Nitrate uptake along the maize primary root: an integrated physiological and molecular approach
نویسندگان
چکیده
منابع مشابه
A nitrate reductase inactivating enzyme from the maize root.
The nitrate reductase in the mature root extract of 3-day maize (Zea mays) seedlings was relatively labile in vitro. Insoluble polyvinylpyrrolidone used in the extraction medium produced only a slight increase in the stability of the enzyme. Mixing the mature root extract with that of the root tip promoted the inactivation of nitrate reductase in the latter. The inactivating factor in the matur...
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In most aerobic soils, nitrate (NO3(-)) is the main nitrogen source for plants and is often limiting for plant growth and development. To adapt to a changing environment, plants have developed complex regulatory mechanisms that involve short and long-range signalling pathways in response to both NO3(-) availability in the soil and other physiological processes like growth or nitrogen (N) and ca...
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Most plants use nitrate (NO3-) as their major nitrogen (N) source. The NO3- uptake capacity of a plant is determined by three interdependent factors that are sensitive to NO3- availability: (i) the functional properties of the transporters in roots that contribute to the acquisition of NO3- from the external medium, (ii) the density of functional transporters at the plasma membrane of root cell...
متن کاملInstability of Nitrate-Insensitive Proton Transport by Maize Root Microsomes
Proton transport catalyzed by the nitrate-insensitive, vanadate-sensitive H+-ATPase in microsomes from maize (Zea mays L.) roots washed with 0.25 molar KI decreased as a function of time at 0 to 4°C. The rate of proton transport was approximately one-half of that by freshly isolated microsomes after 6 to 18 hours of cold storage. The decrease in proton transport coincided with losses in membran...
متن کاملRunning head: Lateral root initiation by local nitrate in maize
Running head: Lateral root initiation by local nitrate in maize 1 2 *Corresponding authors: 3 Frank Hochholdinger 4 Institute of Crop Science and Resource Conservation (INRES) 5 Crop Functional Genomics (CFG) 6 University of Bonn 7 Friedrich-Ebert-Allee 144 8 53113 Bonn, Germany 9 Tel.: +49 228 73 60334 10 Email: [email protected] 11 Chunjian Li 12 Department of Plant Nutrition 13 China...
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ژورنال
عنوان ژورنال: Plant, Cell & Environment
سال: 2011
ISSN: 0140-7791
DOI: 10.1111/j.1365-3040.2011.02311.x