Article
Entomology
Joseph L. Spencer, Timothy R. Mabry, Eli Levine, Scott A. Isard
Summary: Research shows that the activity of rotation-resistant beetles in soybean is influenced by specific proteinases and an adapted gut microbiota, providing limited protection against soybean defenses. The impact of soybean and corn herbivory on rotation-resistant female survival and flight initiation was investigated through mortality assays and wind tunnel flight tests.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Felipe Augusto Moretti Ferreira Pinto, Victor Biazzotto Correia Porto, Rafaela Araujo Guimaraes, Carolina da Silva Siqueira, Mirian Rabelo de Faria, Jose da Cruz Machado, Henrique Novaes Medeiros, Dagma Dionisia da Silva, Helon Santos Neto, Edson Ampelio Pozza, Flavio Henrique Vasconcelos de Medeiros
Summary: In this study, the relationship between abiotic factors and crop management practices with the inoculum of Stenocarpella spp. in stubble was analyzed. The study found that factors such as crop rotation, no-tillage systems, and tillage systems were correlated with pathogen concentration and soil suppressiveness.
APPLIED SCIENCES-BASEL
(2022)
Article
Entomology
Eduardo Neves Costa, Bruno Henrique Sardinha de Souza, Zulene Antonio Ribeiro, Durvalina Maria Mathias dos Santos, Arlindo Leal Boica Junior
Summary: The South American rootworm Diabrotica speciosa causes economic losses by attacking plant roots and spreading disease. The study found that the Azteca maize landrace has tolerance to the root feeding larvae, possibly due to higher levels of chlorophyll and carotenoids.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2021)
Article
Agronomy
Lin Mao, Yongjun Liu, Jianjun Zhang, Jessica Okerblad, Senyu Chen, Nancy Collins Johnson
Summary: Inoculation with living soil significantly reduced maize biomass and yield, showing strong negative soil biotic legacy effects under continuous monoculture (CM). However, the effects of soil biota on most maize variables were relatively stable over time. The responses in root system structure were closely related to AM fungal diversity and community composition.
Article
Agronomy
Urszula Wachowska, Bogumil Rychcik
Summary: This study analyzed the impact of crop rotation and long-term monoculture on soil fungal communities. The results showed that monoculture had lower fungal diversity compared to crop rotation, and specific fungal communities were more prevalent in crop rotation. In addition, herbicides also influenced the abundance of specific cellulolytic fungi. These findings indicate that the cropping sequence plays a significant role in shaping the soil microbiome.
Article
Agronomy
Xiaowei Wang, Xiaoyu Li, Jiatong Gu, Wenqi Shi, Haigen Zhao, Chen Sun, Songcai You
Summary: This study used in situ maize-phenology data from three different sources to establish a maize-phenology data set, including nine phenological stages and phenological stage maps. The relationship between each phenological stage and date, longitude, latitude, and altitude was revealed using multiple stepwise regression and the spatial variation of each phenological stage was explored using ArcGIS. The validated data set can be used for various purposes, including real-time warning and prediction of maize-related meteorological hazards.
Article
Plant Sciences
Julio S. S. Bernal, Anjel M. M. Helms, Ana A. A. Fontes-Puebla, Thomas J. J. DeWitt, Michael V. V. Kolomiets, John M. M. Grunseich
Summary: Domestication has a greater impact on the abundances and diversity of maize root volatiles than northward spread and modern breeding. The preference of the herbivore for maize roots is correlated with volatile diversity and herbivore resistance. Changes in abundances of individual volatiles are evident at the level of volatile groups, and maize domestication has the greatest effects.
Article
Agronomy
Andras Gyeraj, Mark Szalai, Zoltan Palinkas, Charles Richard Edwards, Jozsef Kiss
Summary: This research showed that WCR densities of up to 8 adults/ear are not likely to lead to economic damage in sweet maize.
Article
Agronomy
Ignacio Massigoge, Ana Carcedo, Jane Lingenfelser, Trevor Hefley, P. V. Vara Prasad, Dan Berning, Sara Lira, Carlos D. Messina, Charles W. Rice, Ignacio Ciampitti
Summary: Region-specific guidelines for maize management are essential in the US Great Plains. This study aimed to define maize yield environments, explore optimal planting date and hybrid maturity combinations, and identify different windows for maximizing yields. Historical weather data from 70 sites were used to analyze maize field dataset and simulate yields using the APSIM model. Results showed that long-maturing hybrids achieved greater yields, while late planting increased stability in central environments. Short-season hybrid maturities allowed for anticipation of physiological maturity date without yield penalties. The study suggests adopting region-specific guidelines to optimize yield and intensify maize-based farming systems.
