Journal of Pest Science最新文献

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Green pest control strategies: essential oil-based nano-emulsions for Delottococcus aberiae management 绿色病虫害防治策略:以精油为基础的纳米乳剂用于控制畸变德洛球菌
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-22 DOI: 10.1007/s10340-025-01914-1
Antonino Modafferi, Alberto Urbaneja, Cristina M. Aure, Francesca Laudani, Vincenzo Palmeri, Giulia Giunti, Orlando Campolo, Meritxell Pérez-Hedo
{"title":"Green pest control strategies: essential oil-based nano-emulsions for Delottococcus aberiae management","authors":"Antonino Modafferi, Alberto Urbaneja, Cristina M. Aure, Francesca Laudani, Vincenzo Palmeri, Giulia Giunti, Orlando Campolo, Meritxell Pérez-Hedo","doi":"10.1007/s10340-025-01914-1","DOIUrl":"https://doi.org/10.1007/s10340-025-01914-1","url":null,"abstract":"<p>Increasing restrictions on synthetic pesticides due to environmental and health concerns have driven the search for alternative environmentally friendly pest management strategies. Essential oils (EOs) from plants like garlic (<i>Allium sativum</i>), clove (<i>Syzygium aromaticum</i>), and eucalyptus (<i>Eucalyptus camaldulensis</i>) have shown promise as bioinsecticides. However, their volatility, low water solubility, and short persistence limit their practical application in Integrated Pest Management programs. To address these challenges, we developed nano-emulsions of these EOs using a high-pressure microfluidization technique, achieving stable formulations with nano-sized droplets (&lt; 200 nm) and optimal polydispersity index and zeta potential values. The insecticidal efficacy of these EO-based nano-emulsions was tested against the invasive citrus pest <i>Delottococcus aberiae</i>, with garlic nano-emulsion (GNE) exhibiting the highest mortality (100% within 24 h), significantly outperforming clove and eucalyptus formulations. GNE exhibited a dose–response mortality against <i>D. aberiae</i> while demonstrating no toxicity (100% of survival) toward <i>Cryptolaemus montrouzieri</i> and no phytotoxicity on citrus plants. Moreover, gene expression analysis revealed that GNE application triggered the overexpression of key genes involved in plant defense pathways, including <i>ICS2</i>, <i>NPR1</i>, <i>PAL</i>, and <i>MYC2</i>, suggesting the activation of both salicylic acid and jasmonic acid signaling pathways. This dual action—direct pest control and enhancement of plant defenses—positions GNE as a powerful tool in sustainable citrus pest management, with potential applications in real-world pest control. The study underscores the potential of EO-based nano-emulsions as a safe, effective, and environmentally sound alternative to chemical insecticides.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"57 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113824","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
Refuge strategies for managing resistance to Bt maize in fall armyworm in smallholder farming systems: a case study from China 小农农业系统中管理秋粘虫对Bt玉米抗性的避难所策略:来自中国的案例研究
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-19 DOI: 10.1007/s10340-025-01896-0
Guodong Kang, Xianming Yang, Haowen Zhang, Yanfang Huang, Yishu Sun, Gemei Liang, Kongming Wu
{"title":"Refuge strategies for managing resistance to Bt maize in fall armyworm in smallholder farming systems: a case study from China","authors":"Guodong Kang, Xianming Yang, Haowen Zhang, Yanfang Huang, Yishu Sun, Gemei Liang, Kongming Wu","doi":"10.1007/s10340-025-01896-0","DOIUrl":"https://doi.org/10.1007/s10340-025-01896-0","url":null,"abstract":"<p>The invasion of fall armyworm <i>Spodoptera frugiperda</i> poses a significant threat to the maize production of smallholder farmers in Asia and Africa. Bt maize is an effective measure for controlling this pest, but resistance management strategies tailored to the smallholder farming systems in the old world remain poorly understood. Surveys conducted from 2021 to 2022 in key infestation regions of Yunnan and Guangxi, China, revealed that an average administrative village includes 633 households, each cultivating 0.22 ha of maize per season, with 95.68% of fields smaller than 0.33 ha. Laboratory