Review
Agronomy
Akshara Bathini, Lavanya Mendu, Nagendra Pratap Singh, Jason Cook, David Weaver, Jamie Sherman, Megan Hager, Suchismita Mondal, Venugopal Mendu
Summary: This article discusses the damage and impact of wheat stem sawfly on wheat production, and the importance of breeding resistant varieties. To increase wheat productivity and achieve food security, it is necessary to understand the mechanisms of infestation and the response of host plants, and to explore effective methods of pest resistance.
Article
Agronomy
Maya Subedi, Hector A. Carcamo, Janet J. Knodel, David K. Weaver, Richard D. Cuthbert, Curtis J. Pozniak, Kirby T. Nilsen, Brian L. Beres
Summary: This study evaluated the plant responses of solid-stemmed and hollow-stemmed wheat genotypes across diverse environments and found that 'Choteau', 'BW925', and 'Mott' consistently displayed high and stable stem solidness along with high grain yield. These three genotypes also met the desired resistance threshold, with 'Mott' developing optimal pith at a critical phenological stage. Exploring the stability of stem solidness identified ideal genotypes for germplasm development efforts and will facilitate the selection, production, and adoption of solid-stemmed wheat cultivars in wheat stem sawfly-prone regions.
CANADIAN JOURNAL OF PLANT SCIENCE
(2021)
Article
Soil Science
Courtland Kelly, Michelle L. Haddix, Patrick F. Byrne, M. Francesca Cotrufo, Meagan M. Schipanski, Cynthia M. Kallenbach, Matthew D. Wallenstein, Steven J. Fonte
Summary: The study found that different wheat genotypes exhibited varying patterns of root C allocation, influencing nitrogen cycling. Thicker roots released more C into soil, enhancing nitrogen mineralization and microbial biomass, which in turn increased nitrogen cycling enzyme activity and residue nitrogen uptake by wheat. Microbial community structure was strongly correlated with root C allocation patterns, with certain genera showing strong relationships with root C deposition and nitrogen uptake.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Agronomy
Alireza Araghi, Christopher J. Martinez, Jorgen E. Olesen
Summary: This study assessed the accuracy of a gridded weather dataset called MSWX in modeling wheat performance in Iran. The results showed that MSWX temperature had higher accuracy than AgERA5, while MSWX solar radiation had weaker performance. It was found that MSWX temperature data could be the best replacement for measured temperature data in the study area.
EUROPEAN JOURNAL OF AGRONOMY
(2023)
Article
Agronomy
Dorota Gaweda, Malgorzata Haliniarz
Summary: The study found that planting winter wheat after soybean resulted in significantly higher grain and straw yield, as well as improved quality parameters compared to planting after winter oilseed rape. The tillage system did not have a significant impact on winter wheat grain yield, but conventional tillage system was beneficial for increasing straw yield and plant height, while the no-tillage system improved the thousand grain weight. Wheat grain harvested under conventional tillage system had better test weight, grain uniformity, and lower gluten index than under no-tillage.
Article
Agronomy
Na Zhang, Shengliang Yuan, Qi Zhang, Wenze Liu, Ying Zhou, Wenxiang Yang
Summary: This research evaluates the efficacy of several fungicides against Fusarium pseudograminearum in in vitro assays. The results show that fludioxonil is the most effective fungicide. Commercially available fungicides containing fludioxonil, difenoconazole, and tebuconazole also exhibit good control efficacy in pot and field assays. Additionally, seed dressing combined with spraying shows better control and higher grain yield for FCR.
