The Determination of the Allelopathic Potential of Pollen and Nectar

Murphy, Stephen D.

doi:10.1007/978-3-662-02783-7_14

Cited by 10 publications

(9 citation statements)

References 64 publications

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“…Waser, 1978a;Kephart, 1983;Campbell and Motten, 1985;Galen and Gregory, 1989;Jennersten and Kwak, 1991). The more exact mechanistic effects of interspecific pollen transfer were elucidated in a number of cases (Thomson et al, 1981;Waser and Fugate, 1986;Feinsinger et al, 1988;Feinsinger and Tiebout, 1991;Murphy, 1992;Murcia and Feinsinger, 1996; see the recent review by Morales and Traveset, 2008). A finding of competition was far from universal, however: a number of studies detected no effect of plant species on each others' reproductive success (e.g.…”

Section: Setting the Stage: A Brief Historymentioning

confidence: 99%

New frontiers in competition for pollination

et al. 2009

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Competition for pollination has served as a model for the integration of ecological and evolutionary perspectives in the study of species interactions. Its study has elucidated both obvious and more subtle mechanisms, and has documented a range of outcomes. However, the potential for this interaction to inform our understanding of both pure and applied aspects of pollination biology has only begun to be realized.

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Section: Setting the Stage: A Brief Historymentioning

confidence: 99%

New frontiers in competition for pollination

et al. 2009

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“…On the other hand, the lack of a pronounced periodicity of stigma receptivity may be disadvantageous for a wind-pollinated species because alien pollen can be deposited during the absence of domestic pollen that would otherwise effect fertilization. Stigma clogging (Lloyd and Webb 1986) and alien pollen allelopathy (Murphy 1992) suggest themselves.…”

Section: Discussionmentioning

confidence: 99%

Explosive pollen release, stigma receptivity, and pollen dispersal pattern ofBoehmeria caudataSw. (Urticaceae) in a Brazilian rain forest

Montoya-Pfeiffer

Kevan

González‐Chaves

et al. 2016

Botany

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Male flowers of the wind-pollinated, dioecious shrub Boehmeria caudata Sw. release pollen explosively, possibly stimulated by anther dehydration in response to temporarily dry conditions coupled with hydrostatic pressure in the filament. In the Brazilian Atlantic rain forest, the daily frequency of male flower anthesis peaked between 1000–1200 h (GMT −3) and was positively correlated with rising temperature, wind currents, and direct insolation, but negatively correlated with relative humidity. A generalized linear mixed model predicts the probability of pollen release under different conditions of relative humidity and wind. Receptive stigmas on female flowers were found at any time of day: individual stigmas were receptive (H2O2 test) for at least two days. Beetles and halictid bees were observed feeding on pollen from staminate flowers, but probably did not affect pollination because they did not seem to visit pistillate flowers. Individual plants of this apparently ruderal species grow along road edges and show aggregated (clumped) spatial dispersion. The overall sex ratio we found was 29 females to 43 males, with one monoecious plant in a total transect distance of 6319 m. Pollen traps were placed on the female plants to measure pollen arrival. Pollen capture was higher on the more exposed road-facing side and positively related to male plant density.

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“…that may lead to the antagonistic or favorable effects on the pollen germination. Pollen allelopathy plays major role in normal plant fertilization in biocenosis (Murphy 1992(Murphy , 1999Gaur et al 2007). Studies reported the stimulatory or inhibitory effect of pollens mixture from different species, e.g., Lilium, Tulipa, Narcissus, Corylus avellana, Linaria vulgaris, Papaver somniferum, etc.…”

Section: Direct Cell-cell Contacts At Pollen-pollen Interactionmentioning

confidence: 99%

Microscopy for Modeling of Cell–Cell Allelopathic Interactions

et al. 2012

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The application of various microscopy methods-from stereomicroscopy to luminescence microscopy, microspectrofluorimetry and laser-scanning confocal microscopy-has been considered as an approach to model the cell-cell contacts and interactions in allelopathy. It bases on the direct observations of both secretions released from allelopathic species and the interaction(s) with the cell acceptors as biosensors (unicellular plant generative and vegetative microspores). Special attention was paid to the interactions with pigmented and fluorescing components of the secretions released by the cell donors from allelopathically active plant species. Colored allelochemicals are considered as histochemical dyes for the analysis of cellular mechanisms at the allelopathic contacts. IntroductionThe study of cell-cell interactions in allelopathy has been achieved using various types of microscopic methods as has been shown for analysis of pollen-pollen interactions analyzed by microspectrofluorimetry Melnikova 1996, 1999) or laser-scanning confocal microscopy (Roshchina et al. 2007(Roshchina et al. , 2009a. The technique may be suitable for the investigation of allelopathic mechanisms when one cell (a donor cell) releases a molecule that is received by another cell (an acceptor cell) belonging to different species. For this aim it should consider the microscopy for the observation of plant cell, viz.

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The Determination of the Allelopathic Potential of Pollen and Nectar

Cited by 10 publications

References 64 publications

New frontiers in competition for pollination

New frontiers in competition for pollination

Explosive pollen release, stigma receptivity, and pollen dispersal pattern ofBoehmeria caudataSw. (Urticaceae) in a Brazilian rain forest

Microscopy for Modeling of Cell–Cell Allelopathic Interactions

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