The bracts of the alpine 'glasshouse' plant Rheum alexandrae (Polygonaceae) enhance reproductive fitness of its pollinating seed-consuming mutualist
Song,Bo; Stoecklin,Juerg; Peng,Deli; Gao,Yongqian; Sun,Hang
2015-10-01
Source PublicationBOTANICAL JOURNAL OF THE LINNEAN SOCIETY
Volume179Issue:2Pages:349-359
Abstract

Environmental conditions are known to affect the reproductive fitness of insects, as do host plants. Although the highly specialized bracts of Himalayan 'glasshouse' plants are thought to be an adaptive morphology that allows the plant to reproduce in harsh alpine environments, little information appears to exist concerning the benefit of these bracts for the pollinating insects. In this study, we examine whether the semi-translucent bracts of Rheum alexandrae, a giant herb endemic to the alpine zone of the Hengduan Mountains in south-western China, enhance the reproductive fitness of its pollinator. Rheum alexandrae depends mainly on mutualistic seed-consuming Bradysia flies for pollination. Bracts increased interior temperature on sunny days, acted as a buffer against fluctuating air humidity, greatly decreased the intensities of ultraviolet B/C radiation and provided shelter from strong winds. Bract removal significantly decreased adult oviposition and offspring performance of pollinators during flowering and fruiting, respectively. Our results indicate that the bracts of R. alexandrae enhance the reproductive fitness of its pollinating seed-consuming mutualist in alpine environments, which may be attributed to the positive effects of the bracts on the interior microenvironment. (C) 2015 The Linnean Society of London.

KeywordInsect Activity Mutualism Offspring Performance Oviposition Pollination
DOI10.1111/boj.12312
Indexed BySCI
Language英语
WOS IDWOS:000362773800011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/25185
Collection中国科学院东亚植物多样性与生物地理学重点实验室
Recommended Citation
GB/T 7714
Song,Bo,Stoecklin,Juerg,Peng,Deli,et al. The bracts of the alpine 'glasshouse' plant Rheum alexandrae (Polygonaceae) enhance reproductive fitness of its pollinating seed-consuming mutualist[J]. BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2015,179(2):349-359.
APA Song,Bo,Stoecklin,Juerg,Peng,Deli,Gao,Yongqian,&Sun,Hang.(2015).The bracts of the alpine 'glasshouse' plant Rheum alexandrae (Polygonaceae) enhance reproductive fitness of its pollinating seed-consuming mutualist.BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,179(2),349-359.
MLA Song,Bo,et al."The bracts of the alpine 'glasshouse' plant Rheum alexandrae (Polygonaceae) enhance reproductive fitness of its pollinating seed-consuming mutualist".BOTANICAL JOURNAL OF THE LINNEAN SOCIETY 179.2(2015):349-359.
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