Journal of Pest Science最新文献_第9页

Sex-biased juvenile hormone and gene expression underlie sex difference of stress resistance in the American cockroach 美洲大蠊抗逆性性别差异的原因在于有性别差异的幼年激素和基因表达

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-07-17 DOI: 10.1007/s10340-024-01819-5

Fangfang Liu, Shudian Zhang, Ping Chen, Wei Tang, Xiaoyi Chen, Yingting Wu, Sishi Xia, Diqi Peng, Zhengyi Shao, Qin Li, Yuqing Liu, Xiaoshuai Zhang, Shiming Zhu

{"title":"Sex-biased juvenile hormone and gene expression underlie sex difference of stress resistance in the American cockroach","authors":"Fangfang Liu, Shudian Zhang, Ping Chen, Wei Tang, Xiaoyi Chen, Yingting Wu, Sishi Xia, Diqi Peng, Zhengyi Shao, Qin Li, Yuqing Liu, Xiaoshuai Zhang, Shiming Zhu","doi":"10.1007/s10340-024-01819-5","DOIUrl":"https://doi.org/10.1007/s10340-024-01819-5","url":null,"abstract":"Sexually dimorphic traits are prevalent throughout the animal kingdom, extending to insects. In addition to sex-biased gene expression networks, these traits often involve variations in hormone levels. Juvenile hormone (JH), which is synthesized by corpora allata (CA), regulates development and reproduction in insects. However, there is limited understanding regarding sex-biased gene expression in CA and the sexually dimorphic functions of JH. We discovered sexual dimorphism in JH levels in cockroaches. To explore the underlying mechanism, we analyzed RNA-sequencing data from CA tissues in the adult females and males of the American cockroach, Periplaneta americana. Our investigation revealed significant variation in sex-biased gene expression, with female-biased genes primarily involved in cytochrome P450, glutathione S-transferase and peroxidase pathways, associating with resistance to environmental stress. Notably, exposure to the insecticide imidacloprid, injection of Escherichia coli and H2O2 led to a higher mortality rate in males, whereas females exhibited resistance. Importantly, the application of the JH analog methoprene following the injection of E. coli and H2O2 rescued survival and the expression of stress response-related genes in males. Furthermore, these stressors resulted in reduced JH biosynthesis in males, while females remained unaffected. In summary, our results reveal that sexually dimorphic JH levels and gene expression modulate stress responses in P. americana. These findings shed light on sex-specific responses to environmental stress, offering tailored strategies for pest control based on gender.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"19 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141726258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detection of Paecilomyces formosus in wood-boring beetles associated with oak dieback and decline in the Zagros forests of Iran 在伊朗扎格罗斯森林中与栎树枯死和衰退有关的蛀木甲虫体内检测到甲壳酵母菌

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-07-10 DOI: 10.1007/s10340-024-01805-x

Gelareh Ghaderi, Samad Jamali, Robert A. Haack, Jabbar Valipour

{"title":"Detection of Paecilomyces formosus in wood-boring beetles associated with oak dieback and decline in the Zagros forests of Iran","authors":"Gelareh Ghaderi, Samad Jamali, Robert A. Haack, Jabbar Valipour","doi":"10.1007/s10340-024-01805-x","DOIUrl":"https://doi.org/10.1007/s10340-024-01805-x","url":null,"abstract":"Oak dieback disease caused by the fungus Paecilomyces formosus threatens oak trees in the Zagros forests in western Iran. Various insects, such as wood-infesting beetles (Coleoptera), may play a role in dissemination of P. formosus. We collected larvae and adult insects from branch wood of oak trees with dieback symptoms in the Zagros forests. For larval identification, the mitochondrial gene cytochrome c oxidase I (COXI) was amplified by polymerase chain reaction (PCR). Fungal isolates from wood and insects collected from the sampled oaks were identified by morphology, acid production on creatine sucrose agar (CREA) medium, phylogeny of DNA sequence data for the β-tubulin gene and the internal transcribed spacer (ITS) rDNA. To detect P. formosus in larvae and adult insects, we used a nested PCR assay with the species-specific primer pairs PaMF and PaMR. The insects that most often tested positive for P. formosus were larvae of the buprestids Acmaeodera sp. and Chrysobothris affinis, and larvae of the cerambycid Trichoferus campestris. Adults of C. affinis and Calchaenesthes diversicolis (Cerambycidae), which were collected from within their galleries, also tested positive. Beetle larvae of Anthaxia sp. (Buprestidae), Latipalpis plana (Buprestidae), Monochamus sp. (Cerambycidae) and Crypticus gibbulus (Tenebrionidae) also tested positive. Larvae that tested negative for P. formosus were species of Cossidae (Lepidoptera), Elateridae (Coleoptera), Gasteruptiidae (Hymenoptera) and Syrphidae (Diptera). Future research is needed to determine whether any of these insects can serve as vectors of P. formosus. These results can be used to target-specific insects for monitoring.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"58 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leveraging air-borne VOC-mediated plant defense priming to optimize Integrated Pest Management 利用空气传播的挥发性有机化合物介导的植物防御引物优化虫害综合防治

