How do mycorrhizal suppression and plant functional group loss affect plant communities in Inner Mongolia Steppe?
How do mycorrhizal suppression and plant functional group loss affect plant communities in Inner Mongolia Steppe?
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菌根抑制和植物功能群丧失对内蒙古草原植物群落有何影响？
DOI：
10.1111/jvs.12640
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发表时间：
2018-06
影响因子：
2.8
通讯作者：
Zhang Yingjun
中科院分区：
文献类型：
--
作者：
Yang Xin;Shen Yue;Chen Jishan;Guo Yanping;Zhang Yingjun
协调编辑：弗朗西斯科Pugnaire摘要目标：虽然许多研究已经调查了生物多样性丧失如何影响生态系统功能，但我们仍然不了解它如何与丛枝菌根真菌（AMF）相互作用，影响天然草地植物群落。在这里，我们进行了一个去除实验，以研究AMF抑制和植物功能组（PFG）的去除如何影响草地地上生产力和群落组成，并确定AMF是否改变补偿能力的剩余植物。地点：中国内蒙古草原。研究方法：我们通过施用Topsin®M作为土壤淋洗剂来抑制AMF活性，并选择性地去除PFG以得到三种处理（不去除、去除C3草和去除C4草和杂类草）。然后，我们测量了各种植物，土壤和AMF参数为每个处理组合。结果：TopsinM的加入有效地减少了所有PFG去除处理的菌根根定殖。此外，AMF的存在和PFGs的去除都显著影响了地上生产力。当C3草被去除时，C4草和杂类草都不能补偿生物量的下降，AMF的存在并不影响它们的补偿能力。相反，C3草可以完全补偿C4草和杂类草的去除，但AMF的存在降低了它们的补偿能力。C4禾草和杂类草的去除显着增加了C3禾草的地上部磷含量，但AMF略有下降。与此相反，AMF显着增加植物磷含量的C4草和杂类草在所有三个PFG去除处理。结论：我们的研究结果强调了AMF在各种生物多样性丧失情景下构建自然地上生产力的重要性，并表明AMF将能够修改植被动态，以应对未来植物多样性的丧失。
Co-ordinating Editor: Francisco Pugnaire Abstract Aims: Although many studies have investigated how biodiversity loss impacts ecosystem functioning, we still have little understanding of how it interacts with arbuscular mycorrhizal fungi (AMF) to affect plant communities in natural grasslands. Here, we conducted a removal experiment to examine how AMF suppression and plant functional group (PFG) removal affect aboveground productivity and community composition in a grassland, and to determine whether AMF alter the compensation ability of the remaining plants. Location: Inner Mongolian grassland, China. Methods: We suppressed AMF activities by applying Topsin®M as a soil drench and selectively removed PFGs to give three treatments (no removal, removal of C3 grasses and removal of both C4 grasses and forbs). We then measured various plant, soil and AMF parameters for each treatment combination. Results: The addition of TopsinM effectively reduced mycorrhizal root colonization across all of the PFG removal treatments. Furthermore, aboveground productivity was significantly impacted by both the presence of AMF and the removal of PFGs. When C3 grasses were removed, neither C4 grasses nor forbs compensated for the biomass decline, and the presence of AMF did not affect their compensation ability. Conversely, C3 grasses could completely compensate for the removal of both C4 grasses and forbs, but the presence of AMF reduced their compensation ability. The removal of both C4 grasses and forbs dramatically increased the shoot P content of C3 grasses but AMF slightly decreased this. In contrast, AMF significantly increased the plant P content of C4 grasses and forbs across all three PFG removal treatments. Conclusion: Our results highlight the importance of AMF in structuring natural aboveground productivity under various biodiversity loss scenarios, and indicate that AMF will be able to modify vegetation dynamics in response to the future loss of plant diversity.
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影响因子：
4.9
作者：
Kong, Deliang;Wu, Huifang;Han, Xingguo
通讯作者：
Han, Xingguo
影响因子：
2.8
作者：
G. Wilson;M. M. Williamson-M.
通讯作者：
G. Wilson;M. M. Williamson-M.
影响因子：
1.7
作者：
Kathryn N. S. McCain;G. Wilson;J. Blair
通讯作者：
Kathryn N. S. McCain;G. Wilson;J. Blair
影响因子：
4.2
作者：
Hui Tian;J. Gai;Junling Zhang;P. Christie;X. Li
通讯作者：
Hui Tian;J. Gai;Junling Zhang;P. Christie;X. Li
影响因子：
3.4
作者：
P. Adler;J. Bradford
通讯作者：
P. Adler;J. Bradford