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Transgenerational impacts of herbivory and inbreeding on reproductive output in Solanum carolinense.
Nihranz, Chad T; Walker, William S; Brown, Steven J; Mescher, Mark C; De Moraes, Consuelo M; Stephenson, Andrew G.
Affiliation
  • Nihranz CT; Intercollege Graduate Program in Ecology, Pennsylvania State University, University Park, PA, 16802, USA.
  • Walker WS; Department of Biology, Pennsylvania State University, University Park, PA, 16802, USA.
  • Brown SJ; Department of Biology, Pennsylvania State University, University Park, PA, 16802, USA.
  • Mescher MC; Department of Biology, Pennsylvania State University, University Park, PA, 16802, USA.
  • De Moraes CM; Department of Environmental Systems Science, Swiss Federal Institute of Technology (ETH Zurich), CH-8092, Zurich, Switzerland.
  • Stephenson AG; Department of Environmental Systems Science, Swiss Federal Institute of Technology (ETH Zurich), CH-8092, Zurich, Switzerland.
Am J Bot ; 107(2): 286-297, 2020 02.
Article in En | MEDLINE | ID: mdl-31944272
PREMISE: Plant maternal effects on offspring phenotypes are well documented. However, little is known about how herbivory on maternal plants affects offspring fitness. Furthermore, while inbreeding is known to reduce plant reproductive output, previous studies have not explored whether and how such effects may extend across generations. Here, we addressed the transgenerational consequences of herbivory and maternal plant inbreeding on the reproduction of Solanum carolinense offspring. METHODS: Manduca sexta caterpillars were used to inflict weekly damage on inbred and outbred S. carolinense maternal plants. Cross-pollinations were performed by hand to produce seed from herbivore-damaged outbred plants, herbivore-damaged inbred plants, undamaged outbred plants, and undamaged inbred plants. The resulting seeds were grown in the greenhouse to assess emergence rate and flower production in the absence of herbivores. We also grew offspring in the field to examine reproductive output under natural conditions. RESULTS: We found transgenerational effects of herbivory and maternal plant inbreeding on seedling emergence and reproductive output. Offspring of herbivore-damaged plants had greater emergence, flowered earlier, and produced more flowers and seeds than offspring of undamaged plants. Offspring of outbred maternal plants also had greater seedling emergence and reproductive output than offspring of inbred maternal plants, even though all offspring were outbred. Moreover, the effects of maternal plant inbreeding were more severe when plant offspring were grown in field conditions. CONCLUSIONS: This study demonstrates that both herbivory and inbreeding have fitness consequences that extend across generations even in outbred progeny.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Manduca / Solanum Limits: Animals Language: En Journal: Am J Bot Year: 2020 Document type: Article

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Manduca / Solanum Limits: Animals Language: En Journal: Am J Bot Year: 2020 Document type: Article