<scp>PM</scp> 7/39 (2) <i>Aphelenchoides besseyi</i>

doi:10.1111/epp.12432

Cited by 8 publications

(1 citation statement)

References 17 publications

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“…After its first description by Christie (1942), Yokoo (1949) identified another Aphelenchoides oryzae species, but this was later considered a synonym of A. besseyi due to the overlaps of several morphological characters (Allen, 1952). Several characteristics such as stylet length (Fortuner, 1970) have been added as standards to identify A. besseyi globally (Bulletin, 2017). More recently, molecular analyses indicated that A. besseyi may consist of several genetically diverged clades.…”

Section: Introductionmentioning

confidence: 99%

TheAphelenchoidesgenomes reveal substantial horizontal gene transfers in the last common ancestor of free-living and major plant parasitic nematodes

Lai

Lee

et al. 2022

Preprint

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Aphelenchoides besseyi is a plant-parasitic nematode (PPN) in the Aphelenchoididae family capable of infecting more than 200 plants. A. besseyi is also a species complex with strains exhibiting varying pathogenicity to plants. We present the genome and annotations of six Aphelenchoides species, four of which belonged to the A. besseyi species complex. Most Aphelenchoides have a genome size of 44.7-47.4 Mb and are amongst the smallest in the clade IV, with the exception of A. fujianensis, which has a size of 143.8 Mb and is the largest. Phylogenomic analysis successfully delimited the species complex into A. oryzae and A. pseudobesseyi and revealed a reduction of transposon elements in the last common ancestor of Aphelenchoides. Synteny analyses between reference genomes indicated that three chromosomes in A. besseyi were derived from fission and fusion events. A systematic identification of horizontal gene transfer (HGT) genes across 27 representative nematodes allowed us to identify two major episodes of acquisition corresponding to the last common ancestor of clade IV or major PPNs, respectively. These genes were mostly lost and differentially retained between clades or strains. Most HGT events were acquired from bacteria, followed by fungi, and also from plants which was especially prevalent in Bursaphelenchus mucronatus. Our results establish a comprehensive understanding on new origins of horizontal gene transfer in nematodes.

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Section: Introductionmentioning

confidence: 99%

TheAphelenchoidesgenomes reveal substantial horizontal gene transfers in the last common ancestor of free-living and major plant parasitic nematodes

Lai

Lee

et al. 2022

Preprint

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Aphelenchoides besseyi causing leaf spot on cowpea under field conditions in Brazil

Noronha

Assunção

Muñiz

et al. 2023

Australasian Plant Dis. Notes

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Aphelenchoides besseyi was detected as the causal agent of foliar dark spots on cowpea plants growing in the field, and its pathogenicity was confirmed. The identity of the nematode was determined through morphological, morphometric, and molecular characterization, using species-specific primers Abess_11F/Abess_11R targeting 28S rDNA, which amplified a fragment of 570 bp. This is the first report of A. besseyi parasitizing cowpea under field conditions in Brazil.

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The Aphelenchoides genomes reveal substantial horizontal gene transfers in the last common ancestor of free‐living and major plant‐parasitic nematodes

Lai

Lee

et al. 2023

Molecular Ecology Resources

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Aphelenchoides besseyi is a plant-parasitic nematode (PPN) in the family Aphelenchoididae capable of infecting more than 200 plant species. A. besseyi is also a species complex with strains exhibiting varying pathogenicity to plants. We present the genome and annotations of six Aphelenchoides species, four of which belonged to the A. besseyi species complex. Most Aphelenchoides genomes have a size of 44.7-47.4 Mb and are among the smallest in clade IV, with the exception of A. fujianensis, which has a size of 143.8 Mb and is one of the largest. Phylogenomic analysis successfully delimited the species complex into A. oryzae and A. pseudobesseyi and revealed a reduction of transposon elements in the last common ancestor of Aphelenchoides. Synteny analyses between reference genomes indicated that three chromosomes inA. besseyi were derived from fission and fusion events. A systematic identification of horizontal gene transfer (HGT) genes across 27 representative nematodes allowed us to identify two major episodes of acquisition corresponding to the last common ancestor of clade IV or major PPNs, respectively. These genes were mostly lost and differentially retained between clades or strains. Most HGT events were acquired from bacteria, followed by fungi, and also from plants; plant HGT was especially prevalent in Bursaphelenchus mucronatus. Our results comprehensively improve the understanding of HGT in nematodes. K E Y W O R D Scomparative genomics, genome reduction, horizontal gene transfer, nematodes, plant parasitism average (a)

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PM 7/39 (2) Aphelenchoides besseyi

Cited by 8 publications

References 17 publications

TheAphelenchoidesgenomes reveal substantial horizontal gene transfers in the last common ancestor of free-living and major plant parasitic nematodes

TheAphelenchoidesgenomes reveal substantial horizontal gene transfers in the last common ancestor of free-living and major plant parasitic nematodes

Aphelenchoides besseyi causing leaf spot on cowpea under field conditions in Brazil

The Aphelenchoides genomes reveal substantial horizontal gene transfers in the last common ancestor of free‐living and major plant‐parasitic nematodes

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