Abstract
Abstract Climatic change is pointed as one of the major challenges for global food security. Based on current models of climate change, reduction in precipitations and in turn, increase in the soil salinity will be a sharp constraint for crops productivity worldwide. In this context, root fungi appear as a new strategy to improve plant ecophysiological performance and crop yield under abiotic stress. In this study, we evaluated the impact of the two fungal endophytes Penicillium brevicompactum and P. chrysogenum isolated from Antarctic plants on nutrients and Na + contents, net photosynthesis, water use efficiency, yield and survival in tomato and lettuce, facing salinity stress conditions. Inoculation of plant roots with fungal endophytes resulted in greater fresh and dry biomass production, and an enhanced survival rate under salt conditions. Inoculation of plants with the fungal endophytes was related with a higher up/down-regulation of ion homeostasis by enhanced expression of the NHX1 gene. The two endophytes diminished the effects of salt stress in tomato and lettuce, provoked a higher efficiency in photosynthetic energy production and an improved sequestration of Na + in vacuoles is suggested by the upregulating of the expression of vacuolar NHX1 Na + /H + antiporters. Promoting plant-beneficial interactions with root symbionts appears to be an environmentally friendly strategy to mitigate the impact of climate change variables on crop production.
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Claims 5
Claim · model-written summary
Root endophyte inoculation increased fresh and dry biomass under salt conditions.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- Inoculation of plant roots with fungal endophytese0
- Outcome
- fresh and dry biomass productione0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of plant roots with fungal endophytes resulted in greater fresh and dry biomass production, and an enhanced survival rate under salt conditions”
t0“yield and survival in tomato and lettuce”
Claim · model-written summary
Root endophyte inoculation enhanced survival under salt conditions.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- Inoculation of plant roots with fungal endophytese0
- Outcome
- survival ratee0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of plant roots with fungal endophytes resulted in greater fresh and dry biomass production, and an enhanced survival rate under salt conditions”
t0“yield and survival in tomato and lettuce”
Claim · model-written summary
Endophyte inoculation was associated with increased NHX1 expression.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- Inoculation of plants with the fungal endophytese0
- Gene
- NHX1e0
- Outcome
- expression of the NHX1 genee0
- Direction
- enhancede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inoculation of plants with the fungal endophytes was related with a higher up/down-regulation of ion homeostasis by enhanced expression of the NHX1 gene”
t0“yield and survival in tomato and lettuce”
Claim · model-written summary
The two endophytes improved photosynthetic energy efficiency in tomato and lettuce under salt stress.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- The two endophytese0
- Outcome
- efficiency in photosynthetic energy productione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The two endophytes diminished the effects of salt stress in tomato and lettuce, provoked a higher efficiency in photosynthetic energy production”
Claim · model-written summary
NHX1 upregulation suggests greater vacuolar Na+ sequestration with the endophytes.
- Taxon
- tomatoSolanum lycopersicumt0
- Gene
- NHX1 Na + /H + antiporterse0
- Outcome
- sequestration of Na + in vacuolese0
- Direction
- improvede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an improved sequestration of Na + in vacuoles is suggested by the upregulating of the expression of vacuolar NHX1 Na + /H + antiporters”
t0“yield and survival in tomato and lettuce”
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