Geographic variation in primary sex allocation per flower within and among 12 species of <i>Pedicularis</i> (Orobanchaceae): Proportional male investment increases with elevation

Guo, Hui; Mazer, Susan J.; Du, Guozhen

doi:10.3732/ajb.0900301

Cited by 28 publications

(17 citation statements)

References 70 publications

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“…Species are coded as follows: A, P. cheilanthifolia; B, P. alaschanica; C, P. kansuensis; D, P. szetschuanica; E, P. curvituba; F, P. spicata; G, P. semitorta; H, P. chinensis; I, P. longiflora; J, P. cranolopha; K, P. armata; L, P. rhinanthoides primary floral allocation per flower and plant size at and above species level for our studied Pedicularis species. They are inconsistent with numerous previous studies (Klinkhamer et al 1997;Wright and Barrett 1999;Ashman et al 2001;Méndez and Traveset 2003;Zhao et al 2008) but in line with other studies (Mazer and Dawson 2001;Cao et al 2007;Guo et al 2010). Because of limited number of sampled species in each rewarding type in current study, we need to detect more extensive Pedicularis species to verify this pattern in future research.…”

Section: Elevation Plant Size and Variation Of Floral Allocation Persupporting

confidence: 49%

Primary floral allocation per flower in 12 Pedicularis (Orobanchaceae) species: significant effect of two distinct rewarding types for pollinators

Zhang

Wang

2011

J Plant Res

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For animal-pollinated hermaphrodite plants, the factors that affect floral allocation were usually assigned to extrinsic (environment) and intrinsic ones (resources status). Few studies focused on the effect of rewarding type of plants (pollen vs. nectar and pollen). In this study, we investigated the variation in floral allocation per flower with respect to two distinct rewarding types for pollinators in 12 Pedicularis species in alpine regions, testing for the effects of species, plant size, and elevation simultaneously. The result showed that the rewarding type affected floral allocation significantly, and there was a female-biased floral allocation pattern in nectarless rewarding species relative to nectar and pollen rewarding ones and provided a new insight into variation in floral allocation. It was discussed with respect to activities and foraging behavior of pollinators on the basis of sex allocation theory. Moreover, environmental conditions (elevation) may also play a relatively important role in determining patterns of variation in floral allocation per flower, whereas plant size may not.

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Section: Elevation Plant Size and Variation Of Floral Allocation Persupporting

confidence: 49%

Primary floral allocation per flower in 12 Pedicularis (Orobanchaceae) species: significant effect of two distinct rewarding types for pollinators

Zhang

Wang

2011

J Plant Res

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“…Interspecific variation in resource allocation to the primary female structure of flowers has previously been associated with intrinsic factors such as breeding systems (Cruden & Lyon ) and phylogeny‐dependent variation in flower size (Teixido et al ). Similar to our results, two independent studies have also reported the importance of climate conditions on the proportion of resource allocation per flower to female function, which decreased with elevation across 12 species of Pedicularis in an alpine habitat (Guo et al ; Zhang et al ). However, these studies are limited in that the effects of elevation on carpel allocation did not consider the history of divergence in the genus.…”

Section: Discussionsupporting

confidence: 91%

“…environmental conditions), have so far been little studied and deserve further attention. Two independent studies showed that increasing elevation and subsequent cooler temperatures were associated with more attractive and pollen‐rewarding, male‐biased flowers in 12 species of the hermaphroditic genus Pedicularis on the Tibetan Plateau (Guo et al ; Zhang et al ), likely due to relative scarcity of pollinators (see also Crowley et al for sex allocation patterns under pollen limitation). Likewise, a high reproductive effort by allocating a larger resource pool to seed production seems to be an effective strategy to deal with dry and hot conditions or nutrient‐poor soils (Lloyd & Bawa ; Aragón et al ; Chen et al ).…”

Section: Introductionmentioning

confidence: 99%

Heat and drought determine flower female allocation in a hermaphroditic Mediterranean plant family

Teixido

Valladares

2019

Plant Biol J

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In animal-pollinated hermaphroditic species, larger and xenogamous flowers increase male-biased resource allocation, whereas smaller and selfing flowers invest disproportionally more resources to female function. In Cistaceae, an entomophilous and hermaphroditic Mediterranean family, this pattern generally follows a phylogenetic signal. However, resource allocation to carpels is independent of phylogeny, which suggests trait divergences among closely related species during the diversification into different environmental conditions.• We tested this hypothesis across 37 species of Cistaceae along a temperature and precipitation gradient, including semiarid, dry, subhumid and humid sites. We quantified the proportions of dry mass and nutrient investment to carpels and tested the influence of the climatic gradient and site-specific precipitation on the interspecific variation in carpel resource allocation.• Lowest and highest percentages of resource allocation to carpels ranged from 1.5-4.2% to 24.2-36.6%, respectively. The proportion of resources comprised in carpels significantly decreased with increasing precipitation/decreasing temperature. Thus, carpels comprised proportionally more resources under drier and hotter conditions, especially in semiarid sites.• Our results demonstrate how the extent of climatic constraints is more important than phylogenetic relationships in determining stress-induced differences in carpel resource allocation across species of Cistaceae in a Mediterranean environment. We suggest that allocation of proportionally more resources to carpels in drier and hotter sites lies within a strategy to deal with the most stressful conditions by means of a high reproductive effort.

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“…rivularis in eastern parts of the QTP (Zhao et al, ; Guo et al, ). However, like resource allocation patterns, sexual allocation patterns may be affected by both biotic and abiotic factors (Kliber & Eckert, ; Buide, ; Zhao et al, ; Brookes et al, ; Guo et al, ; Liu & Huang, ; Zhang et al, ). For example, Zhang et al () showed that rewarding type (nectarless, nectar and pollen rewarding) can affect sexual allocation in Pedicularis species in the NE QTP.…”

Section: Resource Allocation Patterns Of Plants In the Qtpmentioning

confidence: 99%

Survival and reproduction of plant species in the Qinghai–Tibet Plateau

Sun

Yang

Chen

et al. 2014

J of Sytematics Evolution

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The Qinghai-Tibet Plateau (QTP) is the highest and largest plateau in the world. It covers correspondingly wide geological, topographical, and climatic gradients, and thus hosts greater biodiversity than surrounding lowlands and other high elevation regions. Due to its extreme environmental and biological diversity, the QTP is an ideal region for studying adaptations of plant species under harsh environmental conditions at multiple evolutionary levels. Many recent ecological studies have revealed functions of distinctive morphological features of various plants in the region that improve their reproductive success. Examples include large and showy bracts, hairy inflorescences, and drooping flowers. Numerous other investigations have examined QTP plants' sexual systems, patterns of biomass allocations, and biotic interactions. This paper summarizes recent advances in understanding of morphological adaptations, plantplant interactions, plant-pollinator interactions, floral color patterns, pollination adaptations, and resource allocation patterns of alpine plants of the QTP. The overall aim is to synthesize current knowledge of the general mechanisms of plant survival and reproduction in this fascinating region.

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Geographic variation in primary sex allocation per flower within and among 12 species of Pedicularis (Orobanchaceae): Proportional male investment increases with elevation

Cited by 28 publications

References 70 publications

Primary floral allocation per flower in 12 Pedicularis (Orobanchaceae) species: significant effect of two distinct rewarding types for pollinators

Primary floral allocation per flower in 12 Pedicularis (Orobanchaceae) species: significant effect of two distinct rewarding types for pollinators

Heat and drought determine flower female allocation in a hermaphroditic Mediterranean plant family

Survival and reproduction of plant species in the Qinghai–Tibet Plateau

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