Effects of Paecilomyces lilacinus protease and chitinase on the eggshell structures and hatching of Meloidogyne javanica juveniles

2004 ◽  
Vol 31 (3) ◽  
pp. 346-352 ◽  
Author(s):  
Alamgir Khan ◽  
Keith L. Williams ◽  
Helena K.M. Nevalainen
Keyword(s):  
Meloidogyne Javanica ◽  
Paecilomyces Lilacinus

Infection of Meloidogyne javanica by Paecilomyces lilacinus

Nematology ◽  
1999 ◽  
Vol 1 (2) ◽  
pp. 131-139 ◽  
Author(s):  
Rita Holland ◽  
Keith Williams ◽  
Alamgir Khan
Keyword(s):  
Body Wall ◽  
Meloidogyne Javanica ◽  
The Body ◽  
Paecilomyces Lilacinus ◽  
Adult Females ◽  
In Vitro Interaction

AbstractThe in vitro interaction of Paecilomyces lilacinus strain 251 with eggs, 3rd and 4th stage juveniles and adult females of Meloidogyne javanica was studied. Eggs of all stages, including those containing unhatched juveniles, were infected by P. lilacinus. Infection of eggs occurred following flattening of hyphae to the egg surface and formation of appressoria. Sometimes these occurred within extensive networks of hyphae of the egg surface. Hyphae later grew out of the egg to continue growing or form conidiophores. Third and 4th stage juveniles and adult females were readily infected, with hyphae and conidiophores penetrating the body wall. Die Infektion von Meloidogyne javanica durch Paecilomyces lilacinus - Es wurden die in vitro auftretenden Wechselwirkungen zwischen Paecilomyces lilacinus Stamm 251 und den Eiern, J3, J4 und adulten Weibchen von Meloidogyne javanica untersucht. Eier wurden in allen Stadien von P. lilacinus infiziert einschliesslich der ungeschlupfte J2 enthaltenden Eier. Die Infektion erfolgte anschliessend an eine Abflachung von Hyphen auf der Eioberflache und eine Appressorienbildung. Manchmal erschienen diese innerhalb eines ausgedehnten Netzwerkes von Hyphen auf der Eioberflache. Spater wuchsen Hyphen aus dem Ei heraus, wuchsen weiter oder bildeten Konidiophoren. Juvenile des dritten oder vierten Stadiums und adulte Weibchen wurden ohne weiteres befallen, wobei Hyphen und Konidiophoren durch die Korperwand drangen.

scholarly journals Efeitos da temperatura sobre a atividade de fungos no controle biológico de Meloidogyne javanica E M. incognita raça 3

2003 ◽  
Vol 27 (1) ◽  
pp. 91-97 ◽  
Author(s):  
Fábio R. Alves ◽  
Vicente Paulo Campos
Keyword(s):  
Meloidogyne Javanica ◽  
Paecilomyces Lilacinus ◽  
Duddingtonia Flagrans ◽  
Paecilomyces Variotii ◽  
Meloidogyne Spp ◽  
Arthrobotrys Conoides

O efeito de Arthrobotrys conoides, Duddingtonia flagrans, Paecilomyces lilacinus, Paecilomyces variotii, Monacrosporium doedycoides e um isolado de rizobactéria na reprodução e crescimento populacional de Meloidogyne javanica e M. incognita raça 3 em tomateiro Santa Clara, suscetível à Meloidogyne spp., foi estudado em três ambientes distintos: 1) casa-de-vegetação sem controle de temperatura; 2) sala climatizada com temperatura do ar constante a 24ºC; 3) em banho-maria com temperatura do solo mantida em 29-30ºC, colocado na mesma sala climatizada caracterizada anteriormente. Maior crescimento populacional de M. javanica e de M. incognita raça 3 ocorreu em solo aquecido, comparado com aquela em casa-de-vegetação e sala climatizada, e o número de galhas causado por M. javanica e M. incognita raça 3 foi maior em solo aquecido e em sala climatizada do que em casa-de-vegetação. Em solo aquecido e em sala climatizada, A. conoides e a rizobactéria reduziram (P< 0,05) o número de galhas de M. incognita raça 3, comparado com a testemunha. Em solo aquecido, A. conoides reduziu o número de ovos de M. incognita raça 3, comparado com a testemunha. Em casa-de-vegetação, todos os antagonistas reduziram o número de ovos de M. incognita raça 3, comparado com a testemunha. Em casa-de-vegetação, todos os antagonistas reduziram o número de ovos em relação à testemunha.

scholarly journals Relative Efficacy of Some Products Against Meloidogyne Javanica (Treub) Chitwood on Tomato Under Greenhouse Conditions

2021 ◽  
Vol 50 (3) ◽  
pp. 709-712
Author(s):  
Abdallah H Almohithef ◽  
Fahad A Al yahya ◽  
Ahmad S Al hazmi ◽  
Ahmed AM Dawabah ◽  
Hamzeh A Lafi
Keyword(s):  
Meloidogyne Javanica ◽  
Paecilomyces Lilacinus ◽  
Pot Experiment ◽  
Relative Efficacy ◽  
Nematode Reproduction ◽  
Egg Masses ◽  
Goat Manure

