Endophytic infection increases the belowground over-yielding effects of the host grass community mainly by increasing the complementary effects.
Endophytic infection increases the belowground over-yielding effects of the host grass community mainly by increasing the complementary effects.
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DOI：
10.3389/fpls.2023.1191904
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发表时间：
2023
影响因子：
5.6
通讯作者：
Ren, Anzhi
中科院分区：
文献类型：
--
作者：
Qu, Yaobing;Qin, Tianzi;Zhang, Junzhen;Deng, Yongkang;Yu, Xinhe;Wei, Xianqin;Zhao, Nianxi;Gao, Yubao;Ren, Anzhi
植物物种多样性的增加可能会增加群落多样性效应并产生群落超产。 Epichloë内生菌作为共生微生物，也具有调节植物群落的能力，但其对群落多样性的影响往往被忽视。在本实验中，我们通过构建人工群落，将内生菌感染的（E+）和无内生菌（E-）的西伯利亚芨芨草及其原生地的三种常见植物盆栽于活土和灭菌土壤中，构建1种单一栽培以及2种和4种混合物的人工群落，研究内生菌对寄主植物群落生物量多样性的影响。结果表明，内生菌感染显着增加了隐子草的地下生物量和丰度，略微显着增加了大针茅的丰度，并显着增加了4个物种混合物的群落多样性（均匀度）。内生菌感染还显着增加了活土中4种混合物对地下生物量的超产效应，而对地下生物量多样性效应的增加主要是由于内生菌显着增加了对地下生物量的互补效应。土壤微生物对4种混合物地下生物量多样性效应的影响主要来源于其对互补效应的影响。内生菌和土壤微生物对4个物种群落地下生物量多样性的影响是独立的，并且两者对地下生物量的互补作用相似。内生菌感染促进物种多样性水平较高的活土中地下超产的发现表明，内生菌可能是物种多样性与生产力之间正相关的因素之一，并解释了内蒙古草原内生菌感染的西伯利亚芨芨草与多种植物的稳定共存。
Increases in plant species diversity may increase the community diversity effect and produce community over-yielding. Epichloë endophytes, as symbiotic microorganisms, are also capable of regulating plant communities, but their effects on community diversity effects are often overlooked. In this experiment, we investigated the effects of endophytes on the diversity effects of host plant community biomass by constructing artificial communities with 1-species monocultures and 2- and 4-species mixtures of endophyte-infected (E+) and endophyte-free (E-) Achnatherum sibiricum and three common plants in its native habitat, which were potted in live and sterilized soil. The results showed that endophyte infection significantly increased the belowground biomass and abundance of Cleistogenes squarrosa, marginally significantly increased the abundance of Stipa grandis and significantly increased the community diversity (evenness) of the 4-species mixtures. Endophyte infection also significantly increased the over-yielding effects on belowground biomass of the 4-species mixtures in the live soil, and the increase in diversity effects on belowground biomass was mainly due to the endophyte significantly increasing the complementary effects on belowground biomass. The effects of soil microorganisms on the diversity effects on belowground biomass of the 4-species mixtures were mainly derived from their influences on the complementary effects. The effects of endophytes and soil microorganisms on the diversity effects on belowground biomass of the 4-species communities were independent, and both contributed similarly to the complementary effects on belowground biomass. The finding that endophyte infection promotes belowground over-yielding in live soil at higher levels of species diversity suggests that endophytes may be one of the factors contributing to the positive relationship between species diversity and productivity and explains the stable co-existence of endophyte-infected Achnatherum sibiricum with a variety of plants in the Inner Mongolian grasslands.
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影响因子：
3.4
作者：
Larimer, Anna L.;Bever, James D.;Clay, Keith
通讯作者：
Clay, Keith
DOI：
10.3390/jof8060619
发表时间：
2022-06-10
期刊：
Journal of fungi (Basel, Switzerland)
影响因子：
--
作者：
通讯作者：
--
影响因子：
4.8
作者：
Afkhami, Michelle E.;Strauss, Sharon Y.
通讯作者：
Strauss, Sharon Y.
影响因子：
2.9
作者：
Arrieta, A. M.;Iannone, L. J.;Novas, M. V.
通讯作者：
Novas, M. V.
影响因子：
56.9
作者：
Clay, K;Holah, J
通讯作者：
Holah, J