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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.5
- 수록면
- 442 - 449 (8page)
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초록· 키워드
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Background: Panax ginseng is an important crop in Asian countries given its pharmaceutical uses. It is usually harvested after 4-6 years of cultivation. However, various abiotic stresses have led to its quality reduction. One of the stress causes is high content of heavy metal in ginseng cultivation area. Plant growth-promoting rhizobacteria (PGPR) can play a role in healthy growth of plants. It has been considered as a new trend for supporting the growth of many crops in heavy metal occupied areas, such as Aluminum (Al).
Methods: In vitro screening of the plant growth promoting activities of five tested strains were detected. Surface-disinfected 2-year-old ginseng seedlings were dipping in Rhizobium panacihumi DCY116<SUP>T</SUP> suspensions for 15 min and cultured in pots for investigating Al resistance of P. ginseng. The harvesting was carried out 10 days after Al treatment. We then examined H₂O₂, proline, total soluble sugar, and total phenolic contents. We also checked the expressions of related genes (PgCAT, PgAPX, and PgP5CS) of reactive oxygen species scavenging response and pyrroline-5-carboxylate synthetase by reverse transcription polymerase chain reaction (RT-PCR) method.
Results: Among five tested strains isolated from ginseng-cultivated soil, R. panacihumi DCY116<SUP>T</SUP> was chosen as the potential PGPR candidate for further study. Ginseng seedlings treated with R. panacihumi DCY116<SUP>T</SUP> produced higher biomass, proline, total phenolic, total soluble sugar contents, and related gene expressions but decreased H₂O₂ level than nonbacterized Al-stressed seedlings.
Conclusion: R. panacihumi DCY116<SUP>T</SUP> can be used as potential PGPR and “plant strengthener” for future cultivation of ginseng or other crops/plants that are grown in regions with heavy metal exposure.
Methods: In vitro screening of the plant growth promoting activities of five tested strains were detected. Surface-disinfected 2-year-old ginseng seedlings were dipping in Rhizobium panacihumi DCY116<SUP>T</SUP> suspensions for 15 min and cultured in pots for investigating Al resistance of P. ginseng. The harvesting was carried out 10 days after Al treatment. We then examined H₂O₂, proline, total soluble sugar, and total phenolic contents. We also checked the expressions of related genes (PgCAT, PgAPX, and PgP5CS) of reactive oxygen species scavenging response and pyrroline-5-carboxylate synthetase by reverse transcription polymerase chain reaction (RT-PCR) method.
Results: Among five tested strains isolated from ginseng-cultivated soil, R. panacihumi DCY116<SUP>T</SUP> was chosen as the potential PGPR candidate for further study. Ginseng seedlings treated with R. panacihumi DCY116<SUP>T</SUP> produced higher biomass, proline, total phenolic, total soluble sugar contents, and related gene expressions but decreased H₂O₂ level than nonbacterized Al-stressed seedlings.
Conclusion: R. panacihumi DCY116<SUP>T</SUP> can be used as potential PGPR and “plant strengthener” for future cultivation of ginseng or other crops/plants that are grown in regions with heavy metal exposure.
목차
ABSTRACT
1. Introduction
2. Materials and methods
3. Results and discussion
4. Conclusion
References
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