Structural anomalies in pollen grains of Dyckia racinae L.B.Sm. (Bromeliaceae)

Carvalho, Jordano Dorval Tavares de; Oliveira, João Marcelo Santos de

doi:10.1007/s40415-020-00673-w

Cited by 3 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mortality of pollen grains may result from errors in meiosis producing pollen tetrads with two dead grains in Typha latifolia L. [92]. Variations in the cytoplasmic content of pollen in anthers have been often described as being linked to some asynchronous division and delayed degradation of tapetal cells, resulting in the formation of abnormal and empty pollen in Jasminum sambac Aiton [93] and in Dyckia-Bromeliaceae [94]. A high incidence of deformed or anomalous pollen in wild plants of Quercus, Betula and Crataegus interspecific hybrids [91,95,96], and pollen grains with little or no cytoplasm in Cornus mas L. [97], Actinidia interspecific hybrids [98], Prunus persica (L.) Batsch [99], Cucumis melo L. [100], Triticum aestivum L. [101] and Castanea sativa Mill.…”

Section: Empty Pollen As Evidence Of Environmental Stressmentioning

confidence: 99%

Pollen and Flora as Bioindicators in Assessing the Status of Polluted Sites: The Case Study of the Mantua Lakes (SIN “Laghi di Mantova e Polo Chimico”; N Italy)

et al. 2023

View full text Add to dashboard Cite

An integrated floristic and palynological approach was carried out at the site of national interest “Laghi di Mantova e Polo Chimico” to obtain an environmental assessment useful for monitoring polluted sites. The flora of highly contaminated sectors (area A and area B) was surveyed, and the floristic composition and ecological strategies of the species were compared with a control sector (area C). A total of 195 species were observed in the three sectors. Pollen preservation of six selected species was checked as a bioindicator of environmental health in the same sectors. Area A and area B likely share similar environmental pressures, including anthropogenic stressors such as pollution, geographical proximity and a similar set of habitats, leading to similarities in flora composition. Similarly, the incidence of pollen without cytoplasm is higher in area A (9.3%) and area B (7.6%) than in area C (2.5%). The floristic differences among the sectors and the quantity of empty or abnormal pollen, together with the CSR strategies adopted by the species, suggest that the effects of anthropogenic impact on local vegetation can be detected at both macroscopic and microscopic levels. The discovery of the protected species Narcissus pseudonarcissus in area C is noteworthy, which may be important in directing efforts towards the protection of plant communities in this sector.

show abstract