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Fan TF, He MJ, Li CJ, Shi DX, Yang C, Chen YY, Ke J, Chen YX, Zhang L, Li DQ, Liu LH, Xu C. Physiological dissection revealed that both uptake and assimilation are the major components regulating different growth responses of two tobacco cultivars to nitrogen nutrition. PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20:39-49. [PMID: 28985445 DOI: 10.1111/plb.12642] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 09/30/2017] [Indexed: 06/07/2023]
Abstract
K326 and HD represent major tobacco cultivars in China, which required large N fertiliser input but at different application rates. To understand primary components affecting tobacco N use physiology, we adopted these two varieties as valuable genetic material to assess their growth response to N nutrition. We established a hydroponic culture system to grow plants supplied with different N regimes. Plant biomass, N, ammonium, nitrate, arginine, GS and NR activity, N transfer and use efficiency as well as root uptake were examined. Our data revealed the preference of K326 and HD to utilise nitrate or ammonium nitrate but not ammonium alone, with 2 mm N supply probably sufficient and economical to achieve good biomass production at the vegetative stage. Moreover, both varieties were very sensitive to ammonium, perhaps due to lack of or abnormal signalling related to nitrate and/or arginine rather than impairment of N acquisition and initial assimilation; this was supported by measurements of the plant content of N, ammonium and activities of GS and NR. Notably, short-term 15 N root influx studies identified differential uptake kinetics of K326 and HD, with distinct affinities and transport rates for ammonium and nitrate. The data suggest that the growth adaptation of K326 or HD to higher or lower N may be ascribed to different competences for effective N uptake/translocation and assimilation. Thus, our work provides valuable information to prompt deeper investigation of the molecular basis controlling plant N use efficiency.
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Affiliation(s)
- T-F Fan
- Institute of Chongqing Tobacco Science Research of Chongqing Tobacco Company, China Tobacco Corporation, Chongqing, China
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - M-J He
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
- College of Agriculture Sciences, Hunan Agricultural University, Changsha, China
| | - C-J Li
- Institute of Chongqing Tobacco Science Research of Chongqing Tobacco Company, China Tobacco Corporation, Chongqing, China
| | - D-X Shi
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - C Yang
- Institute of Chongqing Tobacco Science Research of Chongqing Tobacco Company, China Tobacco Corporation, Chongqing, China
| | - Y-Y Chen
- Institute of Chongqing Tobacco Science Research of Chongqing Tobacco Company, China Tobacco Corporation, Chongqing, China
| | - J Ke
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - Y-X Chen
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - L Zhang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
| | - D-Q Li
- College of Agriculture Sciences, Hunan Agricultural University, Changsha, China
| | - L-H Liu
- College of Resources and Environmental Sciences, China Agricultural University, Beijing, China
- College of Agriculture Sciences, Hunan Agricultural University, Changsha, China
| | - C Xu
- Institute of Chongqing Tobacco Science Research of Chongqing Tobacco Company, China Tobacco Corporation, Chongqing, China
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Chandna R, Ahmad A. Nitrogen stress-induced alterations in the leaf proteome of two wheat varieties grown at different nitrogen levels. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2015; 21:19-33. [PMID: 25649735 PMCID: PMC4312336 DOI: 10.1007/s12298-014-0277-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/18/2014] [Accepted: 12/22/2014] [Indexed: 06/04/2023]
Abstract
Inorganic nitrogen (N) is a key limiting factor of the agricultural productivity. Nitrogen utilization efficiency has significant impact on crop growth and yield as well as on the reduction in production cost. The excessive nitrogen application is accompanied with severe negative impact on environment. Thus to reduce the environmental contamination, improving NUE is need of an hour. In our study we have deployed comparative proteome analysis using 2-DE to investigate the effect of the nitrogen nutrition on differential expression pattern of leaf proteins in low-N sensitive and low-N tolerant wheat (Triticum aestivum L.) varieties. Results showed a comprehensive picture of the post-transcriptional response to different nitrogen regimes administered which would be expected to serve as a basic platform for further characterization of gene function and regulation. We detected proteins related to photosynthesis, glycolysis, nitrogen metabolism, sulphur metabolism and defence. Our results provide new insights towards the altered protein pattern in response to N stress. Through this study we suggest that genes functioning in many physiological events coordinate the response to availability of nitrogen and also for the improvement of NUE of crops.