EUROPEAN JOURNAL OF AGRONOMY
(2023)
Article
Entomology
Charles Martins de Oliveira, Marina Regina Frizzas
Summary: The Chrysomelidae species Percolaspis cf. ornata has been identified feeding on and causing damage to soybean, corn, and cotton crops in the state of Mato Grosso, Brazil, where it was previously unknown to be a pest. This first record highlights the importance of monitoring and developing management strategies for this emerging pest in the main grain-producing region of the country.
NEOTROPICAL ENTOMOLOGY
(2021)
Article
Plant Sciences
Jonathan Jesus Ojeda, M. Rafiq Islam, Martin Correa-Luna, Juan Ignacio Gargiulo, Cameron Edward Fisher Clark, Diego Hernan Rotili, Sergio Carlos Garcia
Summary: Maize silage is an important component of dairy feed rations, but its nutritive value can be compromised by in-season changes in crop development. In this study, the Agricultural Production Systems Simulator (APSIM) was calibrated to accurately predict changes in crop partitioning and composition, specifically the harvest index (HI) of maize silage. The model showed good simulation performance for crop growth and phenology, and the main drivers of HI variability were found to be genotype and water status. The calibrated APSIM model can be used to improve maize silage nutritive value and assist in genotype selection and harvest timing decision-making.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Bayissa Regassa, Adane Abraham, Chemeda Fininsa, Dagne Wegary, Yitbarek Wolde-Hawariat
Summary: This study confirmed that MLN-infested soil is essential for the survival and spread of MCMV, but SCMV was not detected or transmitted in the soil. One of the major causes of severe maize yield losses is MLN infection, so proper management or clearing of crop residues and crop rotation are necessary to reduce the impact of MLN disease on maize production.
EUROPEAN JOURNAL OF PLANT PATHOLOGY
(2022)
Article
Agronomy
Charles Martins de Oliveira, Marina Regina Frizzas
Summary: The study evaluated the root consumption by larvae of P. capillata in soybean and A. bolboceridus in maize, and estimated the damage caused by these species in field production. The results showed that both species of white grubs significantly reduced soybean and maize productivity, highlighting the importance of monitoring and managing these pests in crop production.
Article
Agronomy
Zhoujie Ma, Peizhen Wu, Lei Deng, Kaiwu Zhang, Wenpeng Yang, Hong Ren, Li Song, Wei Wang
Summary: The nutritional composition of maize grains can be enhanced by introducing a mutation with increased lysine content. This study utilized a molecular-marker-assisted selection technique to obtain double-recessive mutant lines for o16 and wx genes in order to explore the molecular mechanism responsible for maize's nutritional quality. The results showed differential gene expression in lysine and tryptophan metabolism pathways, suggesting potential strategies for improving maize grain quality.
Article
Plant Sciences
Liang He, Weiwei Sun, Xiang Chen, Liqi Han, Jincai Li, Yuanshan Ma, Youhong Song
Summary: This study successfully modeled the final morphology of maize canopy under increased interplant competition by revising the ADEL-Maize model, revealing the impact of increased plant density on canopy morphology. The research laid a foundation for studying the adaptability of maize under high interplant competition.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Multidisciplinary Sciences
Dalton C. Ludwick, Aaron C. Ericsson, Lisa N. Meihls, Michelle L. J. Gregory, Deborah L. Finke, Thomas A. Coudron, Bruce E. Hibbard, Kent S. Shelby
SCIENTIFIC REPORTS
(2019)
Article
Multidisciplinary Sciences
Man P. Huynh, Bruce E. Hibbard, Michael Vella, Stephen L. Lapointe, Randall P. Niedz, Kent S. Shelby, Thomas A. Coudron
SCIENTIFIC REPORTS
(2019)
Correction
Multidisciplinary Sciences
Man P. Huynh, Bruce E. Hibbard, Stephen L. Lapointe, Randall P. Niedz, B. Wade French, Adriano E. Pereira, Deborah L. Finke, Kent S. Shelby, Thomas A. Coudron
SCIENTIFIC REPORTS
(2020)
Article
Entomology
Joseph L. Spencer, Luis R. Orellana
JOURNAL OF APPLIED ENTOMOLOGY
(2020)
Article
Entomology
Adriano E. Pereira, Man P. Huynh, Amit Sethi, Ashley L. Miles, B. Wade French, Mark R. Ellersieck, Thomas A. Coudron, Kent S. Shelby, Bruce E. Hibbard
JOURNAL OF ECONOMIC ENTOMOLOGY
(2020)
Article
Agronomy
Kyle J. Paddock, Bruce E. Hibbard, Julie Barry, Amit Sethi, Ashley L. Mueller, Kent S. Shelby, Adriano E. Pereira
Summary: The susceptibility to Cry34/35Ab1 was restored within six generations in a Cry34/35Ab1-resistant WCR colony, indicating significant fitness costs associated with resistance. While larval fitness did not differ between resistant and susceptible colonies on isoline corn, beetles from susceptible colonies lived longer and produced significantly more eggs than resistant colonies, with no differences in egg fertility. This presence of a fitness cost may have a significant impact on the deployment of resistance management practices in WCR populations.
