Scientific data and background behind the first detection of Meloidogyne enterolobii in Australia

IF 0.6 Q4 PLANT SCIENCES

Australasian Plant Disease Notes Pub Date : 2024-04-23 DOI:10.1007/s13314-024-00539-0

Samantha J. Bond, Daniel C. Huston, Shreya Patel, Mike Hodda, Sonu Yadav, Stanley E. Bellgard

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引用次数: 0

Abstract

The parasitic guava root-knot nematode, Meloidogyne enterolobii Yang and Eisenback (syn. M. mayaguensis), has a wide distribution, host range and is established majorly in tropical-subtropical climates. A routine diagnostic analysis of symptomatic plant roots confirmed the first detection of M. enterolobii in Australia, near Darwin, Northern Territory. The morphology of female perineal patterns, second stage juveniles (J2s) and males were consistent with other reports of this species. The presence of M. enterolobii was first evaluated with a species-specific sequence-characterized amplified region (SCAR) and the intergenic spacer region (IGS2), followed by sequencing of the mitochondrial cytochrome c oxidase I and II (COI & COII) and large subunit ribosomal RNA (28S rRNA) gene regions. The nematode was detected on several important crop-host plants in Australia’s Northern Territory including chilli, tomato, capsicum, cucumber, pumpkin, eggplant, snake bean and sweet potato. The ability of M. enterolobii to colonise a variety of weeds and native Australian plants makes management challenging. The route of introduction of M. enterolobii is presently unknown but is under investigation.

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澳大利亚首次发现肠道黑僵菌的科学数据和背景情况

寄生番石榴根结线虫（Meloidogyne enterolobii Yang and Eisenback，M. mayaguensis）分布广泛，寄主范围大，主要分布在热带-亚热带气候区。对有症状的植物根部进行的常规诊断分析证实，在澳大利亚北领地达尔文附近首次发现了 M. enterolobii。雌虫会阴部形态、第二阶段幼虫（J2s）和雄虫的形态与其他关于该物种的报告一致。首先用物种特异性序列特征扩增区（SCAR）和基因间间隔区（IGS2）评估了肠道线虫的存在，然后对线粒体细胞色素 c 氧化酶 I 和 II（COI & COII）以及大亚基核糖体 RNA（28S rRNA）基因区进行了测序。在澳大利亚北部地区的几种重要作物寄主植物上发现了这种线虫，包括辣椒、番茄、辣椒、黄瓜、南瓜、茄子、蛇豆和甘薯。M. enterolobii 能在多种杂草和澳大利亚本地植物上定植，这给管理带来了挑战。肠孢菌的传入途径目前尚不清楚，但正在调查之中。

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来源期刊

Australasian Plant Disease Notes PLANT SCIENCES-

CiteScore

1.90

自引率

0.00%

发文量

期刊介绍： Australasian Plant Disease Notes is an international journal for publication of short reports from all countries which describe original research that transcends national boundaries. All aspects of plant pathology are covered including new geographical records of diseases or pathogens, new pathogens or pathogen strains, taxonomic papers, quarantine notes, disease management and diagnostic methods. Australasian Plant Disease Notes is a publication of the Australasian Plant Pathology Society.