Hatch, survival and sensory perception.

Masler, Edward P.; Perry, R. N.

doi:10.1079/9781786390837.0044

Cited by 18 publications

(49 citation statements)

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“…This is to ensure that hatching occurs only in the vicinity of its host. Most cyst nematode species with a wider host range, like H. schachtii , have a lower osmotic pressure due to low trehalose concentration enabling eggs to readily hatch in water without the need for host cues 16,18 …”

Section: Hatching and Host‐seeking Processmentioning

confidence: 99%

“…The amphidal canal houses the neuronal dendrites that are bathed in secretions from the socket cells that may facilitate signal transduction. These secretions contain proteins that may play an important role in chemoreception 18,22 . Chemical stimuli come into contact with these secretions and reach the receptors through diffusion.…”

Section: Hatching and Host‐seeking Processmentioning

confidence: 99%

“…Soil texture, moisture, carbon dioxide and oxygen contents can also influence cyst hatching and J2 host‐seeking behavior. For example, maximum cyst nematodes hatching generally occurs when the soil moisture content is at field capacity 18 . For H. glycines , optimal J2 hatching occurs at 25% soil moisture content but this declines by about 75% following a 10% decrease in moisture content 30 .…”

Section: Abiotic Factors Influencing Hatching and Host‐seekingmentioning

confidence: 99%

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Cyst nematode bio‐communication with plants: implications for novel management approaches

Ochola

Coyne

Cortada

et al. 2020

Pest Management Science

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Bio‐communication occurs when living organisms interact with each other, facilitated by the exchange of signals including visual, auditory, tactile and chemical. The most common form of bio‐communication between organisms is mediated by chemical signals, commonly referred to as ‘semiochemicals’, and it involves an emitter releasing the chemical signal that is detected by a receiver leading to a phenotypic response in the latter organism. The quality and quantity of the chemical signal released may be influenced by abiotic and biotic factors. Bio‐communication has been reported to occur in both above‐ and below‐ground interactions and it can be exploited for the management of pests, such as cyst nematodes, which are pervasive soil‐borne pests that cause significant crop production losses worldwide. Cyst nematode hatching and successful infection of hosts are biological processes that are largely influenced by semiochemicals including hatching stimulators, hatching inhibitors, attractants and repellents. These semiochemicals can be used to disrupt interactions between host plants and cyst nematodes. Advances in RNAi techniques such as host‐induced gene silencing to interfere with cyst nematode hatching and host location can also be exploited for development of synthetic resistant host cultivars. © 2020 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Section: Hatching and Host‐seeking Processmentioning

confidence: 99%

Section: Hatching and Host‐seeking Processmentioning

confidence: 99%

Section: Abiotic Factors Influencing Hatching and Host‐seekingmentioning

confidence: 99%

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Cyst nematode bio‐communication with plants: implications for novel management approaches

Ochola

Coyne

Cortada

et al. 2020

Pest Management Science

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“…In our assay, some of these factors were controlled to favor the hatching. Indeed, temperature and moisture were maintained in a range close to the optimum described in the literature (see Masler and Perry, 2018 ; for a review): 14–18°C for temperatures and 80% of field capacity for moisture, and PRE was produced during 3 weeks after potato germination.…”

Section: Discussionmentioning

confidence: 98%

“…For instance, Globodera pallida , one of the most harmful pathogens of potato ( Solanum tuberosum ) and quarantine organism worldwide, is very specific to the Solanaceae family. Indeed, this species hatches only after the perception of HFs, some of which have been identified in potato root exudates (PREs), such as the solanoeclepin A ( Masler and Perry, 2018 ; Sikder and Vestergård, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Hatching of Globodera pallida Induced by Root Exudates Is Not Influenced by Soil Microbiota Composition

et al. 2020

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Plant-parasitic nematodes are among the most harmful pests of cultivated crops causing important economic losses. The ban of chemical nematicides requires the development of alternative agroecological approaches to protect crops against nematodes. For cyst nematodes, egg hatching is stimulated by host plant root exudates. Inducing “suicide hatching” of nematode second-stage juveniles (J2), using root exudates in the absence of the host plant, may constitute an effective and innovative biocontrol method to control cyst nematodes. However, before considering the development of this approach, understanding the effect of soil biotic component on cyst nematode hatching by root exudates is a major issue. The effectiveness of this approach could be modulated by other soil organisms consuming root exudates for growth as soil microbiota, and this must be evaluated. To do that, four different native agricultural soils were selected based on their physicochemical properties and their microbiota composition were characterized by rDNA metabarcoding. To disentangle the effect of microbiota from that of soil on hatching, four recolonized artificial soils were obtained by inoculating a common sterile soil matrix with the microbiota proceeding from each agricultural soil. Each soil was then inoculated with cysts of the potato cyst nematode, Globodera pallida , and low or high doses of potato root exudates (PREs) were applied. After 40 days, viable J2 remaining in cysts were counted to determine the efficiency of root exudates to stimulate hatching in different soils. Results showed that (i) when physicochemical and microbiota compositions varied among native soils, the hatching rates remained very high albeit small differences were measured and no dose effect was detected and (ii) when only microbiota composition varied among recolonized soils, the hatching rates were also high at the highest dose of PREs, but a strong dose effect was highlighted. This study shows that abiotic and biotic factors may not compromise the development of methods based on suicide hatching of cyst nematodes, using root exudates, molecules inducing J2 hatch, or trap crops.

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Breeding for potato cyst nematode resistance in Solanum tuberosum

Spychalla,

De Jong

2024

Crop Science

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Two species of potato cyst nematodes (PCNs), Globodera rostochiensis (Woll.) and Globodera pallida (Stone), threaten potato (Solanum tuberosum L.) production worldwide. PCNs are remarkably persistent in soil and can reduce potato yield significantly. The most sustainable approach to PCN control is deploying resistant cultivars. This review focuses on the knowledge needed to conduct a successful PCN resistance breeding program, including identifying resistance sources in wild species, introgressing them into cultivated potato, and sifting through clones to identify a marketable potato.

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Hatch, survival and sensory perception.

Abstract: This chapter focuses on the hatching, survival and sensory perception of cyst nematodes and the links among them. The associated interfaces between the cyst nematodes and their hosts are also discussed.

Cited by 18 publications

References 0 publications

Cyst nematode bio‐communication with plants: implications for novel management approaches

Cyst nematode bio‐communication with plants: implications for novel management approaches

Hatching of Globodera pallida Induced by Root Exudates Is Not Influenced by Soil Microbiota Composition

Breeding for potato cyst nematode resistance in Solanum tuberosum

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