Microbial mediators of plant community response to long‐term N and P fertilization: Evidence of a role of plant responsiveness to mycorrhizal fungi
Microbial mediators of plant community response to long‐term N and P fertilization: Evidence of a role of plant responsiveness to mycorrhizal fungi
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植物群落对长期氮肥和磷肥反应的微生物介体：植物对菌根真菌反应作用的证据
DOI：
10.1111/gcb.16091
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发表时间：
2022
影响因子：
11.6
通讯作者：
Bever, James D.
中科院分区：
文献类型：
--
作者：
Wang, Guangzhou;Koziol, Liz;Foster, Bryan L.;Bever, James D.
气候变化和人类活动对植物多样性和生态系统功能造成了广泛的威胁。了解植物物种周转的机制，跨营养梯度是至关重要的，制定成功的管理和恢复策略。我们测试了土壤微生物，特别是丛枝菌根真菌（AMF）是否以及如何介导植物群落对草地系统中15年长期N（0，4，8和16 g N m-2 year-1）和P（0和8 g N m-2 year-1）富集的反应。结果表明，氮、磷的富集导致植物群落多样性降低，群落组成发生变化，多年生C4禾本科植物明显减少，而一年生植物和多年生杂类植物增加。土壤真菌群落的元编码分析表明，氮、磷胁迫改变了土壤真菌的多样性和组成，其中只有一簇AMF对磷处理高度敏感，并与多年生C4禾本科植物的覆盖率变化呈负相关。此外，通过估计的菌根反应（MR）的41种植物在田间试验中，从264个独立的测试，我们发现，社区加权平均MR的植物群落大大减少与养分富集，并与C4 graminoids覆盖率呈正相关。协方差分析和结构方程模型均表明，多年生C4类禾本科植物产量下降的主要预测因子是MR的变化，而不是AMF组成的变化，这表明C4类禾本科植物对AMF敏感的能量成本可能导致其竞争能力低于其他群体。我们的研究结果表明，菌根响应植物的竞争能力的变化，可以驱动植物群落的变化，人为富营养化，这表明菌根互惠的生态恢复气候或人为退化的土壤群落的功能效益。
Climate changes and anthropogenic nutrient enrichment widely threaten plant diversity and ecosystem functions. Understanding the mechanisms governing plant species turnover across nutrient gradients is crucial to developing successful management and restoration strategies. We tested whether and how soil microbes, particularly arbuscular mycorrhizal fungi (AMF), could mediate plant community response to a 15 years long‐term N (0, 4, 8, and 16 g N m−2year−1) and P (0 and 8 g N m−2year−1) enrichment in a grassland system. We found N and P enrichment resulted in plant community diversity decrease and composition change, in which perennial C4graminoids were dramatically reduced while annuals and perennial forbs increased. Metabarcoding analysis of soil fungal community showed that N and P changed fungal diversity and composition, of which only a cluster of AMF identified by the co‐occurrence networks analysis was highly sensitive to P treatments and was negatively correlated with shifts in percentage cover of perennial C4graminoids. Moreover, by estimating the mycorrhizal responsiveness (MR) of 41 plant species in the field experiment from 264 independent tests, we found that the community weighted mean MR of the plant community was substantially reduced with nutrient enrichment and was positively correlated with C4graminoids percentage cover. Both analyses of covariance and structural equation modeling indicated that the shift in MR rather than AMF composition change was the primary predictor of the decline in perennial C4graminoids, suggesting that the energy cost invested by C4plants on those sensitive AMF might drive the inferior competitive abilities compared with other groups. Our results suggest that shifts in the competitive ability of mycorrhizal responsive plants can drive plant community change to anthropogenic eutrophication, suggesting a functional benefit of mycorrhizal mutualism in ecological restoration following climatic or anthropogenic degradation of soil communities.
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影响因子：
16.6
作者：
Lekberg Y;Arnillas CA;Borer ET;Bullington LS;Fierer N;Kennedy PG;Leff JW;Luis AD;Seabloom EW;Henning JA
通讯作者：
Henning JA
植物基因型与食草动物的偏好和表现：品种影响苹果对食花象甲 Anthonomus pomorum 的抗性
影响因子：
1.6
作者：
K. Mody;J. Collatz;S. Dorn
通讯作者：
S. Dorn
施肥对墨西哥湾西部沿岸草原菌根生产和投资的影响
DOI：
--
发表时间：
2010
期刊：
影响因子：
--
作者：
S. Nijjer;W. E. Rogers;E. Siemann
通讯作者：
E. Siemann
影响因子：
11.6
作者：
Han, Yunfeng;Feng, Jiguang;Zhu, Biao
通讯作者：
Zhu, Biao
影响因子：
10.5
作者：
Bever JD;Platt TG;Morton ER
通讯作者：
Morton ER