A pot experiment was conducted to compare the efficacy of some products i.e., Stanes Bio Nematon®, Soft Guard®, Paecilomyces lilacinus, Trichoderma longibranchiatum, camel and goat manures against Meloidogyne javanica on tomato under greenhouse conditions. Based on nematode reproduction, indices of galls and egg masses, the six materials were grouped into four classes from the relatively highest efficacy of control (goat manure) to the relatively low efficacy of control (P. lilacinus). Bangladesh J. Bot. 50(3): 709-712, 2021 (September)

MORPHOLOGICAL AND BIOCHEMICAL RESPOSES OF COW PEA (CV. PUSA BARSATI) GROWN ON FLY ASH AMENDED SOIL IN PRESENCE AND ABSENCE OF MELOIDOGYNE JAVANICA AND RHIZOBIUM LEGUMINOSARUM

1970 ◽  
Vol 17 ◽  
pp. 17-22 ◽  
Author(s):  
Kamal Singh ◽  
A. A. Khan ◽  
Iram Khan ◽  
Rose Rizvi ◽  
M. Saquib
Keyword(s):  
Fly Ash ◽  
Plant Growth ◽  
Rhizobium Leguminosarum ◽  
Growth Yield ◽  
Maximum Growth ◽  
Meloidogyne Javanica ◽  
Growth And Yield ◽  
Negative Effects ◽  
Positive Effects ◽  
Insignificant Difference

Plant growth, yield, pigment and protein content of cow-pea were increased significantly at lower levels (20 and 40%) of fly ash but reverse was true at higher levels (80 and 100%). Soil amended by 60% fly ash could cause suppression in growth and yield in respect to 40% fly ash treated cow-pea plants but former was found at par with control (fly ash untreated plants). Maximum growth occurred in plants grown in soil amended with 40% fly ash. Nitrogen content of cow-pea was suppressed progressively in increasing levels of fly ash. Moreover,  Rhizobium leguminosarum  influenced the growth and yield positively but Meloidogyne javanica caused opposite effects particularly at 20 and 40% fly ash levels. The positive effects of R. leguminosarum were marked by M. javanica at initial levels. However, at 80 and 100% fly ash levels, the positive and negative effects of R. leguminosarum and/or M. javanica did not appear as insignificant difference persist among such treatments.Key words:  Meloidogyne javanica; Rhizobium leguminosarum; Fly ash; Growth; YieldDOI: 10.3126/eco.v17i0.4098Ecoprint An International Journal of Ecology Vol. 17, 2010 Page: 17-22 Uploaded date: 28 December, 2010  

scholarly journals Mineral composition of beetroot treated with potential elicitors and inoculated with Meloidogyne javanica

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Paula Juliana Grotto Débia ◽  
Beatriz Cervejeira Bolanho ◽  
Claudia Regina Dias-Arieira
Keyword(s):  
Population Density ◽  
Mineral Composition ◽  
Integrated Management ◽  
Meloidogyne Javanica ◽  
Nematode Population ◽  
Root Knot Nematode ◽  
Cu Content ◽  
Manganese Zinc ◽  
Nematode Population Density ◽  
Elicitor Treatments

Abstract Background The root-knot nematode Meloidogyne javanica can infect beetroots, causing extensive damage to this food crop. As chemical and genetic control tactics have shown limited efficacy, new strategies are needed to improve the integrated management of this parasite. This study assessed the influence of potential defence elicitors and M. javanica infection on the mineral composition of beetroot. Plants were treated with acibenzolar-S-methyl (ASM), citrus biomass, or a mannanoligosaccharide-based product (MOS) and inoculated with 1000 eggs and second-stage juveniles of M. javanica. At 60 days after inoculation, beetroot plants were harvested and evaluated for nematode population density, vegetative growth, and mineral content. Results All potential elicitors reduced nematode population density in beetroots (p ≤ 0.10) and improved the vegetative parameters of inoculated plants (p ≤ 0.05), except shoot fresh weight. Some minerals were found to be negatively affected by treatments, particularly calcium, whose levels were consistently lower in treated plants. On the other hand, M. javanica inoculation increased magnesium, iron, manganese, zinc, and copper contents in beetroots. However, the latter mineral (Cu content) of inoculated plants was positively influenced by MOS and ASM. Conclusion Potential elicitor treatments did not improve the mineral composition of beetroot, but were effective in reducing nematode population density. Plants inoculated with M. javanica had higher mineral levels. However, gall formation decreases the commercial value of the crop and might render it unsuitable for commercialisation. M. javanica-infected beetroots may be used for nutrient extraction or sold to food processing industries.

Association of Duddingtonia flagrans with Microorganisms for Management of Meloidogyne javanica and Acquisition of Nutrients in Soybean

2021 ◽  
pp. 104626
Author(s):  
Huarlen Marcio Balbino ◽  
Thalita Suelen Avelar Monteiro ◽  
Raul Rodrigues Coutinho ◽  
Paulo Victor Magalhães Pacheco ◽  
Leandro Grassi de Freitas
Keyword(s):  
Meloidogyne Javanica ◽  
Duddingtonia Flagrans
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