Article
Agronomy
Kaixin Li, Jiantao Liu, Ziqiong Geng, Wei Xu, Zhuang Zhang, Dong Chu, Lei Guo
Summary: This study identified a highly resistant Bemisia tabaci population to dinotefuran, a new neonicotinoid insecticide. The resistance was found to be polygenic and incompletely recessive. The study revealed the involvement of P450 enzymes, particularly the CYP6DW5 gene, in the resistance mechanism. This information is important for resistance management in B. tabaci.
PEST MANAGEMENT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Juan Tang, Haowei Shen, Rong Zhang, Fengbo Yang, Jinyu Hu, Jinting Che, Hongyan Dai, Hong Tong, Qingjun Wu, Youjun Zhang, Qi Su
Summary: Flavonoids in plants have been shown to have pleiotropic effects in defense against abiotic and biotic stresses. This study investigated whether seed priming with rutin, a type of flavonoid, can enhance tomato resistance against the whitefly. The results showed that rutin seed treatment reduced the developmental rate and feeding efficiency of the whitefly, and was associated with increased flavonoid accumulation and expression of defense genes. These findings suggest that seed treatment with rutin can prime tomato resistance against the whitefly without affecting shoot growth.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Tian-hua Du, Cheng Yin, Lian-you Gui, Jin-jin Liang, Shao-nan Liu, Bu-li Fu, Chao He, Jing Yang, Xue-gao Wei, Pei-Pan Gong, Ming-jiao Huang, Hu Xue, Jin-Yu Hu, He Du, Yao Ji, Rong Zhang, Chao Wang, Cheng-jia Zhang, Xin Yang, You-jun Zhang
Summary: The whitefly has developed high metabolic resistance to most neonicotinoids, and UGT353G2 may be involved in this resistance. UGT inhibitors enhance the toxic damage of neonicotinoids to the whitefly, while RNA interference increases the sensitivity of the whitefly to neonicotinoids.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2023)
Article
Entomology
Marwa Zidi, Khouloud Klai, Johann Confais, Benoit Chenais, Aurore Caruso, Francoise Denis, Maha Mezghani Khemakhem, Nathalie Casse
Summary: The genome-wide screening of TEs in the B. tabaci genome revealed the presence of numerous clustered TE copies. The analysis of TE insertion sites identified insertions within or near defensome genes.
Article
Agronomy
Fengqi Li, Youssef Dewer, Du Li, Cheng Qu, Chen Luo
Summary: This study investigated the functions of the CSP2 gene in the whitefly Bemisia tabaci, revealing its binding affinity to various plant volatiles and identifying key amino acid residue Y11 essential for binding to DMNT. Furthermore, CSP2 showed high sequence similarity with CSPs of other insect family members, highlighting its potential role in mediating responses to plant volatiles and implications for pest management strategies.
PEST MANAGEMENT SCIENCE
(2021)
Article
Agronomy
Jinyu Hu, Buli Fu, Jinjin Liang, Rong Zhang, Xuegao Wei, Jing Yang, Qimei Tan, Hu Xue, Peipan Gong, Shaonan Liu, Mingjiao Huang, Tianhua Du, Cheng Yin, Chao He, Yao Ji, Chao Wang, Chengjia Zhang, He Du, Qi Su, Xin Yang, Youjun Zhang
Summary: The study found that the whitefly has developed resistance to neonicotinoid insecticides, and this resistance is closely related to the overexpression of the P450 gene CYP4CS5. Knockdown of CYP4CS5 through RNA interference increased mortality in both the resistant and susceptible populations when treated with neonicotinoids, but the opposite result was obtained when using a transgenic fruit fly expressing CYP4CS5. Additionally, the resistant whitefly exhibited a longer development time, shorter longevity, and reduced fecundity compared to the susceptible, indicating fitness costs associated with resistance.
PEST MANAGEMENT SCIENCE
(2023)
Article
Plant Sciences
Susana Pascual, Clara I. Rodriguez-alvarez, Isgouhi Kaloshian, Gloria Nombela
Summary: The Mi-1 gene in tomato provides resistance against nematodes and insects, but the resistance mechanisms differ depending on the harmful organism. The Hsp90 gene has been shown to be involved in the Mi-1-mediated resistance for nematodes and aphids, but its role in resistance to whiteflies was unclear. This study demonstrates that the Hsp90 gene is required for the Mi-1-mediated resistance to whiteflies, supporting the hypothesis of a common model for resistance against nematodes and insects.
