Plant Nematode Surfaces

2011 ◽  
pp. 115-144 ◽  
Author(s):  
Rosane H. C. Curtis ◽  
John T. Jones ◽  
Keith G. Davies ◽  
Edna Sharon ◽  
Yitzhak Spiegel
Keyword(s):  
Plant Nematode

Plant–nematode interactions

2021 ◽  
Vol 62 ◽  
pp. 102035
Author(s):  
Sebastian Eves-van den Akker
Keyword(s):  
Plant Nematode

Plant–nematode interactions

2003 ◽  
Vol 6 (4) ◽  
pp. 327-333 ◽  
Author(s):  
Valerie M Williamson ◽  
Cynthia A Gleason
Keyword(s):  
Plant Nematode

scholarly journals Transcriptome Analysis of Eggplant Root in Response to Root-Knot Nematode Infection

Pathogens ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 470
Author(s):  
Min Zhang ◽  
Hongyuan Zhang ◽  
Jie Tan ◽  
Shuping Huang ◽  
Xia Chen ◽  
...  
Keyword(s):  
Defense Mechanisms ◽  
Expression Profiles ◽  
Resistance Mechanism ◽  
Solanum Melongena ◽  
Enrichment Analysis ◽  
Nematode Resistance ◽  
Differentially Expressed ◽  
Root Knot Nematode ◽  
Solanum Torvum ◽  
Plant Nematode

Eggplant (Solanum melongena L.), which belongs to the Solanaceae family, is an important vegetable crop. However, its production is severely threatened by root-knot nematodes (RKNs) in many countries. Solanum torvum, a wild relative of eggplant, is employed worldwide as rootstock for eggplant cultivation due to its resistance to soil-borne diseases such as RKNs. In this study, to identify the RKN defense mechanisms, the transcriptomic profiles of eggplant and Solanum torvum were compared. A total of 5360 differentially expressed genes (DEGs) were identified for the response to RKN infection. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis showed that these DEGs are mainly involved in the processes of response to stimulus, protein phosphorylation, hormone signal transduction, and plant-pathogen interaction pathways. Many phytohormone-related genes and transcription factors (MYB, WRKY, and NAC) were differentially expressed at the four time points (ck, 7, 14, and 28 days post-infection). The abscisic acid signaling pathway might be involved in plant-nematode interactions. qRT-PCR validated the expression levels of some of the DEGs in eggplant. These findings demonstrate the nematode-induced expression profiles and provide some insights into the nematode resistance mechanism in eggplant.

scholarly journals The Ditylenchus destructor genome provides new insights into the evolution of plant parasitic nematodes

2016 ◽  
Vol 283 (1835) ◽  
pp. 20160942 ◽  
Author(s):  
Jinshui Zheng ◽  
Donghai Peng ◽  
Ling Chen ◽  
Hualin Liu ◽  
Feng Chen ◽  
...  
Keyword(s):  
Evolutionary History ◽  
Evolutionary Process ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Free Living ◽  
C Elegans ◽  
Free Living Nematode ◽  
Plant Nematode ◽  
Ditylenchus Destructor ◽  
Plant Parasitic

Plant-parasitic nematodes were found in 4 of the 12 clades of phylum Nematoda. These nematodes in different clades may have originated independently from their free-living fungivorous ancestors. However, the exact evolutionary process of these parasites is unclear. Here, we sequenced the genome sequence of a migratory plant nematode, Ditylenchus destructor . We performed comparative genomics among the free-living nematode, Caenorhabditis elegans and all the plant nematodes with genome sequences available. We found that, compared with C. elegans , the core developmental control processes underwent heavy reduction, though most signal transduction pathways were conserved. We also found D. destructor contained more homologies of the key genes in the above processes than the other plant nematodes. We suggest that Ditylenchus spp. may be an intermediate evolutionary history stage from free-living nematodes that feed on fungi to obligate plant-parasitic nematodes. Based on the facts that D. destructor can feed on fungi and has a relatively short life cycle, and that it has similar features to both C. elegans and sedentary plant-parasitic nematodes from clade 12, we propose it as a new model to study the biology, biocontrol of plant nematodes and the interaction between nematodes and plants.

