scholarly journals Nematóides associados a plantas invasoras

1976 ◽  
Vol 33 (0) ◽  
pp. 597-615 ◽  
Author(s):  
Antonio Carlos Zem ◽  
Luiz Gonzaga E. Lordello
Keyword(s):  
Meloidogyne Incognita ◽  
Meloidogyne Javanica ◽  
Meloidogyne Arenaria ◽  
Pratylenchus Brachyurus ◽  
Pratylenchus Zeae

O presente trabalho trata de nematóides associados a raízes de 71 plantas invasoras, nas quais revelou-se a presença de 8 gêneros e 18 espécies parasitas. As espécies, pela ordem decrescente de freqüência foram: Helicotylenchus dihystera (46%) ; Meloidogyne javanica (24%) ; Meloidogyne incognita (23%); Macroposthonia ornata (17%); Pratylenchus brachyurus (16%) ; Pratylenchus zeae (14%) ; Xiphinemaseiariae (11%); Xiphinema krugi (10%); Helicotylenchus pseudorobustus (5,6%); Meloidogyne arenaria (4,2%); Helicotylenchus dUiysteroides (4,2%) ; Tylenchorhynchus martini (4,2%) ; Aphelenchoides sp. (2,8%) ; Ditylenchus sp. (2,8%) ; Helicotylerfichus microcephalus (2,8%) ; Xiphinema elongatum (2,8%) ; Helicotylenchus egyptiensis (1,4%) e Meloidogyne coffeicola (1,4%). São feitas considerações sobre as implicações para a agricultura de tão ampla distribuição de nematóides em plantas colonizadoras e gramíneas utilizadas como forrageiras.

scholarly journals Resistance to Meloidogyne incognita, Meloidogyne javanica and Pratylenchus brachyurus in sunflower cultivars adapted to the tropical region of Brazil

2016 ◽  
Vol 41 (5) ◽  
pp. 325-330 ◽  
Author(s):  
Waldir Pereira Dias ◽  
Larissa Alexandra Cardoso Moraes ◽  
Claudio Guilherme Portela de Carvalho ◽  
Maria Cristina Neves de Oliveira ◽  
Idenize Pedrina Orsini ◽  
...  
Keyword(s):  
Meloidogyne Incognita ◽  
Meloidogyne Javanica ◽  
Tropical Region ◽  
Pratylenchus Brachyurus

scholarly journals Antagonistic Effects of Java against Plant Parasitic Nematodes

2018 ◽  
Vol 10 (2) ◽  
pp. 289
Author(s):  
Angelica Miamoto ◽  
Cláudia Regina Dias-Arieira ◽  
Heriksen Higashi Puerari ◽  
Thaísa Muriel Mioranza ◽  
Carolina Bertuzzi Pereira
Keyword(s):  
Meloidogyne Incognita ◽  
Meloidogyne Javanica ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Rotylenchulus Reniformis ◽  
Pratylenchus Brachyurus ◽  
Antagonistic Plants ◽  
Nematode Penetration ◽  
Reproduction Factor ◽  
Plant Parasitic

One of the main phytonematode control alternatives is the use of antagonistic plants in crop rotation or succession systems. Although java legume shows antagonist potential to control Meloidogyne javanica, its reaction to other nematodes was not investigated so far. Thus, the aim of the current study is to assess the penetration and reproduction factor (RF) of M. incognita, Rotylenchulus reniformis and Pratylenchus brachyurus in java, using soybean as control. Plants individually inoculated with 1000 specimens from each nematode were assessed 5, 10, 15, 20, 25 and 30 days after inoculation (DAI) for nematode penetration and development. The RF was assessed under two inoculum levels of each nematode (1000 and 700 specimens) 60 days after inoculation, for M. incognita and R. reniformis; and 80 days after inoculation, for P. brachyurus. Meloidogyne incognita and R. reniformis showed lower penetration and reproduction in java (RF < 1), whereas P. brachyurus showed higher penetration and RF > 1. Thus, the java legume can be considered resistant to M. incognita and R. reniformis, as well as susceptible to P. brachyurus.

scholarly journals Sucessão crambe-soja no manejo de Pratylenchus brachyurus e Meloidogyne javanica

2017 ◽  
Vol 43 (4) ◽  
pp. 316-320
Author(s):  
Carolina Amaral Tavares-Silva ◽  
Claudia Regina Dias-Arieira ◽  
Heriksen Higashi Puerari ◽  
Elizeu Junior da Silva ◽  
Adão Izidoro Junior
Keyword(s):  
Meloidogyne Javanica ◽  
Pratylenchus Brachyurus

