The Experts below are selected from a list of 306 Experts worldwide ranked by ideXlab platform

Z. Y. Wang - One of the best experts on this subject based on the ideXlab platform.

  • Tall Fescue (Festuca arundinacea Schreb.).
    Methods in molecular biology (Clifton N.J.), 2006
    Co-Authors: Z. Y. Wang
    Abstract:

    Tall fescue (Festuca arundinacea Schreb.) is the predominant cool-season perennial grass in the United States. It is widely used for both forage and turf purposes. This chapter describes a protocol that allows for the generation of large number of transgenic tall fescue plants by Agrobacterium-mediated transformation. Embryogenic calli induced from caryopsis are used as explants for inoculation with A. tumefaciens. The Agrobacterium strain used is EHA105. Hygromycin phosphotransferase gene (hph) is used as the selectable marker and hygromycin is used as the selection agent. Calli resistant to hygromycin are obtained after 4-6 wk of selection. Soil-grown tall fescue plants can be regenerated 4-5 mo after Agrobacterium-mediated transformation.

  • Genetic Transformation in Festuca arundinacea Schreb. (Tall Fescue) and Festuca pratensis Huds. (Meadow Fescue)
    Biotechnology in Agriculture and Forestry, 1995
    Co-Authors: German Spangenberg, Z. Y. Wang, M. P. Vallés, I. Potrykus
    Abstract:

    Tall fescue (Festuca arundinacea Schreb.) is a wind-pollinated, highly self-infertile polyploid perennial cool-season forage, turf, and conservation grass. It is indigenous to Europe, also naturally occuring on the Baltic coasts throughout the Caucasus, in western Siberia, and extending into China. Introductions have been made into North and South America, Australia, New Zealand, Japan, and South and East Asia (Barnes 1990).

Arkadiusz Kosmala - One of the best experts on this subject based on the ideXlab platform.

  • efficient root metabolism improves drought resistance of Festuca arundinacea
    Plant and Cell Physiology, 2020
    Co-Authors: Dawid Perlikowski, Adam Augustyniak, Aleksandra Skirycz, Izabela Pawlowicz, Katarzyna Masajada, Anne Michaelis, Arkadiusz Kosmala
    Abstract:

    Festuca arundinacea is a model to work on the mechanisms of drought resistance in grasses. The crucial components of that resistance still remain not fully recognized. It was suggested that deep root system could be a crucial trait for drought avoidance strategy but the other components of root performance under water deficit have not paid much attention of scientists. In this study, two genotypes of F. arundinacea with a different ability to withstand soil water deficit were selected to perform comprehensive research, including analysis of root architecture, phytohormones, proteome, primary metabolome and lipidome under progressive stress conditions, followed by a rewatering period. The experiments were performed in tubes, thus enabling undisturbed development of root systems. We demonstrated that long roots are not sufficient to perfectly avoid drought damage in F. arundinacea and to withstand adverse environmental conditions without a disturbed cellular metabolism (with respect to leaf relative water potential and cellular membrane integrity). Furthermore, we proved that metabolic performance of roots is as crucial as its architecture under water deficit, to cope with drought stress via avoidance, tolerance and regeneration strategies. We believe that the presented studies could be a good reference for the other, more applied experiments, in closely related species.

Zengyu Wang - One of the best experts on this subject based on the ideXlab platform.

Dawid Perlikowski - One of the best experts on this subject based on the ideXlab platform.

