Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding Times

Citrus tristeza virus (CTV) is efficiently transmitted in a semi-persistent manner by the brown citrus aphid (Toxoptera citricida (Kirkaldy)). Currently, the most sensitive method for detecting plant viruses in insect vectors is reverse-transcription quantitative polymerase chain reaction (RT-qPCR)....

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Main Authors: Hongsu Wang, Qi Chen, Luqin Liu, Yan Zhou, Huanhuan Wang, Zhongan Li, Jinxiang Liu
Format: Article
Language:English
Published: Hanrimwon Publishing Company 2022-08-01
Series:The Plant Pathology Journal
Subjects:
Online Access:http://www.ppjonline.org/upload/pdf/PPJ-OA-01-2022-0011.pdf
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author Hongsu Wang
Qi Chen
Luqin Liu
Yan Zhou
Huanhuan Wang
Zhongan Li
Jinxiang Liu
author_facet Hongsu Wang
Qi Chen
Luqin Liu
Yan Zhou
Huanhuan Wang
Zhongan Li
Jinxiang Liu
author_sort Hongsu Wang
collection DOAJ
description Citrus tristeza virus (CTV) is efficiently transmitted in a semi-persistent manner by the brown citrus aphid (Toxoptera citricida (Kirkaldy)). Currently, the most sensitive method for detecting plant viruses in insect vectors is reverse-transcription quantitative polymerase chain reaction (RT-qPCR). In this study, the elongation factor-1 alpha (EF-1α) gene and acidic p0 ribosomal protein (RPAP0) gene were confirmed to be suitable reference genes for RT-qPCR normalization in viruliferous T. citricida aphids using the geNorm, NormFinder, and BestKeeper tools. Then the relative CTV titer in aphids (T. citricida) at different post-acquisition feeding times on healthy plants was quantified by RT-qPCR using EF-1α and RPAP0 as reference genes. The relative CTV titer retained in the aphids gradually decreased with increasing feeding time. During the first 0.5 h of feeding time on healthy plants, the remaining CTV titer in aphids showed about 80% rapid loss for the highly transmissible isolate CT11A and 40% loss for the poorly transmissible isolate CTLJ. The relative CTV titer in aphids during more than 12 h post-acquisition times for CT11A was significantly lower than at the other feeding times, which is similar to the trend found for CTLJ. To our knowledge, this is the first report about the relative titer variation of CTV remaining in T. citricida at different post-acquisition feeding times on healthy plants.
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spelling doaj.art-ef2902f8cb7a493b8f476537dc3361c92022-12-22T03:44:46ZengHanrimwon Publishing CompanyThe Plant Pathology Journal1598-22542093-92802022-08-0138428729510.5423/PPJ.OA.01.2022.00112323Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding TimesHongsu Wang0Qi Chen1Luqin Liu2Yan Zhou3Huanhuan Wang4Zhongan Li5Jinxiang Liu6 Citrus Research Institute, Southwest University, Chongqing 400712, China Citrus Research Institute, Southwest University, Chongqing 400712, China Citrus Research Institute, Southwest University, Chongqing 400712, China Citrus Research Institute, Southwest University, Chongqing 400712, China Citrus Research Institute, Southwest University, Chongqing 400712, China Citrus Research Institute, Southwest University, Chongqing 400712, China Citrus Research Institute, Southwest University, Chongqing 400712, ChinaCitrus tristeza virus (CTV) is efficiently transmitted in a semi-persistent manner by the brown citrus aphid (Toxoptera citricida (Kirkaldy)). Currently, the most sensitive method for detecting plant viruses in insect vectors is reverse-transcription quantitative polymerase chain reaction (RT-qPCR). In this study, the elongation factor-1 alpha (EF-1α) gene and acidic p0 ribosomal protein (RPAP0) gene were confirmed to be suitable reference genes for RT-qPCR normalization in viruliferous T. citricida aphids using the geNorm, NormFinder, and BestKeeper tools. Then the relative CTV titer in aphids (T. citricida) at different post-acquisition feeding times on healthy plants was quantified by RT-qPCR using EF-1α and RPAP0 as reference genes. The relative CTV titer retained in the aphids gradually decreased with increasing feeding time. During the first 0.5 h of feeding time on healthy plants, the remaining CTV titer in aphids showed about 80% rapid loss for the highly transmissible isolate CT11A and 40% loss for the poorly transmissible isolate CTLJ. The relative CTV titer in aphids during more than 12 h post-acquisition times for CT11A was significantly lower than at the other feeding times, which is similar to the trend found for CTLJ. To our knowledge, this is the first report about the relative titer variation of CTV remaining in T. citricida at different post-acquisition feeding times on healthy plants.http://www.ppjonline.org/upload/pdf/PPJ-OA-01-2022-0011.pdfcitrus tristeza virusrelative titer variation
spellingShingle Hongsu Wang
Qi Chen
Luqin Liu
Yan Zhou
Huanhuan Wang
Zhongan Li
Jinxiang Liu
Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding Times
The Plant Pathology Journal
citrus tristeza virus
relative titer variation
title Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding Times
title_full Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding Times
title_fullStr Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding Times
title_full_unstemmed Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding Times
title_short Identification of Endogenous Genes for Normalizing Titer Variation of Citrus Tristeza Virus in Aphids at Different Post-acquisition Feeding Times
title_sort identification of endogenous genes for normalizing titer variation of citrus tristeza virus in aphids at different post acquisition feeding times
topic citrus tristeza virus
relative titer variation
url http://www.ppjonline.org/upload/pdf/PPJ-OA-01-2022-0011.pdf
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