Optimizing conditions for Nitellopsis obtusa (starry stonewort) growth and bulbil germination in a controlled environment

Pokrzywinski, Kaytee L.; Sartain, Bradley; Greer, Michael John Crawshaw; Getsinger, Kurt D.; Fields, Morris P.

doi:10.1016/j.aquabot.2019.103163

Cited by 6 publications

(5 citation statements)

References 19 publications

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“…Such a wide distribution of N. obtusa is related to the tolerance of high nutrient levels, hence it can occur in eutrophic and even highly eutrophic waters, and changeable salinity as the species is known form oligohaline waters (Urbaniak, 2003;Bučas et al, 2019) but is able to survive salinity fluctuation up to 17 PSU (Winter et al, 1999). Also, the adaptation to light conditions (Pokrzywiński et al, 2020) and depth range indicate the eurytopic nature of starry stonewort, reported from 0.5 to [ 14 m deep sites in its native range and between 0.5 and 7 m in the invaded range (Larkin et al, 2018). Nevertheless, based on our results combined with the results of previous investigations of 50 N. obtusa-dominated stands in 15 lakes of western Poland (Styperek et al 2014), as well as the environmental data from the above-cited works from the species invaded range, it can be concluded that N. obtusa-dominated stands prefer mesotrophic to moderately eutrophic lakes.…”

Section: Discussionmentioning

confidence: 99%

Impact of Nitellopsis obtusa (Desv.) J. Groves, a regionally alien and invasive charophyte, on macrophyte diversity in the species native range

et al. 2021

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This study aimed to determine the relationships between the abundance of Nitellopsis obtusa, a controversial charophyte, locally red-listed in its native Eurasian range but invasive in North America, and the species diversity of macrophyte stands dominated by N. obtusa. Three lakes of different morphology, productivity and catchment were surveyed in the species native range. In each lake, the species composition and cover of three N. obtusa-dominated stands were determined monthly from spring to autumn and illustrated by the Shannon–Wiener diversity index. Water chemistry supplemented vegetation study. The species diversity turned out to be lake-specific and declined with the increasing share of N. obtusa, which developed mass occurrence in less mineralised and less fertile waters, leaving no space and limiting light and nutrient availability for large and branchy macrophytes. We postulate that this mechanism makes N. obtusa a superior competitor in less fertile waters and seems common to both native and invaded territories, as is the pool of macrophyte species most frequently co-occurring with N. obtusa.

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Section: Discussionmentioning

confidence: 99%

Impact of Nitellopsis obtusa (Desv.) J. Groves, a regionally alien and invasive charophyte, on macrophyte diversity in the species native range

et al. 2021

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“…In contrast to generative reproduction, there is a limited amount of literature on asexual reproduction. However, only a few scientists (Braun 1852, Giesenhagen 1897, Migula 1898, Bharatan 1987, Sederias 2003, Skurzyński and Bociąg 2011, Pokrzywinski et al 2020 have studied this type of propagation in detail for species of the genera Nitellopsis, Chara, Lamprothamnium and Paleonitella. According to the time, cell division in nodal cells and the emergence of new shoots were mainly visualised by schematic representations, as studies and visualisation with modern microscopy techniques does not exist, except for the rhizoids themselves (e.g.…”

Section: Asexual Reproduction Of Charophytesmentioning

confidence: 99%

“…Steinhardt and Selig (2007), Skurzyński andBociąg (2011), Holzhausen et al (2017)). Recent studies from North America suggest that vegetative parts of Nitellopsis obtusa may also form a perennial reservoir (Pokrzywinski et al 2020). In contrast, oospores produced by sexual reproduction show a long-term reservoir in aquatic sediments.…”

Section: Introductionmentioning

confidence: 99%

What we really know about the dormancy, reproduction, and germination of charophytes and the new method of ECO-IN-VITRO-CULTIVATION

Holzhausen

2023

Preprint

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This paper aims to provide information on previous basic research by charophyte experts mainly in the field of reproduction, dormancy, and germination of oospores. Therefore, published information, the author’s PhD thesis and further new results have been combined to summarise the state of knowledge for Characeae of permanent and temporary water bodies. The understanding and integration of evolutionary, systematic, and ecological knowledge enables the successful establishment of laboratory cultures as well as axenic cultures. The combination of ecological field monitoring and species-specific background knowledge led to the new cultivation method of ECO-IN-VITRO-CULTIVATION as shown for Chara hispida. This paper is dedicated to two experts of the Characeae research who passed away too early. Tim Steinhardt, the best oospore lab colleague and Andrzej Pukacz with whom I had the talk of transferring field ecology into my Chara cultures during my visit in Poznań, when you wanted to teach me the use of all my properties.

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“…Shallots can form bulbils by inhibiting the shoot apical meristem (Shalom et al, 2015;Wu et al, 2015). Bulbils are widely known in tuberous plants such as begonias, potatoes, and Dioscorea sp (Pokrzywinski et al, 2020;Terui and Okagami, 1998). Bulbils are a vegetative part that can be used for the benefit of seedlings.…”

Section: Introductionmentioning

confidence: 99%

Initiation of Flowering and Bulbils in Shallot with Various Treatments in Tropical Regions

Triharyanto

Pujiasmanto

Handoyo

2021

IJARe

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Background: Shallots are one of the horticultural commodities with low production growth value in Indonesia. Shallots production in Indonesia is limited by the quality of planting material and the climate, especially temperature. The flowering of shallots is a significant obstacle to the regulation of tuber development and bulbils. This study aimed to examine the effect of treatment on the initiation of flowering and the formation of bulbils. Methods: The method used was a complete randomized block design with six treatments: without treatment, vernalization at 5oC, Immersion GA3 100 ppm, Immersion IAA 100 ppm, Immersion NAA 100 ppm, injury to the flower stalk and three replications. Result: The treatment of flowering initiation and the formation of bulbils had a significant effect on the flowering day, the number of flower stalks, the percentage of flowering plants, number weight of bulbils and weight of bulbils. GA3 and vernalization can speed up the appearance of flowers and increase the percentage of flowering plants. GA3 and the opening of the flower stalks can encourage the formation of bulbils with a higher weight and diameter of the tubers. The flowering day had a negative correlation with the number of bulbils formed. Bulbils formation requires a higher content of endogenous GA3. GA3 can initiate the flowering and formation of shallot bulbils.

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Optimizing conditions for Nitellopsis obtusa (starry stonewort) growth and bulbil germination in a controlled environment

Cited by 6 publications

References 19 publications

Impact of Nitellopsis obtusa (Desv.) J. Groves, a regionally alien and invasive charophyte, on macrophyte diversity in the species native range

Impact of Nitellopsis obtusa (Desv.) J. Groves, a regionally alien and invasive charophyte, on macrophyte diversity in the species native range

What we really know about the dormancy, reproduction, and germination of charophytes and the new method of ECO-IN-VITRO-CULTIVATION

Initiation of Flowering and Bulbils in Shallot with Various Treatments in Tropical Regions

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