Asymmetric Effects of Loss and Gain of a Floral Trait on Pollinator Preference

Dell'Olivo, Alexandre; Kuhlemeier, Cris (2013). Asymmetric Effects of Loss and Gain of a Floral Trait on Pollinator Preference. Evolution, 67(10), pp. 3023-3031. Hoboken, N.J.: Wiley 10.1111/evo.12178

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Shifts in pollination syndromes involve coordinated changes in multiple floral traits. This raises the question of how plants can cope with rapid changes in pollinator availability by the slow process of accumulation of mutations in multiple genes. Here we study the transition from bee to hawkmoth pollination in the genus Petunia. Interspecific crosses followed by single locus introgressions were used to recreate putative intermediate evolutionary stages in the evolution of moth pollination. The effect of the loss/gain of petal color was asymmetric: it had no influence on the established pollinator but enhanced visitation by the new pollinator. Therefore, shifts in pollination syndromes may proceed through intermediate stages of reduced specialization and consequently enhanced reproductive assurance. The loss of petal color in moth-pollinated Petunia involves null mutations in a single regulatory gene, An2. Such simple genetic changes may be sufficiently rapid and frequent to ensure survival during pollinator failure.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Plant Development

UniBE Contributor:

Dell'Olivo, Alexandre and Kuhlemeier, Cris

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0014-3820

Publisher:

Wiley

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

06 Nov 2013 14:58

Last Modified:

09 Jan 2015 16:19

Publisher DOI:

10.1111/evo.12178

Related URLs:

PubMed ID:

24094351

Uncontrolled Keywords:

Flower color, molecular evolution, near isogenic lines, plant–insect interactions, pollinator preference, transcription factor AN2

BORIS DOI:

10.7892/boris.38652

URI:

https://boris.unibe.ch/id/eprint/38652

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