Review
Agronomy
Mustapha Abubakar, Bhupendra Koul, Krishnappa Chandrashekar, Ankush Raut, Dhananjay Yadav
Summary: The whitefly is a destructive insect pest that causes significant crop damage through direct feeding and transmission of diseases. Traditional synthetic pesticides have adverse effects, making it necessary to explore suitable and safe strategies for whitefly management. However, research on whitefly-resistant transgenic plants is limited.
Article
Cell Biology
Habibu Mugerwa, Saurabh Gautam, Michael A. Catto, Bhabesh Dutta, Judith K. Brown, Scott Adkins, Rajagopalbabu Srinivasan
Summary: This study investigated the differentially expressed genes associated with the acquisition of different begomoviruses in two cryptic species of whitefly. It was found that the acquired viruses and cryptic species could affect gene expression differently, especially genes related to metabolism and organismal systems. Contrasting expression patterns were observed in genes associated with virus infection and immune systems.
Article
Biotechnology & Applied Microbiology
Carolina Senhorinho Ramalho Pizetta, William Rafael Ribeiro, Amanda Lopes Ferreira, Matheus da Costa Moura, Kenny Bonfim, Patricia Valle Pinheiro, Glaucia Barbosa Cabral, Francisco Jose Lima Aragao
Summary: The study demonstrates that introducing RNA interference constructs against whiteflies in genetically modified tomato plants can effectively reduce whitefly populations and damages, laying the foundation for developing elite tomato varieties resistant to whiteflies.
PLANT CELL TISSUE AND ORGAN CULTURE
(2022)
Article
Multidisciplinary Sciences
Anthelme-Jocelin N'cho, Koutoua Seka, Kouame Patrice Assiri, Christophe Simiand, Daniel H. Otron, Germain Ochou, Kouassi Arthur Jocelin Konan, Marie-France Kouadio, Lassina Fondio, Hortense Atta Diallo, Thibaud Martin, Helene Delatte
Summary: In Cote d'Ivoire, whiteflies of the Bemisia tabaci species complex, particularly the MED ASL species, are causing damage to vegetable crops, indicating their role as main vectors of phyto-viruses. The presence of different whitefly species on tomato and associated crops highlights the need for effective monitoring and management strategies. Hybrid genotypes between the main species MED ASL and MED Q1 were also found, although in low prevalence. Maintaining whitefly population monitoring is crucial for successful crop management in Cote d'Ivoire.
Article
Agronomy
Nicholas Johnston, Thomson Paris, Matthews L. Paret, Josh Freeman, Xavier Martini
Summary: Despite intensive control efforts, whitefly Bemisia tabaci remains a challenging pest to manage. A study found that the combination of kaolin and limonene as a natural organic repellent can reduce whitefly populations and decrease the incidence of Tomato Yellow Leaf Curl Virus. However, the effectiveness of limonene-scented kaolin as a whitefly repellent appears to largely depend on rainfall.
Article
Entomology
Lei Guo, Zhuang Zhang, Wei Xu, Jiangya Ma, Ni Liang, Changyou Li, Dong Chu
Summary: This study reveals that the P450 gene CYP402C1 is associated with the resistance of Bemisia tabaci to imidacloprid. Knocking down CYP402C1 significantly reduces the resistance of B. tabaci, while overexpressing CYP402C1 in transgenic Drosophila melanogaster increases resistance. Heterologous expression of CYP402C1 shows its ability to metabolize imidacloprid.
Article
Agronomy
Jinjin Liang, Jing Yang, Jinyu Hu, Buli Fu, Peipan Gong, Tianhua Du, Hu Xue, Xuegao Wei, Shaonan Liu, Mingjiao Huang, Cheng Yin, Yao Ji, Chao He, Wen Xie, Ran Wang, Xin Yang, Youjun Zhang
Summary: The study reveals that CYP4G68 plays a vital role in conferring imidacloprid and thiamethoxam resistance in Bemisia tabaci MED. Enhanced expression of CYP4G68 appears to mediate the resistance, and silencing CYP4G68 increases susceptibility to the insecticides. These findings contribute to our understanding of the role of P450s in insecticide resistance and offer a potential target for sustainable control of destructive insect pests.