Article
Plant Sciences
Liangjie Lv, Xiaorui Guo, Aiju Zhao, Yuping Liu, Hui Li, Xiyong Chen
Summary: This study reveals that the biosynthesis and accumulation of flavonoids play a crucial role in the defense mechanism of wheat kernels against maize weevils.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Haijun Qi, Xiuliang Zhu, Feilong Guo, Liangjie Lv, Zengyan Zhang
Summary: The study identified a wheat gene TaWAK7D that positively regulates the defense response to Rhizoctonia cerealis infection. TaWAK7D transcript abundance was elevated in wheat after R. cerealis inoculation, with the highest induction in the stem, and significantly elevated by pectin and chitin treatments. Knock-down of TaWAK7D transcript impaired resistance to R. cerealis and repressed the expression of pathogenesis-related genes in wheat.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Qiang Su, Wei Rong, Zengyan Zhang
Summary: A pathogen-induced MATE gene, TaPIMA1, was identified in wheat and found to be higher expressed in sharp eyespot-resistant wheat genotypes. Knock-down of TaPIMA1 impaired wheat resistance to sharp eyespot and down-regulated the expression of defense genes. TaPIMA1 was also found to play a crucial regulatory role in H2O2 and jasmonate signal pathways.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Agriculture, Multidisciplinary
Maude Langelier, Martin H. Chantigny, Denis Pageau, Anne Vanasse
Summary: Non-legume cover crops have a good ability to capture applied fertilizer N, while legume cover crops, especially clovers, have limited capacity. However, clover cover crops resulted in the largest increase in wheat yields in the following year.
AGRICULTURE ECOSYSTEMS & ENVIRONMENT
(2021)
Article
Soil Science
Ismail Ibrahim Garba, Graham R. Stirling, A. Marcelle Stirling, Alwyn Williams
Summary: Integrating diverse cover crops into dryland crop-fallow rotations can enhance soil nutrient and water retention, suppress soil-borne pests, and improve soil health. The effects on soil nematode communities are modulated by the functional type and mixture composition of the cover crops. Selecting cover crops with appropriate traits can improve soil health through suppression of plant-parasitic nematodes, promotion of free-living nematodes, and enhancement of soil food web complexity.
APPLIED SOIL ECOLOGY
(2024)
Article
Agronomy
Federico N. Spagnoletti, Marcelo Carmona, Karina Balestrasse, Viviana Chiocchio, Romina Giacometti, Raill S. Lavado
Summary: Root colonization with arbuscular mycorrhizal fungi enhances plant tolerance to soil-borne pathogens, with Rhizophagus intraradices showing significant biocontrol efficacy against Fusarium pseudograminearum in wheat plants.
Article
Biochemistry & Molecular Biology
Feng Xiong, Xiuliang Zhu, Changsha Luo, Zhixiang Liu, Zengyan Zhang
Summary: This study identified a cytosolic AACT-encoding gene, TaAACT1, in wheat and demonstrated its positive regulatory role in wheat defense against F. pseudograminearum. The transcript level of TaAACT1 was higher in FCR-resistant wheat genotypes compared to susceptible genotypes after infection. Knocking down of TaAACT1 impaired resistance against F. pseudograminearum and reduced the expression of defense genes in wheat. This research sheds light on the molecular mechanisms underlying wheat defense against FCR.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Agronomy
Huan Liu, Wei Xiong, Diego N. L. Pequeno, Ixchel M. Hernandez-Ochoa, Timothy J. Krupnik, Juan Burgueno, Yinlong Xu
Summary: Exploring the uncertainties of climate impact assessment is crucial. A simulation in China showed that by the 2050s, the median simulated yield change for wheat was between 4.5% - 5.5% under elevated CO2 concentrations, with higher uncertainty in national yield change compared to phenology change. Climate projections, crop models, and RCP scenarios accounted for over 70% of the total uncertainty, with crop models being the largest contributor to irrigated yield uncertainty. This study also highlighted the relationship between uncertainty and climate factors.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Plant Sciences
Rasha E. Mahdy, Dikhnah Ashehri, Hanan Ali Alatawi, Hadba Al-Amrah, Ezzat E. Mahdy
Summary: Two cycles of pedigree selection were conducted on grain yield/plant and grain weight in bread wheat under drought stress and normal irrigation, showing different heritability and gene associations under the two conditions.
