scholarly journals Nematodes associated with plant growth inhibition in the Wielkopolska region

2012 ◽  
Vol 52 (4) ◽  
pp. 440-446 ◽  
Author(s):  
Grażyna Winiszewska ◽  
Ewa Dmowska ◽  
Aneta Chałańska ◽  
Renata Dobosz ◽  
Franciszek Kornobis ◽  
...  
Keyword(s):  
Plant Growth ◽  
Growth Inhibition ◽  
Rapid Identification ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Innovative Methods ◽  
Academy Of Sciences ◽  
First Time ◽  
Plant Parasitic ◽  
Plant Growth Inhibition

Abstract The list of species of the plant parasitic nematodes presented in this paper (133 species belonging to 14 families) is based on the results of faunistic research conducted in the Wielkopolska region by Polish nematologists up until the year 2010, and the results obtained from the project “Elaboration of Innovative Methods for Rapid Identification of Nematodes Causing Damage to the Economy” managed by the Museum and Institute of Zoology of the Polish Academy of Sciences. During the two years of the project (2010-2011) we found 21 species of nematodes which had not yet been reported in the list of species from the Wielkopolska region. Two of them were reported for the first time in Poland.

scholarly journals The Use of Plant Growth-Promoting Bacteria to Prevent Nematode Damage to Plants

Biology ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 381
Author(s):  
Elisa Gamalero ◽  
Bernard R. Glick
Keyword(s):  
Plant Growth ◽  
Soil Bacteria ◽  
Global Climate ◽  
Parasitic Nematodes ◽  
Plant Growth Promoting Bacteria ◽  
Plant Parasitic Nematodes ◽  
Chemical Agents ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Plant Parasitic

Plant-parasitic nematodes have been estimated to annually cause around US $173 billion in damage to plant crops worldwide. Moreover, with global climate change, it has been suggested that the damage to crops from nematodes is likely to increase in the future. Currently, a variety of potentially dangerous and toxic chemical agents are used to limit the damage to crops by plant-parasitic nematodes. As an alternative to chemicals and a more environmentally friendly means of decreasing nematode damage to plants, researchers have begun to examine the possible use of various soil bacteria, including plant growth-promoting bacteria (PGPB). Here, the current literature on some of the major mechanisms employed by these soil bacteria is examined. It is expected that within the next 5–10 years, as scientists continue to elaborate the mechanisms used by these bacteria, biocontrol soil bacteria will gradually replace the use of chemicals as nematicides.

scholarly journals Five Species of Plant Parasitic Nematodes (Order: Tylenchidae) Affecting Vegetable Crops of Nepal

2016 ◽  
Vol 10 (1) ◽  
pp. 10-14
Author(s):  
Arvind K. Keshari ◽  
Ranjana Gupta
Keyword(s):  
Life Sciences ◽  
Nematode Species ◽  
Parasitic Nematodes ◽  
Kathmandu Valley ◽  
Vegetable Crops ◽  
Plant Parasitic Nematodes ◽  
Morphometric Data ◽  
First Time ◽  
Plant Parasitic

During a survey for plant parasitic nematodes affecting various vegetable crops grown in three hilly districts surrounding Kathmandu Valley, Nepal, five species of order Tylenchidae are reported for the first time from Nepal.The nematode species are Hoplolaimus indicus, Tylenchorhynchus mashhoodi, Helicotylenchus incisus, Microposthonia paraxestis and Hemicriconemoides cocophilus.All the species are illustrated with line diagrams and described with their morphometric data along with localities and host plants.International Journal of Life Sciences 10 (1) : 2016; 10-16

scholarly journals First report of the nematodes Filenchus orientalis and Hemicriconemoides californianus on faba bean in Iran

2016 ◽  
Vol 9 (1) ◽  
pp. 44-50
Author(s):  
S. Azimi ◽  
E. Mahdikhani-Moghadam ◽  
H. Rouhani ◽  
H. Rajabi Memari
Keyword(s):  
Body Length ◽  
Tail Length ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Morphometric Characters ◽  
Lateral Field ◽  
Stylet Length ◽  
First Time ◽  
Plant Parasitic ◽  
Iranian Populations

Summary During a survey in Iran, two known species of plant-parasitic nematodes of the families Tylenchidae and Criconematidae were reported for the first time. The morphological and morphometric characters of Iranian populations of the two recovered species are discussed and illustrated based on morphological and morphometrics data. Iranian population of Filenchus orientalis is characterized by having a 601-755μm body length, stylet length of 9.0-11.3 μm, lateral field with four incisures, tail length of 100-118 μm and males with 15-21 μm long spicules. Hemicriconemoides californianus population is characterized by having a body length of 430-550μm, lip region with two annuli, stylet length of 75-83μm and tail length of 20-28 μm. The morphological and morphometric characters of both species are in agreement with those in original descriptions.

