干旱区生态环境知识资源中心(Arid): Pollinator assemblage and pollen load differences on sympatric diploid and tetraploid cytotypes of the desert-dominant Larrea tridentata

Arid

DOI	10.1002/ajb2.1605
	Pollinator assemblage and pollen load differences on sympatric diploid and tetraploid cytotypes of the desert-dominant Larrea tridentata
	Laport, Robert G.; Minckley, Robert L.; Pilson, Diana
通讯作者	Laport, RG (corresponding author), Rhodes Coll, Dept Biol, Memphis, TN 38112 USA.
来源期刊	AMERICAN JOURNAL OF BOTANY
ISSN	0002-9122
EISSN	1537-2197
出版年	2021
卷号	108 期号:2 页码:297-308
英文摘要	Premise Whole-genome duplication (polyploidy) is an important force shaping flowering-plant evolution. Ploidy-specific plant-pollinator interactions represent important community-level biotic interactions that can lead to nonrandom mating and the persistence of mixed-ploidy populations. Methods At a naturally occurring diploid-tetraploid contact zone of the autopolyploid desert shrub Larrea tridentata, we combined flower phenology analyses, collections of bees on plants of known cytotype, and flow cytometry analyses of bee-collected pollen loads to investigate whether (1) diploid and tetraploid plants have unique bee pollinator assemblages, (2) bee taxa exhibit ploidy-specific visitation and pollen collection biases, and (3) specialist and generalist bee taxa have ploidy-specific visitation and pollen collection biases. Results Although bee assemblages overlapped, we found significant differences in bee visitation to co-occurring diploids and tetraploids, with the introduced honeybee (Apis mellifera) and one native species (Andrena species 12) more frequently visiting tetraploids. Consistent with bee assemblage differences, we found that diploid pollen was overrepresented among pollen loads on native bees, while pollen loads on A. mellifera did not deviate from the random expectation. However, mismatches between the ploidy of pollen loads and plants were common, consistent with ongoing intercytotype gene flow. Conclusions Our data are consistent with cytotype-specific bee visitation and suggest that pollinator behavior contributes to reduced diploid-tetraploid mating. Differences in bee visitation and pollen movement potentially contribute to an easing of minority cytotype exclusion and the facilitation of cytotype co-occurrence.
英文关键词	cryptic biodiversity flow cytometry native bees plant– animal interactions polyploidy reproductive isolation Zygophyllaceae
类型	Article
语种	英语
开放获取类型	Green Published, Other Gold
收录类别	SCI-E
WOS记录号	WOS:000617488700001
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349433
作者单位	[Laport, Robert G.] Rhodes Coll, Dept Biol, Memphis, TN 38112 USA; [Minckley, Robert L.] Univ Rochester, Dept Biol, Rochester, NY 14627 USA; [Pilson, Diana] Univ Nebraska Lincoln, Sch Biol Sci, Lincoln, NE 68588 USA
推荐引用方式 GB/T 7714	Laport, Robert G.,Minckley, Robert L.,Pilson, Diana. Pollinator assemblage and pollen load differences on sympatric diploid and tetraploid cytotypes of the desert-dominant Larrea tridentata[J],2021,108(2):297-308.
APA	Laport, Robert G.,Minckley, Robert L.,&Pilson, Diana.(2021).Pollinator assemblage and pollen load differences on sympatric diploid and tetraploid cytotypes of the desert-dominant Larrea tridentata.AMERICAN JOURNAL OF BOTANY,108(2),297-308.
MLA	Laport, Robert G.,et al."Pollinator assemblage and pollen load differences on sympatric diploid and tetraploid cytotypes of the desert-dominant Larrea tridentata".AMERICAN JOURNAL OF BOTANY 108.2(2021):297-308.