Gene Expression During a Plant-Nematode Interaction

1993 ◽  
pp. 340-343
Author(s):  
G. Harper ◽  
S. J. Gurr ◽  
C. Scollan ◽  
M. P. Glenn ◽  
M. J. McPherson ◽  
...  
Keyword(s):  
Gene Expression ◽  
Plant Nematode

Molecular aspects of plant-nematode interactions.

2009 ◽  
pp. 234-254 ◽  
Author(s):  
G. Gheysen ◽  
J. T. Jones
Keyword(s):  
Plant Nematode ◽  
Molecular Aspects

Epigenetic Mechanisms in Nematode–Plant Interactions

2020 ◽  
Vol 58 (1) ◽  
pp. 119-138 ◽  
Author(s):  
Tarek Hewezi
Keyword(s):  
Dna Methylation ◽  
Effector Proteins ◽  
Plant Responses ◽  
Control Mechanisms ◽  
Epigenetic Mechanisms ◽  
Plant Interactions ◽  
Cyst Nematodes ◽  
Small Noncoding Rnas ◽  
Genome Wide ◽  
Plant Nematode

Epigenetic mechanisms play fundamental roles in regulating numerous biological processes in various developmental and environmental contexts. Three highly interconnected epigenetic control mechanisms, including small noncoding RNAs, DNA methylation, and histone modifications, contribute to the establishment of plant epigenetic profiles. During the past decade, a growing body of experimental work has revealed the intricate, diverse, and dynamic roles that epigenetic modifications play in plant–nematode interactions. In this review, I summarize recent progress regarding the functions of small RNAs in mediating plant responses to infection by cyst and root-knot nematodes, with a focus on the functions of microRNAs. I also recapitulate recent advances in genome-wide DNA methylation analysis and discuss how cyst nematodes induce extensive and dynamic changes in the plant methylome that impact the transcriptional activity of genes and transposable elements. Finally, the potential role of nematode effector proteins in triggering such epigenome changes is discussed.

scholarly journals Grapevine Resistance to the Nematode Xiphinema index Is Durable in Muscadine-Derived Plants Obtained from Hardwood Cuttings but Not from In Vitro

2020 ◽  
Vol 110 (9) ◽  
pp. 1565-1571
Author(s):  
Van Chung Nguyen ◽  
Jean-Pascal Tandonnet ◽  
Samira Khallouk ◽  
Cyril Van Ghelder ◽  
Ulysse Portier ◽  
...  
Keyword(s):  
Natural Resistance ◽  
Parasitic Nematodes ◽  
Promising Alternative ◽  
Nematode Reproduction ◽  
Xiphinema Index ◽  
Plant Nematode ◽  
Hardwood Cutting ◽  
Muscadinia Rotundifolia ◽  
Reproduction Factor

Breeding for varieties carrying natural resistance (R) against plant-parasitic nematodes is a promising alternative to nematicide ban. In perennial crops, the long plant−nematode interaction increases the risk for R breaking and R durability is a real challenge. In grapevine, the nematode Xiphinema index has a high economic impact by transmitting Grapevine fanleaf virus (GFLV) and, to delay GFLV transmission, rootstocks resistant to this vector are being selected, using Muscadinia rotundifolia in particular as an R source. To optimize in fine this strategy, the durability has been studied under controlled conditions in F1 and BC1 muscadine-derived resistant accessions previously obtained from either hardwood-cutting or in vitro propagation. After inoculation with a mix, in equal proportions, of four lines representative of the X. index diversity, multiplication on plants has been monitored 3 to 6 years. The nematode reproduction factor remained lower than 1 in resistant plants obtained from hardwood cuttings while it increased at values far beyond 1 in resistant plants of in vitro origin. Data for nematode numbers per gram of roots mostly paralleled those obtained for the reproduction factor. The effect of the propagation type on resistance over years was also evaluated for the ratio female/juvenile and the frequency of males. Altogether our results illustrate that the muscadine-derived resistance based on hardwood cuttings is durable. By contrast, in resistant and reference accessions obtained from in vitro, our data suggest that the increased nematode multiplication might be mainly due to the modification of root architecture consecutive to this propagation method.

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