Plant-parasitic nematodes in sugarcane fields in Kitadaito Island (Okinawa), Japan, as a potential sugarcane growth inhibitor

Nematology ◽  
2014 ◽  
Vol 16 (7) ◽  
pp. 807-820 ◽  
Author(s):  
Masanori Kawanobe ◽  
Naoko Miyamaru ◽  
Koichi Yoshida ◽  
Takeshi Kawanaka ◽  
Koki Toyota
Keyword(s):  
Plant Growth ◽  
Growth Inhibitor ◽  
Pot Experiment ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Sugarcane Plant ◽  
Seedling Biomass ◽  
Potential Damage ◽  
The Relationship ◽  
Plant Parasitic

Sugarcane is the main industrial crop in Kitadaito Island (Okinawa), Japan, and the objective of this study was to estimate potential damage to sugarcane by plant-parasitic nematodes (PPN). We selected 15 sugarcane fields with the same cultivar and cropping type in Kitadaito Island. Various kinds of PPN were found in all the fields and the proportion of PPN to the total nematode number was ca 50%, which is relatively high compared to other Japanese upland fields. Lesion (Pratylenchus sp.), stunt (Tylenchorhynchus sp.) and spiral (Helicotylenchus sp.) nematodes were detected at mean densities of 48, 22 and 6 (20 g soil)−1, respectively, from all the fields, and lance (Hoplolaimus sp.) and ring nematodes from half of the fields. The results suggested that sugarcane fields in Kitadaito Island were ubiquitously infested with a variety of PPN with a relatively high abundance. One of the fields was studied further to examine the potential relationship between PPN and sugarcane plant growth. Since no nematicide is registered for sugarcane fields in Japan, an appropriate agrochemical was selected by testing its efficacy against PPN before evaluating the relationship between a PPN community and sugarcane growth. The results of a 10-week pot experiment for sugarcane growth showed that the number of PPN decreased by applying a nematicide fosthiazate, and that sugarcane seedling biomass was significantly greater by 34-63% in soils with applied nematicide than in non-applied control soils, suggesting that PPN may suppress sugarcane growth in Kitadaito Island.

Morphological and molecular characterisation of three species of Paratylenchus Micoletzky, 1922 (Tylenchida: Paratylenchidae) from China, with a first description of the male P. rostrocaudatus

Nematology ◽  
2018 ◽  
Vol 20 (9) ◽  
pp. 837-850 ◽  
Author(s):  
Kan Zhuo ◽  
Xingtong Liu ◽  
Ye Tao ◽  
Honghong Wang ◽  
Borong Lin ◽  
...  
Keyword(s):  
Ribosomal Rna ◽  
Internal Transcribed Spacer ◽  
New Records ◽  
Large Subunit ◽  
Small Subunit ◽  
Parasitic Nematodes ◽  
Molecular Characterisation ◽  
Plant Parasitic Nematodes ◽  
First Time ◽  
Plant Parasitic

Summary In a recent survey of plant-parasitic nematodes associated with forest in China, three species of Paratylenchus, including P. aculentus, P. leptos and P. rostrocaudatus, were found. Paratylenchus leptos and P. rostrocaudatus are new records for China and the male of P. rostrocaudatus is described for the first time. Morphological descriptions, morphometrics and light microscopic photos are provided for these three species. Molecular characterisation of these species using ribosomal RNA (rRNA) D2-D3 expansion domains of large subunit (LSU D2-D3), internal transcribed spacer (ITS) and small subunit (SSU) sequences are also given. Except for the ITS sequence of P. aculentus, other sequences were amplified for the first time. Phylogenetic relationships within the genus Paratylenchus are discussed as inferred from the analyses of LSU D2-D3, ITS and SSU.

scholarly journals The potential of endophytic bacteria isolated from Tagetes sp. to control Meloidogyne spp. infection on tomato plants

2021 ◽  
Vol 22 (6) ◽  
Author(s):  
Abdul Munif ◽  
Muhammad Nursalim ◽  
Ankardiansyah Pandu Pradana
Keyword(s):  
Plant Growth ◽  
Endophytic Bacteria ◽  
Parasitic Nematodes ◽  
Growth Promoter ◽  
Bacterial Isolates ◽  
Plant Parasitic Nematodes ◽  
Tomato Plants ◽  
Meloidogyne Spp ◽  
Plant Parasitic

