Abstract
Introduction: Salt stress in seed germination and early seedling growth is the greatest cause of crop loss in saline-alkali soils. Microbial seed coating is an effective way to promote plant growth and salt resistance, but these coatings suffer from poor seed adhesion and low survival rates under typical storage conditions. Methods: from kelp was isolated and microencapsulated with calcium alginate using the emulsion and internal gelation method. Results: Compared to unencapsulated seeds, the spherical microcapsules demonstrated a bacterial encapsulation rate of 65.4% and survival rate increased by 22.4% at 25°C for 60 days. Under salt stress conditions, the seed germination percentage of microcapsule-embedded bacteria (M-Embed) was 90%, which was significantly increased by 17% compared to the germination percentage (73%) of no coating treatment (CK). Root growth was also significantly increased by coating with M-Embed. Chlorophyll, peroxidase, superoxide dismutase, catalase, proline, hydrogen peroxide and malondialdehyde levels indicated that the M-Embed had the best positive effects under salt stress conditions. Discussion: Therefore, embedding microorganisms in suitable capsule materials provides effective protection for the survival of the microorganism and this seed coating can alleviate salt stress in wheat. This process will benefit the development of sustainable agriculture in coastal regions with saline soils.
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Claims 5
Claim · model-written summary
Microcapsules achieved 65.4% bacterial encapsulation.
Verbatim
e0“the spherical microcapsules demonstrated a bacterial encapsulation rate of 65.4%”
Claim · model-written summary
Microcapsules increased bacterial survival by 22.4% after storage.
Verbatim
e0“survival rate increased by 22.4% at 25°C for 60 days”
Claim · model-written summary
M-Embed increased wheat germination under salt stress to 90% versus 73% for uncoated seeds.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- microcapsule-embedded bacteria (M-Embed)e0
- Outcome
- seed germination percentagee0
- Direction
- increasede0
- Value
- 90%e0
- Qualifier
- 17%e0
- Comparator
- no coating treatment (CK)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat seed germination”
e0“Under salt stress conditions, the seed germination percentage of microcapsule-embedded bacteria (M-Embed) was 90%, which was significantly increased by 17% compared to the germination percentage (73%) of no coating treatment (CK)”
Claim · model-written summary
M-Embed coating significantly increased wheat root growth.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- coating with M-Embede0
- Outcome
- Root growthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat seed germination”
e0“Root growth was also significantly increased by coating with M-Embed”
Claim · model-written summary
M-Embed had the best positive effect on wheat chlorophyll and antioxidant and stress markers under salt stress.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- M-Embede0
- Outcome
- best positive effectse0
- Direction
- best positivee0
- Qualifier
- under salt stress conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“wheat seed germination”
e0“Chlorophyll, peroxidase, superoxide dismutase, catalase, proline, hydrogen peroxide and malondialdehyde levels indicated that the M-Embed had the best positive effects under salt stress conditions”
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