RESUMO A implantação do sistema de sucessão de culturas, possibilitando a inserção de espécies vegetais antagonistas ou não hospedeiras à patógenos da soja no período de entressafra, é uma alternativa sustentável em sistemas de cultivo. Neste contexto, recomenda-se cuidado na seleção de plantas de sucessão que não possibilitem a multiplicação de nematoides, especialmente, os parasitas da soja, Pratylenchus brachyurus e Meloidogyne javanica. Desta forma, objetivou-se avaliar o potencial de redução da população de P. brachyurus e M. javanica, pelo cultivo de espécies utilizadas em sucessão com a soja, comparando-as com o crambe. Sementes de soja cv. 5909RR Nidera foram semeadas em vasos com capacidade para 18 L e após 15 dias foram inoculadas, em experimentos separados, com 1000 espécimes de P. brachyurus e 3000 ovos e eventuais juvenis de segundo estádio (J2) de M. javanica. Aos 60 dias da inoculação, a parte aérea das plantas foi descartada e as culturas de sucessão (milho cv. IPR114, feijão cv. IPR Tangará, nabo forrageiro, aveia-preta cv. IAPAR 61 e crambe cv. MS Brilhante) foram semeadas. As plantas foram cultivadas por 90 dias, quando a parte aérea foi cortada, semeando-se novamente a soja, a qual foi cultivada por mais 60 dias. No final desse período, as plantas foram retiradas dos vasos para determinação de parâmetros vegetativos e nematológicos na soja. A introdução do crambe no sistema de sucessão de culturas reduziu a população de P. brachyurus. A reprodução de M. javanica foi menor na sucessão com o crambe quando comparado com os demais sistemas, entretanto o mesmo apresentou elevado fator de reprodução.

scholarly journals KEEFEKTIFAN BAKTERI ENDOFIT UNTUK MENGENDALIKAN NEMATODA Pratylenchus brachyurus PADA TANAMAN NILAM

2020 ◽  
Vol 17 (1) ◽  
pp. 6
Author(s):  
RITA HARNI ◽  
SUPRAMANA SUPRAMANA ◽  
MEITY S. SINAGA ◽  
GIYANTO GIYANTO ◽  
SUPRIADI SUPRIADI
Keyword(s):  
Meloidogyne Incognita ◽  
Endophytic Bacteria ◽  
Penetration Rate ◽  
Achromobacter Xylosoxidans ◽  
Radopholus Similis ◽  
Fresh Weight ◽  
Greenhouse Condition ◽  
Pogostemon Cablin ◽  
Pratylenchus Brachyurus ◽  
Uninoculated Control

<p>ABSTRAK</p><p>Penggunaan bakteri endofit sebagai agen pengendalian nematodaparasit seperti Meloidogyne incognita pada kapas dan tomat, Globoderasp. pada kentang dan Radopholus similis pada pisang telah banyak ditelitipada beberapa jenis tanaman. Penelitian bertujuan untuk menganalisiskeefektifan  beberapa  bakteri  endofit terhadap  perkembangan  P.brachyurus, penetrasi, reproduksi, dan kerusakan yang diakibatkannyapada tanaman nilam. Penelitian dilakukan di Laboratorium dan Rumahkaca Hama dan Penyakit Balai Penelitian Tanaman Obat dan AromatikBogor, dari bulan Maret sampai Agustus 2008. Penelitian menggunakanrancangan acak lengkap (RAL) 6 perlakuan dengan 7 ulangan. Lima isolatbakteri endofit, yaitu Achromobacter xylosoxidans TT2, Alcaligenesfaecalis NJ16, Pseudomonas putida EH11, Bacillus cereus MSK, danBacillus subtilis NJ57, diaplikasikan pada setek tanaman nilam denganmetode perendaman akar. Seminggu setelah tanam, nilam diinokulasidengan 500 ekor P. brachyurus. Pengamatan dilakukan terhadap penetrasi,reproduksi, populasi nematoda, dan pertumbuhan nilam. Hasil penelitianmenunjukkan bahwa bakteri endofit A. xylosoxidans TT2, A. faecalisNJ16, P. putida EH11, B. cereus MSK, dan B. subtilis NJ57 dapatmenekan penetrasi dan populasi P. brachyurus ke dalam akar sebesar54,8-70,6% dengan faktor reproduksi (pf/pi) 0,61-0,94 dan meningkatkanpertumbuhan tanaman nilam sebesar 37,86-84,71%.</p><p>Kata kunci: Pogostemon cablin, bakteri endofit, keefektifan, nematoda,Pratylenchus brachyurus, pengendalian biologi</p><p>ABSTRACT</p><p>Effectiveness  of  endophytic  bacteria  to  controlPratylenchus brachyurus nematode on patchouli</p><p>The use of endophytic bacteria as biocontrol agents for nematodes,such as Meloidogyne incognita on cotton and tomatoes, Globodera sp. onpotatoes and Radopholus similis on bananas has been widely studied inseveral crops. The aim of the study was to investigate the effectiveness ofsome endophytic bacteria to control P. brachyurus, penetration,reproduction, and plant fresh weight production. Five isolates, namely A.xylosoxidans TT2, A. faecalis NJ16, P. putida EH11, B. cereus MSK, andB. subtilis NJ57 were applied to the patchouli cutting roots by soakingmethod before planting. A week after planting, the plants were inoculatedwith 500 juveniles and adults of P. brachyurus. Observations were doneon penetration and reproduction rates of the nematode, and growth ofpatchouli plant. Under greenhouse condition, A. xylosoxidans TT2, A.faecalis NJ16, P. putida EH11, B. cereus MSK, and B. subtilis NJ57reduced penetration rate of P. brachyurus into the patchouli roots by 54.8to 70.6% and suppressed nematode population with pf/pi value 0.61 to0.94. Growth of inoculated plants increased by 37.86 to 84.71% comparedwith uninoculated (control) ones.</p><p>Key words: Pogostemon cablin, endophytic bacteria, effectivenessnematode, Pratylenchus brachyurus, biological control</p>