Abstract. Munif A, Nursalim M, Pradana AP. 2021. The potential of endophytic bacteria isolated from Tagetes sp. to control Meloidogyne spp. infection on tomato plants. Biodiversitas 22: 3229-3236. The root-knot nematode (Meloidogyne spp.) is one of the plant-parasitic nematodes that cause economical loss in the vegetable plantations in the world. The endophytic bacteria may act as a potential biological agent to control the plant-parasitic nematodes. The aim of this study was to explore the endophytic bacteria from Tagetes sp., which had a potential to control Meloidogyne spp. and act as growth promoter for tomato plants. The endophytic bacteria were isolated from the roots and stems of Tagetes sp. and tissues were cultured on the tryptic soy agar (TSA) media. The endophytic bacterial isolates were selected using hypersensitive and blood agar tests to identify their biological safety. The selected endophytic bacteria were also assessed for growth promoter test in the tomato plants. The selected endophytic bacteria were assessed in vitro against the Meloidogyne spp. juvenile 2 and their effectiveness in suppressing the root-knot nematodes on tomato plants in greenhouse. The results showed that total of 184 endophytic bacterial isolates were successfully isolated from the roots and stem of Tagetes sp. In hypersensitive and hemolytic tests, 78 and 36 isolates showed negative responses, respectively. Of the 36 isolates tested, it was found that 14 of them were able to promote the growth of tomato seedlings. In in vitro test, 14 endophytic bacteria showed 73-93% mortality rate of Meloidogyne spp J2. The results at greenhouse showed that 3 bacterial isolates, namely, AL21, AL44, and AL53 suppress the number of root-knot nematodes up to 50-74% and improve tomato plant growth by 32%. These results indicate that endophytic bacteria isolated from Tagetes sp. have the potential to act as biocontrol agents of parasitic nematodes and a plant growth promoter.

scholarly journals The genus Basiria Siddiqi, 1959 (Nematoda: Tylenchidae) from Dezful region, Iran

2021 ◽  
Vol 13 (3) ◽  
pp. 18004-18010
Author(s):  
Manouchehr Hosseinvand ◽  
Ali Eskandari ◽  
Reza Ghaderi
Keyword(s):  
Body Length ◽  
Cephalic Region ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Morphometric Characters ◽  
Khuzestan Province ◽  
Basal Bulb ◽  
Southwestern Iran ◽  
First Time ◽  
Plant Parasitic

A survey was conducted during 2018 and 2019 in order to identify plant-parasitic nematodes of the genus Basiria in Dezful region of Khuzestan province, southwestern Iran.  Nematodes were extracted from the soil and root samples by using tray method, transferred to glycerin and mounted on permanent slides.  Nematodes were identified based on morphological and morphometric characters.  As a result, eight species including B. aberrans, B. duplexa, B. gracilis, B. jirians, B. tumida, B. graminophila, B. ritteri, and B. similis were identified; three species namely B. jirians, B. ritteri, and B. similis are here described and illustrated for the first time from Iran.  B. jirians is characterized by body length 445–535 µm, stylet 9.0–9.2 µm, cephalic region without annuli, DGO 2.0–2.5 µm, median bulb at anterior end of pharynx, basal bulb pyriform, spermatheca non offset and tail elongate conoid with pointed to filiform terminus.  B. ritteri can be characterized by body length 685–747 µm, stylet 10.5–11.5 µm, median bulb located at anterior half of pharynx, basal bulb cylindroid, spermatheca non offset and tail annulated and notched at tip.  B. similis is characterized by body length 644–736 µm, stylet 10.3–11 µm, DGO 8.9–10.5 µm, basal bulb cylindroid and tail clavate.

scholarly journals First report of Xiphinema diffusum from Pakistan

2021 ◽  
Vol 58 (1) ◽  
pp. 92-99
Author(s):  
E. Shokoohi ◽  
K. Nasira ◽  
E. Iqbal ◽  
S. Hussain ◽  
P. W Mashela
Keyword(s):  
18S Rdna ◽  
Morphological Study ◽  
Type Species ◽  
Prunus Persica ◽  
Species Group ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Gilgit Baltistan ◽  
First Time ◽  
Plant Parasitic

SummaryThe population of Xiphinema americanum species group was detected from the soil surronding the roots of peach (Prunus persica) during a survey of plant-parasitic nematodes in Gilgit-Baltistan, Pakistan. From the results of the morphological study, the species was identified as X. diffusum. Morphometrics of X. diffusum generally agree with those of the type species and the topotype specimens. Molecular analysis of 18S rDNA of X. diffusum from Pakistan indicated two nucleotide differences and 99 % similarity with the Chinese (AM086669) and the Australian (AM086685) population of X. diffusum. Phylogenetic analysis of 18S rDNA placed the Pakistanis population close to X. diffusum from China and Australia. This species is reported for the first time from Pakistan

scholarly journals Plant-parasitic nematodes associated with cultivated and wild olive trees in Crete, Greece

2020 ◽  
Vol 13 (1) ◽  
pp. 24-28 ◽  
Author(s):  
A. Archidona-Yuste ◽  
C. Cantalapiedra-Navarrete ◽  
J.E. Palomares-Rius ◽  
P. Castillo ◽  
E.A. Tzortzakakis
Keyword(s):  
Nematode Species ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Wild Olive ◽  
Olive Trees ◽  
First Time ◽  
Plant Parasitic

SummaryThe present study is part of a survey for the identification of plant-parasitic nematodes in the rhizosphere of cultivated and wild olive trees in Crete, Greece. Sixteen species corresponding to 13 genera are added to 20 species belonging to 8 genera, previously reported in the survey. Seven nematode species, Filenchus ditissimus, Filenchus vulgaris, Ogma civellae, Pratylenchoides crenicauda, Psilenchus hilarulus, Tylenchus elegans, and Zygotylenchus guevarai, are recorded for the first time in Greece.

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