{"title":"内生菌感染的茵芋对线虫群落以及甘蓝杂环虫卵囊和褐飞虱孢囊孵化的影响","authors":"Xuekai Wei, Zheng Liang, Changhui Guo, Tingting Ding, Xiuzhang Li, Kamran Malik, Chunjie Li","doi":"10.1007/s11104-025-07417-3","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Background and aims</h3><p><i>Achnatherum inebrians</i> is main poisonous bunchgrass in the grassland of northern China. Nematodes are the most prevalent and diverse group of multicellular animals in terrestrial ecosystems. The effects of endophytic fungus – <i>A. inebrians</i> symbiosis on nematodes were investigate to find a solution to control harmful nematodes in the soil so the crop can reach high yield level.</p><h3 data-test=\"abstract-sub-heading\">Methods</h3><p>Field experiments were conducted to investigate the effects of endophytic fungi on soil nematode communities in the rhizosphere of <i>A. inebrians</i>, and the effects of leaf and seed extract and root exudates of endophytic fungus – <i>A. inebrians</i> symbiosis on the hatching of nematodes cysts were measured in laboratory.</p><h3 data-test=\"abstract-sub-heading\">Results</h3><p>The diversity index of soil nematodes in the roots of <i>A. inebrians</i> was not significantly altered by endophytic fungi. However, grass-endophytic fungi altered the composition of the nematode community in the rhizosphere soil of <i>A. inebrians</i>. In addition, <i>Epichloë</i> endophytes had significant difference on the composition of functional groups of soil nematodes, especially on plant-parasitic nematodes. Nematode community in rhizosphere soil of endophyte-infected (E +) <i>A. inebrians</i> had higher <i>MI</i>, <i>SI</i>, <i>CI</i> and lower <i>PPI</i>, <i>PPI</i>/<i>MI</i> and <i>EI</i> indices. The individual density of predators/omnivores nematode in rhizosphere soil of endophyte-infected (E +) <i>A. inebrians</i> was significantly higher than that of endophyte-free (E-) <i>A. inebrians</i>. With the increase of concentration of stem, seed extract, and root exudates of <i>A. inebrians</i>, the inhibitory effects on hatching of nematode cysts were enhanced. At low concentrations of steam and seed extract as well as root exudates, <i>Epichloë</i> endophytes of <i>A. inebrians</i> affected the hatching effects on <i>H. glycines</i> oocysts and <i>M. incognita</i> cysts masses.</p><h3 data-test=\"abstract-sub-heading\">Conclusions</h3><p>Endophytic fungi affect the species composition and diversity of nematode communities in the rhizosphere soil of <i>A. inebrians</i>. The extract of stem and seed, and root exudates of symbiont of <i>A. inebrians</i>—<i>epichloë</i> endophytes have great inhibitory effect on hatching of <i>H. glycines</i> oocysts and <i>M. incognita</i> cysts.</p>","PeriodicalId":20223,"journal":{"name":"Plant and Soil","volume":"37 1","pages":""},"PeriodicalIF":3.9000,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The effect of endophyte-infected Achnatherum inebrians on nematode community and the hatching of Heterodera glycines oocysts and Meloidogyne incongnita cysts\",\"authors\":\"Xuekai Wei, Zheng Liang, Changhui Guo, Tingting Ding, Xiuzhang Li, Kamran Malik, Chunjie Li\",\"doi\":\"10.1007/s11104-025-07417-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Background and aims</h3><p><i>Achnatherum inebrians</i> is main poisonous bunchgrass in the grassland of northern China. Nematodes are the most prevalent and diverse group of multicellular animals in terrestrial ecosystems. The effects of endophytic fungus – <i>A. inebrians</i> symbiosis on nematodes were investigate to find a solution to control harmful nematodes in the soil so the crop can reach high yield level.</p><h3 data-test=\\\"abstract-sub-heading\\\">Methods</h3><p>Field experiments were conducted to investigate the effects of endophytic fungi on soil nematode communities in the rhizosphere of <i>A. inebrians</i>, and the effects of leaf and seed extract and root exudates of endophytic fungus – <i>A. inebrians</i> symbiosis on the hatching of nematodes cysts were measured in laboratory.