Topics

Fighting on Two Fronts: Elevated Insect Resistance in Flooded Maize.

08:00 EDT 14th August 2019 | BioPortfolio

Summary of "Fighting on Two Fronts: Elevated Insect Resistance in Flooded Maize."

To grow and thrive plants must be able to adapt to both adverse environmental conditions and attack by a variety of pests. Elucidating the sophisticated mechanisms plants have developed to achieve this has been the focus of many studies. What is less well understood is how plants respond when faced with multiple stressors simultaneously. In this study we assess the response of Zea mays (maize) to the combinatorial stress of flooding and infestation with the insect pest Spodoptera frugiperda (fall armyworm). This combined stress leads to elevated production of the defense hormone salicylic acid, which does not occur in the individual stresses, and the resultant salicylic acid dependent increase in S. frugiperda resistance. Remodeling of phenylpropanoid pathways also occurs in response to this combinatorial stress leading to increased production of the anti-insect C-glycosyl flavones (maysins) and the herbivore induced volatile phenolics, benzyl acetate and phenethyl acetate. Furthermore, changes in cellular redox status also occur, as indicated by reductions in peroxidase and polyphenol oxidase activity. These data suggest that metabolite changes important for flooding tolerance and anti-insect defense may act both additively and synergistically to provide extra protection to the plant.

Affiliation

Journal Details

This article was published in the following journal.

Name: Plant, cell & environment
ISSN: 1365-3040
Pages:

Links

DeepDyve research library

PubMed Articles [9120 Associated PubMed Articles listed on BioPortfolio]

Field-evolved resistance of Helicoverpa zea (Boddie) to transgenic maize expressing pyramided Cry1A.105/Cry2Ab2 proteins in northeast Louisiana, the United States.

The corn earworm, Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), is a major target pest of pyramided Bt maize and cotton in the U.S. In 2017 and 2018, notable ear damage and larval survival of H. ...

Field-Evolved Resistance by Western Corn Rootworm to Cry34/35Ab1 and other Bacillus thuringiensis Traits in Transgenic Maize.

Transgenic crops producing insecticidal toxins from the bacterium Bacillus thuringiensis (Bt) are widely planted to manage agricultural insect pests. However, widespread adoption of Bt crops has led t...

Overexpression of the ZmDEF1 gene increases the resistance to weevil larvae in transgenic maize seeds.

Plant defensins are divided into 18 groups and are multifunctional proteins. The Zea mays defensin 1 (ZmDEF1) gene encodes the defensin 1 protein, which can inhibit alpha-amylase in the insect gut. In...

Transcriptome and differentially expressed genes of Busseola fusca (Lepidoptera: Noctuidae) larvae challenged with Cry1Ab toxin.

Busseola fusca (Fuller) (Lepidoptera: Noctuidae), a major insect pest of maize in sub-Saharan Africa, has developed high levels of non-recessive resistance to Cry1Ab toxin expressed in genetically mod...

RNA-Seq identification of candidate defense genes by analyzing Mythimna separata feeding-damage induced systemic resistance in Balsas teosinte.

Armyworm (Mythimna separata) is a destructive herbivore for maize. Balsas teosinte (Zea mays ssp. parviglumis), the direct wild ancestor of cultivated maize, has shown great potential to defend agains...

Clinical Trials [3514 Associated Clinical Trials listed on BioPortfolio]

Feasibility and Acceptability of a Soy-fiber-maize Complementary Food in Malawi.

The purpose of this intervention study is to assess the feasibility and acceptability of soy-fiber-maize versus soy-maize complementary foods on bowel movement frequency, transit time, gro...

Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status

The purpose of this randomized control trial is to test the impact of provitamin A carotenoid biofortified maize meal consumption on maternal and infant vitamin A status.

Effects of Hi-maize Resistant Starch on Insulin Sensitivity

The purpose of this study is to determine the effects of a dietary fiber, resistant starch, on insulin sensitivity. Low insulin sensitivity is a risk factor for some diseases including ty...

Comparison of Beta-cryptoxanthin Bioavailability From Biofortified Maize in Humans

The purpose of this study is to determine how well the body absorbs the carotenoid beta-cryptoxanthin (BCX) from a type of corn that has been naturally bred (not genetically engineered) to...

Determining the Complete Protection Time of an Insect Repellent With 30% Citriodiol® Against Three Species of Ticks.

This study evaluates the length of time an insect repellent product can protect against three species of ticks. Participants will have one arm treated with the repellent, and throughout th...

Medical and Biotech [MESH] Definitions

Free-standing or supported light weight meshwork fabric made of cotton, silk, polyester or other material having openings too small to allow entry of mosquitoes or other insects, thereby protecting against INSECT BITES; INSECT STINGS, and insect-borne diseases.

Devices or tools used in combat or fighting in order to kill or incapacitate.

Structures within the CELL NUCLEUS of insect cells containing DNA.

The genetic complement of an insect (INSECTS) as represented in its DNA.

A genus of insect in the mealybug family Pseudococcidae.

Quick Search


DeepDyve research library

Relevant Topics

Stress
Stress is caused by your perception of situations around you and then the reaction of your body to them. The automatic stress response to unexpected events is known as 'fight or flight'. Discovered by Walter Cannon in 1932, it is the release of h...

Mental Health
Adhd Anorexia Depression Dyslexia Mental Health Psychiatry Schizophrenia Stress Mental health, although not being as obvious as physical health, is very important, causing great unhappiness to those affected, causing add...

Endocrinology
Diabetes Diabetes Endocrine Disorders Obesity Oxycontin Renal Disease Thyroid Disorders Endocrinology is the study of the endocrine glands and the hormones that they secrete (Oxford Medical Dictionary). There are several g...


Searches Linking to this Article