Wyniki wyszukiwania

1

Bryophytes, the desiccation-tolerance and the elevated air CO2

100%

Tuba Z.

Biological Bulletin of Poznań

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2001

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tom 38

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nr 2

2

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Investigations on ecological effects of heavy metal pollution in Hungary by moss-dwelling water bears [Tardigrada], as bioindicators

51%

Vargha B., Otvos E., Tuba Z.

Annals of Agricultural and Environmental Medicine

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2002

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tom 09

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nr 2

3

Differences in physiological adaptation of Haberlea rhodopensis Friv. leaves and roots during dehydration - rehydration cycle

45%

Peli E. R., Mihailova G., Petkova S., Tuba Z., Georgieva K.

Acta Physiologiae Plantarum

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2012

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tom 34

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nr 3

The ecophysiological responses of the homoiochlorophyllous desiccation-tolerant (HDT) plant Haberlea rhodopensis showed that this plant could tolerate water deficit and both leaves and roots had high ability to survive severe desiccation. The changes and correlation between CO₂ assimilation, stomatal conductance, contents of photosynthetic pigments, root respiration and specific leaf area during dehydration–rehydration cycle were investigated. The physiological activity of leaves and roots were examined in fully hydrated (control) plants and during 72 h of dehydration, as well as following 96 h of rehydration every 6 and 24 h. After 6 h of dehydration, the stomatal conductance declined and the intercellular CO₂ concentration increased. The reduction in CO₂ assimilation rate was observed after 54 h of dehydration. There was a good correlation between the root respiration and water content. Our results showed that the plasticity of adaptation in leaves and roots were different during extreme water conditions. Roots were more sensitive and reacted faster to water stress than leaves, but their activity rapidly recovered due to immediate and efficient utilization of periodic water supply.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Annals of Agricultural and Environmental Medicine

1 Biological Bulletin of Poznań

3 Tuba Z.

1 Georgieva K.

1 Mihailova G.

1 Otvos E.

1 Peli E. R.

1 Petkova S.

1 Vargha B.

1 2012

1 2002

1 2001

Bryophytes, the desiccation-tolerance and the elevated air CO2

Investigations on ecological effects of heavy metal pollution in Hungary by moss-dwelling water bears [Tardigrada], as bioindicators

Differences in physiological adaptation of Haberlea rhodopensis Friv. leaves and roots during dehydration - rehydration cycle