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-07-10 DOI: 10.1007/s10340-024-01803-z

Ming-hui Wang, Cesar Rodriguez-Saona, Anne-violette Lavoir, Velemir Ninkovic, Kaori Shiojiri, Junji Takabayashi, Peng Han

{"title":"Leveraging air-borne VOC-mediated plant defense priming to optimize Integrated Pest Management","authors":"Ming-hui Wang, Cesar Rodriguez-Saona, Anne-violette Lavoir, Velemir Ninkovic, Kaori Shiojiri, Junji Takabayashi, Peng Han","doi":"10.1007/s10340-024-01803-z","DOIUrl":"https://doi.org/10.1007/s10340-024-01803-z","url":null,"abstract":"Plant defense priming involves the release of air-borne volatile organic compounds (VOCs) by plants, serving to prepare defense-related mechanisms against herbivores and pathogens in adjacent receiver plants. While the concept of VOC-mediated plant defense priming for enhancing plant resistance has garnered considerable attention in the last two decades, it has yet to be fully realized and applied in practical crop protection. This review summarizes current research, examining the spectrum of VOC-mediated plant defense priming in terms of anti-herbivore or anti-pathogen properties, the cost–benefit implications for plants, and the influence of abiotic factors on the priming. Additionally, we explore two promising approaches within the framework of Integrated Pest Management (IPM): the implementation of companion sentinel intercropping and the application of synthetic VOCs. In conclusion, we propose future research directions for this promising area, anticipating that this review will stimulate efforts aimed at harnessing the effects of plant defense priming for the development of innovative pest management strategies and optimized IPM programs in crop protection.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"19 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141566307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exogenous systemin peptide treatment in olive alters Bactrocera oleae oviposition preference 橄榄中的外源系统蛋白肽处理可改变油菜菌的产卵偏好

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-07-08 DOI: 10.1007/s10340-024-01808-8

Luiza Sánchez, Ana E. Cunha, Nuno Rodrigues, José Alberto Pereira, Paula Baptista

{"title":"Exogenous systemin peptide treatment in olive alters Bactrocera oleae oviposition preference","authors":"Luiza Sánchez, Ana E. Cunha, Nuno Rodrigues, José Alberto Pereira, Paula Baptista","doi":"10.1007/s10340-024-01808-8","DOIUrl":"https://doi.org/10.1007/s10340-024-01808-8","url":null,"abstract":"The olive fruit fly, Bactrocera oleae (Rossi), is a key pest of the olive crop, whose control relies mostly on the use of insecticides. Plant peptides may represent a more environmentally-friendly tool to manage olive fly, due to their recognized role to activate and/or prime plant defence responses against pests. In this work, behavioural experiments (no-choice and two-choice) and analysis of volatile compounds were carried out to evaluate the impact of the exogenous application of the peptide systemin to olive tree on olive fly infestation, and to elucidate its mode of action to prime plant defence. The treatment of olive branches with 10 nM systemin showed to confer protection against olive fly, by reducing significantly the ovipositions (up to 3.0-fold) and the number of infested fruits (up to 2.9-fold) when compared to non-treated branches. This protective effect was even detected in neighbouring non-treated branches, suggesting the ability of systemin to trigger plant-to-plant communication. The deterrent activity of the primed olives was associated with the emission of the volatiles 2-ethyl-1-hexanol, 4-tert-butylcyclohexyl acetate and 1, 2, 3-trimethyl-benzene, which were negatively correlated with oviposition and fly infestation. Systemin has also showed to trigger the biosynthesis of specific volatiles (esters) in olives in response to fly attacks. Overall, the observed protection conferred by systemin against olive fly is likely due to the emission of specific volatiles that can act as a defence and/or as signalling molecules to upregulate the plant defence response. Thus, systemin represents a novel and useful tool to manage olive fruit fly.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"17 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141556771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A predatory mite as potential biological control agent of Bemisia tabaci on tomato plants 一种捕食螨，可作为番茄植株上烟粉虱的潜在生物控制剂