and field studies indicated that the high dispersal ability of fall armyworm larvae facilitated frequent larval movement between Bt and non-Bt maize within seed mixtures and structured refuges in smallholder farming systems. Resistance evolution models showed that establishing structured refuges covering 10–20% of households at the village level significantly slowed resistance development. This study proposes a village-based structured refuge strategy, proportionally allocated according to household distribution. The strategy is simple and feasible for smallholder farming systems in developing countries, offering a novel approach for managing resistance to Bt maize in fall armyworms.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"18 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088320","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
Trehalase regulates ovarian maturation and egg hatchability of Nilaparvata lugens 海藻糖酶调控褐飞虱卵巢成熟和卵孵化率
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-19 DOI: 10.1007/s10340-025-01903-4
Yongkang Liu, Yang Zhu, Sijing Wan, Xianzhong Wang, Liwen Guan, Caidi Xu, Binghua Xie, Shigui Wang, Sisi Sun, Bin Tang
{"title":"Trehalase regulates ovarian maturation and egg hatchability of Nilaparvata lugens","authors":"Yongkang Liu, Yang Zhu, Sijing Wan, Xianzhong Wang, Liwen Guan, Caidi Xu, Binghua Xie, Shigui Wang, Sisi Sun, Bin Tang","doi":"10.1007/s10340-025-01903-4","DOIUrl":"https://doi.org/10.1007/s10340-025-01903-4","url":null,"abstract":"<p>Trehalase (TRE) is an important enzyme that is responsible for trehalose hydrolysis. However, the effect of NLTRE on the reproduction of <i>Nilaparvata lugens</i> has not been clearly reported. To comprehensively evaluate the pest control potential of NLTRE, this study analyzed the effect of NLTRE on female reproduction of <i>N. lugens</i> by inhibiting TRE with dsTREs injection at mRNA level and validamycin injection at protein level, respectively. The results showed that validamycin not only significantly reduced the female body weight, but also extended the preoviposition time, but dsTREs had no significant effect on these phenotypes. Besides, validamycin significantly inhibited the ovarian development of females in the early stage, while dsTREs affected the ovarian development in the later stage. However, both two treatments have extremely significantly reduced the total number of eggs laid by female, and the egg hatchability also was extremely significantly decreased, likely due to the destruction of chitin components in egg shells. Therefore, TRE inhibition can decrease the fecundity of <i>N. lugens</i> female, which suggest that TRE is a potential pest control target.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"31 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088321","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 phenylalanine synthesized by whitefly–Portiera symbiosis enhances host survival under fungi infection 白蛉与portiera共生合成的苯丙氨酸可提高真菌侵染下寄主的存活率
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-19 DOI: 10.1007/s10340-025-01915-0
Chao Lv, Song-Xue Zhang, Ji-Sheng Hong, Tian-Yu Wang, Bing-Qi Liu, Chu-Qiao Li, Jin-Yang Yan, Jun-Bo Luan
{"title":"The phenylalanine synthesized by whitefly–Portiera symbiosis enhances host survival under fungi infection","authors":"Chao Lv, Song-Xue Zhang, Ji-Sheng Hong, Tian-Yu Wang, Bing-Qi Liu, Chu-Qiao Li, Jin-Yang Yan, Jun-Bo Luan","doi":"10.1007/s10340-025-01915-0","DOIUrl":"https://doi.org/10.1007/s10340-025-01915-0","url":null,"abstract":"<p>The metabolic cooperation for the phenylalanine synthesis between the host and its obligate symbiont is widespread in hemipteran insects. However, the mechanisms underlying phenylalanine synthesis and its role in hemipteran insects are largely unknown. Our previous study indicates that the whitefly <i>Bemisia tabaci</i> glutamate–oxaloacetate transaminase gene <i>GOT2</i> compensates for <i>tyrB</i> missing from <i>Portiera</i>. Here, we found that the whitefly <i>GOT2</i> and <i>Portiera</i> can cooperate for the synthesis of phenylalanine mainly by silencing <i>GOT2</i>. We further revealed that the phenylalanine synthesized by