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Changes in the root fungal microbiome of strawberry following application of residues of the biofumigant oilseed radish

Nallanchakravarthula, Srivathsa and Marupakula, Srisailam and Alström, Sadhna and Finlay, Roger and Mahmood, Shahid (2021). Changes in the root fungal microbiome of strawberry following application of residues of the biofumigant oilseed radish. Applied Soil Ecology. 168 , 104116
[Research article]

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Abstract

Biofumigation has been proposed as an environmentally friendly method of plant protection against soil-borne pathogens, but its effects on microbial communities are still incompletely understood. Using high throughput DNA sequencing, we investigated the effects of oilseed radish residues on the root fungal microbiome of strawberry in the presence of a soil-borne fungal pathogen, Verticillium dahliae. Results of our greenhouse study show that early flowering occurred in response to residue addition, suggesting a plant stress-response and there was a significant decrease in berry yield. The fungal microbiome of roots was significantly restructured by both biofumigation and inoculation with Verticillium. In particular, the abundance of root endophyte- and arbuscular mycorrhizal functional guilds was reduced significantly as a result of biofumigant and V. dahliae addition, whereas the abundance of saprotrophs increased significantly when both treatments were applied together. Alpha diversity analyses of fungi associated with roots indicated a significant increase in species richness following Verticillium inoculation, whereas the biofumigant alone or in the presence of V. dahliae resulted in no significant effect, suggesting that apparently some rare taxa may have been enriched/stimulated in the presence of the pathogen. Further investigations should reveal whether negative effects of biofumigation on potentially beneficial root associated endophytes and arbuscular mycorrhizal fungi are host genotype- or soil-dependent.

Authors/Creators:Nallanchakravarthula, Srivathsa and Marupakula, Srisailam and Alström, Sadhna and Finlay, Roger and Mahmood, Shahid
Title:Changes in the root fungal microbiome of strawberry following application of residues of the biofumigant oilseed radish
Series Name/Journal:Applied Soil Ecology
Year of publishing :2021
Volume:168
Article number:104116
Number of Pages:10
ISSN:0929-1393
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Root fungal communities, High throughput sequencing, Biofumigation, Raphanus sativus, Verticillium dahliae, Fragaria × ananassa
URN:NBN:urn:nbn:se:slu:epsilon-p-113629
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113629
Additional ID:
Type of IDID
DOI10.1016/j.apsoil.2021.104116
ID Code:25444
Faculty:S - Faculty of Forest Sciences
NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Forest Mycology and Plant Pathology
(S) > Dept. of Forest Mycology and Plant Pathology
Deposited By: SLUpub Connector
Deposited On:20 Sep 2021 07:25
Metadata Last Modified:20 Sep 2021 07:31

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