Scholarlink

<p>Melon thrips (<i>Thrips palmi</i>), a regulatory quarantine pest, has infiltrated various countries and geographies within a century, severely destroying crops from over 30 plant families. It became a global concern because of its opportunistic character, ability to disseminate tospoviruses, and consequences on horticultural yield. <i>T. palmi</i> is a persistent threat to vegetable farming in South Indian states, particularly Tamil Nadu, where tropical conditions dominate across thousands of km. The current investigation attempted to evaluate <i>T. palmi</i> populations from the vegetable environment using morphological and molecular characteristics and their analysis. The first two principal components accounted for 42.55% of total variances in the morphological characteristics in <i>T. palmi</i> when using Principal Component Analysis (PCA) to correlate morphological features with modifications in the species harboring those studied geographical regions. The species was validated by mtCOI analysis, and the 13 accession numbers generated (OP326151, OP080327, OP850036–OP850040, OP315663–OP315667, and OQ29924) were submitted to NCBI. A phylogenetic tree was built utilizing 397 global sequences, and dendrogram analyses revealed that the sequences were divided into 135 subclades, with a single evolutionary branch receiving significant bootstrap support. The presence of 28 haplotypes was found in <i>T. palmi</i>’s worldwide genetic variability as determined by haplotype diversity with two prevailing haplotypes Hap_2 and Hap_4 consisting most of the world sequences. Sequences retrieved from this study were grouped with Hap_2. The results found that haplotype (gene) diversity (Hd), variance, and standard deviation of haplotype diversity were 0.662, 0.00023, and 0.015 for the species worldwide, showing little genetic diversity across geography.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Morphometric and molecular analysis of Thrips palmi Karny (Thysanoptera: Thripidae) thronging the horticultural ecosystem reveals population expansion with low genetic diversity

  • 期刊论文

  • 发表日期：

    2025年2月26日

查看全文
  • Aishwarya Palanisamy,
  • Murugan Marimuthu,
  • Chitra Narayanasami,
  • Balasubramani Venkatasamy,
  • Karthikeyan Gandhi,
  • Pugalendhi Lakshmanan

摘要

Melon thrips (Thrips palmi), a regulatory quarantine pest, has infiltrated various countries and geographies within a century, severely destroying crops from over 30 plant families. It became a global concern because of its opportunistic character, ability to disseminate tospoviruses, and consequences on horticultural yield. T. palmi is a persistent threat to vegetable farming in South Indian states, particularly Tamil Nadu, where tropical conditions dominate across thousands of km. The current investigation attempted to evaluate T. palmi populations from the vegetable environment using morphological and molecular characteristics and their analysis. The first two principal components accounted for 42.55% of total variances in the morphological characteristics in T. palmi when using Principal Component Analysis (PCA) to correlate morphological features with modifications in the species harboring those studied geographical regions. The species was validated by mtCOI analysis, and the 13 accession numbers generated (OP326151, OP080327, OP850036–OP850040, OP315663–OP315667, and OQ29924) were submitted to NCBI. A phylogenetic tree was built utilizing 397 global sequences, and dendrogram analyses revealed that the sequences were divided into 135 subclades, with a single evolutionary branch receiving significant bootstrap support. The presence of 28 haplotypes was found in T. palmi’s worldwide genetic variability as determined by haplotype diversity with two prevailing haplotypes Hap_2 and Hap_4 consisting most of the world sequences. Sequences retrieved from this study were grouped with Hap_2. The results found that haplotype (gene) diversity (Hd), variance, and standard deviation of haplotype diversity were 0.662, 0.00023, and 0.015 for the species worldwide, showing little genetic diversity across geography.