Reproductive ecology of a parasitic plant differs by host species: vector interactions and the maintenance of host races

Reproductive ecology of a parasitic plant differs by host species: vector interactions and the maintenance of host races
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寄生植物的生殖生态因寄主物种而异:媒介相互作用和寄主种族的维持

DOI:
10.1007/s00442-017-4038-6
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发表时间:
2018
期刊:
影响因子:
2.7
通讯作者:
Bronstein, Judith L
Bronstein, Judith L
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
Yule, Kelsey M;Bronstein, Judith L

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寄生植物通常以独特的防御、生理和生态攻击多个宿主物种。生殖物候和寄生植物基因的载体(传粉者和传播者)可以促进或削弱感染不同宿主物种的种群的生殖隔离。我们问是否沙漠槲寄生,Phoradendron californicum(檀香科部落Visceae syn。槲寄生科),不同的生态在其占主导地位的豆科宿主的方式影响生殖隔离。寄生开花物候的一个主机种(天鹅绒牧豆树,牧豆)显着不同,从其他四个,和物候是不能预测的主机种物候或主机个人。比较槲寄生种群牧豆树和另一种常见的宿主物种(猫爪金合欢,Senegalia gregestival)的遗传上不同的主机种族是已知的,我们测试的差异与载体的相互作用,通过量化传粉者的访问,奖励生产,花粉接收,和水果消费。豆科灌木上的槲寄生每朵花比相思树上的槲寄生每朵花产生更多的传粉者奖励(花蜜的1.86倍和花粉的1.92倍),每朵花比相思树上的槲寄生多接收2粒花粉。寄生在两个主机种相互作用,不同的,但重叠的传粉者社区,传粉者类群不同的访问根据主机种。然而,这两种寄主的槲寄生都没有表现出更大的繁殖成功率。结果集(0.70)没有不同的主机,和水果成熟和去除率不同的对比方式。总之,我们估计强大的,但不对称的前合子隔离屏障槲寄生的两个主机。这些主机相关的生殖差异与互惠载体和人口遗传结构的相互作用的影响。
Parasitic plants often attack multiple host species with unique defenses, physiology, and ecology. Reproductive phenology and vectors of parasitic plant genes (pollinators and dispersers) can contribute to or erode reproductive isolation of populations infecting different host species. We asked whether desert mistletoe,Phoradendron californicum(Santalaceae tribe Visceae syn. Viscaceae), differs ecologically across its dominant leguminous hosts in ways affecting reproductive isolation. Parasite flowering phenology on one host species (velvet mesquite,Prosopis velutina) differed significantly from that on four others, and phenology was not predicted by host species phenology or host individual. Comparing mistletoe populations on mesquite and another common host species (catclaw acacia,Senegalia greggii) for which genetically distinct host races are known, we tested for differences in interactions with vectors by quantifying pollinator visitation, reward production, pollen receipt, and fruit consumption. Mistletoes on mesquite produced more pollinator rewards per flower (1.86 times the nectar and 1.92 times the pollen) and received ~ 2 more pollen grains per flower than those on acacia. Mistletoes on the two host species interacted with distinct but overlapping pollinator communities, and pollinator taxa differed in visitation according to host species. Yet, mistletoes of neither host showed uniformly greater reproductive success. Fruit set (0.70) did not differ by host, and the rates of fruit ripening and removal differed in contrasting ways. Altogether, we estimate strong but asymmetric pre-zygotic isolating barriers between mistletoes on the two hosts. These host-associated differences in reproduction have implications for interactions with mutualist vectors and population genetic structure.
两种非洲槲寄生的寄主利用模式:槲寄生与寄主相容性和鸟类传播行为的重要性
DOI: 10.1111/j.1365-2435.2005.01036.x
发表时间: 2005
期刊: Functional Ecology
影响因子: 5.2
作者:
L. Roxburgh;S. Nicolson
通讯作者: S. Nicolson
新西兰槲寄生(桑寄生)的爆炸性开花、花蜜生产、育种系统和传粉媒介
DOI: --
发表时间: 1997
期刊:
影响因子: --
作者:
J. J. Ladley;D. Kelly;A. Robertson
通讯作者: A. Robertson
沙漠槲寄生种子传播的生态学。
DOI: --
发表时间: 1991
期刊:
影响因子: --
作者:
D. Larson
通讯作者: D. Larson
槲寄生 (Phoradendron tomentosum) 宿主种族的实验证据
DOI: --
发表时间: 1985
期刊:
影响因子: --
作者:
K. Clay;D. Dement;M. Rejmánek
通讯作者: M. Rejmánek
寄生植物对寄主利用的限制
DOI: --
发表时间: 2010
期刊: Oecologia
影响因子: 2.7
作者:
Emily S. Marquardt;S. Pennings
通讯作者: S. Pennings