Shifting from acquisitive to conservative: the effects of Phoradendron affine (Santalaceae) infection in leaf morpho-physiological traits of a Neotropical tree species
| Autor: | Marina Corrêa Scalon, Davi Rodrigo Rossatto, Sabrina Alves dos Reis |
|---|---|
| Přispěvatelé: | Universidade de Brasília (UnB), Universidade Estadual Paulista (Unesp) |
| Rok vydání: | 2017 |
| Předmět: |
leaf traits
0106 biological sciences Specific leaf area biology Santalaceae Host (biology) fungi leaf morphology Xylem Bignoniaceae Plant Science biology.organism_classification hemiparasite 010603 evolutionary biology 01 natural sciences leaf water potential Petiole (botany) resource use Botany Handroanthus chrysotrichus Phoradendron Ecology Evolution Behavior and Systematics 010606 plant biology & botany |
| Zdroj: | Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 0067-1924 |
| DOI: | 10.1071/bt16177 |
| Popis: | Made available in DSpace on 2018-11-28T04:17:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-01-01 Pro-Reitoria de Pesquisa (PROPE-UNESP) Mistletoes are parasitic plants that penetrate the host branches through a modified root and connect to their xylem to acquire nutrients and water. Under mistletoe infection, resources that would otherwise be used by the host are stolen by the parasite. Our aim was to compare leaf morpho-physiological traits between healthy uninfected branches and mistletoe-infected branches of a Neotropical tree species (Handroanthus chrysotrichus (Mart. ex DC.) Mattos - Bignoniaceae). We also investigated differences between mistletoe and host leaf traits. Morphological (petiole length and thickness, leaf area and thickness, and specific leaf area) and physiological leaf traits (pre-dawn and midday water potential) were measured in 10 individuals infected with the mistletoe Phoradendron affine (Pohl ex DC.) Engl. & K.Krause (Santalaceae). Mistletoes showed smaller and thicker leaves with lower pre-dawn and midday water potential, suggesting that mistletoes are more profligate water users than the host. Host leaves from infected branches were scleromorphic and showed stronger water-use control (less negative water potential) than host leaves from uninfected branches. Our results indicated that leaves from infected branches shifted to a more conservative resource-use strategy as a response to a water and nutrient imbalance caused by mistletoe infection. Univ Brasilia, Inst Ciencias Biol, Dept Ecol, Caixa Postal 04457, BR-70904970 Brasilia, DF, Brazil Univ Estadual Paulista, Dept Biol, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donatto Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil Univ Estadual Paulista, Dept Biol, Fac Ciencias Agr & Vet, Via Acesso Prof Paulo Donatto Castellane S-N, BR-14884900 Jaboticabal, SP, Brazil Pro-Reitoria de Pesquisa (PROPE-UNESP): PIBIC/UNESP/PROPE-33198 |
| Databáze: | OpenAIRE |
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