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Plants containing cardiac glycosides showing antiphytoviral activity against Potato virus Y (PVYNTN) on tobacco plants

100%

Yazdi S. E., Mulabisana J., Prinsloo G., Cloete M., Kritzinger Q.

Journal of Plant Protection Research

2018

tom 58

nr 4

The tuber necrotic strain of Potato virus Y (PVYNTN) causes widespread disease and has severe negative effects on the growth and yields of plants, especially those of the Solanaceae family. The consequences of residual toxicity and non-biodegradation of synthetic chemicals and pollution of the environment has led to investigations into new non-toxic and biological treatments to control plant viral diseases. Ethanolic extracts of Bowiea volubilis (bulbs), Cotyledon orbiculata (leaves), Gomphocarpus fruticosus (leaves), Merwilla plumbea (dry and fresh bulbs), Nerium oleander (leaves), and the fruits and leaves of Strophanthus speciosus, were evaluated against PVYNTN in vivo and in vitro. At a concentration of 20 mg · ml−1, ethanolic extracts of Strophanthus speciosus (leaves) and fruits (50 mg · ml−1) significantly reduced the expression of PVYNTN symptoms on tobacco plants in vitro without affecting the normal growth and development of the plant. Similarly, at 50 mg · ml−1, N. oleander, C. orbiculata and B. volubilis (fresh bulbs) and S. speciousus leaves at 20 mg · ml−1 extracts showed significant differences in PVYNTN symptoms in the in vivo experiment. Strophanthus speciosus leaf and fruit extracts showed significant inhibition in the in vitro and in vivo assays and demonstrated that S. speciosus has potential to be used as an antiphytoviral treatment.

In vitro propagation of Centaurea rupestris L.

80%

Curkovic P. M.

Acta Biologica Cracoviensia. Series Botanica

2003

tom 45

nr 2

A rapid clonal propagation method was developed for Centaurea rupestris L., a Balkan Apennine endemic which contains a flavonoid with strong antiphytoviral, antibacterial and antifungal activity. Shoots from aseptically germinated seeds were used for culture initiation. The highest multiplication rate, 11.88 shoots per explant, was achieved in 4 weeks-culture-period in the third subculture on MS medium supplemented with 1 µM 6-benzylamino-purine and 2.9 µM gibberellic acid. The best rooting of excised shoots was achieved on half-strength MS medium supplemented with 3 µM indole-3-butyric acid. Rooted plantlets were transferred to potting soil and acclimatized to outdoor conditions.

Screening of different algal extracts for their efficiency against mechanical transmission of two phytoviruses

80%

Galal A. M., El-Ayouty Y. M., Hashem S. A., El-Sabbahy G.

Acta Hydrobiologica

1999

tom 41

nr 2

Ograniczanie wyników

1 Acta Biologica Cracoviensia. Series Botanica

1 Acta Hydrobiologica

1 Journal of Plant Protection Research

1 Cloete M.

1 Curkovic P. M.

1 El-Ayouty Y. M.

1 El-Sabbahy G.

1 Galal A. M.

1 Hashem S. A.

1 Kritzinger Q.

1 Mulabisana J.

1 Prinsloo G.

1 Yazdi S. E.

1 2018

1 2003

1 1999

Wyniki wyszukiwania

Plants containing cardiac glycosides showing antiphytoviral activity against Potato virus Y (PVYNTN) on tobacco plants

In vitro propagation of Centaurea rupestris L.

Screening of different algal extracts for their efficiency against mechanical transmission of two phytoviruses