Ambient levels of nitrogen dioxide (NO2) may reduce pollen viability in Austrian pine (Pinus nigra Arnold) trees — Correlative evidence from a field study

Gottardini, E.; Cristofori, Alessandro; Cristofolini, F.; Maccherini, Simona; Ferretti, Marco

doi:10.1016/j.scitotenv.2008.04.048

Cited by 18 publications

(12 citation statements)

References 28 publications

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“…Since many seedlings had shed all leaves during the continuous drying treatment, it could not be ascertained visually, whether they had died or were still alive. Therefore, seedlings were tested for vitality using the TTC-test at leading shoots [74]. Before drying for biomass determination, the buds were cut from the shoots and a colorless solution of 2,3,5 tryphenil-tetrazolium-chloride (TTC) was applied.…”

Section: Seedling Biomass Growth Leaf Area and Shoot Diebackmentioning

confidence: 99%

Effects of Drought and Rewetting on Growth and Gas Exchange of Minor European Broadleaved Tree Species

Kunz

Räder

Bauhus

2016

Forests

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Widespread and economically important European tree species such as Norway spruce, Scots pine, and European beech are projected to be negatively affected by the increasing intensity and frequency of dry and hot conditions in a future climate. Hence, there is an increasing need to investigate the suitability of presumably more drought tolerant species to ensure future ecological stability, biodiversity, and productivity of forests. Based on their distribution patterns and climatic envelopes, the rare, minor broadleaved tree species Sorbus torminalis ((L.) C RANTZ ), S. domestica (L.), Acer campestre (L.), and A. platanoides (L.) are assumed to be drought tolerant, however, there is only limited experimental basis to support that notion. This study aimed at quantifying growth and gas exchange of seedlings of these species during drought conditions, and their capacity to recover following drought. For that purpose, they were compared to the common companion species Quercus petraea ((M ATTUSCHKA ) L IEBL .) and Fagus sylvatica (L.). Here, potted seedlings of these species were exposed to water limitation followed by rewetting cycles in a greenhouse experiment. Photosynthesis and transpiration rates, stomatal conductance as well as root and shoot growth rates indicated a high drought resistance of A. campestre and A. platanoides. Sorbus domestica showed a marked ability to recover after drought stress. Therefore, we conclude that these minor tree species have the potential to enrich forests on drought-prone sites. Results from this pot experiment need to be complemented by field studies, in which the drought response of the species is not influenced by restrictions to root development.

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Section: Seedling Biomass Growth Leaf Area and Shoot Diebackmentioning

confidence: 99%

Effects of Drought and Rewetting on Growth and Gas Exchange of Minor European Broadleaved Tree Species

Kunz

Räder

Bauhus

2016

Forests

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“…Reduced viability is often associated with processes such as hybridization and inbreeding (Carr and Dudash 1997, Golmirzaie et al 1998, Melser et al 1999, Busch 2005, Glaettli and Goudet 2006, Eppley and Pannell 2009, Bures et al 2010, or environmental stress such as exposure to high temperature or pollutants (Handique and Baruah 1995, Tretyakova et al 1996, Gottardini et al 2008, Pasqualini et al 2011.…”

Section: Introductionmentioning

confidence: 99%

Pollen quality for pollinators tracks pollen quality for plants in Mimulus guttatus

2014

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Abstract. Pollen viability ranges substantially among and within plant species, and can be reduced by various factors, including pollution and inbreeding. While it is evident that a reduction in gamete quality reduces the male component of plant fitness, the implications of changes in pollen viability on the nutritional value of pollen for pollinators has not been studied. To test this, we created a greenhouse population of Mimulus guttatus plants that ranged in pollen viability from 17% to 98.5% and related both pollen quantity and pollen protein content to pollen viability. We found that crude protein concentration ranged from 15% to 45% and was positively associated with pollen viability. We also found that pollen mass per flower ranged 5-fold, also positively related to pollen viability. Across experimental plants, there was an 11-fold difference in protein mass per flower between plants of the lowest and highest pollen viabilities. We conclude that conditions that lead to reduced pollen viability, especially early in pollen development, may greatly reduce the awards available to plant pollinators.

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“…A reduced pollen viability of Pinus nigra under ambient NO 2 levels was found in a field study [22]. Similarly in vitro fumigation of pollen from three tree species reduced the viability and germination [23].…”

Section: Introductionmentioning

confidence: 70%

Effects of NO<sub>2</sub> on Inflorescence Length, Pollen/Seed Amount and Phenolic Metabolites of Common Ragweed (<i>Ambrosia artemisiifolia</i> L.)

Zhao¹,

Heller²,

Stich³

et al. 2017

AJPS

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Ambrosia artemisiifolia L. (common ragweed) is an annual ruderal plant that is native to Northern America but nowadays is also spreading across Europe, and its pollen is known to be highly allergenic. Air pollution, e.g. NOx and climate change may affect the plant growth, pollen production and duration of the entire pollen season. In this study, ragweed plants were grown over an entire vegetation period under 40 ppb NO 2 /clean air (control) and 80 ppb NO 2 (treatment). The inflorescence length was not affected by this air pollutant. However, the pollen amount increased, while the seed production decreased in both populations upon elevated NO 2 concentrations. Regarding phenolic metabolites elevated NO 2 had no effect on the amount of total phenolic metabolites, while individual metabolites showed significant changes.

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Ambient levels of nitrogen dioxide (NO2) may reduce pollen viability in Austrian pine (Pinus nigra Arnold) trees — Correlative evidence from a field study

Cited by 18 publications

References 28 publications

Effects of Drought and Rewetting on Growth and Gas Exchange of Minor European Broadleaved Tree Species

Effects of Drought and Rewetting on Growth and Gas Exchange of Minor European Broadleaved Tree Species

Pollen quality for pollinators tracks pollen quality for plants in Mimulus guttatus

Effects of NO<sub>2</sub> on Inflorescence Length, Pollen/Seed Amount and Phenolic Metabolites of Common Ragweed (<i>Ambrosia artemisiifolia</i> L.)

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Ambient levels of nitrogen dioxide (NO2) may reduce pollen viability in Austrian pine (Pinus nigra Arnold) trees — Correlative evidence from a field study

Cited by 18 publications

References 28 publications

Effects of Drought and Rewetting on Growth and Gas Exchange of Minor European Broadleaved Tree Species

Effects of Drought and Rewetting on Growth and Gas Exchange of Minor European Broadleaved Tree Species

Pollen quality for pollinators tracks pollen quality for plants in Mimulus guttatus

Effects of NO&lt;sub&gt;2&lt;/sub&gt; on Inflorescence Length, Pollen/Seed Amount and Phenolic Metabolites of Common Ragweed (&lt;i&gt;Ambrosia artemisiifolia&lt;/i&gt; L.)

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Effects of NO<sub>2</sub> on Inflorescence Length, Pollen/Seed Amount and Phenolic Metabolites of Common Ragweed (<i>Ambrosia artemisiifolia</i> L.)