Warming affects herbaceous germination, early survival, and growth by shifting plant-soil microbe interactions in an alpine ecosystem

Wang, Jiajia; Bonser, Stephen P.; Liu, Kun; Liu, Ziyang; Gao, Haining; Cui, Hanwen; Chen, Jingwei; Wang, Yajun; Song, Hongxian; Liu, Meng; Yang, Xue; Wang, Xiangtai; An, Lu; Xiao, Sa; Chen, Shuyan

doi:10.1007/s11104-023-05921-y

Cited by 3 publications

(1 citation statement)

References 85 publications

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“…The relative abundance of Acidobacteria and Nitrospirae in unsterilized soil was significantly higher than that in sterilized soil, and the seed germination rate of unsterilized soil was higher than that of sterilized soil, which indicated that the high abundance of Acidobacteria and Nitrospirae promoted seed germination. Climate warming can affect seed germination and seedling growth by changing plant-soil microbial interactions, and Acidobacteria members play a key role in plant-soil microbial interactions, demonstrating that the abundance of Acidobacteria and Nitrospirae can improve the adverse effects of climate warming on seed germination and plant performance [50]. As the main member of plant PGPR (plant growth-promoting rhizobacteria), Bacillus is famous for its nitrogen fixation ability.…”

Section: Effect Of Spermosphere Bacteria Abundance On Seed Germinatio...mentioning

confidence: 99%

Spermosphere Bacteria Promote Ormosia henryi Seed Germination by Activating Metabolic Pathways

Meng

Xiao-li

2023

Forests

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Spermosphere microorganisms are affected by seed exudates (carbon deposits) and interact with each other around the germinating seeds. The interactions in this region will have an important impact on seed germination, plant growth, and development. Ormosia henryi Prain is a rare and endangered tree species with hardseed in China that generally shows low levels of natural regeneration. However, good levels of natural regeneration were observed under a few mother trees in Guanling County (Guizhou Province, China). Based on this phenomenon: we raise the question: Is the seed germination of Ormosia henryi in high-level natural regeneration areas driven by the spermosphere microbe and what is the driving mechanism? The purpose of this study was to explore the promoting role of spermosphere bacteria in different stages of germination, so as to provide a theoretical basis for screening strong colonization ability spermosphere functional bacteria. Thus, in this study, we designed a germination experiment simulating the natural soil (sterilized and unsterilized) of Guanling County. We used 16S rRNA gene sequencing and widely targeted multiple reaction monitoring (MRM) metabolomic analysis to analyze bacterial microbial diversity and the metabolic profiles of seed exudates at the four stages of seed germination: imbibition, radicle protrusion, radicle elongation, and cotyledon protrusion. The results indicated that some spermosphere bacteria: taxa of Bacillus, Acidobacteriales, Nitrospira, and Ellin6067, and other functional bacteria may play important roles in promoting seed germination depending largely on their functional characteristics and abundance. The critical period for spermosphere bacteria to promote seed germination was at the radicle protrusion stage in the unsterilized soil group, levels of metabolites such as sugars and amino acids of seed exudates were increased in this stage, more respiratory pathways were activated and seed respiratory metabolism was enhanced. Spermosphere bacteria of wild Ormosia henryi in the Guanling area appeared to promote the germination of O. henryi seeds, mainly through activating galactose metabolism and the lysine degradation pathway to provide energy for germination.

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Section: Effect Of Spermosphere Bacteria Abundance On Seed Germinatio...mentioning

confidence: 99%

Spermosphere Bacteria Promote Ormosia henryi Seed Germination by Activating Metabolic Pathways

Meng

Xiao-li

2023

Forests

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Spermosphere bacterial community at different germination stages of Ormosia henryi and its relationship with seed germination

Ge,

Wei

2024

Scientia Horticulturae

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Transcriptional Changes Underlying the Degradation of Plant Community in Alpine Meadow Under Seasonal Warming Impact

Niu,

Jin,

Yin

et al. 2024

Plant Cell & Environment

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Global warming is exhibiting a seasonal trend, while different seasons have different warming variations. However, the impact of seasonal warming on plants remains unclear. This study employed Open Top Chambers (OTCs) to simulate future seasonal warming scenarios in alpine meadow. The study examined plant community dynamics following long‐term seasonal warming. The transcriptional and physiological responses of two dominant species (Kobresia pygmaea and Stipa purpurea) were examined. Results suggest that seasonal warming effects are correlated with both the duration of warming and the season which warming occurs. A long annual warming duration, especially growing season warming, made plants confront various stresses. K. pygmaea adopted a stress‐avoidance strategy, showing a negative response, and leading to population decline or disappearance. This kind of dieback had also been observed in other Cyperaceae species. Meanwhile, due to positive responses, S. purpurea adopted a stress‐tolerance strategy and overcame the impact of warming, partially gained the dominance over Cyperaceae species. Overall vegetation coverage and plant community diversity decreased over the years. These results reveal the impact of seasonal warming to plants, explaining the reasons for changes in plant communities under seasonal warming and providing new insights for future plant conservation under seasonal warming.

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Warming affects herbaceous germination, early survival, and growth by shifting plant-soil microbe interactions in an alpine ecosystem

Cited by 3 publications

References 85 publications

Spermosphere Bacteria Promote Ormosia henryi Seed Germination by Activating Metabolic Pathways

Spermosphere Bacteria Promote Ormosia henryi Seed Germination by Activating Metabolic Pathways

Spermosphere bacterial community at different germination stages of Ormosia henryi and its relationship with seed germination

Transcriptional Changes Underlying the Degradation of Plant Community in Alpine Meadow Under Seasonal Warming Impact

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