Abstract
Cold atmospheric pressure (CP) plasma irradiation of seeds has been shown to promote plant growth, but the molecular basis of this phenomenon is poorly understood. In our study, optimum irradiation of common sunflower seeds using a dielectric barrier discharge CP device stimulated growth of sunflower lateral organs and roots by 9-14 % compared to the control. Metagenomic analysis revealed that the structure of plant-associated bacterial assembly was greatly modified upon CP treatment and could be attributed to the antimicrobial effect of CP-generated reactive species. The treatment resulted in the domination of spore forming Mycobacterium sp. in the above-ground tissues of the seedlings. While the overall bacterial diversity in the roots was barely affected, the CP-induced shift in microbial composition is the likely basis for the observed seedling root growth stimulation and the long-term effect on lateral organ growth and could be mediated by increase in water uptake and/or direct root signaling. Low amplitude protein abundance differences were detected in the roots of the emerging seedlings that are characteristic to low intensity stress stimuli response and could be linked to the changes in plant-associated microbiome upon CP treatment.
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Claims 6
Claim · model-written summary
Cold plasma irradiation increased sunflower lateral organ and root growth by 9-14 % against control.
- Taxon
- common sunflower
Helianthus annuuse0 - Treatment
- optimum irradiatione0
- Outcome
- growth of sunflower lateral organs and rootse0
- Direction
- stimulatede0
- Value
- 9-14 %e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimum irradiation of common sunflower seeds using a dielectric barrier discharge CP device stimulated growth of sunflower lateral organs and roots by 9-14 % compared to the control”
Claim · model-written summary
Cold plasma treatment greatly modified the plant-associated bacterial assembly.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- CP treatmente0
- Outcome
- structure of plant-associated bacterial assemblye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the structure of plant-associated bacterial assembly was greatly modified upon CP treatment”
t0“Sunflower Seeds”
Claim · model-written summary
Mycobacterium sp. dominated the above-ground seedling tissues after treatment.
- Taxon
- SunflowerHelianthus annuust0
- Organ / stage
- above-ground tissues of the seedlingse0
- Treatment
- The treatmente0
- Interactor
- Mycobacterium sp.
Mycobacteriume0other - Outcome
- domination of spore forming Mycobacterium sp.e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatment resulted in the domination of spore forming Mycobacterium sp. in the above-ground tissues of the seedlings”
t0“Sunflower Seeds”
Claim · model-written summary
Overall root bacterial diversity was barely affected by plasma treatment.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- CPe1
- Outcome
- overall bacterial diversity in the rootse0
- Direction
- barely affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the overall bacterial diversity in the roots was barely affected”
e1“CP-induced shift in microbial composition”
t0“Sunflower Seeds”
Claim · model-written summary
The authors propose that the microbial shift likely underlies root and lateral organ growth stimulation.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- CP-induced shift in microbial compositione0
- Outcome
- seedling root growth stimulation and the long-term effect on lateral organ growthe0
- Qualifier
- increase in water uptake and/or direct root signalinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the CP-induced shift in microbial composition is the likely basis for the observed seedling root growth stimulation and the long-term effect on lateral organ growth and could be mediated by increase in water uptake and/or direct root signaling”
t0“Sunflower Seeds”
Claim · model-written summary
Emerging seedling roots showed low amplitude differences in protein abundance.
- Taxon
- SunflowerHelianthus annuust0
- Organ / stage
- roots of the emerging seedlingse0
- Outcome
- protein abundance differencese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low amplitude protein abundance differences were detected in the roots of the emerging seedlings”
t0“Sunflower Seeds”
The same questions in other papers
radiation · growth · Helianthus annuus (common sunflower)Positive and negative results
7 papers in the same direction as this paper · 11 in the opposite direction
- no effect
- no effect
- negative
15 papers more in this group
See all 19 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.