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- W2889932051 abstract "Resource allocation to offspring is the battleground for various intrafamilial conflicts. Understanding these conflicts requires knowledge of how the different actors (mother, siblings with different paternal genotypes) influence resource allocation. In angiosperms, allocation of resources to seeds happens postfertilization, and the paternally inherited genome in offspring can therefore influence resource allocation. However, the precise mode of resource allocation—and, in particular, the occurrence of sibling rivalry—has rarely been investigated in plants. In this article, we develop a new method for analyzing the resource-allocation traits of the different actors (maternal sporophyte and half-sibs) using data obtained from a large-scale diallel cross experiment in maize involving mixed hand pollination and color markers to assess seed weight of known paternity. We found strong evidence for the occurrence of sibling rivalry: resources invested in an ear were allocated competitively, and offspring with different paternal genotypes aggressively competed for these resources, entailing a measurable direct cost to the mother. We also show how resource allocation can be described for each genotype by two maternal traits (source effect, average sink responsiveness) and two offspring traits (ability to attract maternal resources, competitive ability toward siblings). We will discuss how these findings help to understand how genetic conflicts shape resource-allocation traits in angiosperms." @default.
- W2889932051 created "2018-09-27" @default.
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- W2889932051 date "2018-11-01" @default.
- W2889932051 modified "2023-10-14" @default.
- W2889932051 title "Dividing a Maternal Pie among Half-Sibs: Genetic Conflicts and the Control of Resource Allocation to Seeds in Maize" @default.
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- W2889932051 doi "https://doi.org/10.1086/699653" @default.
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