Dormancy and hatching of nematode eggs

Perry, R. N.

doi:10.1016/0169-4758(89)90299-8

Cited by 85 publications

(45 citation statements)

References 31 publications

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“…Trehalose plays an important role in the hatching sequence of some plant parasitic nematodes. The trehalose content of perivitelline fluid influences hatching and is important for the survival of dormant, unhatched juveniles (Perry, 1989). However, the trehalose content in the white cysts was significantly lower than that of brown cysts in the present study, and no J2 emerged from the white under favorable conditions in the laboratory (Jing et al, 2014).…”

Section: Discussioncontrasting

confidence: 48%

Comparison of Biochemical Components within White and Brown Cysts in the Cereal Cyst Nematode Heterodera avenae

Mo¹,

Long²,

Qiu³

et al. 2017

IJAB

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Several biochemical components of white and brown cysts in the cereal cyst nematode were measured and compared in our study. These components included carbohydrate, glycerol, soluble protein, esterase and trehalase. Results showed that the total carbohydrate, glycogen and soluble protein contents were higher in the white cysts than in the brown cyst, whereas the glycerol content was lower in the white cysts than in the brown cysts. Trehalase activity was lower in the white cysts than in the brown cysts, whereas esterase activity was higher in the white cysts than in the brown cysts. Only one esterase band, EST0.20, in both types of cysts was observed in the esterase isoenzyme pattern; the esterase in the white cysts showed a darker band and exhibited more activity than the esterase in the brown cysts. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis analysis indicated that the protein pattern in the white cysts had darker and more protein bands of high molecular weight (>44.3 kDa) than that in the brown cysts. For protein of lower molecular weight (≤44.3 kDa), the pattern bands in the brown cysts were remarkably darker than those in the white cysts. The amount of protein in the white cysts differed from that in the brown cysts. The biochemical components signals and response may provide useful information for exploring nematode physiology.

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Section: Discussioncontrasting

confidence: 48%

Comparison of Biochemical Components within White and Brown Cysts in the Cereal Cyst Nematode Heterodera avenae

Mo¹,

Long²,

Qiu³

et al. 2017

IJAB

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“…This stylet is used to puncture plant cells in order to introduce secretions and withdraw food, as well as being used as a cutting tool during hatching and invasion (Perry 1989;Von Mende 1997). Several previous studies have used various lectins to examine the carbohydrates present in plant parasitic nematodes, and some of these have utilised lectins such as wheat germ agglutinin that can be used as indicators of chitin presence.…”

Section: Discussionmentioning

confidence: 99%

Nematode chitin synthases: gene structure, expression and function in Caenorhabditis elegans and the plant parasitic nematode Meloidogyne artiellia

Veronico¹,

Lj²,

Jt³

et al. 2001

Mol Gen Genomics

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Although the presence of chitin in nematodes is well documented little is known about its synthesis in this phyletic group. The recently completed genome sequence of Caenorhabditis elegans predicts two sequences with homology to chitin synthases (chitin-UDP acetyl-glucosaminyl transferase; EC 2.4.1.16). We show that these genes are differentially expressed in a pattern that may reflect different functional roles. One gene is expressed predominantly in the adult hermaphrodite (the main egg-producing stage in the nematode) and later larval stages, which is consistent with a role in production of chitin for the eggshell. The other gene, however, is expressed in the cells that form the pharynx, and only in the period directly preceding a moult. These data suggest that the product of this gene is involved in synthesis of the feeding apparatus, which is replaced during each moult. We have also isolated a full-length genomic sequence of a chitin synthase orthologue from the plant parasitic nematode Meloidogyne artiellia. The single gene present in M. artiellia shows an expression pattern that is consistent with a role for the protein in production of the eggshell.

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“…These data indicate that J2 were 'prepared' to hatch at the moment that cysts were transferred from the test solutions to the host root diffusate. The sequence of events in the hatching process of G. rostochiensis is initiated by a permeability change in the lipid layer caused by hatching factors in host root diffusates (Perry, 1989). However, root diffusates have a 'bimodal action' (Perry, 2002), whereby as well as changing eggshell permeability they also directly affect the metabolism and activity of the unhatched J2.…”

Section: Discussionmentioning

confidence: 99%

Effect of the green manures Sinapis alba, Brassica napus and Raphanus sativus on hatching of Globodera rostochiensis

Valdes¹,

Perry

Viaene³

et al. 2011

Nematol

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The potato cyst nematode, Globodera rostochiensis, is a quarantine organism. Environmentally benign controlmeasures for this economically important pest are needed. Green manures, in particular plants from the Brassicaceae, suppress some plant-parasitic nematodes and have potential as control agents. This study examined if growing and incorporating cover crops from the Brassicaceae family influenced hatching of G. rostochiensis. The effect of root diffusates and plant extracts, as well as soil incorporation of plant material from three commonly used species of green manures, was studied in in vitro bioassays and pot tests. The results showed that brassica diffusates and plant extracts were not nematicidal. In addition, although they did not cause hatch by themselves, pretreatment with these solutions enhanced subsequent hatch in host root diffusates. The results are discussed in the context of the hatching response of G. rostochiensis and the likely influence on field usage of these green manures

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Dormancy and hatching of nematode eggs

Cited by 85 publications

References 31 publications

Comparison of Biochemical Components within White and Brown Cysts in the Cereal Cyst Nematode Heterodera avenae

Comparison of Biochemical Components within White and Brown Cysts in the Cereal Cyst Nematode Heterodera avenae

Nematode chitin synthases: gene structure, expression and function in Caenorhabditis elegans and the plant parasitic nematode Meloidogyne artiellia

Effect of the green manures <i>Sinapis alba</i>, <i>Brassica napus</i> and <i>Raphanus sativus</i> on hatching of <i>Globodera rostochiensis</i>

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