Resistance Mechanisms Against Arthropod Herbivores in Cotton and Their Interactions with Natural Enemies

Hagenbucher, Steffen; Olson, D. G.; Ruberson, John R.; Wäckers, Félix; Romeis, Jörg

doi:10.1080/07352689.2013.809293

Cited by 78 publications

(104 citation statements)

References 258 publications

Supporting

Mentioning

102

Contrasting

Unclassified

Order By: Relevance

“…This corresponds with the growth stage at which aphids start to colonize cotton in the southern USA [2]. Plants were infested with one third instar of H. virescens or were left uninfested.…”

Section: Materials and Methods (A) Plants And Insectsmentioning

confidence: 99%

“…Terpenoid content (gossypol, hemigossypolone, heliocides 1 þ 4, heliocides 2 þ 3) was analysed by HPLC using the protocol established in Hagenbucher et al [5]. The heliocides 1 and 4 as well as the heliocides 2 and 3 are stereoisomers of each other and could not be analysed separately [2]. Sample size for plant material was 8 -10 mg (dry weight) per plant, whereas for aphids, it ranged from 4 to 12 mg, which represented the aphid population of a single plant.…”

Section: Materials and Methods (A) Plants And Insectsmentioning

confidence: 99%

“…gossypol, hemigossypolone and the heliocides 1-4 [1,2]. Production of these compounds is systemically induced by tissue-feeding herbivores [1,2], but not by aphids and other phloem-feeding herbivores [3].…”

Section: Introductionmentioning

confidence: 99%

“…Production of these compounds is systemically induced by tissue-feeding herbivores [1,2], but not by aphids and other phloem-feeding herbivores [3]. Phloem-feeders are, however, affected by cotton terpenoids [2]. Cotton thus provides an excellent model to study indirect interaction webs that include non-trophic, indirect links among organisms that contribute to the structure of multi-trophic food webs [4].…”

Section: Introductionmentioning

confidence: 99%

“…Here, we assess the effects of caterpillar-induced resistance in Bt and non-Bt cotton on higher trophic levels, represented by the aphid parasitoid Lysiphlebus testaceipes. Aphis gossypii is causing economic losses in cotton in the USA [2] and L. testaceipes is one of the principal parasitoids associated with this pest [6].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Indirect multi-trophic interactions mediated by induced plant resistance: impact of caterpillar feeding on aphid parasitoids

2014

View full text Add to dashboard Cite

Cotton produces insecticidal terpenoids that are induced by tissue-feeding herbivores. Damage by Heliothis virescens caterpillars increases the terpenoid content, which reduces the abundance of aphids. This effect is not evident in Bt-transgenic cotton, which is resistant to H. virescens. We determined whether induction of terpenoids by caterpillars influences the host quality of Aphis gossypii for the parasitoid Lysiphlebus testaceipes and whether this interaction is influenced by Bt cotton. The exposure of parasitoids to terpenoids was determined by quantifying terpenoids in the aphids. We detected several terpenoids in aphids and found a positive relationship between their concentrations in plants and aphids. When L. testaceipes was allowed to parasitize aphids on Bt and non-Bt cotton that was infested or uninfested with H. virescens, fewer parasitoid mummies were found on infested non-Bt than on Bt cotton. Important parasitoid life-table parameters, however, were not influenced by induced resistance following H. virescens infestation, or the Bt trait. Our study provides an example of a tritrophic indirect interaction web, where organisms are indirectly linked through changes in plant metabolites.

show abstract

Section: Materials and Methods (A) Plants And Insectsmentioning

confidence: 99%

Section: Materials and Methods (A) Plants And Insectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Indirect multi-trophic interactions mediated by induced plant resistance: impact of caterpillar feeding on aphid parasitoids

2014

View full text Add to dashboard Cite

show abstract

Bottom‐up control of geographic variation in insect herbivory on wild cotton (Gossypium hirsutum) by plant defenses and climate

Abdala‐Roberts

Quijano‐Medina

Moreira

et al. 2019

American J of Botany

View full text Add to dashboard Cite

Premise of study: It has long been recognized that the occurrence and impact of herbivory is shaped by bottom-up forces, primarily plant traits (e.g. defenses) as well as by abiotic factors. Addressing these concurrent effects under a spatial context has been useful in efforts to understand the mechanisms governing variation in plant-herbivore interactions.Still, few studies have evaluated the simultaneous influence of different sources of bottomup variation on spatial variation in herbivory. Methods:We tested to what extent plant chemical (phenolics, gossypol glands) and physical (pubescence) defensive traits and climatic factors are associated with variation in herbivory by leaf-chewing insects among populations of wild cotton (Gossypium hirsutum).Key results: We found substantial variation among cotton populations in leaf defenses and insect leaf herbivory. Leaf pubescence (trichome density), but not gossypol gland density or phenolic content, was significantly negatively associated with herbivory by leaf-chewing insects. In addition, there were direct effects of climate on defenses and herbivory, with leaf pubescence increasing towards drier conditions and leaf damage increasing towards wetter and cooler conditions. There was no evidence, however, of indirect effects (via plant defenses) of climate on herbivory.Conclusions: Spatial variation in insect herbivory on wild G. hirsutum appears to be predominantly driven by concurrent and independent influences of population variation in leaf pubescence and climatic factors.

show abstract

Dirigierende Proteine aus Baumwolle (Gossypium sp.) für die atropselektive Synthese von Gossypol

Effenberger

Bin

et al. 2015

Angewandte Chemie

View full text Add to dashboard Cite

Gossypol dient der Abwehr von Schädlingen und Pathogenen in Baumwollpflanzen. Seine Biosynthese umfasst die oxidative Kupplung von Hemigossypol, die zu zwei Atropisomeren führt. In vivo dominiert (+)‐Gossypol, was auf eine stereochemisch kontrollierte Biosynthese schließen lässt. Ziel dieser Studie waren die Identifizierung der Faktoren für die Bildung von (+)‐Gossypol sowie die Untersuchung ihres Potenzials für die Synthese asymmetrischer Biaryle. Die Kupplung von Hemigossypol mit Laccase und O2 als Oxidationsmittel in Gegenwart eines dirigierenden Proteins (DIR) von Gossypium hirsutum (GhDIR4) verläuft atropselektiv. (+)‐Gossypol wurde mit >80 % ee erhalten, während in Abwesenheit von GhDIR4 nur racemisches Gossypol entstand. Die Identifizierung von GhDIR4 unterstreicht die Bedeutung von DIRs im Sekundärstoffwechsel von Pflanzen und könnte ein erster Schritt zur Entwicklung von DIRs für die Synthese axial‐chiraler Binaphthyle sein.

show abstract

Resistance Mechanisms Against Arthropod Herbivores in Cotton and Their Interactions with Natural Enemies

Cited by 78 publications

References 258 publications

Indirect multi-trophic interactions mediated by induced plant resistance: impact of caterpillar feeding on aphid parasitoids

Indirect multi-trophic interactions mediated by induced plant resistance: impact of caterpillar feeding on aphid parasitoids

Bottom‐up control of geographic variation in insect herbivory on wild cotton (Gossypium hirsutum) by plant defenses and climate

Dirigierende Proteine aus Baumwolle (Gossypium sp.) für die atropselektive Synthese von Gossypol

Contact Info

Product

Resources

About