whitefly–<i>Portiera</i> symbiosis promotes cuticle formation on adult whiteflies. Then, we demonstrated that repression of phenylalanine synthesis by silencing whitefly <i>GOT2</i> does not significantly increase the whitefly mortality under high temperature and low humidity conditions, but it enhances the whitefly mortality when whiteflies were infected with the entomopathogenic fungi <i>Beauveria bassiana</i>. Our results provide experimental evidence on how symbiosis contributes to adult whitefly cuticle formation, revealing parallel histories of the phenylalanine synthesized by the host and its obligate symbiont facilitated cuticle formation in insects housing the bacteriocyte symbionts. This study indicates that the phenylalanine synthesized by insect–bacteria symbiosis may confer the insect adaptation to entomopathogenic fungi. Our findings will also help us to develop an insect symbiosis disruption strategy for pest control.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"60 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088319","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
Niche specialization modeling and potential occurrence of pest species within the rice stink bug complex in the Americas: to each his own? 美洲水稻臭虫复合体中害虫物种的生态位专业化建模和潜在发生:各有各的?
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-14 DOI: 10.1007/s10340-025-01906-1
Juliana L. Vieira, Thiago L. Costa, Abraão A. Santos, Kevin Maebe, José Alexandre F. Barrigossi, Guy Smagghe, Raul Narciso C. Guedes
{"title":"Niche specialization modeling and potential occurrence of pest species within the rice stink bug complex in the Americas: to each his own?","authors":"Juliana L. Vieira, Thiago L. Costa, Abraão A. Santos, Kevin Maebe, José Alexandre F. Barrigossi, Guy Smagghe, Raul Narciso C. Guedes","doi":"10.1007/s10340-025-01906-1","DOIUrl":"https://doi.org/10.1007/s10340-025-01906-1","url":null,"abstract":"<p>Human-induced changes, such as climate variability and escalating anthropogenic pressures, profoundly impact species distribution, dispersal, and competitive interactions worldwide. In the Neotropical region, the expansion of rice cultivation under these conditions has facilitated the spread of species within the rice stink bug complex, notably <i>Oebalus</i> species. Among these species, <i>Oebalus pugnax</i> prevails in the United States (US) and <i>O. poecilus</i> in Neotropical America co-occurring with <i>O. ypsilongriseus</i>, which was recently introduced into the US. This study explores the determinants and predictive variables influencing the occurrence and overlap of rice stink bugs, utilizing maximum entropy species distribution modeling to project their potential distribution. Precipitation and temperature were identified as pivotal factors shaping the ecological niche of <i>O. pugnax</i> in the US, while sensitivity to dry spells appears instrumental in the niche specialization of Neotropical species such as <i>O. ypsilongriseus</i> and <i>O. poecilus</i>. Notably, <i>O. pugnax</i> shows potential for establishment in South America, whereas <i>O. ypsilongriseus</i> and <i>O. poecilus</i> exhibit potential to establish in the southeastern US. Prospects that may aggravate concerns with their potential economic losses under the current trends on global climate changes. Although bioclimate-based distribution modeling provides valuable insights into habitat suitability and species distribution, future research should focus on delineating thermal and humidity thresholds for their development, as well as elucidating interspecific relationships. These endeavors are essential for enhancing our comprehension of their distribution dynamics and assisting in the design of effective pest management strategies, taking advantage of the biological peculiarities and susceptibility to different control methods by each individual species.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"121 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946022","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
Gut bacteria of the fall armyworm, Spodoptera frugiperda, promote host resistance against the toxic effects of lufenuron 秋粘虫(Spodoptera frugiperda)的肠道细菌促进宿主抵抗氟虫腈的毒性作用
