American Journal of Plant Sciences (AJPS)

Publisher: Scientific Research Publishing

Journal description

American Journal of Plant Sciences is a peer reviewed international journal dedicated to the latest advancement of plant science. The goal of this journal is to keep a record of the state-of-the-art research and to promote study, research and improvement within its various specialties. All manuscripts submitted to AJPS must be previously unpublished and may not be considered for publication elsewhere at any time during JPS's review period. Additionally, accepted ones will immediately appear online followed by printed in hard copy.

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ISSN 2158-2742

Publisher details

Scientific Research Publishing

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • On any website or open access repository
    • Must link to publisher version or article's DOI
    • Published source must be acknowledged with citation
    • Publisher's version/PDF may be used
    • Creative Commons Attribution License
    • Creative Commons Attribution Non-Commercial License available on request
    • All titles are open access journals
  • Classification
    ​ green

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Nitrogen is the most important macronutrient needed for plant growth and development. The availability of nitrogen in the soil fluctuates greatly in both time and space. Crop plants, except leguminous plants, depend on supply of nitrogen as fertilizers. Large quantities of nitrogen fertilizers are applied to crop plants, but only 33% of it is utilized by the plant. Plants have developed efficient mechanisms to sense the varying levels of nitrogen forms and uptake them. They also have well developed mechanisms to assimilate the incoming nitrogen immediately or translocate to different parts of the plant wherever it is needed. Maintenance of nitrogen homeostasis is essential to avoid toxicity. Apart from translocation and assimilation, plants have developed different mechanisms, nitrogen efflux; vacuolar nitrogen storage and downward transport of nitrogen from aerial parts to roots, for maintaining nitrogen homeostasis. In crop plants the “grain yield per unit of available nitrogen in the soil” is referred as the nitrogen use efficiency (NUE) for which remobilization of nitrogen, mediated by various transporters plays a crucial role. All these processes are tightly regulated by proteins and microRNA in response to both external and internal nitrogen levels, carbon status of the plant and hormones. As most crop plants are non-leguminous and depend on soil nitrogen, more production could be achieved if crop plants can be made to utilize the available nitrogen efficiently. The recent explosion of research information and the mechanisms behind nitrogen sensing, signaling, transport and utilization enables biotechnological interventions for better nitrogen nutrition of crop plants. This review discusses such possibilities in the context of recent understanding of nitrogen nutrition and the genomic revolution sweeping the crop science.
    American Journal of Plant Sciences 10/2015; 6(16):in press.
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    ABSTRACT: The objectives of this study were to evaluate the genetic diversity of the peanut accessions using Random Amplified Polymorphic DNA (RAPD) molecular marker and to evaluate RAPD markers to be used in peanut as genetic markers and improve such techniques as suitable strategies for peanut germplasm characterization. Twenty peanut accessions were included in this study and were subjected to RAPD molecular markers analysis. Twenty-seven RAPD primers produced 210 amplification products of which 80 (36.4%) were polymorphic. In conclusion, this study reported a successful fingerprinting of peanut accessions using RAPD markers and demonstrated the usefulness of these markers in estimating the extent of genetic variation in peanut germplasm.
    American Journal of Plant Sciences 09/2015; 6(14):2303-2308. DOI:10.4236/ajps.2015.614233
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    ABSTRACT: The fungus U. virens is the causal agent of rice false smut disease. The green fluorescent protein (GFP) was used to mark this fungus in order to visualize and analyze the colonization and infection processes in vivo. Using epifluorescence microscopy colonization and infection on rice roots were visualized in vivo. After inoculation for 2 to 15 d, it was observed that the conidia and their germ-tubes had penetrated into epidermis of young roots. The hyphae were found inside the root xylem 18 d after inoculation. Generally, the transformed fungus colonized the rhizosphere, the cortex as well as the vascular tissues with symptoms of root necrosis observed. The results of this work show that U. virens colonize not only rice panicles but also the roots.
    American Journal of Plant Sciences 09/2015; DOI:10.4236/ajps.2015.614230
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    ABSTRACT: To track the selection evident along the genome segment of OsLEA27 gene, a member of dehydrin gene family, 2.9-kbp nucleotide sequence containing the promoter 5’ upstream and transcribed region of OsLEA27 was determined for 35 upland and dryland Myanmar landraces from droughtprone areas. Nucleotide diversity, neutrality tests, haplotype network analysis, and linkage disequilibrium (LD) analysis were performed to infer the impact of selection and to investigate nonrandom associations of SNPs within all or part of the entire OsLEA27 region. The evidence for LD, the presence of two distinct haplotype groups across four different geographical regions, and the significant values obtained in a sliding-window analysis of mutation-drift tests all suggest the effects of selection on OsLEA27 in a set of 30 landraces. The neutrality test values for 5’ upstream region of OsLEA27 were significantly negative (p < 0.05) within the set of 30 accessions. The entire OsLEA27 region was significantly negative in accessions of the northern group, indicating a recent increase in population size or selection pressure. This evidence for selection signatures at Os- LEA27 in this study sample provides insight into the roles of selection, crop adaptation, and genetic diversity in establishing present-day variation at the OsLEA27 locus.
    American Journal of Plant Sciences 08/2015; 06(12). DOI:10.4236/ajps.2015.612195