Variation in pollen-donor composition among pollinators in an entomophilous tree species, Castanea crenata, revealed by single-pollen genotyping.
Variation in pollen-donor composition among pollinators in an entomophilous tree species, Castanea crenata, revealed by single-pollen genotyping.
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DOI：
10.1371/journal.pone.0120393
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发表时间：
2015
期刊：
影响因子：
3.7
通讯作者：
Seiwa K
中科院分区：
文献类型：
--
作者：
Hasegawa Y;Suyama Y;Seiwa K
在植物中，繁殖成功很大程度上取决于由于传粉媒介觅食行为（例如花粉残留）而运输的花粉成分（即自花花粉和来自近处和远处花粉供体的异花花粉）。然而，关于花粉残留如何以及在多大程度上影响花粉供体组成以及在田间条件下哪些昆虫类群是有效的异花花粉转运者，目前还没有证据。在这项研究中，我们探讨了昆虫传粉者的觅食行为对花粉供体组成和木本植物随后繁殖成功的作用。我们基于对造访栗树的昼间传粉者（即大黄蜂、小蜜蜂、苍蝇、小甲虫和蜜蜂）发现的单个花粉粒的微卫星基因分型进行了亲子关系分析。熊蜂的异交花粉率最高（66%），其次是小蜜蜂（35%）、苍蝇（31%）和小甲虫（18%）。代表花粉残留的花粉供体有效数量，大黄蜂 (9.71) 高于苍蝇 (3.40)、小蜜蜂 (3.32) 和小甲虫 (3.06)。与小蜜蜂（35.3%）和小甲虫（13.5%）相比，大黄蜂（65.4%）和苍蝇（71.2%）来自地块外的花粉比例较高，这表明它们的花粉传播距离更长。所有昼行昆虫都通过花粉携带物将花粉粒长距离传播。这一事实表明，多种昆虫类群是自交不亲和的 C. crenata 的潜在异花花粉转运者。
In plants, reproductive success is largely determined by the composition of pollen (i.e., self-pollen and outcross-pollen from near and distant pollen-donors) transported as a result of pollinator foraging behavior (e.g., pollen carryover). However, little evidence is available on how and to what extent the pollen carryover affects the pollen-donor composition and on which insect taxa are effective outcross-pollen transporters under field conditions. In this study, we explored roles of foraging behavior of insect pollinators on pollen-donor composition and subsequent reproductive success in a woody plant. We performed paternity analyses based on microsatellite genotyping of individual pollen grains found on diurnal pollinators (i.e., bumblebee, small bee, fly, small beetle, and honeybee) visiting Castanea crenata trees. The outcross-pollen rate was highest in bumblebees (66%), followed by small bees (35%), flies (31%), and small beetles (18%). The effective number of pollen donors, representing pollen carryover, was greater in bumblebees (9.71) than in flies (3.40), small bees (3.32), and small beetles (3.06). The high percentages of pollen from outside the plot on bumblebees (65.4%) and flies (71.2%) compared to small bees (35.3%) and small beetles (13.5%) demonstrated their longer pollen dispersal distances. All of the diurnal insects carried outcross-pollen grains for long distances via pollen carryover. This fact suggests that a wide range of insect taxa are potential outcross-pollen transporters for the self-incompatible C. crenata.
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影响因子：
3.8
作者：
Kamm, U.;Rotach, P.;Holderegger, R.
通讯作者：
Holderegger, R.
DOI：
10.1098/rspb.2005.3069
发表时间：
2005-06-22
影响因子：
4.7
作者：
Cozzolino, S;Schiestl, FP;Widmer, A
通讯作者：
Widmer, A
影响因子：
5.7
作者：
Chifflet, Remy;Klein, Etienne K.;Vaissiere, Bernard E.
通讯作者：
Vaissiere, Bernard E.
影响因子：
3.3
作者：
Herlihy, CR;Eckert, CG
通讯作者：
Eckert, CG
影响因子：
3
作者：
DUDASH, MR;RITLAND, K
通讯作者：
RITLAND, K