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-14 DOI: 10.1007/s10340-025-01908-z
Qianqian Li, Renwen Zheng, Jinyuan Zhao, Sihan Lu, Yue Liu, Dongyan Huang, Jinhui Zhang, Lijuan Liu, Xin Zhou, Qingfeng Tang
{"title":"Gut bacteria of the fall armyworm, Spodoptera frugiperda, promote host resistance against the toxic effects of lufenuron","authors":"Qianqian Li, Renwen Zheng, Jinyuan Zhao, Sihan Lu, Yue Liu, Dongyan Huang, Jinhui Zhang, Lijuan Liu, Xin Zhou, Qingfeng Tang","doi":"10.1007/s10340-025-01908-z","DOIUrl":"https://doi.org/10.1007/s10340-025-01908-z","url":null,"abstract":"<p>The fall armyworm, <i>Spodoptera frugiperda</i> (Lepidoptera: Noctuidae), is a highly polyphagous agricultural pest that seriously threatens food production and agricultural development. Lufenuron is widely used because of its good control effect and safety to nontarget organisms. However, due to the continuous application of lufenuron and the evolution of insect resistance mechanisms, the potential of <i>S. frugiperda</i> developing resistance to lufenuron is increasing. Insect gut bacteria play an important role in insecticide resistance. We established a germ-free (GF) rearing protocol and cultured monoassociated gnotobiotic <i>S. frugiperda</i> with 20 different bacteria to explore the possible mechanisms of gut bacteria resistance in insects. After the larvae were exposed to lufenuron, <i>Klebsiella</i> C3 was screened, which could significantly change the resistance of larvae to lufenuron. Moreover, chitin synthesis and metabolism in larvae fed with <i>Klebsiella</i> C3 were significantly affected. The liquid chromatography results showed that <i>Klebsiella</i> C3 could not directly degrade lufenuron. Nontargeted metabolomics analysis revealed that the intervention of <i>Klebsiella</i> C3 resulted in the production of different metabolites by <i>S. frugiperda</i>, which affected the associated metabolic pathways. These changes in substances may be responsible for the altered sensitivity of <i>S. frugiperda</i> to lufenuron. Taken together, our study investigated how intestinal bacteria influence the resistance of <i>S. frugiperda</i> against insecticides. This research offers new insights for developing preventive and control strategies against this key pest.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"29 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946024","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
Phylogenetic and toxicogenomic profiling of CYPomes to elucidate convergent and divergent insecticide resistance profiles in three rice planthopper species 三种水稻飞虱的系统发育和毒性基因组分析,以阐明趋同和不同的杀虫剂抗性谱
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-14 DOI: 10.1007/s10340-025-01913-2
Kai Lin, Hongxin Wu, Zhongsheng Li, Zichun Zhong, Liuyan He, Yujing Guo, Jie Zhang, Xiaoxia Xu, Wenqing Zhang, Fengliang Jin, Rui Pang
{"title":"Phylogenetic and toxicogenomic profiling of CYPomes to elucidate convergent and divergent insecticide resistance profiles in three rice planthopper species","authors":"Kai Lin, Hongxin Wu, Zhongsheng Li, Zichun Zhong, Liuyan He, Yujing Guo, Jie Zhang, Xiaoxia Xu, Wenqing Zhang, Fengliang Jin, Rui Pang","doi":"10.1007/s10340-025-01913-2","DOIUrl":"https://doi.org/10.1007/s10340-025-01913-2","url":null,"abstract":"<p>Insecticide resistance in pest control poses a threat to agricultural production and human health. Numerous insect species express genes coding for detoxification enzymes that have broad substrate promiscuity thus conferring resistance to various insecticides. However, whether the homologs of these genes play similar roles in resistance phenotypes of closely related species remains largely unclear. Therefore, this study compares the resistance profiles of three major rice planthopper species (Delphacidae) (<i>Laodelphax striatellus</i>, <i>Nilaparvata lugens</i>, and <i>Sogatella furcifera</i>) based on the metabolic activity of their cytochrome P450s. Genome-wide analyses resulted in 68, 70, and 64 P450 genes in <i>L. striatellus</i>, <i>N. lugens</i>, and <i>S. furcifera</i>, respectively. Phylogenetic analyses among these genes found that most