Evidence map›Paper›PMID 19301039›Full record

ArticleMycorrhiza2009

Molecular diversity of arbuscular mycorrhizal fungi in onion roots from organic and conventional farming systems in the Netherlands.

Guillermo A Galván, István Parádi, Karin Burger, Jacqueline Baar, Thomas W Kuyper, Olga E Scholten, Chris Kik

Abstract readComparative Study
In one paragraph

Article in Mycorrhiza, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed.

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  19. Genetic analysis of the interaction between Allium species and arbuscular mycorrhizal fungi.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2011
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Guillermo A GalvánPlant Research International, Wageningen University and Research Center, P.O. Box 16, 6700 AA, Wageningen, The Netherlands. horticrs@fagro.edu.uy.
István ParádiMushroom Section of Applied Plant Research, Plant Research International, Wageningen University and Research Centre, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.
Karin BurgerPlant Research International, Wageningen University and Research Center, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.
Jacqueline BaarMushroom Section of Applied Plant Research, Plant Research International, Wageningen University and Research Centre, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.
Thomas W KuyperDepartment of Soil Quality, Wageningen University and Research Center, P.O. Box 47, 6700 AA, Wageningen, The Netherlands.
Olga E ScholtenPlant Research International, Wageningen University and Research Center, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.
Chris KikPlant Research International, Wageningen University and Research Center, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Diversity and colonization levels of naturally occurring arbuscular mycorrhizal fungi (AMF) in onion roots were studied to compare organic and conventional farming systems in the Netherlands. In 2004, 20 onion fields were sampled in a balanced survey between farming systems and between two regions, namely, Zeeland and Flevoland. In 2005, nine conventional and ten organic fields were additionally surveyed in Flevoland. AMF phylotypes were identified by rDNA sequencing. All plants were colonized, with 60% for arbuscular colonization and 84% for hyphal colonization as grand means. In Zeeland, onion roots from organic fields had higher fractional colonization levels than those from conventional fields. Onion yields in conventional farming were positively correlated with colonization level. Overall, 14 AMF phylotypes were identified. The number of phylotypes per field ranged from one to six. Two phylotypes associated with the Glomus mosseae-coronatum and the G. caledonium-geosporum species complexes were the most abundant, whereas other phylotypes were infrequently found. Organic and conventional farming systems had similar number of phylotypes per field and Shannon diversity indices. A few organic and conventional fields had larger number of phylotypes, including phylotypes associated with the genera Glomus-B, Archaeospora, and Paraglomus. This suggests that farming systems as such did not influence AMF diversity, but rather specific environmental conditions or agricultural practices.

Indexed as

AgricultureBiodiversityDNA, FungalDNA, RibosomalGlomeromycotaMycorrhizaeNetherlandsOnionsPhylogenyPlant RootsSoil MicrobiologyDNA, FungalDNA, Ribosomal

Identifiers

PMID19301039
PMCPMC2687515

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.