Adventitious Buds on Leaves of Drosera Rotundifolia

Previous evidence indicates that changes in well-defined phases of dormancy in underground adventitious buds of leafy spurge in late summer and autumn are regulated by complex sensing and signaling pathways involving aboveground sugar signals. However, little information exists concerning seasonal photosynthesis and carbohydrate partitioning of leafy spurge, although such information would help to elucidate the involvement of sugar in controlling bud dormancy. An outdoor study was conducted over two growing seasons to determine and model seasonal patterns of photosynthesis and aboveground carbohydrate partitioning and their relationship to underground adventitious bud carbohydrate status. Photosynthesis and total nonstructural carbohydrate (TNC) content of aboveground tissues was greatest during vegetative growth. Photosynthesis gradually declined over the growing season, whereas TNC decreased sharply during flowering, followed by a gradual decline between midsummer and autumn. Leaf starch increased dramatically to midsummer before declining sharply throughout late summer and early autumn, whereas sucrose content responded inversely, indicating a mobilization of starch reserves and export of sugars to overwintering belowground sink tissues. Because newly formed underground adventitious buds showed a continuous increase in TNC from midsummer through autumn, export of sugars from aboveground tissues likely contributed to the increase in TNC. These results may facilitate new strategies for biological control of leafy spurge.

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Reliance on prey-derived nitrogen by the carnivorous plant Drosera rotundifolia decreases with increasing nitrogen deposition

New Phytologist ◽

10.1111/j.1469-8137.2012.04139.x ◽

2012 ◽

Vol 195 (1) ◽

pp. 182-188 ◽

Cited By ~ 12

Author(s):

J. Millett ◽

B. M. Svensson ◽

J. Newton ◽

H. Rydin

Keyword(s):

Nitrogen Deposition ◽

Carnivorous Plant ◽

Drosera Rotundifolia

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Additives Promote Adventitious Buds Induction from Stem Segments of Bitter Melon (Momordica charantia L.)

Journal of Agricultural Science ◽

10.5539/jas.v3n2p13 ◽

2011 ◽

Vol 3 (2) ◽

Author(s):

Yi Tang ◽

Ji Liu ◽

Bin Liu ◽

Xiaomei Li ◽

Juan Li ◽

...

Keyword(s):

Momordica Charantia ◽

Bitter Melon ◽

Adventitious Buds ◽

Stem Segments

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Long-term preservation of Lotus tenuis adventitious buds

Plant Cell Tissue and Organ Culture (PCTOC) ◽

10.1007/s11240-018-1522-6 ◽

2018 ◽

Vol 136 (2) ◽

pp. 373-382 ◽

Cited By ~ 1

Author(s):

Fabiana D. Espasandin ◽

Elsa A. Brugnoli ◽

Paula G. Ayala ◽

Lilian P. Ayala ◽

Oscar A. Ruiz ◽

...

Keyword(s):

Adventitious Buds ◽

Lotus Tenuis ◽

Long Term Preservation

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Induction and micropropagation potential of sugar beet haploids

Genetika ◽

10.2298/gensr0403187n ◽

2004 ◽

Vol 36 (3) ◽

pp. 187-194 ◽

Cited By ~ 1

Author(s):

Nevena Nagl ◽

Snezana Mezei ◽

Lazar Kovacev ◽

Dragana Vasic ◽

Nikola Cacic

Keyword(s):

Sugar Beet ◽

Correlation Coefficients ◽

Ovule Culture ◽

Axillary Buds ◽

Haploid Plant ◽

Multiplication Rate ◽

Adventitious Buds ◽

Nutrient Media

The aim of research was obtaining sugar beet haploids via gyno-genesis and their micropropagation. Haploids were obtained by ovule culture from fourteen diploid, monogerm, fertile genotypes. On the tested nutrient media genotypes exhibited different gynogenic potential. Eight haploid plant were chosen for further investigation and after development of first leaves put on micropropagation medium. The presence of cyto-kinin in medium stimulated development of axillary buds, while in some genotypes adventitious buds developed as well. Multiplication rate was not consistent, although number of developed plants grew after each sub-cultivation. Differences in plant multiplication started to differ after four subcultures. By testing of differences between correlation coefficients, i.e. multiplication rate during six subcultivations, it was determined that they significantly differ between tested genotypes.

