Methyl acetate, a highly volatile floral semiochemical mediating specialized plant-beetle interactions

Maia, Artur Campos Dália; Navarro, Daniela Maria do Amaral Ferraz; Núñez‐Avellaneda, Luis Alberto; Carreño-Barrera, Javier; Iannuzzi, Luciana; Cardona-Duque, Juliana; Nantes, Wesley Arruda Gimenes

doi:10.1007/s00114-021-01731-3

Cited by 6 publications

(4 citation statements)

References 39 publications

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“…Similarly, in Polyalthia (Annonaceae), a fruity odor is produced during anthesis (Ratnayake et al 2006). In Elaeis guineensis (Arecaceae), anthesis is correlated with the production of estragol (Lajis et al 1985), while in Attalea phalerata (Arecaceae), weevils and other beetle pollinators are attracted by a strong emission of methyl acetate (Maia et al 2021). In Macrozamia and Zamia (Zamiaceae) the emission of linalool or methyl salicylate has been recorded (Toon et al 2020;Salzman et al 2021).…”

Section: Plant Traitsmentioning

confidence: 99%

Most diverse, most neglected: weevils (Coleoptera: Curculionoidea) are ubiquitous specialized brood-site pollinators of tropical flora

Haran¹,

Kergoat²,

Medeiros³

2023

Peer Community Journal

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In tropical environments, and especially tropical rainforests, a major part of pollination services is provided by diverse insect lineages. Unbeknownst to most, beetles, and more specifically hyperdiverse weevils (Coleoptera: Curculionoidea), play a substantial role there as specialized mutualist brood pollinators. The latter contrasts with a common view where they are only regarded as plant antagonists. This study aims to provide a comprehensive understanding of what is known about plant-weevil brood-site mutualistic interactions, through a review of the known behavioral, morphological and physiological features found in these systems, and the identification of potential knowledge gaps. To date, plant-weevil associations have been described or indicated in no less than 600 instances. Representatives of major plant lineages are involved in these interactions, which have emerged independently at least a dozen times. Strikingly, these mutualistic interactions are associated with a range of convergent traits in plants and weevils. Plants engaged in weevil-mediated pollination are generally of typical cantharophilous type exhibiting large, white and fragrant flowers or inflorescences and they also show specific structures to host the larval stages of their specialist pollinators. Another characteristic feature is that flowers often perform thermogenesis and exhibit a range of strategies to separate sexual phases, either spatially or temporally. Conversely, lineages of brood-site weevil pollinators present numerous shared behavioral and physiological traits, and often form multispecific assemblages of closely related species on a single host; recent studies also revealed that they generally display a high degree of phylogenetic niche conservatism. This pollination mutualism occurs in all tropical regions, and the contrasts between the known and expected diversity of these systems suggests that a wide range of interactions remain to be described globally. Our early estimates of the species richness of the corresponding weevil clades and the marked pattern of phylogenetic niche conservatism of host use further suggest that weevil-based pollination far exceeds the diversity of other brood-site mutualistic systems, which are generally restricted to one or a few groups of plants. As such, weevil pollinators constitute a relevant model to explore the emergence and evolution of specialized brood-site pollination systems in the tropics.

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Section: Plant Traitsmentioning

confidence: 99%

Most diverse, most neglected: weevils (Coleoptera: Curculionoidea) are ubiquitous specialized brood-site pollinators of tropical flora

Haran¹,

Kergoat²,

Medeiros³

2023

Peer Community Journal

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“…; Curculionidae). 239 Finally, some recent studies focused only on orivorous beetles and identied the oral attractants. The (3S)-isomer of (E)-nerolidol (113) mediated the attraction of orivorous Cyclocephala paraguayensis beetles to bottle gourd (Lagenaria siceraria, Cucurbitaceae) owers, 240 and 2-isopropyl-3-methoxypyrazine ( 143) and 2-isobutyl-3methoxypyrazine (159), major compounds of Acrocomia and Attalea palms, attracted Cyclocephala amazona and C. distincta orivores.…”

Section: Beetlesmentioning

confidence: 99%

“…For each diastereomer two enantiomers are possible, summing up to a total of four stereoisomers of carvone epoxide (239)(240)(241)(242). All ve orchid species recently studied for the presence of the stereoisomers of carvone epoxide released only the (−)-(E)-isomer (239). In Eulaema bees, this enantiomer elicited the highest antennal responses and was the most attractive.…”

Section: Reviewmentioning

confidence: 99%

“…331 The plants mainly release (E)-carvone epoxides, though some also release smaller amounts of the (Z)-isomers (summarized by Brandt et al 364 ). For each diastereomer two enantiomers are possible, summing up to a total of four stereoisomers of carvone epoxide (239)(240)(241)(242). All ve orchid species recently studied for the presence of the stereoisomers of carvone epoxide released only the (−)-(E)-isomer (239).…”

Section: Repelling Orivoresmentioning

confidence: 99%

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Chemistry, biosynthesis and biology of floral volatiles: roles in pollination and other functions

Dötterl,

Gershenzon

2023

Nat. Prod. Rep.

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The sweet path of Hansel and Gretel: pollination system of Masdevallia hortensis (Orchidaceae: Pleurothallidinae) in a cloud montane forest of the Cordillera Occidental, in Colombia

Ospina-M,

Sanín,

Maia

et al. 2024

Plant Syst Evol

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Pollination by deception is assumed as the general rule among pleurothallid orchids. However, considering the exceptional diversity of this group (44 genera and over 5100 species) and the relatively limited number of available studies (pollination ecology has been assessed in only 17 genera), generalized trends about their pollination systems might disregard a wide variety of specific life-history traits and inconspicuous honest signals/rewards for pollinators. The few known associations of pleurothallid orchids with a large assortment of fly taxa further support the assumption of generalized pollination by deception. We investigated the natural pollination system of Masdevallia hortensis, a strictly endemic species of cloud forests in the Western Andes of Colombia. This species exhibited a sophisticated and unique pollination mechanism, producing sugary secretions in the lateral sepals along purple dotted patches, fed upon by different visiting species of fruit flies (Drosophilidae). The sucrose concentration in these secretions varied throughout the day and significantly decreased after pollinaria removal. Visiting fruit flies appeared to be guided towards a chamber between the mobile lip and the column, by dotted lines in the lateral sepals. During visitations, individuals of the most abundant species in our observations (Drosophila sp. 1) were singly entrapped in the chamber until eventually freeing themselves with the pollinaria attached to their bodies. We also demonstrated that M. hortensis is strictly self-incompatible, which makes fly pollination an essential process for the maintenance of natural populations of the species. The flowers of M. hortensis offer rewards for visiting insects, an aspect that should be thoroughly evaluated before making generalizations. In this way, we urge integrative ecological studies to understand the reproductive evolutionary patterns in this group of orchids.

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Methyl acetate, a highly volatile floral semiochemical mediating specialized plant-beetle interactions

Cited by 6 publications

References 39 publications

Most diverse, most neglected: weevils (Coleoptera: Curculionoidea) are ubiquitous specialized brood-site pollinators of tropical flora

Most diverse, most neglected: weevils (Coleoptera: Curculionoidea) are ubiquitous specialized brood-site pollinators of tropical flora

Chemistry, biosynthesis and biology of floral volatiles: roles in pollination and other functions

The sweet path of Hansel and Gretel: pollination system of Masdevallia hortensis (Orchidaceae: Pleurothallidinae) in a cloud montane forest of the Cordillera Occidental, in Colombia

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