The dynamics of resource allocation and costs of reproduction in a sexually dimorphic, wind-pollinated dioecious plant

Z. Teitel, M. Pickup, D. Field, S. Barrett, Plant Biology 18 (2016) 98–103.

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Journal Article | Published | English

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Author
Teitel, Zachary; Pickup, MelindaIST Austria ; Field, DavidIST Austria ; Barrett, Spencer
Department
Abstract
Sexual dimorphism in resource allocation is expected to change during the life cycle of dioecious plants because of temporal differences between the sexes in reproductive investment. Given the potential for sex-specific differences in reproductive costs, resource availability may contribute to variation in reproductive allocation in females and males. Here, we used Rumex hastatulus, a dioecious, wind-pollinated annual plant, to investigate whether sexual dimorphism varies with life-history stage and nutrient availability, and determine whether allocation patterns differ depending on reproductive commitment. To examine if the costs of reproduction varied between the sexes, reproduction was either allowed or prevented through bud removal, and biomass allocation was measured at maturity. In a second experiment to assess variation in sexual dimorphism across the life cycle, and whether this varied with resource availability, plants were grown in high and low nutrients and allocation to roots, aboveground vegetative growth and reproduction were measured at three developmental stages. Males prevented from reproducing compensated with increased above- and belowground allocation to a much larger degree than females, suggesting that male reproductive costs reduce vegetative growth. The proportional allocation to roots, reproductive structures and aboveground vegetative growth varied between the sexes and among life-cycle stages, but not with nutrient treatment. Females allocated proportionally more resources to roots than males at peak flowering, but this pattern was reversed at reproductive maturity under low-nutrient conditions. Our study illustrates the importance of temporal dynamics in sex-specific resource allocation and provides support for high male reproductive costs in wind-pollinated plants.
Publishing Year
Date Published
2016-01-01
Journal Title
Plant Biology
Volume
18
Issue
1
Page
98 - 103
IST-REx-ID

Cite this

Teitel Z, Pickup M, Field D, Barrett S. The dynamics of resource allocation and costs of reproduction in a sexually dimorphic, wind-pollinated dioecious plant. Plant Biology. 2016;18(1):98-103. doi:10.1111/plb.12336
Teitel, Z., Pickup, M., Field, D., & Barrett, S. (2016). The dynamics of resource allocation and costs of reproduction in a sexually dimorphic, wind-pollinated dioecious plant. Plant Biology, 18(1), 98–103. https://doi.org/10.1111/plb.12336
Teitel, Zachary, Melinda Pickup, David Field, and Spencer Barrett. “The Dynamics of Resource Allocation and Costs of Reproduction in a Sexually Dimorphic, Wind-Pollinated Dioecious Plant.” Plant Biology 18, no. 1 (2016): 98–103. https://doi.org/10.1111/plb.12336.
Z. Teitel, M. Pickup, D. Field, and S. Barrett, “The dynamics of resource allocation and costs of reproduction in a sexually dimorphic, wind-pollinated dioecious plant,” Plant Biology, vol. 18, no. 1, pp. 98–103, 2016.
Teitel Z, Pickup M, Field D, Barrett S. 2016. The dynamics of resource allocation and costs of reproduction in a sexually dimorphic, wind-pollinated dioecious plant. Plant Biology. 18(1), 98–103.
Teitel, Zachary, et al. “The Dynamics of Resource Allocation and Costs of Reproduction in a Sexually Dimorphic, Wind-Pollinated Dioecious Plant.” Plant Biology, vol. 18, no. 1, Wiley-Blackwell, 2016, pp. 98–103, doi:10.1111/plb.12336.

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