Hillary D. Fischer
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View article: Not to be overlooked: dipeptides and their role in plant stress resilience
Not to be overlooked: dipeptides and their role in plant stress resilience Open
Dipeptides are structurally diverse small molecules with varying modes of biogenesis and function. In plants, dipeptides were historically associated with nitrogen storage and mobilization; however, they are also reported to act as antioxi…
View article: Acylsugars, Nicotine and a Protease Inhibitor Provide Variable Protection for <i>Nicotiana benthamiana</i> in a Natural Setting
Acylsugars, Nicotine and a Protease Inhibitor Provide Variable Protection for <i>Nicotiana benthamiana</i> in a Natural Setting Open
Plants produce an immense diversity of defensive specialized metabolites. However, despite extensive functional characterization, the relative importance of different defensive compounds is rarely examined in natural settings. Here, we com…
View article: Using protein–metabolite interactions to identify novel plant metabolite receptors
Using protein–metabolite interactions to identify novel plant metabolite receptors Open
An increasing interest in plant protein–metabolite interactions has occurred in the past decade due to advancements in technology and methodology. Metabolite receptors especially are of great importance in plant research due to their role …
View article: Knockout mutations of<i>Nicotiana benthamiana</i>defenses reveal the relative importance of acylsugars, nicotine, and a serine protease inhibitor in a natural setting
Knockout mutations of<i>Nicotiana benthamiana</i>defenses reveal the relative importance of acylsugars, nicotine, and a serine protease inhibitor in a natural setting Open
Summary Plants produce an immense diversity of defensive specialized metabolites. However, despite extensive functional characterization, the relative importance of different defensive compounds is rarely examined in natural settings. Here…
View article: Singlet oxygen signalling and its potential roles in plant biotic interactions
Singlet oxygen signalling and its potential roles in plant biotic interactions Open
Singlet oxygen (SO) is among the most potent reactive oxygen species, and readily oxidizes proteins, lipids and DNA. It can be generated at the plant surface by phototoxins in the epidermis, acting as a direct defense against pathogens and…
View article: Cardiac glycosides protect wormseed wallflower ( <i>Erysimum cheiranthoides</i> ) against some, but not all, glucosinolate‐adapted herbivores
Cardiac glycosides protect wormseed wallflower ( <i>Erysimum cheiranthoides</i> ) against some, but not all, glucosinolate‐adapted herbivores Open
Summary The chemical arms race between plants and insects is foundational to the generation and maintenance of biological diversity. We asked how the evolution of a novel defensive compound in an already well‐defended plant lineage impacts…
View article: Fun in the Sun: Singlet Oxygen Harnessing the Power of Light in Response to Biotic Stresses
Fun in the Sun: Singlet Oxygen Harnessing the Power of Light in Response to Biotic Stresses Open
Singlet Oxygen (SO) is among the most potent reactive oxygen species, and readily oxidizes proteins, lipids, and DNA. It can be generated at the plant surface by phototoxins in the epidermis, acting as a direct defense against pathogens an…
View article: Cardiac glycosides protect wormseed wallflower (<i>Erysimum cheiranthoides</i>) against some, but not all, glucosinolate-adapted herbivores
Cardiac glycosides protect wormseed wallflower (<i>Erysimum cheiranthoides</i>) against some, but not all, glucosinolate-adapted herbivores Open
SUMMARY The chemical arms race between plants and insects is foundational to the generation and maintenance of biological diversity. We asked how the evolution of a novel defensive compound in an already well-defended plant lineage impacts…
View article: Reversing the escape from herbivory: Knockout of cardiac glycoside biosynthesis in wormseed wallflower (Erysimum cheiranthoides L., Brassicaceae)
Reversing the escape from herbivory: Knockout of cardiac glycoside biosynthesis in wormseed wallflower (Erysimum cheiranthoides L., Brassicaceae) Open
Like other members of the Brassicaceae, plants in the wallflower genus (Erysimum) produce glucosinolates, which are potent defenses against a wide range of herbivores. As a more recently evolved second line of defense, Erysimum produces ca…
View article: Reactive Oxygen Species in Plant Interactions With Aphids
Reactive Oxygen Species in Plant Interactions With Aphids Open
Reactive oxygen species (ROS) such as hydrogen peroxide and superoxide are produced in plants in response to many biotic and abiotic stressors, and they can enhance stress adaptation in certain circumstances or mediate symptom development …
View article: Impact of loss‐of‐function of <i>FATTY ACID DESATURASE 7</i> in <i>Arabidopsis thaliana</i> on the green peach aphid, <i>Myzus persicae</i>, and the cabbage aphid, <i>Brevicoryne brassicae</i>
Impact of loss‐of‐function of <i>FATTY ACID DESATURASE 7</i> in <i>Arabidopsis thaliana</i> on the green peach aphid, <i>Myzus persicae</i>, and the cabbage aphid, <i>Brevicoryne brassicae</i> Open
The FATTY ACID DESATURASE 7 (FAD7) enzyme is widely conserved across many groups of plants and influences resistance to multiple stresses, including aphid infestation. In the model plant Arabidopsis thaliana (L.) Heynh. (Brassicaceae), a l…
View article: Redox responses of <i>Arabidopsis thaliana</i> to the green peach aphid, <i>Myzus persicae</i>
Redox responses of <i>Arabidopsis thaliana</i> to the green peach aphid, <i>Myzus persicae</i> Open
The green peach aphid ( Myzus persicae ) is a phloem‐feeding insect that causes economic damage on a wide array of crops. Using a luminol‐based assay, a superoxide‐responsive reporter gene ( Zat12::luciferase ), and a probe specific to hyd…
View article: The Influence of Singlet Oxygen and Loss of Function of Fatty Acid Desaturase 7 in the Chloroplast on Aphid Resistance in Arabidopsis thaliana
The Influence of Singlet Oxygen and Loss of Function of Fatty Acid Desaturase 7 in the Chloroplast on Aphid Resistance in Arabidopsis thaliana Open
Fatty Acid Desaturase 7 (FAD7) is a chloroplast-localized enzyme that alters the fatty acid content of photosynthetic membranes, and that negatively regulates plant defenses against aphids. Previous studies in the model organism Arabidopsi…
View article: Economic Injury Levels for Aphis glycines Matsumura (Hemiptera: Aphididae) on the Soybean Aphid Tolerant KS4202 Soybean
Economic Injury Levels for Aphis glycines Matsumura (Hemiptera: Aphididae) on the Soybean Aphid Tolerant KS4202 Soybean Open
The soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), is an invasive species from Asia that has been the major economic insect pest of soybeans, Glycine max (L.) Merrill, since 2000. While use of soybeans expressing antibiosi…