scholarly journals Biological Control Associated With Plant Nutrition for Meloidogyne javanica and Pratylenchus brachyurus Management in Soybean

2019 ◽  
Vol 12 (1) ◽  
pp. 149
Author(s):  
Ana Paula Mendes Lopes ◽  
Bruna Orlandini Toninato ◽  
Mayra Renata Cruz Soares ◽  
Cláudia Regina Dias-Arieira
Keyword(s):  
Biological Control ◽  
Plant Nutrition ◽  
Aerial Part ◽  
Integrated Management ◽  
Meloidogyne Javanica ◽  
Control Methods ◽  
Pratylenchus Brachyurus ◽  
Low Efficiency ◽  
To Receive ◽  
Nematode Mortality

Meloidogyne javanica and Pratylenchus brachyurus stand out among the main nematodes in soybean crops. Research on integrated management are often conducted, due to the low efficiency of the main control methods when they are applied alone. Thus, the aim of the present study was to assess the potential of biological control and plant nutrition products to control these nematodes in soybean. The effect of each product alone on nematode hatching and mortality was also assessed. A greenhouse experiment was also carried out, evaluating five doses of the product for biological control based on Bacillus and Trichoderma, with and without the presence of the product for nutrition, inoculated with 2000 eggs and juveniles for the gall nematode or 1000 specimens for the nematode lesions. After 30 days of multiplication, the aerial part was removed and the soil was revolved to receive the new sowing of the soybean with the respective treatments mentioned above. After 60 days, the experiments were evaluated for nematological parameters. Both products reduced hatching and increased nematode mortality. Treatments with biological control were efficient in reducing M. javanica and P. brachyurus, mainly when applied at doses close to 5 and 8 kg ha-1, respectively. The nutrition product negatively influences the biological control.

scholarly journals Τhe Nematicidal Potential of Bioactive Streptomyces Strains Isolated from Greek Rhizosphere Soils Tested on Arabidopsis Plants of Varying Susceptibility to Meloidogyne spp.

Plants ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 699
Author(s):  
Christianna Meidani ◽  
Alexandros Savvidis ◽  
Evaggelia Lampropoulou ◽  
Aggeliki Sagia ◽  
Efstathios Katsifas ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Arabidopsis Thaliana ◽  
Meloidogyne Incognita ◽  
Meloidogyne Javanica ◽  
Wild Type ◽  
Biological Cycle ◽  
Second Stage ◽  
Cycle Arrest ◽  
Meloidogyne Spp ◽  
Culture Supernatants

A total of 461 indigenous Streptomycetes strains recovered from various Greek rhizosphere habitats were tested for their bioactivity. All isolates were examined for their ability to suppress the growth of 12 specific target microorganisms. Twenty-six were found to exert antimicrobial activity and were screened for potential nematicidal action. S. monomycini ATHUBA 220, S. colombiensis ATHUBA 438, S. colombiensis ATHUBA 431, and S. youssoufensis ATHUBA 546 were proved to have a nematicidal effect and thus were further sequenced. Batch culture supernatants and solvent extracts were assessed for paralysis on Meloidogyne javanica and Meloidogyne incognita second-stage juveniles (J2). The solvent extracts of S. monomycini ATHUBA 220 and S. colombiensis ATHUBA 438 had the highest paralysis rates, so these Streptomycetes strains were further on tested for nematodes’ biological cycle arrest on two Arabidopsis thaliana plants; the wild type (Col-0) and the katanin mutant fra2, which is susceptible to M. incognita. Interestingly, S. monomycini ATHUBA 220 and S. colombiensis ATHUBA 438 were able to negatively affect the M. incognita biological cycle in Col-0 and fra2 respectively, and increased growth in Col-0 upon M. incognita infection. However, they were ineffective against M. javanica. Fra2 plants were also proved susceptible to M. javanica infestation, with a reduced growth upon treatments with the Streptomyces strains. The nematicidal action and the plant-growth modulating abilities of the selected Streptomycetes strains are discussed.

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