Article
Entomology
Wei-Hua Li, De-Fen Mou, Chien-Kuei Hsieh, Sung-Hsia Weng, Wen-Shi Tsai, Chi-Wei Tsai
Summary: Tomato yellow leaf curl viruses are causing disease outbreaks in tomato crops in tropical and subtropical regions globally. Sweet potato whitefly is the vector of this group of viruses. This research focused on the transmission biology of tomato yellow leaf curl Thailand virus (TYLCTHV) by Bemisia tabaci, revealing the virus translocation within the whitefly without replication and lack of evidence for transovarial transmission.
Article
Agronomy
Emily A. Masinde, Bernadetta Kimata, Joshua O. Ogendo, Richard M. S. Mulwa, Geoffrey Mkamilo, Midatharahally N. Maruthi
Summary: Research on developing cassava varieties with dual resistance to cassava mosaic disease and cassava brown streak disease through hybridization showed promising results in reducing losses in cassava production in sub-Saharan Africa. Traits with high heritability and selection accuracy, such as foliar symptoms, root necrosis, root number, and harvest index, can assist in breeding superior cassava varieties with minimal impact from diseases.
Article
Multidisciplinary Sciences
Laura Perez-Fons, Tatiana M. Ovalle, M. N. Maruthi, John Colvin, Luis Augusto Becerra Lopez-Lavalle, Paul D. Fraser
Article
Multidisciplinary Sciences
Darren J. Kriticos, Ross E. Darnell, Tania Yonow, Noboru Ota, Robert W. Sutherst, Hazel R. Parry, Habibu Mugerwa, M. N. Maruthi, Susan E. Seal, John Colvin, Sarina Macfadyen, Andrew Kalyebi, Andrew Hulthen, Paul J. De Barro
SCIENTIFIC REPORTS
(2020)
Article
Agronomy
N. R. Prasannakumar, M. N. Maruthi
Summary: The study investigated interactions among host plants, a virus, insect vector whiteflies and their bacterial endosymbionts. Host plants significantly affected whitefly and endosymbionts, which in turn influenced virus transmission. Whiteflies favored eggplant for growth while being least preferred on okra and tomato.
Review
Agronomy
Wikum H. Jayasinghe, Md Shamim Akhter, Kenji Nakahara, Midatharahally N. Maruthi
Summary: The transmission of plant viruses by aphids plays a significant role in crop production. The process is influenced by insect morphology and biology, and has been extensively studied over the past century.
PEST MANAGEMENT SCIENCE
(2022)
Article
Virology
Siji Kavil, Gerald Otti, Sophie Bouvaine, Andrew Armitage, Midatharahally N. Maruthi
Summary: The PAL gene plays a significant role in enhancing resistance to CBSD in cassava plants, with early induction being key for resistance.
Article
Ecology
Hajar El Hamss, Saptarshi Ghosh, M. N. Maruthi, Helene Delatte, John Colvin
Summary: Through hybridization experiments, it was found that Arsenophonus has a negative impact on the fitness of whiteflies, intra-specific crosses showed no reproductive incompatibility, while inter-specific crosses exhibited reproductive incompatibility. Additionally, high microbial diversity was discovered in SSA1-SG3 and SSA2 whiteflies.
ECOLOGY AND EVOLUTION
(2021)
Article
Microbiology
Hajar El Hamss, M. N. Maruthi, Hadija M. Ally, Christopher A. Omongo, Hua-Ling Wang, Sharon van Brunschot, John Colvin, Helene Delatte
Summary: The composition and diversity of bacterial endosymbionts in Bemisia tabaci populations infesting cassava crops in Uganda changed over time, with higher bacterial diversity in samples collected in 1997 compared to 2017. This coincided with the occurrence of super-abundant cassava-whitefly populations.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Plant Sciences
Priya Naganur, Kodegandlu Subbanna Shankarappa, Raghavendra K. Mesta, Chilakalapudi Durga Rao, Venkataravanappa Venkataravanappa, Midatharahally Narasegowda Maruthi, Lakshminarayana Reddy C. Narasimha Reddy
Summary: The incidence and severity of begomovirus diseases have been increasing globally, and ridge gourd is the latest crop to be highly susceptible to the outbreak of tomato leaf curl New Delhi virus (ToLCNDV) in India. This study successfully produced polyclonal antibodies (ToLCNDV-Rg-CP-PAb) using the coat protein (CP) gene from a ToLCNDV-Rg isolate, which could detect the virus in symptomatic ridge gourd leaf samples through multiple assays. The antibodies also detected other commonly occurring begomoviruses in South India, providing a tool for monitoring disease outbreaks in multiple crops.
