論文 - 詳細
| RRC ID | 61749 |
|---|---|
| 著者 | De La Pascua DR, Smith-Winterscheidt C, Dowell JA, Goolsby EW, Mason CM. |
| タイトル | Evolutionary trade-offs in the chemical defense of floral and fruit tissues across genus Cornus. |
| ジャーナル | Am J Bot |
| Abstract |
PREMISE:Defense investment in plant reproductive structures is relatively understudied compared to the defense of vegetative organs. Here the evolution of chemical defenses in reproductive structures is examined in light of the optimal defense, apparency, and resource availability hypotheses within the genus Cornus using a phylogenetic comparative approach in relation to phenology and native habitat environmental data. METHODS:Individuals representing 25 Cornus species were tracked for reproductive phenology over a full growing season at the Arnold Arboretum of Harvard University. Floral, fruit, and leaf tissue was sampled to quantify defensive chemistry as well as fruit nutritional traits relevant to bird dispersal. Native habitat environmental characteristics were estimated using locality data from digitized herbarium records coupled with global soil and climate data sets. RESULTS:The evolution of later flowering was correlated with increased floral tannins, and the evolution of later fruiting was correlated with increased total phenolics. Leaves were found to contain the highest tannin activity, while inflorescences contained the highest total flavonoids. Multiple aspects of fruit defensive chemistry were correlated with fruit nutritional traits. Floral and fruit defensive chemistry were evolutionarily correlated with aspects of native habitat temperature, precipitation, and soil characteristics. CONCLUSIONS:Results provide tentative support for the apparency hypothesis with respect to both flower and fruit phenology, while relative concentrations of secondary metabolites across organs provide mixed support for the optimal defense hypothesis. The evolution of reproductive defense with native habitat provides, at best, mixed support for the resource availability hypothesis. |
| 巻・号 | 107(9) |
| ページ | 1260-1273 |
| 公開日 | 2020-9-28 |
| DOI | 10.1002/ajb2.1540 |
| PMID | 32984956 |
| MeSH | Animals Cornus* Flowers Fruit Inflorescence Phylogeny Plant Leaves |
| IF | 3.038 |
| リソース情報 | |
| GBIF | Plant Specimen Database of Tama Forest Science Garden, Forestry and Forest Products Research Institute, Japan Vascular plant specimens of Akita Prefectural Museum Vascular plants database of Atsugi City Museum Herbarium, University Archives and Collections, Fukushima University, Japan (FKSE) Angiospermatatophytina Collection of Saitama Museum of Natural History Vascular plant specimens of Iida City Museum Plant specimens of Oiso Municipal Museum Vascular Plant Collection of Natural History Museum and Institute, Chiba Herbarium Specimens of Museum of Nature and Human Activities, Hyogo Pref., Japan Spermatophyta collection of Museum of Natural and Environmental History, Shizuoka Ibaraki Nature Museum, Vascular Plants collection Plant Specimens of Kurashiki Museum of Natural History Herbarium Specimens of Tokushima Prefectural Museum, Japan Herbarium of Kitakyushu Museum of Natural History and Human History Plant Specimens of Lake Biwa Museum Spermatophyta specimens of Iwate Prefectural Museum Vascular Plants Collection of Sagamihara City Museum Plant specimens in the Museum of Nature and Human Activities, Hyogo Prefecture, Japan Plant specimens deposited in Osaka Museum of Natural History, Japan Vascular Plant Specimens of Kochi Prefectural Makino Botanical Garden Plant Specimens of The Shimane Nature Museum of Mt. Sanbe Vascular Plant Specimen database of Kanagawa Prefectural Museum of Natural History Gunma Museum of Natural History, Vascular Plant Specimen Vascular plants collection of Hiratsuka City Museum Herbarium Specimens of Bonin and Ryukyu Islands Tracheophyta collection of Biodiversity Center of Japan, Ministry of the Environment |