Emerging molecular knowledge on <i>Radopholus similis</i>, an important nematode pest of banana

Haegeman, Annelies; Elsen, Annemie; Waele, Dirk De; Gheysen, Godelieve

doi:10.1111/j.1364-3703.2010.00614.x

Cited by 43 publications

(32 citation statements)

References 63 publications

(121 reference statements)

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“…Attraction by pheromones has been explored in some PPN such as cyst nematodes and Radopholus similis (Cobb, 1893) Thorne, 1949, and changes in such compounds could provoke, over short distances, a rejection of mate se lection and hence the eventual reproductive isolation and evolution of two sibling species (Green & Plumb, 1970;Huettel et al, 1982). However, in the case of Radopho lus, the banana and citrus races, which had been recog nised at species level, were not reproductively isolated and were morphologically and molecularly similar, the re cently proposed R. citrophilus later being correctly con sidered as a junior synonym of/?, similis, the older name (Valette et al, 1998;Kaplan et al, 2000;Haegeman et al, 2010).…”

Section: Cryptic and Sibling Species Concepts Causes And Examples Ofmentioning

confidence: 97%

Cryptic species in plant-parasitic nematodes

Palomares-Rius

Cantalapiedra‐Navarrete

Castillo

2014

Nematol

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This paper summarises the current knowledge concerning cryptic species of plant-parasitic nematode and briefly reviews the different methods available for their detection and characterisation. Cryptic species represent an important component of biodiversity, such speciation being common among plant-parasitic nematodes and occurring in diverse groups with different life history traits, including the spiral, virus vector, root-lesion and false root-knot nematodes. Cryptic species are important for a number of reasons, including food security, quarantine, non-chemical management technologies and species conservation, and should not be ignored. The magnitude of the phenomenon is largely unknown, but the available data on plant-parasitic nematodes demonstrate that reliance on morphology alone for species delimitation seriously underestimates the total number of taxa. Future research should focus on appropriately designed case studies using combined approaches, including large-scale, whole sample analyses by next-generation sequencing or proteomics in order to be able to answer the many questions that still remain.

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Section: Cryptic and Sibling Species Concepts Causes And Examples Ofmentioning

confidence: 97%

Cryptic species in plant-parasitic nematodes

Palomares-Rius

Cantalapiedra‐Navarrete

Castillo

2014

Nematol

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“…(Luc, 1987) and its host range includes more than 250 plant species (Haegeman et al, 2010). It is on the list of quarantined pests in many countries of the world (Haegeman et al, 2010). It has demolished the black pepper cultivation of Bangka island of Indonesia in the early1930s (MacGowan, 1982; Ramana and Eapen, 2000; Thorne, 1949) and meanwhile, assumed a status of serious plant parasite of ornamental plants (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…It is commonly called as burrowing nematode and the disease induced by them on banana known by different names like 'black head disease', 'banana decline', 'root rot' or 'rhizome rot' etc. (Luc, 1987) and its host range includes more than 250 plant species (Haegeman et al, 2010). It is on the list of quarantined pests in many countries of the world (Haegeman et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Intra-specific morphological and morphometric variability of Radopholus similis (Cobb, 1893) Thorne, 1949

Roy

Sarkar

et al. 2018

JANS

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Abstract:All the root inhabiting migratory endoparasitic nematode populations of Radopholus procured from banana crop of Vellayani, Thiruvananthapuram, Kerala were identified as Radopholus similis. Heat killed females were straight to slightly ventrally curved posteriorly. Female's head was low, rounded, continuous or slightly setoff with the body contour.Females were 500-660 µm long and were comparatively longer than males. Males had button shaped head set off by a constriction; female with three to five lip annuli, four crenate and areolated lateral incisures, stylet 14-18 µm long with rounded knobs, vulva postequatorial (58%), sometimes with slight protuberant lips, ovary paired and equally developed, oesophageal gland overlapped the intestine dorsally, tail elongate-conoid with narrowly rounded terminus. The stylet length (µm), width of stylet knob (µm), distance of excretory pore from anterior end (µm), distance from head to basal bulb (µm), lateral field structure, shape of stylet knob, head region, position of phasmid, tail shape with its terminus, morphometric values like m%, o% and v% and a, c and c´ ratios of females were stable (CV<12%) features. There is an existence of intra-specific variability in the morphological and morphometric features of R. similis. The main morphological diversity was observed with P% of male and female, b ratio of female and stylet length, distance of DEGO from stylet base, o% and T% of male. All the root inhabiting migratory endoparasitic nematode populations of Radopholus Thorne, 1949 procured from banana of Vellayani, Thiruvananthapuram, Kerala were identified as Radopholus similis (Cobb, 1893) Thorne, 1949. A high degree of intra-specific morphometric variability was observed with regard to the total body length (µm), body width (µm), stylet length (µm), distance of dosrsal oesophageal gland orifice (DEGO) from stylet base (µm), number of lip annuli, lip height (µm), distance from head to basal bulb (µm), distance of anus from anterior end (µm), tail length (µm), anal body width (µm), distance of phasmid from tail terminus (µm), number of lateral lines, width of lateral field (µm), b ratio and P % among females of R. similis. Morphometric features like m%, o% and v% of females of R. similis showed least variability. These can be considered as the stable morphometric characters for discrimination of females of R. similis. Ratios like 'a' and 'c' of females of R. similis were found moderately variable. The morphometric feature and of male i.e. distance from head to basal bulb (µm) was found least variable; while number of lip annuli and spicule length (µm) were moderately variable.

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“…Nematoda R. similis merupakan endoparasit berpindah (migratory endoparasites), dan mampu menyelesaikan seluruh siklus hidupnya di dalam jaringan tanaman (Haegeman et al 2010). Umumnya R. similis melakukan penetrasi pada bagian ujung akar, namun demikian nematoda ini juga dapat menyerang pada seluruh bagian akar.…”

Section: Pendahuluanunclassified

Seduhan daun dan buah jarak pagar (Jatropha curcas L.) untuk mengendalikan nematoda perongga akar Radopholus similis secara in vitro

Yousif¹,

Pradana²,

Oktafiyanto³

et al. 2017

Preprint

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Radopholus similis is a nematode that infects many plantation crops. Infected plant roots by nematodes will show necrosis symptoms, then rot due to infection of secondary pathogens. Control of R. similis that is effective, environmentally friendly, and easy to be performed by the farmers is the key to success in reducing losses by this nematode. Extract of physic nut has been recognized to be effective in controlling some important pests, but there is currently no reports of its effectiveness in controlling R. similis. This study aimed to determine the effectiveness of leaves and fruit steeping of physic nut for in vitro control of R. similis. A total of 1:10 (w/v) leaves and fruit of physic nut were steepped, then filtered by a 500 mesh sieve. Steeping was then dripped into a suspension containing 40 R. similis. Twenty-four hours after treatment, the number of dead nematodes was observed. The leaves steeping of physic nut could kill up to 70% of R. similis. Mortality of R. similis treated with steeping of physic nut seeds reached 76.25%. Both steeping applications did not cause damage to the body of nematodes, thus it is presumably that the mortality was due to toxic compounds.

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Emerging molecular knowledge on Radopholus similis, an important nematode pest of banana

Abstract: Major problem in banana plantations in tropical regions worldwide.

Cited by 43 publications

References 63 publications

Cryptic species in plant-parasitic nematodes

Cryptic species in plant-parasitic nematodes

Intra-specific morphological and morphometric variability of Radopholus similis (Cobb, 1893) Thorne, 1949

Seduhan daun dan buah jarak pagar (Jatropha curcas L.) untuk mengendalikan nematoda perongga akar Radopholus similis secara in vitro

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