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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Wind-borne insects mediate directional pollen transfer between desert fig trees 160 kilometers apart
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Wind-borne insects mediate directional pollen transfer between desert fig trees 160 kilometers apart

机译：风传播昆虫介导相距160公里的沙漠无花果树之间的花粉定向转移

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摘要

The question of how far pollen can move between plants has implications for topics as diverse as habitat fragmentation, conservation management, and the containment of genetically modified crops. The monoecious African fig tree Ficus sycomorus L. relies on the small, short-lived, night-flying, host-specific fig wasp Ceratosolen arabicus Mayr for pollination. We used microsatellite markers to characterize a geographically isolated riparian population of F. sycomorus growing along the Ugab River in the Namib Desert, Namibia, together with paternity analysis of seedlings from known mothers, to map pollen movement within this population. In this way we tracked insect movements between individually recognizable trees by means of their pollen cargo and documented the movement of C. arabicus between known trees separated by more than 160 km, with a mean distance for confirmed successful pollination events of 88.6 km. The predominant observed movement of pollinators was in a westerly direction, toward the sea, reflecting seasonal nighttime wind direction and the wind-borne dispersal of fig wasps. Our results suggest the existence of an extensive panmictic population of trees that are well suited to overcome the effects of geographical isolation.
机译：花粉在植物之间可以移动多远的问题，对诸如栖息地破碎，保护管理和转基因农作物的控制等话题产生了影响。雌雄同株的非洲无花果树榕榕（Ficus sycomorus L.）依靠小，短命，夜空，寄主特有的无花果黄蜂Ceratosolen阿拉伯芥Mayr授粉。我们使用微卫星标记物来表征沿着纳米比亚纳米布沙漠的乌加布河生长的地理分离的河滨拟南芥的河岸种群，并对来自已知母亲的幼苗进行父系分析，以绘制该种群内花粉运动的图。通过这种方式，我们通过花粉货物追踪了可识别的树木之间的昆虫运动，并记录了相距超过160 km的已知树木之间的拟南芥的运动，确认成功授粉事件的平均距离为88.6 km。观察到的传粉媒介的主要活动方向是西风，朝着大海，反映了季节性的夜间风向和无花果黄蜂的风传播。我们的结果表明，存在大量的恐慌性树木种群，非常适合克服地理隔离的影响。

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  • 作者

    Sophia Ahmed; Stephen G. Compton; Roger K. Butlin; Philip M. Gilmartin;

  • 作者单位

    Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom INRA Bordeaux, UMR Sante Vegetale, La Grande Ferrade, BP 81, 33883 Villenave d'Ornon cedex, France;

    Institute of Integrative and Comparative Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom;

    Department of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, United Kingdom;

    Centre for Plant Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom School of Biological and Biomedical Sciences, Durham University, Durham DH1 3LE, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ficus sycomorus; fig wasp; gene flow; spatial structure; pollen dispersal;

    机译：榕肉瘤无花果黄蜂基因流空间结构花粉分散;

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