caa a22 4500 445869747 CHVBK 20180317145508.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s11101-010-9194-9 doi (NATIONALLICENCE)springer-10.1007/s11101-010-9194-9 The effect of hybridization on secondary metabolites and herbivore resistance: implications for the evolution of chemical diversity in plants [Elektronische Daten] [Dandan Cheng, Klaas Vrieling, Peter Klinkhamer] The diversity of secondary metabolites (SMs) has been poorly understood from both a mechanistic and a functional perspective. Hybridization is suggested to contribute to the evolution of diversity of SMs. In this paper we discuss the effects of hybridization on SMs and herbivore resistance by evaluating the literature and with special reference to our own research results from the hybrids between Jacobaea vulgaris (syn. Senecio jacobaea) and Jacobaea aquatica (syn. Senecio aquaticus). We also review the possible genetic mechanism which causes the variation of SMs and herbivore resistance in hybrids. Most SMs in hybrids are present in the parents as well. But hybrids may miss some parental SMs or have novel SMs. The concentration of parental SMs in hybrids generally is constrained by that in parental plants, but transgressive expression was present in some hybrids. Hybrids may be as susceptible (resistant) as the parents or more susceptible than the parents, but rarely more resistant than the parents. However, different hybrid classes (F1, F2, backcrossing and mixed genotypes) show different patterns in relation to herbivore resistance. The variation in SMs and herbivore resistance occurring in hybrids could be explained by complicated genetic mechanisms rather than a simple one-gene model. Most previous work in this field only reported mean trait values for hybrid classes and few studies focused on genotype differences within hybrid classes. Our study in Jacobaea hybrids showed transgressive segregation in most SMs and herbivore resistance. To summarize, our article shows that hybridization may increase the variation of SMs and affect herbivore resistance, which may partially explain the evolution of chemical diversity in plants. The Author(s), 2010 Chemical defense nationallicence Pyrrolizidine alkaloids nationallicence Jacobaea vulgaris nationallicence Jacobaea aquatica nationallicence AFLP : Amplified fragment length polymorphism nationallicence BC : Backcrossing nationallicence dw : Dry weigh of plant material nationallicence PA : Pyrrolizidine alkaloid nationallicence QTL : Quantitative Trait Locus nationallicence SM : Secondary metabolite nationallicence Cheng Dandan Plant Ecology and Phytochemistry Section, Institute of Biology, Leiden University, Sylviusweg 72, 2300 RA, Leiden, The Netherlands aut Vrieling Klaas Plant Ecology and Phytochemistry Section, Institute of Biology, Leiden University, Sylviusweg 72, 2300 RA, Leiden, The Netherlands aut Klinkhamer Peter Plant Ecology and Phytochemistry Section, Institute of Biology, Leiden University, Sylviusweg 72, 2300 RA, Leiden, The Netherlands aut Phytochemistry Reviews Springer Netherlands 10/1(2011-03-01), 107-117 1568-7767 10:1<107 2011 10 11101 https://doi.org/10.1007/s11101-010-9194-9 text/html Onlinezugriff via DOI 1 review-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11101-010-9194-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cheng Dandan Plant Ecology and Phytochemistry Section, Institute of Biology, Leiden University, Sylviusweg 72, 2300 RA, Leiden, The Netherlands aut NATIONALLICENCE 700 1- Vrieling Klaas Plant Ecology and Phytochemistry Section, Institute of Biology, Leiden University, Sylviusweg 72, 2300 RA, Leiden, The Netherlands aut NATIONALLICENCE 700 1- Klinkhamer Peter Plant Ecology and Phytochemistry Section, Institute of Biology, Leiden University, Sylviusweg 72, 2300 RA, Leiden, The Netherlands aut NATIONALLICENCE 773 0- Phytochemistry Reviews Springer Netherlands 10/1(2011-03-01), 107-117 1568-7767 10:1<107 2011 10 11101 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer