indica inoculation stimulated all H+ pumps in WT rice.
- Taxon
- Oryza sativaOryza sativae0
- Material
- WTe1
- Treatment
- inoculation with P. indicae1
- Interactor
- P. indicaSerendipita indicae1symbiont
- Outcome
- all H+ pumpse1
- Direction
- stimulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“In WT plants, inoculation with P. indica stimulated all H+ pumps”
Claim · model-written summary
P. indica inoculation stimulated H+-PPase in AVP rice.
- Taxon
- Oryza sativaOryza sativae0
- Material
- AVPe1
- Treatment
- inoculatede1
- Interactor
- P. indicaSerendipita indicae0symbiont
- Gene
- H+-PPasee1
- Outcome
- H+-PPasee1
- Direction
- stimulatede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“in inoculated AVP plants, H+-PPase was stimulated”
Claim · model-written summary
P. indica inoculation inhibited P- and V-ATPases in AVP rice.
- Taxon
- Oryza sativaOryza sativae0
- Material
- AVPe1
- Treatment
- inoculatede1
- Interactor
- P. indicaSerendipita indicae0symbiont
- Gene
- P- and V-ATPasese1
- Outcome
- P- and V-ATPasese1
- Direction
- inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“in inoculated AVP plants, H+-PPase was stimulated, but P- and V-ATPases were inhibited”
Claim · model-written summary
Fungal inoculation enhanced nutrient uptake in WT shoots and roots.
- Taxon
- Oryza sativaOryza sativae0
- Material
- WTe1
- Organ / stage
- shoots and rootse1
- Treatment
- Fungal inoculatione1
- Interactor
- P. indicaSerendipita indicae0symbiont
- Outcome
- nutrient uptakee1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“Fungal inoculation enhanced nutrient uptake in both shoots and roots of WT and AVP plants”
Claim · model-written summary
Fungal inoculation enhanced nutrient uptake in AVP shoots and roots.
- Taxon
- Oryza sativaOryza sativae0
- Material
- AVPe1
- Organ / stage
- shoots and rootse1
- Treatment
- Fungal inoculatione1
- Interactor
- P. indicaSerendipita indicae0symbiont
- Outcome
- nutrient uptakee1
- Direction
- enhancede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“Fungal inoculation enhanced nutrient uptake in both shoots and roots of WT and AVP plants”
Claim · model-written summary
Among inoculated rice plants, AVP had lower nutrient uptake than WT.
- Taxon
- Oryza sativaOryza sativae0
- Material
- AVPe1
- Interactor
- P. indicaSerendipita indicae0symbiont
- Outcome
- nutrient uptakee1
- Direction
- lowere1
- Comparator
- WTe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“in inoculated genotypes, the nutrient uptake was lower in AVP than in WT plants”
Claim · model-written summary
P. indica colonization of transgenic rice was inefficient.
- Taxon
- Oryza sativaOryza sativae0
- Material
- AVPe0
- Interactor
- P. indicaSerendipita indicae0symbiont
- Outcome
- inefficient colonization of this fungus on the transgenic plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oryza sativa plants (WT and AVP) were inoculated with P. indica”
e1“inefficient colonization of this fungus on the transgenic plants”
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See all 5 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.