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-07-06 DOI: 10.1007/s10340-024-01809-7

André C. Cardoso, Ítalo Marcossi, Morgana M. Fonseca, Milena O. Kalile, Leonardo S. Francesco, Angelo Pallini, Thomas V. M. Groot, Arne Janssen

{"title":"A predatory mite as potential biological control agent of Bemisia tabaci on tomato plants","authors":"André C. Cardoso, Ítalo Marcossi, Morgana M. Fonseca, Milena O. Kalile, Leonardo S. Francesco, Angelo Pallini, Thomas V. M. Groot, Arne Janssen","doi":"10.1007/s10340-024-01809-7","DOIUrl":"https://doi.org/10.1007/s10340-024-01809-7","url":null,"abstract":"Several natural enemies are known as predators of the whitefly Bemisia tabaci, which is one of the most invasive pests worldwide and has developed high resistance to pesticides. However, biological control of this pest on tomato is often difficult because the plant’s glandular trichomes release substances that are toxic to arthropods and hinder the foraging of natural enemies. Therefore, adaptation of natural enemies to this crop is one of the selection criteria for potential biocontrol agents. We collected predatory mites from wild and feral tomato plants and found the species Amblyseius herbicolus and A. tamatavensis. Whereas the latter is known to feed on B. tabaci eggs, we investigated the ability of A. herbicolus to develop and reproduce when feeding on this prey stage, and assessed whether both species can feed and develop on B. tabaci crawlers. To verify the adaptation of these predators to tomato, we assessed their ability to disperse on tomato plants and their establishment on clean tomato plants with pollen as an alternative food. Finally, we evaluated whether the predators were effective in controlling B. tabaci on tomato plants with different pollen dosages as alternative food. We show that both predators fed and reproduced on B. tabaci immatures. A. herbicolus established and dispersed better on tomato plants supplemented with cattail pollen than A. tamatavensis and only A. herbicolus was able to control B. tabaci in two population dynamics experiments. Our results suggest that A. herbicolus is better adapted to tomato than A. tamatavensis and may therefore be a promising biocontrol agent on tomato.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"25 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141553339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clover in vineyards, a potential trap plant for the mealybug Pseudococcus calceolariae—a vector of GLRaV-3 to grapevines but not clover species 葡萄园中的三叶草是蚧壳虫 Pseudococcus calceolaria 的潜在诱捕植物--GLRaV-3 在葡萄藤上的载体，但不包括三叶草物种

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-07-05 DOI: 10.1007/s10340-024-01807-9

Rebecca Gough, Kar Mun Chooi, Manoharie Sandanayaka, Vicky Davis, Duncan Hedderley, Tara Taylor, Daniel Cohen, Cecilia A. Prator, Rodrigo P. P. Almeida, Vaughn A. Bell, Robin M. MacDiarmid

{"title":"Clover in vineyards, a potential trap plant for the mealybug Pseudococcus calceolariae—a vector of GLRaV-3 to grapevines but not clover species","authors":"Rebecca Gough, Kar Mun Chooi, Manoharie Sandanayaka, Vicky Davis, Duncan Hedderley, Tara Taylor, Daniel Cohen, Cecilia A. Prator, Rodrigo P. P. Almeida, Vaughn A. Bell, Robin M. MacDiarmid","doi":"10.1007/s10340-024-01807-9","DOIUrl":"https://doi.org/10.1007/s10340-024-01807-9","url":null,"abstract":"Grapevine leafroll disease (GLD) affects grapevines worldwide. The primary causal agent of GLD is grapevine leafroll-associated virus 3 (GLRaV-3), which spreads to uninfected grapevines via mealybugs and soft-scale insects. Pseudococcus calceolariae (Hemiptera: Pseudococcidae) is a mealybug vector of GLRaV-3 in New Zealand. P. calceolariae also colonizes clovers (Trifolium spp.) growing naturally as vineyard ground cover. Separating mealybug from GLRaV-3 grapevine host could be enhanced by a trap plant: an alternative host attractive to and retentive of the target pest. We evaluated the association between P. calceolariae and ‘Grasslands Huia’ white clover (GHWC). GHWC seed was sown under grapevines in a commercial vineyard (14 × 0.4 ha plots); the control was under-vine herbicide use (7 × 0.4 ha plots, where only few Trifolium spp. plants grew). After 2 years, GHWC cover peaked at 40% mealybug infestation in 2019. From 2018 to 2021, P. calceolariae detection and abundance on GHWC was significantly higher than plants from the control plots. There was no treatment effect for mealybug infestation of grapevine leaves nor of GLRaV-3 incidence, independent of vintage. A glasshouse trial found no transmission of GLRaV-3 by P. calceolariae to any of 256 plants among five clover cultivars tested (Trifolium spp.), including GHWC; mealybug transmitted GLRaV-3 to 35 of 107 Nicotiana benthamiana plants. The results showed that in the 5-year period, added GHWC did not decouple P. calceolariae from the grapevine to reduce GLRaV-3 incidence, but rapid colonization of GHWC by mealybug and the lack of GLRaV-3 transmission to GHWC are encouraging. Further evaluation is needed to assess whether plant biodiversity can benefit a GLRaV-3 ecological management objective.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"67 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141545993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predatory mites as potential biological control agents for tomato russet mite and powdery mildew on tomato 捕食螨是番茄赤粉螨和白粉病的潜在生物控制剂