PEST MANAGEMENT SCIENCE
(2021)
Article
Entomology
Jinwon Kim, Ivan Hiltpold, Geoffrey Jaffuel, Ilham Sbaiti, Bruce E. Hibbard, Ted C. J. Turlings
Summary: Researchers have successfully developed solid Ca2+-alginate beads supplemented with glycerol to improve the retention and controlled release of entomopathogenic nematodes. The glycerol-induced metabolic arrest in the nematodes resulted in prolonging their storage life and ensuring steady release in soil. This innovative approach shows promise in effective application of EPN for the control of root-feeding insects.
JOURNAL OF PEST SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Kyle J. Paddock, Adriano E. Pereira, Deborah L. Finke, Aaron C. Ericsson, Bruce E. Hibbard, Kent S. Shelby
Summary: The response of western corn rootworms to Bt-expressing maize differed based on resistance status, with resistant insects showing a less rich and distinct bacterial community compared to susceptible insects. Feeding on Bt toxin-expressing seedlings caused a shift in the microbiota, indicating potential heritable changes induced as a result of intense selection. This study provides insight into the impact of stressors on microbiome composition and resistance mechanisms in insects.
Review
Entomology
Kyle J. Paddock, Christelle A. M. Robert, Matthias Erb, Bruce E. Hibbard
Summary: Over 90 million acres of US cropland are planted with corn annually, with the western corn rootworm causing significant economic damage and developing resistance to multiple management techniques. Further research is needed for new management tools to combat this major pest.
Article
Biochemistry & Molecular Biology
Z. Zhao, C. G. Elsik, B. E. Hibbard, K. S. Shelby
Summary: The study investigated the alternative splicing patterns in western corn rootworm and found that a high percentage of genes are alternatively spliced. Additionally, it suggested that alternatively spliced isoforms of peritrophic matrix protein may be associated with eCry3.1Ab resistance in western corn rootworm.
INSECT MOLECULAR BIOLOGY
(2021)
Article
Entomology
Adriano E. Pereira, Man P. Huynh, Alvar R. Carlson, Alexandra Haase, Robert M. Kennedy, Kent S. Shelby, Thomas A. Coudron, Bruce E. Hibbard
Summary: The western corn rootworm poses a serious threat to maize growers in the U.S. Corn Belt, with a need for new control strategies that are not cross-resistant with current insecticides and Bt proteins. Hv1a together with Cry3Bb1 may fit this role as a potential management tactic.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2021)
Article
Entomology
Joseph L. Spencer, Timothy R. Mabry, Eli Levine, Scott A. Isard
Summary: Research shows that the activity of rotation-resistant beetles in soybean is influenced by specific proteinases and an adapted gut microbiota, providing limited protection against soybean defenses. The impact of soybean and corn herbivory on rotation-resistant female survival and flight initiation was investigated through mortality assays and wind tunnel flight tests.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2021)
Article
Entomology
Kyle J. Paddock, Kyle Dellamano, Bruce E. Hibbard, Kent S. Shelby
Summary: Insect resistance to Bacillus thuringiensis (Bt) toxins is a major concern in agriculture, and resistance mechanisms include loss of toxin binding sites, changes in gut microbiota, and midgut tissue regeneration. This study provides histopathological evidence for the first time showing the morphological response of Bt-resistant and Bt-susceptible western corn rootworm larvae to Bt intoxication, shedding light on the multifaceted nature of Bt resistance in these insects.
JOURNAL OF ECONOMIC ENTOMOLOGY
(2023)
Article
Entomology
Adriano E. Pereira, Ryan W. Geisert, Bruce E. Hibbard
Summary: Breeding corn lines with natural resistance to western corn rootworm larvae could be a potential strategy for managing this economically damaging pest.
JOURNAL OF INSECT SCIENCE
(2022)
Article
Multidisciplinary Sciences
Zixiao Zhao, Lisa N. Meihls, Bruce E. Hibbard, Tieming Ji, Christine G. Elsik, Kent S. Shelby
SCIENTIFIC REPORTS
(2019)