Response of Pollen Germination and Tube Growth to Cadmium with Special Reference to Low Concentration Exposure

Xiong, Zhuang; Peng, Yonghua

doi:10.1006/eesa.2000.2002

Cited by 47 publications

(33 citation statements)

References 26 publications

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“…Duke et al 2006;Calabrese et al 2007;Kendig et al 2010). Examples for hormesis-type responses from plant biology include the herbicide glyphosate, which at low doses can stimulate crop growth (Duke et al 2006;Velini et al 2008), lowdose stimulation of pollen germination and tube growth by cadmium (Xiong and Peng 2001), as well as the promotion of Arabidopsis hypocotyl growth by low-dose treatment with the plant hormone ethylene, which at higher doses inhibits growth (Pierik et al 2006). Allelochemicals, including monoterpenes, produced by donor plants are proposed to mediate growth responses of target plants, but very little is known about the underlying mechanisms (Inderjit and Duke 2003).…”

Section: Discussionmentioning

confidence: 99%

Dose- and tissue-specific interaction of monoterpenes with the gibberellin-mediated release of potato tuber bud dormancy, sprout growth and induction of α-amylases and β-amylases

Rentzsch

Podzimska

Voegele

et al. 2011

Planta

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Gibberellins (GA) are involved in bud dormancy release in several species. We show here that GA-treatment released bud dormancy, initiated bud sprouting and promoted sprout growth of excised potato tuber bud discs ('eyes'). Monoterpenes from peppermint oil (PMO) and S-(+)-carvone (CAR) interact with the GA-mediated bud dormancy release in a hormesis-type response: low monoterpene concentrations enhance dormancy release and the initiation of bud sprouting, whereas high concentrations inhibit it. PMO and CAR did, however, not affect sprout growth rate after its onset. We further show that GA-induced dormancy release is associated with tissue-specific regulation of α- and β-amylases. Molecular phylogenetic analysis shows that potato α-amylases cluster into two distinct groups: α-AMY1 and α-AMY2. GA-treatment induced transcript accumulation of members of both α-amylase groups, as well as α- and β-amylase enzyme activity in sprout and 'sub-eye' tissues. In sprouts, CAR interacts with the GA-mediated accumulation of α-amylase transcripts in an α-AMY2-specific and dose-dependent manner. Low CAR concentrations enhance the accumulation of α-AMY2-type α-amylase transcripts, but do not affect the α-AMY1-type transcripts. Low CAR concentrations also enhance the accumulation of α- and β-amylase enzyme activity in sprouts, but not in 'sub-eye' tissues. In contrast, high CAR concentrations have no appreciable effect in sprouts on the enzyme activities and the α-amylase transcript abundances of either group. The dose-dependent effects on the enzyme activities and the α-AMY2-type α-amylase transcripts in sprouts are specific for CAR but not for PMO. Different monoterpenes therefore may have specific targets for their interaction with hormone signalling pathways.

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Section: Discussionmentioning

confidence: 99%

Dose- and tissue-specific interaction of monoterpenes with the gibberellin-mediated release of potato tuber bud dormancy, sprout growth and induction of α-amylases and β-amylases

Rentzsch

Podzimska

Voegele

et al. 2011

Planta

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“…Pollen, considered to be much more sensitive to pollutants than other vegetative parts of a plant (Bocquel, 1995;Xiong and Peng, 2001), deserve to be studied across different gradients of soil pollution. Several degenerative processes in the pollen cells of plants growing on polluted soils have been reported (Cox, 1988a;Micieta and Murin, 1999;Koscinska-Pajak, 2000).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the impact of pollution on plant-Lepidoptera relationships

et al. 2005

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SUMMARYWe monitored the biodiversity of plants, adult butterflies and leaf-miners in a Dutch nature reserve over a period of six years (1994)(1995)(1996)(1997)(1998)(1999) within the International Co-operative Programme on Integrated Monitoring on Air Pollution Effects (ICP-IM). Butterfly abundance decreased steadily over the period, indicating a negative diversity trend, while the number of leaf-mining larvae of Microlepidoptera remained fairly constant. Also the concentration of pollutants (NH 4 , NO 3 , SO 4 , Cd, Cu and Zn) was determined in air, leaves, litter, throughfall and stemflow. We have no reason to expect a negative impact of acidification in rainwater or climate change, as temperature and ozone show no significant trends across the six years.It is shown that the nectar-plants of adult butterflies are much more sensitive to heavy metals than the nectarplants of moths and other pollinating insects. It is hypothesized that the butterfly decline is a secondary effect of heavy metal stress on local plants, not resulting in a decrease in the number of host-plants, but in a selective pressure of pollutants on the plant vigour, subsequently affecting their pollinators ( p < 0.001). An alternative explanation, such as the possible coexistence of a direct effect of xenobiotics on the adult Lepidoptera occurring in the study area, is not supported by our data ( p > 0.05).

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“…Others, Xiong et al (2001) for example, reported that Cd might adversely affect Vicia angustifolia and Vicia tetrasperma reproduction by inhibiting either pollen germination or tube growth even at 0.01 µg/mL concentrations. Furthermore, Cd not only strongly prevented Picea wilsonii pollen germination and tube growth in a dose-dependent manner, but also caused significant morphological alterations, including cytoplasmic vacuolization, swollen tips and irregular tube diameters (Wang et al 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Pollen germination and tube growth are inhibited in the presence of various heavy metals, especially Cd. Previous reports indicated that Cd strongly inhibited pollen germination and tube growth (Xiong and Peng 2001;Sawidis 2008;Sabrine et al 2010). Increased Cd concentrations completely paralyzed cytoplasmic streaming and relocated cell organelles (plastids, lipid droplets) in Lilium longiflorum and Nicotiana tabacum pollen tube tips (Sawidis 2008).…”

Section: Introductionmentioning

confidence: 95%

CsPDC-E1α, a novel pyruvate dehydrogenase complex E1α subunit gene from Camellia sinensis, is induced during cadmium inhibiting pollen tube growth

Pan

Shu

et al. 2017

Can. J. Plant Sci.

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Response of Pollen Germination and Tube Growth to Cadmium with Special Reference to Low Concentration Exposure

Cited by 47 publications

References 26 publications

Dose- and tissue-specific interaction of monoterpenes with the gibberellin-mediated release of potato tuber bud dormancy, sprout growth and induction of α-amylases and β-amylases

Dose- and tissue-specific interaction of monoterpenes with the gibberellin-mediated release of potato tuber bud dormancy, sprout growth and induction of α-amylases and β-amylases

Evaluating the impact of pollution on plant-Lepidoptera relationships

CsPDC-E1α, a novel pyruvate dehydrogenase complex E1α subunit gene from Camellia sinensis, is induced during cadmium inhibiting pollen tube growth

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