Title: Pyrrolizidine alkaloid variation in Jacobaea hybrids : influence on resistance against generalist and specialist insect herbivores
نویسندگان
چکیده
منابع مشابه
Natural hybridization between Senecio jacobaea and Senecio aquaticus: molecular and chemical evidence.
Hybridization is known to be involved in a number of evolutionary processes, including species formation, and the generation of novel defence characteristics in plants. The genus Senecio of the Asteraceae family is highly speciose and has historically demonstrated significant levels of interspecific hybridization. The evolution of novel chemical defence characteristics may have contributed to t...
متن کاملMapping of QTL for Resistance against the Crucifer Specialist Herbivore Pieris brassicae in a New Arabidopsis Inbred Line Population, Da(1)-12×Ei-2
BACKGROUND In Arabidopsis thaliana and other crucifers, the glucosinolate-myrosinase system contributes to resistance against herbivory by generalist insects. As yet, it is unclear how crucifers defend themselves against crucifer-specialist insect herbivores. METHODOLOGY/PRINCIPAL FINDINGS We analyzed natural variation for resistance against two crucifer specialist lepidopteran herbivores, Pi...
متن کاملInteractions between Plant Metabolites Affect Herbivores: A Study with Pyrrolizidine Alkaloids and Chlorogenic Acid
The high structural diversity of plant metabolites suggests that interactions among them should be common. We investigated the effects of single metabolites and combinations of plant metabolites on insect herbivores. In particular we studied the interacting effects of pyrrolizidine alkaloid (PAs), and chlorogenic acid (CGA), on a generalist herbivore, Frankliniella occidentalis. We studied both...
متن کاملFactors Influencing Pyrroliz Id Ine (senecio) Alkaloid Metabolism: Species, Liver Sulfhydryls and Rumen Fermentation 1
The metabolism in vitro of pyrrolizidine alkaloids by microsomes from eight animal species was studied. The rates of pyrrole production ranged from high to low in the following order: male hamster > male rabbit > male mouse > male rat > beef steer > beef bull female rat > wether lamb > male chicken male Japanese quail. With the exception of the rabbit and chicken, there appeared to be a direct ...
متن کاملSpecificity of induced resistance in wild radish: causes and consequences for two specialist and two generalist caterpillars
Inducible plant resistance against herbivores is becoming a paradigm of plant–herbivore ecology. Fundamental to understanding induced resistance and its evolutionary ecology is specificity of ‘‘induction’’ and ‘‘effects’’. Specificity in the induction of resistance refers to whether plant damage by various herbivores causes the same response in plants. Specificity in the effects of induced resi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2012