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The change of root morphology of Plantago lanceolata under hypoxia conditions

100%

Banach K., Visser E. J. W., Stepniewska Z., Banach A. M.

Acta Agrophysica

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2012

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tom 19

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nr 2

Many plant species can adapt to flooding and hypoxia by forming a root system with an altered architecture: thicker, shorter and shallower adventitious roots, than under aerated conditions. The internal gas transport is often improved by increased root porosity and aerenchyma, which is tissue with large intercellular spaces. The raised root aeration allows better supply of oxygen to plant tissues and diffusion of oxygen into the rhizosphere (Radial Oxygen Loss, ROL). This phenomenon creates narrow, but well aerated zones in the hypoxic soil, where phytotoxins are oxidised and methanotrophic as well as nitrifying bacteria can live. The aim of the study was to determine the change of root archi-tecture, porosity and ROL from roots of Plantago lanceolata plants originating from The Middle Vistula River Gorge. Selected plant species were subjected to transient flooding during 7 days of culti-vation on aerated and stagnant oxygen-deficient hydroponic medium. We observed the formation of shorter hypoxic, adventitious roots (56-69 mm) than control roots (112-196 mm) with high porosity (stagnant 15-21 %, control 8.5-9.4%), and the diameter of aerated zone (halo) increased from control values of 0-1.5 mm to 2-2.5 mm under hypoxic conditions.

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Zwalczanie chwastow jedno- i dwulisciennych w uprawach babki lancetowatej [Plantago lanceolata L.]

80%

Kordana S., Kucharski W. A., Mordalski R., Gnusowski B.

Progress in Plant Protection

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1999

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tom 39

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nr 2

721-723

3

A moze ziola?

70%

Kluz A.

Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

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1997

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nr 02

7

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Pathogenicity and ultrastructural studies of the mode of penetration by Phyllosticta plantaginis in ribwort leaves

70%

Zimowska B.

Acta Scientiarum Polonorum. Hortorum Cultus

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2014

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tom 13

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nr 3

Pathogenicity and ultrastructural investigation of the ribwort leaves inoculated with Phyllosticta plantaginis conidia was undertaken using scanning electron microscopy to examine the host-parasite relationship. Pathogenicity experiments demonstrated that all tested P. plantaginis isolates had infected leaves of ribwort. Of all inoculation methods, direct placement of colonized agar plugs on damaged epidermis and soaking leaves in conidial suspension were the most effective. The behavior of the conidia deposited on the leaves was investigated at different time intervals after inoculation: 7, 18, 25, 48 and 72 h. An appressorium appeared directly at the end of a short germ tube grown from conidia. Appressoria were formed over the cuticle in some distance from the stomata. Penetration through the stomata was observed.

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Antioxidant activity of selected herbal plants

41%

Duda-Chodak A., Tarko T., Rus M.

Herba Polonica

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2009

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tom 55

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nr 4

65-77

The main aim of the study was to evaluate the antioxidant activity and total polyphenols content in fifteen herbal plants, such as chamomile flower head, oak bark, St. John’s-wort herb, hawthorn flower, dog rose and elder fruits, lingonberry leaf, and many more. From the herbs both the water and methanolic extracts were prepared. The highest antioxidant activity and the highest polyphenols level were obtained for lingonberry leaves (1752.9 mg Trolox/g d.w. and 199.6 mg catechin/g d.w., respectively). The oak bark, St. John’s-wort herb, and flowers of hawthorn and elder were also a very valuable source of antioxidant compounds. It was demonstrated that, in contrary to water, methanol was more efficient solvent for extraction of antioxidant compounds from lingonberry leaf, lime flower, fruits of elder and doge rose, oak bark, flowers of hawthorn, St. John’s-wort herb and heartsease herb. Therapeutic activity of some examined herbs did not depend on antioxidant activity.

Ograniczanie wyników

1 Acta Agrophysica

1 Acta Scientiarum Polonorum. Hortorum Cultus

1 Biuletyn Informacyjno-Handlowy. Ośrodek Doradztwa Rolniczego Boguchwała

1 Herba Polonica

1 Progress in Plant Protection

1 Banach A. M.

1 Banach K.

1 Duda-Chodak A.

1 Gnusowski B.

1 Kluz A.

1 Kordana S.

1 Kucharski W. A.

1 Mordalski R.

1 Rus M.

1 Stepniewska Z.

1 Tarko T.

1 Visser E. J. W.

1 Zimowska B.

1 2014

1 2012

1 2009

1 1999

1 1997

The change of root morphology of Plantago lanceolata under hypoxia conditions

Zwalczanie chwastow jedno- i dwulisciennych w uprawach babki lancetowatej [Plantago lanceolata L.]

A moze ziola?

Pathogenicity and ultrastructural studies of the mode of penetration by Phyllosticta plantaginis in ribwort leaves

Antioxidant activity of selected herbal plants