Abstract
Soil salinization is considered a major global environmental problem due to its adverse effects on agricultural sustainability and production. Compost is an environmentally friendly and sustainable measure used for reclaiming saline–sodic soil. However, the responses of the physiological characteristics of alfalfa and the structure and function of rhizosphere fungal communities after compost application in saline–sodic soil remain elusive. Here, a pot experiment was conducted to explore the effect of different compost application rates on soil properties, plant physiological traits, and rhizosphere fungal community characteristics. The results showed that compost significantly increased soil nutrients and corresponding soil enzyme activities, enhanced leaf photosynthesis traits, and ion homeostasis compared with the control treatment. We further found that the rhizosphere fungal communities were dominated by Sodiomyces at the genus level, and the relative abundance of pathogenic fungi, such as Botryotrichum, Plectosphaerella, Pseudogymnoascus, and Fusarium, declined after compost application. Moreover, the α-diversity indexes of the fungal community under compost application rates of 15% and 25% significantly decreased in comparison to the control treatment. The soil SOC, pH, TP, and TN were the main environmental factors affecting fungal community composition. The leaf photosynthetic traits and metal ion contents showed significantly positive correlations with Sodiomyces and Aspergillus. The fungal trophic mode was dominated by Pathotroph–Saprotroph–Symbiotroph and Saprotroph. Overall, our findings provide an important basis for the future application of microbial-based strategies to improve plant tolerance to saline-alkali stress.
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Claims 14
Claim · model-written summary
Compost significantly increased soil nutrients and corresponding soil enzyme activities relative to control.
- Treatment
- composte0
- Outcome
- soil nutrients and corresponding soil enzyme activitiese0
- Direction
- increasede0
- Comparator
- control treatmente1
Not reportedTaxon
Verbatim
e0“compost significantly increased soil nutrients and corresponding soil enzyme activities”
e1“compared with the control treatment”
Claim · model-written summary
Compost enhanced alfalfa leaf photosynthesis traits and ion homeostasis relative to control.
- Taxon
- Alfalfa
Medicago sativat0 - Treatment
- composte1
- Outcome
- leaf photosynthesis traits, and ion homeostasise0
- Direction
- enhancede0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“enhanced leaf photosynthesis traits, and ion homeostasis compared with the control treatment”
e1“compost significantly increased”
Claim · model-written summary
Sodiomyces dominated the rhizosphere fungal communities at genus level.
- Taxon
- SodiomycesSodiomycese0
- Outcome
- rhizosphere fungal communitiese0
- Direction
- dominatede0
Verbatim
e0“the rhizosphere fungal communities were dominated by Sodiomyces at the genus level”
Claim · model-written summary
Botryotrichum relative abundance declined after compost application.
- Taxon
- Botryotrichum
Botryotrichume0 - Treatment
- compost applicatione0
- Outcome
- relative abundance of pathogenic fungie0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the relative abundance of pathogenic fungi, such as Botryotrichum, Plectosphaerella, Pseudogymnoascus, and Fusarium, declined after compost application”
Claim · model-written summary
Plectosphaerella relative abundance declined after compost application.
- Taxon
- PlectosphaerellaPlectosphaerellae0
- Treatment
- compost applicatione0
- Outcome
- relative abundance of pathogenic fungie0
- Direction
- declinede0
Not reportedComparator
Verbatim
e0“the relative abundance of pathogenic fungi, such as Botryotrichum, Plectosphaerella, Pseudogymnoascus, and Fusarium, declined after compost application”
Claim · model-written summary
Pseudogymnoascus relative abundance declined after compost application.
- Taxon
- Pseudogymnoascus
Pseudogymnoascuse0 - Treatment
- compost applicatione0
- Outcome
- relative abundance of pathogenic fungie0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the relative abundance of pathogenic fungi, such as Botryotrichum, Plectosphaerella, Pseudogymnoascus, and Fusarium, declined after compost application”
Claim · model-written summary
Fusarium relative abundance declined after compost application.
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the relative abundance of pathogenic fungi, such as Botryotrichum, Plectosphaerella, Pseudogymnoascus, and Fusarium, declined after compost application”
Claim · model-written summary
Fungal alpha diversity significantly decreased at 15% compost compared with control.
Verbatim
e0“the α-diversity indexes of the fungal community under compost application rates of 15% and 25% significantly decreased in comparison to the control treatment”
Claim · model-written summary
Fungal alpha diversity significantly decreased at 25% compost compared with control.
Verbatim
e0“the α-diversity indexes of the fungal community under compost application rates of 15% and 25% significantly decreased in comparison to the control treatment”
Claim · model-written summary
Soil SOC, pH and TP were main factors affecting fungal composition.
Not reportedDirection
Verbatim
e0“The soil SOC, pH, TP, and TN were the main environmental factors affecting fungal community composition.”
Claim · model-written summary
Soil TN was a main factor affecting fungal composition.
Not reportedDirection
Verbatim
e0“The soil SOC, pH, TP, and TN were the main environmental factors affecting fungal community composition.”
Claim · model-written summary
Alfalfa leaf photosynthetic traits and metal ion contents correlated significantly positively with Sodiomyces.
- Taxon
- AlfalfaMedicago sativat0
- Interactor
- SodiomycesSodiomycese0other
- Outcome
- leaf photosynthetic traits and metal ion contentse0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“The leaf photosynthetic traits and metal ion contents showed significantly positive correlations with Sodiomyces and Aspergillus.”
Claim · model-written summary
Alfalfa leaf photosynthetic traits and metal ion contents correlated significantly positively with Aspergillus.
- Taxon
- AlfalfaMedicago sativat0
- Interactor
- Aspergillus
Aspergilluse0other - Outcome
- leaf photosynthetic traits and metal ion contentse0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Alfalfa”
e0“The leaf photosynthetic traits and metal ion contents showed significantly positive correlations with Sodiomyces and Aspergillus.”
Claim · model-written summary
Pathotroph–Saprotroph–Symbiotroph and Saprotroph dominated fungal trophic modes.
Not reportedDirection
Verbatim
e0“The fungal trophic mode was dominated by Pathotroph–Saprotroph–Symbiotroph and Saprotroph.”
The same questions in other papers
fertilization · soil: biology · Medicago sativa (alfalfa)Positive and negative results
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See all 8 papers →fertilization · physiology: photosynthesis · Medicago sativa (alfalfa)Results agree
3 papers in the same direction as this paper
- positive
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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.