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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제31권 제9호
- 발행연도
- 2021.9
- 수록면
- 1,218 - 1,230 (13page)
- DOI
- 10.4014/jmb.2105.05012
이용수
초록· 키워드
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Cold-adapted plant growth-promoting bacteria (PGPB) with multiple functions are an important resource for microbial fertilizers with low-temperature application. In this study, culturable coldadapted PGPB strains with nitrogen fixation and phosphorus solubilization abilities were isolated.
They were screened from root and rhizosphere of four dominant grass species in nondegraded alpine grasslands of the Qilian Mountains, China. Their other growth-promoting characteristics, including secretion of indole-3-acetic acid (IAA), production of siderophores and ACC deaminase, and antifungal activity, were further studied by qualitative and quantitative methods. In addition, whether the PGPB strains could still exert plant growth-promoting activity at 4°C was verified. The results showed that 67 isolates could maintain one or more growth-promoting traits at 4°C, and these isolates were defined as cold-adapted PGPB. They were divided into 8 genera by 16S rRNA gene sequencing and phylogenetic analysis, of which Pseudomonas (64.2%) and Serratia (13.4%) were the common dominant genera, and a few specific genera varied among the plant species. A test-tube culture showed that inoculation of Elymus nutans seedlings with cold-adapted PGPB possessing different functional characteristics had a significant growth-promoting effect under controlled low-temperature conditions, including the development of the roots and aboveground parts. Pearson correlation analysis revealed that different growth-promoting characteristics made different contributions to the development of the roots and aboveground parts. These cold-adapted PGPB can be used as excellent strain resources suitable for the near-natural restoration of degraded alpine grasslands or agriculture stock production in cold areas.
목차
등록된 정보가 없습니다.
참고문헌 (56)
참고문헌 신청
Zhang W / 2019 / Meta-analysis of the effects of grassland degradation on plant and soil properties in the alpine meadows of the Qinghai-Tibetan Plateau / Glob. Ecol. Conserv 20:e00774
Gao QZ / 2010 / Alpine grassland degradation index and its response to recent climate variability in Northern Tibet, China / Quatern Int 226:143~150
Chen Y / 2017 / Plant diversity represents the prevalent determinant of soil fungal community structure across temperate grasslands in northern China / Soil Biol. Biochem 110:12~21
Zhang C / 2018 / Interactions of soil bacteria and fungi with plants during long-term grazing exclusion in semiarid grasslands / Soil Biol. Biochem 124:47~58
Wagg C / 2019 / Fungal-bacterial diversity and microbiome complexity predict ecosystem functioning / Nat. Commun 10:4841
Gao QZ / 2010 / Alpine grassland degradation index and its response to recent climate variability in Northern Tibet, China / Quatern Int 226:143~150
Chen Y / 2017 / Plant diversity represents the prevalent determinant of soil fungal community structure across temperate grasslands in northern China / Soil Biol. Biochem 110:12~21
Zhang C / 2018 / Interactions of soil bacteria and fungi with plants during long-term grazing exclusion in semiarid grasslands / Soil Biol. Biochem 124:47~58
Wagg C / 2019 / Fungal-bacterial diversity and microbiome complexity predict ecosystem functioning / Nat. Commun 10:4841
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