种植模式对当归根际土壤真菌群落与功能类群的影响
作者:
作者单位:

(1.甘肃省农业科学院旱地农业研究所/ 植物保护研究所,甘肃 兰州 730070;2.甘肃省旱作区水资源高效利用重点实验室,甘肃 兰州 730070;3.甘肃农业大学生命科学技术学院/ 农学院,甘肃 兰州 730070)

作者简介:

姜小凤(1974-),副研究员,博士,主要从事土壤生态学及药用植物栽培等方面的研究。E-mail:jxf_5188@163.com。

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基金项目:

基金项目:甘肃省科技计划项目(民生科技专项- 乡村振兴专题22CX2NA007) ;甘肃省农业科学院农业科技自主创新专项重点研发计划项目(2021 GARS 11 );现代丝路寒旱农业科技支撑项目(GSLK-2022-6);国家重点研发计划课题及子课题(2021YFD1100504;2021YFD11005041;2021YFD11005042);国家自然科学基金(31460547,31560175,31360317)。


Effects of cropping pattern on soil fungal community and functional groups in rhizosphere soil of Angelica sinensis
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(1.Dryland Agriculture Institute/ Institude of PlantProtection,Gansu Academyof Agricultural Sciences,Lanzhou Gansu730070;2.Key Laboratory of High Water Utilization onDrvland of GansuProvince,Lanzhou Gansu730070;3.College of Life Science and Technology /AgronomyCollege,Gansu AgriculturalUniversity,Lanzhou Gansu730070)

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    摘要:

    再植障碍问题限制了当归产业健康发展。为了建立高效种植方式,在甘肃渭源县设置5 种种植方式[A:豌豆- 小麦- 当归;B:豌豆- 蒙古黄芪- 当归;C:豌豆- 马铃薯- 当归;D:豌豆- 当归- 当归(对照);E:豌豆- 休耕- 当归],采挖期通过Illumina Hisqe 2500 高通量测序平台测定了不同种植模式下当归根际土壤真菌ITS1 变异区的基因序列,分析不同种植方式对当归根际土壤真菌群落和功能差异性的影响。结果表明:(1)5 种种植方式下当归根际真菌多样性差异不大,较对照D 处理,A、B、C 和E 处理的Chao1 指数、Ace 指数和Shannon 指数较低,Simpson 指数较高。(2)5 种种植方式下当归根际土壤真菌群落隶属于11 门167 属,其中,子囊菌门(Ascomycota)、被孢菌门(Mortierellomycota)、担子菌亚门(Basidiomycota)和壶菌门(Chytridiomycota)为优势门;被孢霉属(Mortierella)、四枝孢属(Tetracladium)为优势属。(3)冗余度分析发现:在门水平影响土壤真菌群落结构组成的主要因子为速效钾、电导率、pH 值,在属水平影响土壤真菌群落结构组成的主要因子为有机质、pH 值、二氧化碳呼吸速率。(4)FUNGuild 预测表明:植物病原体和木质腐生真菌功能群的相对丰度较高。综上所述,不同作物轮作较当归连作,降低了当归根际土壤真菌群落的相对丰度和多样性,有利于根际土壤真菌群落向有益的方向发展。

    Abstract:

    The problem of replanting obstacle limits the healthy development of Angelica sinensisindustry.In order to establish an efficientplantingmethod,five planting methods were established inWeiyuancounty,Gansuprovince, includingA:pea -wheat-A.sinensis;B:pea -Mongolian astragalus-A.sinensis;C:pea -potato-A.sinensis;D:pea -A. sinensis-A.sinensis(control);E:pea -fallow-A.sinensis.The gene sequences of ITS1 variation region of fungi in the rhizosphere soil under different cropping patterns were determined during A.sinensis harvest period by Illumina Hisqe 2500sequencing platform,and the effects of different cropping patterns on fungal communities and functional differences in the rhizosphere soil wereanalyzed.The results showed asfollows:(1)Compared to the controlD,the Chao1 index,Ace index and Shannon index forA,B,C and E treatments werelower,but the Simpson index washigher.(2)Soil fungi communities in the rhizosphere under five planting methods attached to 167 genera in 11phyla,inwhich Ascomycota,Mortierellomycota,Basidiomycota and Chytridiomycota were the dominant phyla and Mortierella and Tetracladium were the dominantgenera.(3)Redundancy analysis showed that availablepotassium,electricalconductivity,and pH value were the main factors affecting soil fungal community structure atphylumlevel,while organicmatter,pHvalue,and carbon dioxide respiration rate werethe main factors affecting soil fungal community structure at genuslevel.(4)FUNGuild prediction showed that the relative abundances of functional groups of plant pathogens and woody saprophytic fungi werehigher.Inconclusion,compared with continuous croppingA.sinensis,different crops rotation reduced the relativeabundance and diversity of fungal communities in the rhizospheresoil,which was conducive to the profitable development of soil fungal communities in the rhizosphere soil.

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姜小凤,郭凤霞,陈垣,郭建国.种植模式对当归根际土壤真菌群落与功能类群的影响[J].中国土壤与肥料,2024,(1):28-36.

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  • 收稿日期:2022-12-22
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  • 录用日期:2023-03-13
  • 在线发布日期: 2024-04-09
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