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Affiliation(s)
- Ruby Chandna
- Department of Botany, Faculty of Science, Hamdard University, New Delhi, India
| | - Altaf Ahmad
- Department of Botany, Faculty of Science, Hamdard University, New Delhi, India
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Akfirat FS, Ertugrul F, Hasancebi S, Aydin Y, Akan K, Mert Z, Cakir M, Uncuoglu AA. Chromosomal location of genomic SSR markers associated with yellow rust resistance in Turkish bread wheat (Triticum aestivum L.). J Genet 2014; 92:233-40. [PMID: 23970078 DOI: 10.1007/s12041-013-0254-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We have previously reported Xgwm382 as a diagnostic marker for disease resistance against yellow rust in Izgi2001 x ES14 F2 population. Among the same earlier tested 230 primers, one SSR marker (Xgwm311) also amplified a fragment which is present in the resistant parent and in the resistant bulks, but absent in the susceptible parent and in the susceptible bulks. To understand the chromosome group location of these diagnostic markers, Xgwm382 and Xgwm311, in the same population, we selected 16 SSR markers mapped only in one genome of chromosome group 2 around 1-21 cM distance to these diagnostic markers based on the SSR consensus map of wheat. Out of 16 SSRs, Xwmc658 identified resistant F2 individuals as a diagnostic marker for yellow rust disease and provided the location of Xgwm382 and Xgwm311 on chromosome 2AL in our plant material.
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Affiliation(s)
- F Senturk Akfirat
- Department of Molecular Biology and Genetics, Gebze Institute of Technology, Cayirova Campus, 41700, Gebze, Kocaeli, Turkey
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Hakeem KR, Chandna R, Ahmad A, Qureshi MI, Iqbal M. Proteomic analysis for low and high nitrogen-responsive proteins in the leaves of rice genotypes grown at three nitrogen levels. Appl Biochem Biotechnol 2012; 168:834-50. [PMID: 22903322 DOI: 10.1007/s12010-012-9823-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2012] [Accepted: 08/01/2012] [Indexed: 11/29/2022]
Abstract
Nitrogen (N) is an essential nutrient for plants. Increase in crop production is associated with increase in N fertilizers. Excessive use of N fertilizers and the low nitrogen utilization efficiency by crop plants is a major cause for environmental damage. Therefore, to reduce the N-fertilizer pollution, there is an urgent need to improve nitrogen use efficiency. Identification and/or development of genotypes which can grow and yield well at low nitrogen levels may provide a solution. Understanding the molecular mechanism of differential nitrogen use efficiency of the genotypes may provide some clues. Keeping the above facts in mind, in this study we have identified the high N-responsive and low N-responsive contrasting rice genotypes, out of 20 genotypes that were grown at low (1 mM), moderate (10 mM), and high (25 mM) levels of N (KNO(3)). Proteome analysis of leaves revealed that the proteins involved in the energy production/regulation and metabolism in plant leaf tissues are differentially expressed under N treatments. Moreover, some disease-resistant and stress-induced proteins were found to be overexpressed at high levels of N. The present study could be useful in identifying proteins responding to different levels of nitrogen fertilization, which may open new avenues for a better understanding of N use efficiency, and for developing new strategies to enhance N efficiency in cereal crops.
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Affiliation(s)
- Khalid Rehman Hakeem
- Department of Botany, Molecular Ecology Laboratory, Faculty of Science, Hamdard University, New Delhi 110062, India.
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