</p><h3 data-test=\\\"abstract-sub-heading\\\">Results</h3><p>The diversity index of soil nematodes in the roots of <i>A. inebrians</i> was not significantly altered by endophytic fungi. However, grass-endophytic fungi altered the composition of the nematode community in the rhizosphere soil of <i>A. inebrians</i>. In addition, <i>Epichloë</i> endophytes had significant difference on the composition of functional groups of soil nematodes, especially on plant-parasitic nematodes. Nematode community in rhizosphere soil of endophyte-infected (E +) <i>A. inebrians</i> had higher <i>MI</i>, <i>SI</i>, <i>CI</i> and lower <i>PPI</i>, <i>PPI</i>/<i>MI</i> and <i>EI</i> indices. The individual density of predators/omnivores nematode in rhizosphere soil of endophyte-infected (E +) <i>A. inebrians</i> was significantly higher than that of endophyte-free (E-) <i>A. inebrians</i>. With the increase of concentration of stem, seed extract, and root exudates of <i>A. inebrians</i>, the inhibitory effects on hatching of nematode cysts were enhanced. At low concentrations of steam and seed extract as well as root exudates, <i>Epichloë</i> endophytes of <i>A. inebrians</i> affected the hatching effects on <i>H. glycines</i> oocysts and <i>M. incognita</i> cysts masses.</p><h3 data-test=\\\"abstract-sub-heading\\\">Conclusions</h3><p>Endophytic fungi affect the species composition and diversity of nematode communities in the rhizosphere soil of <i>A. inebrians</i>. The extract of stem and seed, and root exudates of symbiont of <i>A. inebrians</i>—<i>epichloë</i> endophytes have great inhibitory effect on hatching of <i>H. glycines</i> oocysts and <i>M. incognita</i> cysts.</p>\",\"PeriodicalId\":20223,\"journal\":{\"name\":\"Plant and Soil\",\"volume\":\"37 1\",\"pages\":\"\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2025-04-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plant and Soil\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1007/s11104-025-07417-3\",\"RegionNum\":2,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant and Soil","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1007/s11104-025-07417-3","RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
The effect of endophyte-infected Achnatherum inebrians on nematode community and the hatching of Heterodera glycines oocysts and Meloidogyne incongnita cysts
Background and aims
Achnatherum inebrians is main poisonous bunchgrass in the grassland of northern China. Nematodes are the most prevalent and diverse group of multicellular animals in terrestrial ecosystems. The effects of endophytic fungus – A. inebrians symbiosis on nematodes were investigate to find a solution to control harmful nematodes in the soil so the crop can reach high yield level.
Methods
Field experiments were conducted to investigate the effects of endophytic fungi on soil nematode communities in the rhizosphere of A. inebrians, and the effects of leaf and seed extract and root exudates of endophytic fungus – A. inebrians symbiosis on the hatching of nematodes cysts were measured in laboratory.
Results
The diversity index of soil nematodes in the roots of A. inebrians was not significantly altered by endophytic fungi. However, grass-endophytic fungi altered the composition of the nematode community in the rhizosphere soil of A. inebrians. In addition, Epichloë endophytes had significant difference on the composition of functional groups of soil nematodes, especially on plant-parasitic nematodes. Nematode community in rhizosphere soil of endophyte-infected (E +) A. inebrians had higher MI, SI, CI and lower PPI, PPI/MI and EI indices. The individual density of predators/omnivores nematode in rhizosphere soil of endophyte-infected (E +) A. inebrians was significantly higher than that of endophyte-free (E-) A. inebrians. With the increase of concentration of stem, seed extract, and root exudates of A. inebrians, the inhibitory effects on hatching of nematode cysts were enhanced. At low concentrations of steam and seed extract as well as root exudates, Epichloë endophytes of A. inebrians affected the hatching effects on H. glycines oocysts and M. incognita cysts masses.
Conclusions
Endophytic fungi affect the species composition and diversity of nematode communities in the rhizosphere soil of A. inebrians. The extract of stem and seed, and root exudates of symbiont of A. inebrians—epichloë endophytes have great inhibitory effect on hatching of H. glycines oocysts and M. incognita cysts.
期刊介绍：
Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.
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