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-06-28 DOI: 10.1007/s10340-024-01802-0

Ítalo Marcossi, Leonardo S. Francesco, Morgana M. Fonseca, Angelo Pallini, Thomas Groot, Raf De Vis, Arne Janssen

{"title":"Predatory mites as potential biological control agents for tomato russet mite and powdery mildew on tomato","authors":"Ítalo Marcossi, Leonardo S. Francesco, Morgana M. Fonseca, Angelo Pallini, Thomas Groot, Raf De Vis, Arne Janssen","doi":"10.1007/s10340-024-01802-0","DOIUrl":"https://doi.org/10.1007/s10340-024-01802-0","url":null,"abstract":"Tomato plants are attacked by numerous pests and diseases, including the tomato russet mite Aculops lycopersici and powdery mildew, Oidium neolycopersici. Natural enemies of tomato pests are often hindered by the tomato trichomes, while russet mites live under and among these leaf hairs and are therefore protected from these enemies. To find natural enemies that are adapted to tomato and its trichomes, we collected a predatory mite, Amblyseius herbicolus, and an iolinid mite, cf. Homeopronematus anconai sp. nov., from tomato plants in the field. We investigated their potential as biological control agents for pests in this crop. We show that both predators were able to feed and reproduce on russet mites. Subsequently, we show that the iolinid effectively controlled tomato russet mites and powdery mildew on isolated tomato plants, whereas A. herbicolus disappeared from the plants. Altogether, our results show that cf. H. anconai sp. nov. is an efficient biocontrol agent of two key pests on tomato plants. Our results thus contribute to the recent trend of using predators that are effective in controlling both a pest and a pathogen, a promising new strategy for biological crop protection.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"88 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141462614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The interplay of intercropping, wildflower strips and weeds in conservation biological control and productivity 间作、野花带和杂草在保护生物控制和生产力方面的相互作用

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-06-24 DOI: 10.1007/s10340-024-01801-1

Séverin Hatt, Thomas F. Döring

{"title":"The interplay of intercropping, wildflower strips and weeds in conservation biological control and productivity","authors":"Séverin Hatt, Thomas F. Döring","doi":"10.1007/s10340-024-01801-1","DOIUrl":"https://doi.org/10.1007/s10340-024-01801-1","url":null,"abstract":"Different diversification practices have the potential to reduce pests and therefore pesticide use. Yet, their integration at the agroecosystem level and the evaluation of their multifunctional effects remain limited. Through a two-year field experiment conducted in Germany, we tested whether associating intercropping (faba bean-wheat, followed by breadseed poppy-barley) with pluriannual wildflower strips strengthens the biological regulation of aphid pests and weeds, and enhances cropping system productivity. The contribution of flowering weeds to conservation biological control was also analysed. Aphid but also predator colonization and predation rates on bean and poppy were consistently lower in intercropping compared to sole cropping. Wildflower strips enhanced aphid predation in bean-wheat intercropping, and further reduced aphid colonization at 10 m distance but not at 20 m in poppy-barley intercropping. Weed biomass was consistently reduced in intercropping compared to sole cropping bean and poppy, and did not significantly affect bean and poppy yields in intercropping. The cover of one flowering weed species, Matricaria recutita, was negatively correlated to aphid colonization and positively correlated to predation rate. Matricaria recutita flowers were also visited more often by predatory hoverflies in plots adjacent to wildflower strips. Finally, land equivalent ratio was consistently higher than 1, and the highest in bean-wheat intercropping associated to wildflower strips. The study demonstrates the benefits of associating wildflower strips to intercropping to strengthen biological control and cropping system productivity. Flowering weeds, maintained at an acceptable level through intercropping, turn out to be relevant functional biodiversity in interacting with wildflower strips for conservation biological control.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"43 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141444820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bringing light into the dark—plant electrophysiological monitoring of root knot nematode infestation and real-time nematicide efficacy 将光线引入黑暗--根结线虫侵扰和实时杀线虫药效的植物电生理监测