Editorial Material
Forestry
Amy M. Trowbridge, Ken Keefover-Ring
Article
Agronomy
Dandan Wei, Jose D. Fuentes, Tobias Gerken, Marcelo Chamecki, Amy M. Trowbridg, Paul C. Stoy, Gabriel G. Katul, Gilberto Fisch, Otavio Acevedo, Antonio Manzi, Celso von Randow, Rosa Maria Nascimento dos Santo
AGRICULTURAL AND FOREST METEOROLOGY
(2018)
Article
Environmental Sciences
Emma T. Bode, Rick L. Lawrence, Scott L. Powell, Shannon L. Savage, Amy M. Trowbridge
JOURNAL OF APPLIED REMOTE SENSING
(2018)
Article
Environmental Sciences
Amy M. Trowbridge, Paul C. Stoy, Henry D. Adams, Darin J. Law, David D. Breshears, Detlev Helmig, Russell K. Monson
ENVIRONMENTAL RESEARCH LETTERS
(2019)
Article
Environmental Sciences
Dandan Wei, Jose D. Fuentes, Tobias Gerken, Amy M. Trowbridge, Paul C. Stoy, Marcelo Chamecki
ATMOSPHERIC ENVIRONMENT
(2019)
Article
Plant Sciences
Jianbei Huang, Markus Kautz, Amy M. Trowbridge, Almuth Hammerbacher, Kenneth F. Raffa, Henry D. Adams, Devin W. Goodsman, Chonggang Xu, Arjan J. H. Meddens, Dineshkumar Kandasamy, Jonathan Gershenzon, Rupert Seidl, Henrik Hartmann
Article
Ecology
Ryan B. Stephens, Amy M. Trowbridge, Andrew P. Ouimette, W. Berk Knighton, Erik A. Hobbie, Paul C. Stoy, Rebecca J. Rowe
Article
Environmental Sciences
A. M. Trowbridge, P. C. Stoy, R. P. Phillips
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2020)
Article
Forestry
Nickolas E. Kichas, Amy M. Trowbridge, Kenneth F. Raffa, Shealyn C. Malone, Sharon M. Hood, Richard G. Everett, David B. McWethy, Gregory T. Pederson
Summary: The study found no trade-off between tree growth and defense in whitebark and lodgepole pine, with differences in resin ducts and resin chemistry between the two species. Based on constitutive terpene profiles, mountain pine beetles are more likely to enter lodgepole pine but more likely to successfully elicit mass attacks in whitebark pine. Overstory competition may influence tree defenses and alter bark beetle-conifer interactions as host and nonhost species migrate in response to changing climate.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Ecology
Amy M. Trowbridge, Henry D. Adams, Adam Collins, Lee Turin Dickman, Charlotte Grossiord, Megan Hofland, Shealyn Malone, David K. Weaver, Sanna Sevanto, Paul C. Stoy, Nate G. McDowell
Summary: Heat and drought have synergistic effects on increasing monoterpene concentrations in mature pinon pines, while decreasing key monoterpenes that play important roles in bark beetle ecology. This highlights the complex and potentially detrimental impacts of combined stressors on plant chemical defenses.
Article
Agriculture, Multidisciplinary
Shealyn C. Malone, Fabian D. Menalled, David K. Weaver, Tim F. Seipel, Megan L. Hofland, Justin B. Runyon, Maryse Bourgault, Darrin L. Boss, Amy M. Trowbridge
Summary: Crops emit volatile organic compounds (VOCs) that attract or repel pests and their natural enemies. Different cropping systems can alter soil conditions, affecting crop VOC emissions, primarily driven by water availability.
RENEWABLE AGRICULTURE AND FOOD SYSTEMS
(2022)
Article
Plant Sciences
Drew M. P. Peltier, Mariah S. S. Carbone, Cameron D. D. McIntire, Nathan Robertson, R. Alex Thompson, Shealyn Malone, Jim LeMoine, Andrew D. D. Richardson, Nate G. G. McDowell, Henry D. D. Adams, William T. T. Pockman, Amy M. M. Trowbridge
Summary: Shifts in NSC age or turnover time may explain changes in tree growth under long-term drought stress associated with climate change. Quantifying NSC responses to drought is challenging due to large NSC stores in trees and long response times. Our results show that long-term drought reduces NSC age, leading to decreased growth and respiration rates in trees.
Article
Forestry
Shealyn C. Malone, Austin Simonpietri, Walter B. Knighton, Amy M. Trowbridge
Summary: This study investigates the impact of drought on the production and emission of volatile terpenes in ponderosa pine trees. It found that drought does not significantly affect the quantity of volatiles, but can alter their composition. When drought reaches a certain severity, it constrains the production of volatiles induced by herbivory. These findings reveal the influence of drought on the tree's defense response to herbivores and highlight the importance of considering drought severity in assessing its impact on herbivore-induced volatile emissions.
