[1]唐鋆,郭文锋,阳莎,等. 昆虫与根结线虫危害对乌桕根际土壤线虫群落结构的影响[J].西北林学院学报,2023,38(4):173-179.[doi:10.3969/j.issn.1001-7461.2023.04.22]
　TANG Yun,GUO Wen-feng,YANG Sha,et al. Effects of Insect and Root-Knot Nematode Damage on the Community Structure of Rhizosphere Soil Nematodes of Triadica sebifera[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(4):173-179.[doi:10.3969/j.issn.1001-7461.2023.04.22]
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 昆虫与根结线虫危害对乌桕根际土壤线虫群落结构的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第4期
页码:
173-179
栏目:
出版日期:
2023-07-31

文章信息/Info

Title:
 Effects of Insect and Root-Knot Nematode Damage on the Community Structure of Rhizosphere Soil Nematodes of Triadica sebifera
文章编号:
1001-7461(2023)04-0173-07
作者:
 唐鋆1; 郭文锋2; 阳莎1; 李晓琼1*
 （1.广西大学 林学院，广西森林生态与保育重点实验室，广西 南宁 530004；2.广西农业科学院，广西作物遗传改良生物技术重点开放实验室，广西 南宁 530007）
Author(s):
 TANG Yun1; GUO Wen-feng2; YANG Sha1; LI Xiao-qiong1*
 (1.Guangxi Key Laboratory of Forest Ecology and Conservation,College of Forestry,Guangxi University,Nanning 530004,Guangxi,China; 2.Guangxi Crop Genetic Improvement and Biotechnology Laboratory,Guangxi Academy of Agricultural Sciences,Nanning 530007,Guangxi,China)
关键词:
 ; 地上-地下互作; 线虫; 群落结构; 多样性; 食性
Keywords:
 ; above-belowground interaction;  nematode;  community structure;  diversity;  diet breadth
分类号:
S769
DOI:
10.3969/j.issn.1001-7461.2023.04.22
文献标志码:
A
摘要:
 地上与地下植食性害虫取食能影响植物根际土壤线虫的群落结构，但其机制尚不明确。以土壤线虫为生物指标，对地上害虫（专食性癞皮夜蛾、广食性斜纹夜蛾）及南方根结线虫的单独或共同取食对乌桕根际土壤线虫群落结构的影响差异进行研究。与无取食处理相比，癞皮夜蛾单独取食下植物寄生线虫的相对丰度显著增加，食细菌线虫的相对丰度与土壤线虫的群落多样性显著降低；斜纹夜蛾单独取食下食真菌线虫的相对丰度与土壤线虫的群落多样性均显著增加；南方根结线虫单独取食下，食真菌与食细菌线虫比例（F/B）显著升高，线虫通路比值（NCR）则显著减小。斜纹夜蛾与南方根结线虫共同取食下土壤线虫群落的食真菌线虫相对丰度显著增加。这些结果表明，与地下植食性生物相比，地上植食性昆虫对土壤线虫群落结构的影响较大，且不同食性的地上害虫对土壤线虫群落结构的调控机制不同。
Abstract:
 Aboveground and belowground herbivores can affect the community structure of plant rhizosphere soil nematodes,but the mediating mechanism is still unclear.With nematodes as biological indexes,the differences in the community structure of Triadica sebifera rhizosphere soil nematodes were compared under the single or joint herbivory by the aboveground herbivores (the specialist Gadirtha fusca,and the generalist Spodoptera litura) and the root-knot nematode Meloidogyne incognita.Compared to without herbivory,the relative abundance of plant-parasites significantly increased but the relative abundance of bacterivores and community diversity of soil nematodes significantly decreased under the single herbivory by G.fusca; while the relative abundance of fungivores and community diversity of soil nematodes all significantly increased under the single herbivory by S.litura; the fungivores to bacterivores ratio (F/B) was significantly higher but the nematode channel ratio (NCR) was significantly lower under the single herbivory by M.incognita.The relative abundance of fungivores was significantly higher under the joint herbivory by S.litura and M.incognita compared to without herbivory.The results indicate that aboveground herbivores exert greater impacts on the community structure of soil nematodes compared with belowground herbivores,and the regulation mechanisms of the aboveground herbivores on the community structure of soil nematodes vary greatly with diet breadth.

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备注/Memo

备注/Memo:
 收稿日期：2022-07-26 修回日期：2023-03-21
基金项目：国家自然科学基金（31800423,31660087）；广西自然科学基金青基项目（2018GXNSFBA281172）。
第一作者：唐鋆。研究方向：植物与昆虫的相互作用及协同进化。E-mail:13598848483@163.com
*通信作者：李晓琼，博士，副教授。研究方向：植物与昆虫的相互作用及协同进化。E-mail:lixiaoqiong100@163.com
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