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-06-19 DOI: 10.1007/s10340-024-01798-7

Andrzej Kurenda, Domenica Jenni, Sandro Lecci, Anke Buchholz

{"title":"Bringing light into the dark—plant electrophysiological monitoring of root knot nematode infestation and real-time nematicide efficacy","authors":"Andrzej Kurenda, Domenica Jenni, Sandro Lecci, Anke Buchholz","doi":"10.1007/s10340-024-01798-7","DOIUrl":"https://doi.org/10.1007/s10340-024-01798-7","url":null,"abstract":"This study investigated the infestation of tomato plants by the plant-parasitic nematode, M. incognita, and its accurate detection by plant electrophysiology (PE). Dedicated tests were done on whole plants to record electrophysiological signals from nematode infested and uninfested plants and to establish a trained model indicating nematode-induced stress. Monitoring nematode-induced stress by PE confirmed the results obtained by assessing root galls and quantifying xylem sap 3 to 4 weeks after infestation. The machine learning model captured the stress intensities and the time course of plant damage caused by nematodes. Stress caused by second-stage juveniles (J2) infestation appeared 3 to 5 days after infestation (DAI), whereas stress caused by egg infestation was detected 5 to 7 days later (10–13 DAI). For the first time, the real-time effectiveness of nematicides was recorded in further tests. Nematode infested plants treated preventatively with cyclobutrifluram (TYMIRIUM® technology) showed a delayed and short (about 3 days) period of low stress intensity, whereas infested but untreated plants showed a period of maximum stress for about 12 days. In addition, depending on the type of application (preventative or curative), different modes of biological activity of IRAC group N-2 and N-3 nematicides (fluopyram, abamectin) could be captured by PE signalling. PE offers a new way of monitoring plant health in real time, which is particularly valuable for accessing ‘invisible’ pests, such as plant-parasitic nematodes in the soil.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"44 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141430466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Drought aggravates plant stress by favouring aphids and weakening indirect defense in a sugar beet tritrophic system 在甜菜三营养系统中，干旱有利于蚜虫并削弱间接防御，从而加剧植物的应激反应

IF 4.8 1区农林科学

Journal of Pest Science Pub Date : 2024-06-19 DOI: 10.1007/s10340-024-01799-6

Shahinoor Rahman, Michael Rostás, Ilka Vosteen

{"title":"Drought aggravates plant stress by favouring aphids and weakening indirect defense in a sugar beet tritrophic system","authors":"Shahinoor Rahman, Michael Rostás, Ilka Vosteen","doi":"10.1007/s10340-024-01799-6","DOIUrl":"https://doi.org/10.1007/s10340-024-01799-6","url":null,"abstract":"Climate change leads to more frequent droughts that may alter multitrophic networks in agroecosystems by changing bottom-up and top-down effects on herbivorous insects. Yet, how bottom-up effects of drought alter tritrophic interactions remains poorly understood. This study investigated two intensities of drought stress in the tritrophic system consisting of sugar beet (Beta vulgaris), an aphid (Aphis fabae), and its parasitoid (Aphidius colemani). We thoroughly investigated each trophic level, examining the performance of plants, pest insects, and parasitoids, as well as the attraction of parasitoids to herbivore-induced plant volatiles (HIPVs). Drought stress negatively affected plant growth but benefited A. fabae, leading to faster development and a higher reproduction rate. Drought-stressed plants also emitted less plant volatiles, which resulted in reduced attraction of A. colemani to aphid-infested plants. Drought indirectly affected parasitoid performance, as evidenced by lower emergence rates and production of fewer females, although mummification rates were higher on drought-stressed plants. Reduced parasitoid attraction and performance on drought-stressed plants may exert lower top-down pressure on aphid populations. Combined with increased aphid performance, this may facilitate aphid outbreaks, which could further weaken drought-stressed plants. Our findings highlight the need to study multiple trophic levels and emphasize the importance of incorporating HIPVs and parasitoid attraction when assessing combined abiotic and biotic stresses in crops.","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"88 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141425420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0