  • efficient root metabolism improves drought resistance of Festuca arundinacea
    Plant and Cell Physiology, 2020
    Co-Authors: Dawid Perlikowski, Adam Augustyniak, Aleksandra Skirycz, Izabela Pawlowicz, Katarzyna Masajada, Anne Michaelis, Arkadiusz Kosmala
    Abstract:

    Festuca arundinacea is a model to work on the mechanisms of drought resistance in grasses. The crucial components of that resistance still remain not fully recognized. It was suggested that deep root system could be a crucial trait for drought avoidance strategy but the other components of root performance under water deficit have not paid much attention of scientists. In this study, two genotypes of F. arundinacea with a different ability to withstand soil water deficit were selected to perform comprehensive research, including analysis of root architecture, phytohormones, proteome, primary metabolome and lipidome under progressive stress conditions, followed by a rewatering period. The experiments were performed in tubes, thus enabling undisturbed development of root systems. We demonstrated that long roots are not sufficient to perfectly avoid drought damage in F. arundinacea and to withstand adverse environmental conditions without a disturbed cellular metabolism (with respect to leaf relative water potential and cellular membrane integrity). Furthermore, we proved that metabolic performance of roots is as crucial as its architecture under water deficit, to cope with drought stress via avoidance, tolerance and regeneration strategies. We believe that the presented studies could be a good reference for the other, more applied experiments, in closely related species.

C. Rujan - One of the best experts on this subject based on the ideXlab platform.

  • The influence of moisture on the quality indices of Festuca arundinacea seeds.
    Research Journal of Agricultural Science, 2012
    Co-Authors: C. Rujan, C. Giuchici, C. Bostan, A. B. Borozan, C. Durău, L. Cojocariu, D. M. Bordean, M. Horablaga
    Abstract:

    Species Festuca arundinacea has been studied from many points of view. The research on this species has been performed by Romanian scientists, as well as many foreign ones. Nevertheless, the studies regarding seeds and their quality are rare.The paper aims to analyse the influence of moisture on the quality of Festuca arundinacea (Palma variety) seeds during storage. The parameters used were: moisture content (%); Pure seeds (%, weight); Inert matter (% weight); Other crop seeds(% weight); Total Germination Normal seedlings(% number); Abnormal seedlings(% number); Dead seeds (% number). The biological material we used was made up of Festuca arundinacea (Palma variety) seeds obtained in specific Banat conditions. The seed samples were taken from three granaries, found in three different towns: Jimbolia, Ciacova and Ghertenis (Caras-Severin County). Two seed quality analyses were performed during storage: the first took place six weeks after harvest and the second was performed 30 days after the first determinations. Following the first determination (December 2009), the moisture of Festuca arundinacea (Palma variety) seeds was 13% in the granary at Ciacova germination ranged from 76% (granary at Jimbolia) and 77% (in the granary at Ciacova). In the storehouse at Gherhenis, the moisture of Festuca arundinacea (Palma variety) seeds was 14%, and germination was 76%. One month after the first determination, we made a second analysis (January 2012) of the seeds and we noticed that moisture had increased by one percent in the granaries at Ciacova and Jimbolia, which led to a decrease in seed germination, in the number of normal seedlings and an increase in the number of dead seeds in both granaries. In the Gherhenis granary, the second determination found the same moisture values for Festuca arundinacea seeds, i.e. 14%. However, seed germination went down. Low germination of Festuca arundinacea (Palma variety) seeds is caused primarily by unsuitable storage conditions that led to an increase in the moisture index. In its turn, moisture influences the variation of the parameters under study. The seed moisture content controls the variation of the parameters to a greater or a smaller extent. Lower Moisture Content is direct correlated with the percentage of Total Germination.

  • Assessing new foreign varieties of Festuca arundinacea in hay meadow management regime.
    Research Journal of Agricultural Science, 2011
    Co-Authors: M. Corches, L. Cojocariu, C. Rujan
    Abstract:

    The yield of cultivars varies largely from their genetic productive potential, in relation to the environmental conditions and to their adaptabili ty or tolerance to the main limiting factors (diseases, pests, unfavourable climatic conditions, genetic vulnerability. (SAVATTI, 2004).This paper aims at finding theproductive potential of three foreign varieties ofFestuca arundinacea,under Banat Plain conditions.In order to reach this goal, we studied three varieties of Festuca arundinacea in the experimental cycle 2008-2010from the point of view of their dry matter y From the analysis of the synthesis of dry matter yields obtained in hay