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Induction of callus and adventitious shoots on epicotyl and hypocotyl segments of cumaru (Dipteryx odorata)

Comunicata Scientiae ◽

10.14295/cs.v9i3.1618 ◽

2018 ◽

Vol 9 (3) ◽

pp. 475-480

Author(s):

Paulo Tarso Barbosa Sampaio ◽

Lyana Silva Jardim ◽

Ariel Dotto Blind ◽

Flavio Mauro Souza Bruno

Keyword(s):

Native Species ◽

Callus Formation ◽

Adventitious Shoots ◽

Ms Medium ◽

Adventitious Buds ◽

Clonal Multiplication ◽

Benefit Ratio ◽

Dipteryx Odorata ◽

Hypocotyl Segments

Somatic embryogenesis from callus induced in epicotyl and hypocotyl segments can be viable native species in order to better -benefit ratio costs, and rates of clonal multiplication. In this sense, two trials were established to induce callus and adventitious buds on hypocotyl and epicotyl segments of cumaru bean seedlings germinated in vitro in different concentrations and combinations of growth regulators. At first, we used the MS medium supplementwith ANA (0.0, 1.5 mg.L-1) and TDZ (0.0, 4.0 and 8.0 mg.L-1) distributed in factorial 2 x 3 x 2 (x auxin cytokinin x explant) with eight replications. In the second, it was used the WPM medium supplemented with BAP (2.0 mg L-1) and plus 2,4-D (2.0 and 4.0 mg L-1) in a factorial 2 x 2 (auxin x explant) with 15 repetitions each. They were evaluating callus formation and the average number of adventitious shoots during the period of 90 days. The results indicated that the highest average for callus formation was observed when the explants were subjected to concentrations of 8.0 mg L-1 TDZ combined with 1.5 mg L-1 ANA in MS medium. For the formation of buds, the WPM medium plus 2.0 mg L-1 2,4-D in the second experiment, induced higher number of shoots, being significant the use of auxin, and its interaction with the type of explant.

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The occurence of rare and protected plant species on the peat bog near Lake Bikcze (Łęczyńsko-Włodawskie Lakeland)

Acta Agrobotanica ◽

10.5586/aa.2008.039 ◽

2012 ◽

Vol 61 (2) ◽

pp. 113-120 ◽

Cited By ~ 2

Author(s):

Magdalena Pogorzelec ◽

Barbara Banach

Keyword(s):

Plant Species ◽

Abiotic Factors ◽

Habitat Preferences ◽

Peat Bog ◽

Habitat Conditions ◽

Drosera Rotundifolia ◽

Western Shore ◽

Betula Humilis ◽

Menyanthes Trifoliata

This paper presents the results of a pilot field study, conducted in July 2007, designed to make floristic evaluation of the peat bog area adjacent to the western shore of Lake Bikcze (Łęczyńsko-Włodawskie Lakeland). The main aim of the study was to confirm the occurrence of populations of rare and legally protected plant species in this area and to identify, on a preliminary basis, habitat conditions in their stands. The occurrence of populations of the following strictly protected plant species: Betula humilis, Salix lapponum, Salix myrtilloides, Carex limosa, Drosera intermedia, Drosera rotundifolia, Dactylorhiza incarnata; and partially protected species: Menyanthes trifoliata, has been confirmed in the studied peat bog. Both an investigation of abiotic factors, conducted in situ, and an analysis of the species composition of the flora in terms of habitat preferences of particular groups of taxa have shown that the described rare plant species find suitable conditions for their growth and development in the studied peat bog.

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