Estudios sistemáticos en &lt;i&gt;Turnera&lt;/i&gt; (Turneraceae). III. Series &lt;i&gt;Anomalae&lt;/i&gt; y &lt;i&gt;Turnera&lt;/i&gt;

Arbo, María Mercedes

doi:10.30972/bon.143-41382

Cited by 39 publications

(56 citation statements)

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“…var. coerulea , all of which occur at both diploid and autotetraploid levels (Fernández, 1987; Shore, 1991a,b; Truyens et al ., 2005) while distylous Turnera fernandezii is an auto‐octaploid (Fernández, 1987; Arbo, 2005; Table 1). Five subspecies occur within the T. sidoides L. complex (series Leiocarpae , x = 7).…”

Section: Polyploidy and Breeding Systemsmentioning

confidence: 99%

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Breeding system variation, genetics and evolution in the Turneraceae

2006

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We review the genetics and evolution of breeding systems in the Turneraceae. Distyly occurs in seven of 10 genera and 81% of species. The remaining species are homostylous. Polyploid evolution has been significant in Turnera . Approximately 60% of species are polyploid ranging from diploid through decaploid. No relationship between breeding system and polyploidy is evident. The genetics of distyly involves a one-locus two-allele system ( S and s). Evidence from crosses with homostylous species and mutants is consistent with the possibility that a ' Primula -type' supergene underlies distyly but does not prove this to be the case. A polygalacturonase, and an α -dioxygenase specific to the transmitting tissue of short-styled plants both exhibit morph-limited expression in concert with predictions from an evolutionary model. The function of the proteins in distyly, if any, is unknown. We have begun constructing a fine-scale genetic map of Turnera . Two genetic markers lie within 0.2 c M of the distyly locus. This should provide a starting point for positional cloning of the distyly locus and reveal the genetic architecture and molecular basis of distyly.New Phytologist (2006) 171: 539-551

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Section: Polyploidy and Breeding Systemsmentioning

confidence: 99%

“…Is there, however, a tendency for homostyly to evolve preferentially in polyploids? Within series Turnera there are 29 species and/or subspecific taxa (Arbo, 2005). Eight of these are homostylous polyploid species (six hexaploids and two octaploids).…”

Section: Polyploidy and Breeding Systemsmentioning

confidence: 99%

Breeding system variation, genetics and evolution in the Turneraceae

2006

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“…This study was conducted on stabilized sand dunes at CICOLMA nature reserve located in the Gulf of Mexico. Turnera velutina (Passifloraceae) is a Mexican endemic, perennial shrub (Arbo ) bearing entomophilous, bisexual, self‐compatible flowers that last 1 day (Benitez‐Vieyra et al . ).…”

Section: Results Of the Generalized Linear Mixed Models Of The Effectmentioning

confidence: 97%

Why are flowers sweeter than fruits or buds? Variation in extrafloral nectar secretion throughout the floral ontogeny of a myrmecophile

Villamil

2017

Biotropica

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“…Field experiments were conducted in coastal sand scrub at Troncones, Guerrero, on the southern Pacific coastline of Mexico (17°47’ N, 101° 44’ W, elevation < 50 m). Turnera velutina (Passifloraceae) is a Mexican endemic shrub (Cuautle & Rico-Gray 2003; Arbo 2005) that establishes a facultative mutuaalism with 10 ants species in Troncones (Zedillo-Avelleyra 2017) rewarding them with extrafloral nectar (Villamil et al 2013). Turnera velutina is a self-compatible, herkogamous species that requires pollinators for seed production (Sosenski et al 2016).…”

Section: Methodsmentioning

confidence: 99%

Ant guards influence the mating system of their plant hosts by altering pollinator behaviour

Villamil

Boege

Stone

2020

Preprint

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31Ant guards can increase plant fitness by deterring herbivores but may also 32 reduce it by interfering with pollination, hence ant-plant interactions are ideal 33 systems in which to study costs and benefits of mutualisms. While ant impacts 34 on herbivory are well-studied, much less is known about impacts on 35 pollinators and associated consequences for plant mating systems and fitness. 36 We used field experiments to quantify the effect of ant guards on pollinator 37 community composition, frequency and duration of flower visits, and 38 cascading effects on plant mating system and plant fitness in Turnera velutina 39 (Passifloraceae). Although ant patrolling did not affect pollinator community 40 composition or visitation frequency, it decreased pollinator foraging time and 41 flower visit duration. Such behavioural changes resulted in reduced pollen 42 deposition on stigmas, decreasing male fitness whilst increasing outcrossing 43 rates. This study contributes to understanding how non-pollinators, such as 44 these defensive mutualists, can shape plant mating systems.45 46 87 tested. Alternatively, an increase in fruit set in ant-patrolled plants of 88 Psycothria limonensis was attributed to pollinator relocation, where ant 89 threats might have caused pollinators to spend less time per flower and visit 90 5 more flowers, promoting pollen transfer (Altshuler 1999). Again, this 91 mechanism was inferred, but not experimentally tested. Previous experiments 92 on Turnera velutina showed that ant corpses placed inside flowers reduce 93 pollinator visit duration (Villamil et al. 2018). However, such an experimental 94 setup may differ from natural circumstances as flower occupation by ants is a 95 rare event, and live ants (in contrast to dead ones) do not remain immobile in 96 the flowers for long periods. Overall, the presence of ants can promote 97 changes in pollinator community composition, visit frequency and duration. 98 This, in turn, could drive positive or negative impacts of ant-pollinator 99 interactions on plant reproduction (Altshuler 1999; Ness 2006). To date, no 100 study has quantified the impacts of ant patrolling on pollinator visitation 101 behaviour, plant mating systems, and fitness under natural conditions. 102 We estimated the ecological and potential evolutionary consequences 103 of myrmecophily on the pollination biology, mating system, and fitness of 104 Turnera velutina (Passifloraceae), a self-compatible ant-plant using an ant 105 exclusion field experiment. We addressed the following questions: (i) What is 106 the effect of ant patrolling on pollinator visitation? (pollinator community 107 composition, visitation frequency, duration, and behaviour) (ii) Does ant 108 patrolling affect the host plant mating system? (iii) Does ant patrolling affect 109 pollen transfer dynamics? (iv) Does ant patrolling affect plant male fitness? 110 First, because smaller or solitary pollinator taxa are expected to be more 111 vulnerable to predation risk than larger or social species (Dukas & ...

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Estudios sistemáticos en <i>Turnera</i> (Turneraceae). III. Series <i>Anomalae</i> y <i>Turnera</i>

Cited by 39 publications

References 0 publications

Breeding system variation, genetics and evolution in the Turneraceae

Breeding system variation, genetics and evolution in the Turneraceae

Why are flowers sweeter than fruits or buds? Variation in extrafloral nectar secretion throughout the floral ontogeny of a myrmecophile

Ant guards influence the mating system of their plant hosts by altering pollinator behaviour

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