SNPs of CLAVATA receptors in tomato, in the context of root-knot nematode infection

Ejima, Chika; Uwatoko, Takako; Ngan, Bui Thi; Honda, Hiroaki; Shimizu, Noriko; Kiyohara, Shunsuke; Hamasaki, Ryota; Sawa, Shinichiro

doi:10.3725/jjn.41.35

Cited by 6 publications

(1 citation statement)

References 19 publications

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“…For example, plants carrying mutations in a well-characterized CLE receptor, the har-1 locus in Lotus japonicus (Sharma et al 2003 ; Hirakawa et al 2008 ), are hyper-infected by RKN (Lohar and Bird, 2003 ). Independently, it has been found that polymorphisms in the orthologous locus in tomato correlate with root-knot nematode virulence (Ejima et al 2011 ). Collectively, these findings are consistent with the broader hypothesis that root-knot nematodes effect developmental changes necessary for feeding site formation/function, at least in part, by secreting analogues of plant peptide hormones (Bird, 1996 ).…”

Section: Nematode-encoded Plant Peptide Hormones: a Special Class Of mentioning

confidence: 99%

Signatures of adaptation to plant parasitism in nematode genomes

et al. 2014

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SUMMARYPlant-parasitic nematodes cause considerable damage to global agriculture. The ability to parasitize plants is a derived character that appears to have independently emerged several times in the phylum Nematoda. Morphological convergence to feeding style has been observed, but whether this is emergent from molecular convergence is less obvious. To address this, we assess whether genomic signatures can be associated with plant parasitism by nematodes. In this review, we report genomic features and characteristics that appear to be common in plant-parasitic nematodes while absent or rare in animal parasites, predators or free-living species. Candidate horizontal acquisitions of parasitism genes have systematically been found in all plant-parasitic species investigated at the sequence level. Presence of peptides that mimic plant hormones also appears to be a trait of plant-parasitic species. Annotations of the few genomes of plant-parasitic nematodes available to date have revealed a set of apparently species-specific genes on every occasion. Effector genes, important for parasitism are frequently found among those species-specific genes, indicating poor overlap. Overall, nematodes appear to have developed convergent genomic solutions to adapt to plant parasitism.

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Section: Nematode-encoded Plant Peptide Hormones: a Special Class Of mentioning

confidence: 99%

Signatures of adaptation to plant parasitism in nematode genomes

et al. 2014

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Combined releases of soil predatory mites and provisioning of free-living nematodes for the biological control of root-knot nematodes on ‘Micro Tom tomato’

et al. 2020

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Chemotaxis assay of plant-parasitic nematodes on a gel-filled microchannel device

Hida

Nishiyama

Sawa

et al. 2015

Sensors and Actuators B: Chemical

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A c c e p t e d M a n u s c r i p t  On-chip chemotaxis assay method of plant-parasitic nematodes was developed. A protocol to allow the nematodes to move around in the microchannels was achieved. Potassium nitrate stimulated the behavior of plant-parasitic nematode M. incognita. Potassium nitrate caused attraction or repulsion depending on its concentration. Abstract 25 Plant-parasitic nematodes substantially damage a wide variety of agricultural crops 26 worldwide. The chemotaxis of nematodes is a key factor in their parasitic relationship with 27 plants. Therefore, studies on nematode chemotaxis are essential for devising efficient and 28 environmentally friendly management methods. In this paper, we report a new, efficient, and 29 quantitative method to analyze chemotaxis of the plant-parasitic nematode, Meloidogyne 30 incognita, using a gel-filled microchannel device. We quantitatively defined time-dependent 31 concentration gradients of chemicals in the gel-filled microchannel by measuring changes in 32 the fluorescence intensity of fluorescein. We also developed a protocol to allow the 33 nematodes to move around in the microchannels by loading an agarose gel with optimum 34 concentration. Using this novel assay method, we have shown that potassium nitrate (KNO 3 ) 35 stimulates the behavior of M. incognita and can have both repellent and attractant effects, 36 depending on the concentration gradient. This newly developed quantitative chemotaxis assay 37 method can be used to screen and identify new candidate molecules that repel or attract 38 nematodes, and also to analyze the repellent/attractant properties of those molecules towards 39 nematodes. 40 41 42

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SNPs of CLAVATA receptors in tomato, in the context of root-knot nematode infection

Cited by 6 publications

References 19 publications

Signatures of adaptation to plant parasitism in nematode genomes

Signatures of adaptation to plant parasitism in nematode genomes

Combined releases of soil predatory mites and provisioning of free-living nematodes for the biological control of root-knot nematodes on ‘Micro Tom tomato’

Chemotaxis assay of plant-parasitic nematodes on a gel-filled microchannel device

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