PMID- 38475426
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20240315
IS  - 2223-7747 (Print)
IS  - 2223-7747 (Electronic)
IS  - 2223-7747 (Linking)
VI  - 13
IP  - 5
DP  - 2024 Feb 21
TI  - Response of Carbon-Fixing Bacteria to Patchy Degradation of the Alpine Meadow in 
      the Source Zone of the Yellow River, West China.
LID - 10.3390/plants13050579 [doi]
LID - 579
AB  - This study aims to enlighten our understanding of the distribution of soil 
      carbon-fixing bacteria (cbbL-harboring bacteria) and their community diversity in 
      differently degraded patches at three altitudes. MiSeq high-throughput sequencing 
      technology was used to analyze the soil carbon-fixing bacteria community 
      diversity of degraded patches and healthy meadow at three altitudes. Redundancy 
      analysis (RDA) and structural equation model (SEM) were used to analyze the 
      correlation and influence path between environmental factors and carbon-fixing 
      bacteria. The results showed that degradation reduced the relative abundance of 
      Proteobacteria from 99.67% to 95.57%. Sulfurifustis, Cupriavidus, and 
      Alkalispirillum were the dominant genera at the three altitudes. Hydrogenophaga 
      and Ectothiorhodospira changed significantly with altitude. RDA results confirmed 
      that available phosphorus (AP) was strongly and positively correlated with 
      Proteobacteria. AP and total nitrogen (TN) were strongly and positively 
      correlated with Hydrogenophaga. Grass coverage and sedge aboveground biomass were 
      strongly and positively correlated with Sulfurifustis and Ectothiorhodospira, 
      respectively. Elevation adversely affected the relative abundance of dominant 
      carbon-fixing bacteria and diversity index by reducing the coverage of grass and 
      soil volumetric moisture content (SVMC) indirectly, and also had a direct 
      positive impact on the Chao1 index (path coefficient = 0.800). Therefore, 
      increasing the content of nitrogen, phosphorus and SVMC and vegetation coverage, 
      especially sedge and grass, will be conducive to the recovery of the diversity of 
      soil carbon-fixing bacteria and improve the soil autotrophic microbial carbon 
      sequestration potential in degraded meadows, especially in high-altitude areas.
FAU - Sun, Huafang
AU  - Sun H
AD  - State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture 
      and Animal Husbandry, Qinghai University, Xining 810016, China.
AD  - College of Eco-Environment and Resources, Qinghai University for Nationalities, 
      Xining 810007, China.
FAU - Su, Xiaoxue
AU  - Su X
AD  - State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture 
      and Animal Husbandry, Qinghai University, Xining 810016, China.
FAU - Jin, Liqun
AU  - Jin L
AD  - State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture 
      and Animal Husbandry, Qinghai University, Xining 810016, China.
FAU - Li, Chengyi
AU  - Li C
AD  - State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture 
      and Animal Husbandry, Qinghai University, Xining 810016, China.
FAU - Kou, Jiancun
AU  - Kou J
AD  - College of Grassland Agriculture, Northwest A&F University, Yangling 712100, 
      China.
FAU - Zhang, Jing
AU  - Zhang J
AD  - State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture 
      and Animal Husbandry, Qinghai University, Xining 810016, China.
FAU - Li, Xilai
AU  - Li X
AD  - State Key Laboratory of Plateau Ecology and Agriculture, College of Agriculture 
      and Animal Husbandry, Qinghai University, Xining 810016, China.
LA  - eng
GR  - U21A20191/National Natural Sciences Foundation of China/
GR  - 2023-QY-210/Qinghai Science and Technology Department/
GR  - D18013/the 111 Project/
GR  - no grant number/'Sanjiangyuan Ecological Evolution and Management Innovation 
      Team'/
GR  - no grant number/the project of ecosystem succession and management direction in 
      the world-class discipline of ecology at Qinghai University/
PT  - Journal Article
DEP - 20240221
PL  - Switzerland
TA  - Plants (Basel)
JT  - Plants (Basel, Switzerland)
JID - 101596181
PMC - PMC10935246
OTO - NOTNLM
OT  - cbbL
OT  - elevational variation
OT  - high-throughput sequencing
OT  - soil physical and chemical properties
OT  - vegetation characteristics
COIS- The authors declare no conflicts of interest.
EDAT- 2024/03/13 06:47
MHDA- 2024/03/13 06:48
PMCR- 2024/02/21
CRDT- 2024/03/13 01:32
PHST- 2023/11/07 00:00 [received]
PHST- 2024/02/01 00:00 [revised]
PHST- 2024/02/06 00:00 [accepted]
PHST- 2024/03/13 06:48 [medline]
PHST- 2024/03/13 06:47 [pubmed]
PHST- 2024/03/13 01:32 [entrez]
PHST- 2024/02/21 00:00 [pmc-release]
AID - plants13050579 [pii]
AID - plants-13-00579 [pii]
AID - 10.3390/plants13050579 [doi]
PST - epublish
SO  - Plants (Basel). 2024 Feb 21;13(5):579. doi: 10.3390/plants13050579.