Abstract
Water deficit is one of the most important environmental stresses that adversely affect crop growth and production and mycorrhizal fungi and symbiotic bacteria have important role in resistance to drought stress. The effect of biofertilizers on alfalfa stress tolerance was studied at the greenhouse condition. Treatments comprised three water-deficit stresses (35%, 55% and 75% of field capacity) and four seeds inoculations (Glomus mosseae, Sinorhizobium meliloti, G. mosseae + S. meliloti and non-inoculated). Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%), while increased the proline and soluble sugars content (68.55 and 46.53% respectively) and osmotic potential (45.84%). The inoculation of seeds increased the capability of the plants in counteracting the stress, so that the production of compatible solutes was increased and the photosynthetic indices, proline, osmotic potential, membrane stability and forage yield were improved by seed inoculation. Mycorrhiza improved photosynthetic indexes and proline, but bacteria had more efficacy on membrane stability and forage yield. However, double inoculation due to the synergistic effect of mycorrhiza and Sinorhizobium, had the greatest effect than Solitary inoculation. Our results suggest that biofertilized alfalfa plants were better adapted than non- biofertilized ones to cope with water deficit.
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Claims 15
Claim · model-written summary
Water deficit decreased alfalfa cell membrane stability by 39%.
- Taxon
- Alfalfa
Medicago sativat0 - Treatment
- Water-deficit stresse0
- Outcome
- cell membrane stabilitye0
- Direction
- decreasee0
- Value
- 39%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%)”
t0“Alfalfa”
Claim · model-written summary
Water deficit decreased alfalfa total chlorophyll by 24.05%.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Water-deficit stresse0
- Outcome
- total Chle0
- Direction
- decreasee0
- Value
- 24.05%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%)”
t0“Alfalfa”
Claim · model-written summary
Water deficit decreased alfalfa carotenoids by 35.55%.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Water-deficit stresse0
- Outcome
- carotenoide0
- Direction
- decreasee0
- Value
- 35.55%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%)”
t0“Alfalfa”
Claim · model-written summary
Water deficit decreased alfalfa quantum yield by 50.64%.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Water-deficit stresse0
- Outcome
- quantum yielde0
- Direction
- decreasee0
- Value
- 50.64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%)”
t0“Alfalfa”
Claim · model-written summary
Water deficit decreased alfalfa forage yield by 28.20%.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Water-deficit stresse0
- Outcome
- forage yielde0
- Direction
- decreasee0
- Value
- 28.20%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%)”
t0“Alfalfa”
Claim · model-written summary
Water deficit increased alfalfa proline content by 68.55%.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Water-deficit stresse0
- Outcome
- prolinee0
- Direction
- increasede0
- Value
- 68.55e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%), while increased the proline and soluble sugars content (68.55 and 46.53% respectively)”
t0“Alfalfa”
Claim · model-written summary
Water deficit increased alfalfa soluble sugars content by 46.53%.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Water-deficit stresse0
- Outcome
- soluble sugars contente0
- Direction
- increasede0
- Value
- 46.53%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%), while increased the proline and soluble sugars content (68.55 and 46.53% respectively)”
t0“Alfalfa”
Claim · model-written summary
Water deficit increased alfalfa osmotic potential by 45.84%.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Water-deficit stresse0
- Outcome
- osmotic potentiale0
- Direction
- increaseinferrede0
- Value
- 45.84%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water-deficit stress decrease cell membrane stability (39%), total Chl (24.05%), carotenoid (35.55%), quantum yield (50.64%) and forage yield (28.20%), while increased the proline and soluble sugars content (68.55 and 46.53% respectively) and osmotic potential (45.84%).”
t0“Alfalfa”
Claim · model-written summary
Seed inoculation increased compatible-solute production in alfalfa under water deficit.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- inoculation of seedse0
- Outcome
- production of compatible solutese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inoculation of seeds increased the capability of the plants in counteracting the stress, so that the production of compatible solutes was increased”
t0“Alfalfa”
Claim · model-written summary
Seed inoculation improved photosynthetic indices, proline and osmotic potential in alfalfa.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- seed inoculatione0
- Outcome
- photosynthetic indices, proline, osmotic potentiale0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the photosynthetic indices, proline, osmotic potential, membrane stability and forage yield were improved by seed inoculation.”
t0“Alfalfa”
Claim · model-written summary
Seed inoculation improved membrane stability and forage yield in alfalfa.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- seed inoculatione0
- Outcome
- membrane stability and forage yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“membrane stability and forage yield were improved by seed inoculation.”
t0“Alfalfa”
Claim · model-written summary
Mycorrhiza improved photosynthetic indexes and proline in alfalfa.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- Mycorrhizae0
- Interactor
- Mycorrhizae0symbiont
- Outcome
- photosynthetic indexes and prolinee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mycorrhiza improved photosynthetic indexes and proline”
t0“Alfalfa”
Claim · model-written summary
Bacteria were more effective for membrane stability and forage yield than mycorrhiza in alfalfa.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- bacteriae0
- Outcome
- membrane stability and forage yielde0
- Direction
- more efficacye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bacteria had more efficacy on membrane stability and forage yield.”
t0“Alfalfa”
Claim · model-written summary
Double inoculation had a greater effect than solitary inoculation in alfalfa.
- Taxon
- AlfalfaMedicago sativat0
- Treatment
- double inoculatione0
- Interactor
- mycorrhizae0symbiont
- Second interactor
- Sinorhizobium
.JPG?width=60)
Sinorhizobiume0symbiont - Outcome
- greatest effecte0
- Direction
- greateste0
- Comparator
- Solitary inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e0“double inoculation due to the synergistic effect of mycorrhiza and Sinorhizobium, had the greatest effect than Solitary inoculation.”
t0“Alfalfa”
Claim · model-written summary
Biofertilized alfalfa plants were better adapted than non-biofertilized plants to water deficit.
- Taxon
- alfalfaMedicago sativae0
- Outcome
- better adaptede0
- Direction
- bettere0
- Qualifier
- water deficite0
- Comparator
- non- biofertilized onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biofertilized alfalfa plants were better adapted than non- biofertilized ones to cope with water deficit.”
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8 of 9 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.