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      Description of Xiphinema hangzhouense sp. n. (Nematoda: Longidoridae) from the rhizosphere of Magnolia grandiflora in Hangzhou, Zhejiang Province, China

      1 , 1 , 1 , 2 , 3 , 1 , 4
      Nematology
      Brill

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          Abstract

          Xiphinema hangzhouense sp. n. is described from the rhizosphere of Magnolia grandiflora in Hangzhou, China. The new species is characterised by having a monodelphic reproductive system, slim body, total stylet = 186-192 μm long and vulva located anteriorly at 27.6-31.2% of total body length. The new species has a gonad 400-450 μm long with a simple uterus and no Z-organ. The female tail is elongated conoid with a rounded terminus. The species has four juvenile stages and no male was found. The polytomous identification codes of X. hangzhouense sp. n. are A1, B4, C2, D23, E12, F2, G2, H2, I23, J2, K2, L1. The new species is morphologically similar to X. winotoi. Phylogenetic analyses of the 28S rRNA, ITS rRNA, 18S rRNA and partial COI gene sequences of X. hangzhouense sp. n. and some closely related Xiphinema species revealed that the new taxon clustered with high statistical support with X. radicicola and X. setariae.

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          A Rapid Method for the Transfer of Nematodes From Fixative To Anhydrous Glycerin

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            Molecular and morphological characterisation of two reproductively isolated species with mirror-image anatomy (Nematoda: Cephalobidae)

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              Molecular identification of cyst-forming nematodes (Heteroderidae) from Iran and a phylogeny based on ITS-rDNA sequences

              RFLP and sequences of ITS-rDNA of 45 populations of cyst-forming nematodes collected from different parts of Iran were analysed and identified as representatives of 21 species. Eight enzymes generated RFLP for all studied populations. Comparison of RFLP profiles and sequences of the ITS regions with published data confirmed the presence of Heterodera avenae, H. filipjevi, H. glycines, H. hordecalis, H. latipons, H. schachtii and H. trifolii in Iran. RFLP patterns and ITS sequences for H. elachista, H. turcomanica, H. mothi and C. cacti were obtained for the first time in this study. Heterodera humuli, H. goettingiana, H. fici, H. elachista, H. turcomanica and Cactodera cacti are recorded for the first time in Iran. These results correspond with morphological and morphometric identification of the populations. Several populations were not identified at the species level and are attributed to Heterodera sp.; some of these may correspond to new species. Twenty-one new sequences from Iranian cyst-forming nematodes and 36 known sequences were used for the phylogenetic analyses. The cyst-forming nematodes formed several clades corresponding to their morphological features. Heterodera mothi and H. elachista clustered with high support with other Cyperi group species and H. turcomanica formed a moderately to highly supported clade with the Humuli group.
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                Author and article information

                Journal
                Nematology
                Nematol
                Brill
                1388-5545
                1568-5411
                2018
                2018
                2018
                2018
                : 20
                : 1
                : 67-80
                Affiliations
                [1 ]Laboratory of Plant Nematology, Institute of Biotechnology, College of Agriculture & Biotechnology, Hangzhou 310058, Zhejiang, P.R. China
                [2 ]California Department of Food and Agriculture, Plant Pest Diagnostic Center, 3294 Meadowview Road, Sacramento, CA 95832, USA
                [3 ]Center of Parasitology of A.N. Severtsov Institute of Ecology and Evolution of the Russian Academy of Sciences, Leninskii Prospect 33, Moscow 117071, Russia
                [4 ]Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Hangzhou 310058, P.R. China
                Article
                10.1163/15685411-00003125
                c17cd51c-8c52-4e56-9a6d-3ab85f65a590
                © 2018
                History

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