resistance-related genes in one species had homologs in other planthopper species. The most resistance-relevant orthogroup (<i>CYP6ER</i>s) showed higher evolutionary instability than most other groups. RNAi and in vitro metabolism assays revealed that <i>CYP6ER</i>s confers more divergent insecticide resistance profiles among planthopper species than the other two major resistance-related P450 subfamilies (<i>CYP6AY</i>s and <i>CYP4C61</i>s). Alphafold-based structural predictions and alignments suggested that P450 orthogroups with higher phylogenetic instability tended to have less structural similarities, resulting in more divergent metabolic profiles. This relationship was also in silico validated on Aphidae aphids and Lepidoptera noctuids. This study proposes combined phylogenetic and toxicogenomic analyses for understanding CYPome-based insecticide resistance convergency and divergency among closely related pests. These findings may improve the accuracy and rationality of chemical pest control.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"123 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946023","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
Will rice-preferred fall armyworm, Spodoptera frugiperda be a new threat to rice production in China? 水稻偏好的秋粘虫(Spodoptera frugiperda)是否会成为中国水稻生产的新威胁?
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-13 DOI: 10.1007/s10340-025-01909-y
Zhichun Zhang, Hongtao Niu, Dongxiao Zhao, Shuai Sun, Hanyang Dai, Lu Xu, Huifang Guo
{"title":"Will rice-preferred fall armyworm, Spodoptera frugiperda be a new threat to rice production in China?","authors":"Zhichun Zhang, Hongtao Niu, Dongxiao Zhao, Shuai Sun, Hanyang Dai, Lu Xu, Huifang Guo","doi":"10.1007/s10340-025-01909-y","DOIUrl":"https://doi.org/10.1007/s10340-025-01909-y","url":null,"abstract":"<p>The fall armyworm, <i>Spodoptera frugiperda</i>, a significant pest, has spread to many countries in Africa and Asia in recent years, causing substantial losses in corn production. From 2019 to 2024, we monitored the host strain of <i>S. frugiperda</i> in various regions in Jiangsu Province, China. The result showed that only <i>COI</i>RS-<i>Tpi</i>RS and <i>COI</i>RS-<i>Tpi</i>CS strains were present in corn during 2019 and 2020. In 2021, <i>COI</i>RS-<i>Tpi</i>RS, <i>COI</i>RS-<i>Tpi</i>CS and <i>COI</i>CS-<i>Tpi</i>CS strains were detected in both corn and rice. By 2024, all the three strains were found exclusively in corn. Notably, the proportion of <i>COI</i>RS-<i>Tpi</i>RS strain increased from 2019 to 2021, but declined in 2024. Experimental data demonstrated that <i>COI</i>RS-<i>Tpi</i>RS had higher fitness on rice than on corn, and showed a preference for damaging and ovipositing on rice. However, the occurrence of <i>S. frugiperda</i> in rice paddies remains rare, suggesting that it is unlikely to become a significant threat to rice production in China in the coming years without change in rice planting pattern.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"96 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940154","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
Increased nitrogen deposition may benefit male poplars over female conspecifics through enhanced resistance to both specialist and generalist herbivores 氮沉降的增加可能通过增强对专门性和通用性食草动物的抗性而使雄性杨树优于雌性同种杨树
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-10 DOI: 10.1007/s10340-025-01899-x
Wanci He, Zhengbao Zhao, Guoqing Zhu, Shuya Yang, Abdul Manan, Fang He, Lianghua Chen, Tiantian Lin
{"title":"Increased nitrogen deposition may benefit male poplars over female conspecifics through enhanced resistance to both specialist and generalist herbivores","authors":"Wanci He, Zhengbao Zhao, Guoqing Zhu, Shuya Yang, Abdul Manan, Fang He, Lianghua Chen, Tiantian Lin","doi":"10.1007/s10340-025-01899-x","DOIUrl":"https://doi.org/10.1007/s10340-025-01899-x","url":null,"abstract":"<p>The deposition of atmospheric nitrogen has globally increased and has interfered with plant growth and resistance to herbivores. Previous studies have shown that numerous dioecious plant species exhibit sex-specific responses in growth and tolerance to increased atmospheric nitrogen