Article
Multidisciplinary Sciences
Hadija M. Ally, Hajar El Hamss, Christophe Simiand, M. N. Maruthi, John Colvin, Helene Delatte
Summary: Outbreaks of whitefly, Bemisia tabaci species in East and Central Africa have driven the spread of plant-virus diseases. The highly abundant 'invader' population of B. tabaci is responsible for spreading these diseases from Uganda to neighboring countries. Molecular analysis confirms the presence of multiple local Tanzanian B. tabaci species independent of the spread of invasive B. tabaci populations.
Article
Virology
Abdoallah Sharaf, Przemyslaw Nuc, Jan Ripl, Glenda Alquicer, Emad Ibrahim, Xifeng Wang, Midatharahally N. Maruthi, Jiban Kumar Kundu
Summary: By comparing the transcriptome of wheat genotypes with different levels of resistance to WDV, we observed a higher number of differentially expressed transcripts in the susceptible genotype. Functional analysis revealed enrichment of GO terms related to biological processes, cellular components, and molecular functions associated with WDV infection. Some specific genes showed expression patterns related to resistance or susceptibility to WDV.
Article
Virology
Glenda Alquicer, Emad Ibrahim, Midatharahally N. Maruthi, Jiban Kumar Kundu
Summary: Barley yellow dwarf viruses (BYDVs) are widely spread and economically important pathogens that affect cereal crops. Resistance breeding is the most effective approach to mitigate the impact of BYDVs. Through RNA sequencing analysis, potential genes involved in BYDV infection in resistant barley genotypes have been identified. Nine putative genes related to resistance to BYDV-PAV were selected for investigation, including NBS-LRR, CC-NBS-LRR, RLK, casein kinase, protein kinase, protein phosphatase subunits, MYB TF, GRAS TF, and MADS-box TF.
Review
Plant Sciences
Arthur K. Tugume, Deusdedith R. Mbanzibwa, Titus Alicai, Christopher A. Omongo, M. N. Maruthi
Summary: Viruses have the ability to colonize new hosts and niches due to their genetic and evolutionary plasticity. Changes in viral or environmental factors can determine the epidemiological status of a virus, as seen in the case of sweet potato mild mottle virus (SPMMV). SPMMV remains endemic in eastern Africa and causes significant losses, but its global occurrence is limited. Despite its importance, there are research gaps surrounding SPMMV that hinder virus disease management in sweet potato.
PHYTOBIOMES JOURNAL
(2023)
Article
Biotechnology & Applied Microbiology
Lahcen I. Campbell, Joachim Nwezeobi, Sharon L. van Brunschot, Tadeo Kaweesi, Susan E. Seal, Rekha A. R. Swamy, Annet Namuddu, Gareth L. Maslen, Habibu Mugerwa, Irina M. Armean, Leanne Haggerty, Fergal J. Martin, Osnat Malka, Diego Santos-Garcia, Ksenia Juravel, Shai Morin, Michael E. Stephens, Paul Visendi Muhindira, Paul J. Kersey, M. N. Maruthi, Christopher A. Omongo, Jesus Navas-Castillo, Elvira Fiallo-Olive, Ibrahim Umar Mohammed, Hua-Ling Wang, Joseph Onyeka, Titus Alicai, John Colvin
Summary: This study provides insights into the genetics underlying the biology of Bemisia tabaci sensu lato, including the identification of three biological species within African cassava populations and the analysis of gene families related to detoxification, sugar metabolism, and vector competency. The findings contribute to the development of innovative whitefly and virus-control strategies.
Article
Entomology
N. R. Prasannakumar, M. N. Maruthi
Summary: The study identified whitefly proteins interacting with ToLCBV coat protein, including heat shock proteins, nucleoproteins, vitellogenins, etc., which could be potential targets for future whitefly control strategies.
INTERNATIONAL JOURNAL OF TROPICAL INSECT SCIENCE
(2022)