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Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Factors influencing the efficiency of wheat anther culture

100%
Lantos C., Pauk J.
Acta Biologica Cracoviensia. Series Botanica
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2020
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tom 62
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nr 2
2

Selection of drought tolerant and sensitive genotypes from wheat DH population

81%
Nagy E., Lantos C., Pauk J.
Acta Physiologiae Plantarum
|
2017
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tom 39
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nr 12
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

High frequency of doubled haploid plant production in spelt wheat

71%
Lantos C., Jenes B., Bona L., Cserhati M., Pauk J.
Acta Biologica Cracoviensia. Series Botanica
|
2016
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tom 58
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nr 2
This is the first study to report an efficient anther culture (AC) method for spelt wheat, which has an increasing importance not only in applied research but also in organic farming and changing nutritional standards. In this study, an efficient AC protocol has been described for ‘GK Fehér’ spelt wheat. The number of AC-derived embryolike structures (ELS) was 62.2/100 anthers, from which we were able to regenerate 30.6 green plantlets per 100 anthers. The percentage of green plantlets production was 89.0% among the regenerated plantlets, while the phenomenon of albinism was restricted (3.8/100 anthers). Altogether, from AC of ‘GK Fehér’ 306 green plantlets were produced in vitro and 241 plants were acclimatized to the greenhouse conditions. Based on ploidy level analyses, 83 spontaneous doubled haploid (DH) plants were produced (8.3 DH plants/100 anthers), so the percentage of spontaneous rediploidization was 34.4%. The spontaneous DH plants produced fertile spikes, while a few seeds were harvested from seven partially fertile plants.
4

Phenotyping shows improved physiological traits and seed yield of transgenic wheat plants expressing the alfalfa aldose reductase under permanent drought stress

42%
Feher-Juhasz E., Majer P., Sass L., Lantos C., Csiszar J., Turoczy Z., Mihaly R., Mai A., Horvath G. V., Vass I., Dudits D., Pauk J.
Acta Physiologiae Plantarum
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2014
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tom 36
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nr 03
Members of the aldo–keto reductase family including aldose reductases are involved in antioxidant defense by metabolizing a wide range of lipid peroxidation-derived cytotoxic compounds. Therefore, we produced transgenic wheat genotypes over-expressing the cDNA of alfalfa aldose reductase gene. These plants consequently exhibit 1.5–4.3 times higher detoxification activity for the aldehyde substrate. Permanent drought stress was generated in the greenhouse by growing wheat plants in soil with 20 % water capacity. The control and stressed plants were monitored by a semi automatic phenotyping platform providing computer-controlled watering, digital and thermal imaging. Calculation of biomass values was based on the correlation (R²= 0.7556) between fresh weight and green pixel-based shoot surface area. The green biomass production by plants of the three transgenic lines was 12–26–41 % higher than the non-transgenic plants’ grown under water limitation. Thermal imaging of stressed nontransgenic plants indicated an elevation in the leaf temperature. The thermal status of transformants was similar at both normal and suboptimal water regime. In drought, the transgenic plants used more water during the growing season. The described phenotyping platform provided a comprehensive data set demonstrating the improved physiological condition of the drought stressed transgenic wheat plants in the vegetative growth phase. In soil with reduced water capacity two transgenic genotypes showed higher seed weight per plant than the control non-transgenic one. Limitation of greenhouse-based phenotyping in analysis of yield potential is discussed.
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