deposition. However, whether these changes lead to sexual differences in herbivore resistance and subsequent intersexual competition between male and female conspecifics remains unknown. Here, we used female and male siblings of <i>Populus deltoides</i> to investigate the effect of simulated nitrogen deposition on herbivore resistance and competitive ability of male and female plant conspecifics under controlled and field conditions. We showed that simulated nitrogen deposition significantly increased the growth of both plant sexes, with females outperforming males. The herbivore feeding bioassays demonstrated that simulated nitrogen deposition decreased the resistance of both plant sexes to generalist and specialist herbivores, with female plants exhibiting lower resistance than males. This could be attributed to decreased levels of leaf structural defense in females in response to simulated nitrogen deposition. A short-term competition test in the climate chamber revealed that simulated nitrogen deposition increased the competitive ability of females over males, whereas herbivore feeding reversed this advantage. A long-term competition experiment in the field further confirmed that male plants may benefit from increased atmospheric nitrogen deposition through enhanced herbivore resistance and intersexual competition compared to their female conspecifics. The findings provide potential implications for the selection of suitable sex of dioecious plants during forestation in natural habitats experiencing high levels of atmospheric nitrogen deposition.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"8 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931272","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
Nitenpyram resistance and IR56 feeding jointly drive the wing dimorphism in Nilaparvata lugens 耐虫性和IR56取食共同驱动褐飞虱翅膀二型性
IF 4.8 1区 农林科学
Journal of Pest Science Pub Date : 2025-05-10 DOI: 10.1007/s10340-025-01911-4
Ruifang Chen, Huihui Zhang, Jianzheng Zou, Jiayi Chen, Zewen Liu
{"title":"Nitenpyram resistance and IR56 feeding jointly drive the wing dimorphism in Nilaparvata lugens","authors":"Ruifang Chen, Huihui Zhang, Jianzheng Zou, Jiayi Chen, Zewen Liu","doi":"10.1007/s10340-025-01911-4","DOIUrl":"https://doi.org/10.1007/s10340-025-01911-4","url":null,"abstract":"<p><i>Nilaparvata lugens</i> Stål is a significant insect pest of rice throughout Asia, and the use of insect-resistant rice varieties has been proposed as a key strategy to control this pest, and reduce reliance on insecticides. However, little is known about the interplay between these two methods, particularly their combined influence on the behavior, development, and reproduction. In this study, we found that both nitenpyram resistance in BPH and resistance in the rice variety to BPH jointly regulated wing dimorphism. A large proportion of long-winged BPHs (78%) were observed in the nitenpyram-resistant strain (NitR) when feeding on IR56, a BPH-resistant rice variety. No similar result in SUS (susceptible) insects was observed on either IR56 or TN1, nor in NitR insects on TN1. These results suggest that nitenpyram resistance and feeding on IR56 together regulated BPH wing dimorphism. Through quantitative analysis of hormone and insulin pathway genes, we found that a decrease in juvenile hormone (JH) and/or an increase in ecdysone (20E) induced the long-winged morph, accompanied by a reduction in the expression of insulin receptor 2 (<i>InR2</i>). Alterations in hormone levels and silencing <i>InR2</i> could regulate wing morph differentiation. In males, JH III addition decreased long-wing proportion from 72 to 42%, while silencing <i>InR2</i> increased long-wing proportion from 27 to 71%. This study suggests a potential risk that the insect-resistant rice variety may promote the spread of resistant insects, creating a contradiction in the combined use of insecticides and insect-resistant varieties.</p>","PeriodicalId":16736,"journal":{"name":"Journal of Pest Science","volume":"50 1","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931135","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}
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