Bao-Yun Li

China Agricultural University, Peping, Beijing, China

Are you Bao-Yun Li?

Claim your profile

Publications (5)1.64 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Drought stress is one of the major factors affecting in wheat yield and grain quality. In order to investigate how drought stress might influence wheat quality during grain filling, three wheat cultivars Gaocheng 8901, Jagger and Nongda 3406 were subjected to drought stress during the grain filling stage. Neither globulin and glutenin, nor the relative percentage of amylose significantly changed following drought treatments, whereas albumin and gliadin concentrations did. The SDS-sedimentation, which has a strong linear correlation with wheat baking quality was markedly decreased following drought stress. These results indicated that drought had an adverse effect on wheat quality. In order to investigate the protein complexes in the wheat flour, the data from native PAGE and SDS-PAGE were combined and a total of 14 spots were successfully identified, and of these eight protein types were determined to be potential complex forming proteins.
    Journal of Integrative Agriculture. 05/2014; 13(5):919–925.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Polyphenol oxidase (PPO) is often regarded as a major factor resulting in time-dependent darkening and discoloration of Asian noodles and other wheat end products. To understand the relationship between variation of PPO genes and PPO activity of seed, the three PPO genes, which express in immature wheat grain, were investigated in 216 common wheat cultivars. The results indicated that only TaPPO-A1 and TaPPO-D1 showed high polymorphisms related to PPO activity. Two alleles in both TaPPO-A1 (TaPPO-A1a and TaPPO-A1b) and TaPPO-D1 (TaPPO-D1a and TaPPO-D1b) were detected using denaturing polyacrylamide gel electrophoresis. Wheat cultivars with TaPPO-A1b usually showed higher PPO activity than those with TaPPO-A1a. The TaPPO-D1a allele was often found in lower-PPO-activity cultivars, compared with TaPPO-D1b. The sequencing results of DNA fragments confirmed that two introns existed in TaPPO-D1 like TaPPO-A1. Some variation of introns was detected in the two alleles of TaPPO-D1. During seed development, the high-PPO-activity cultivar, Yangmai 158 (TaPPO-A1b/TaPPO-D1b) showed higher transcription of the two PPO genes, in comparison to low-activity cultivar, Yongchuanbaimai (TaPPO-A1a/TaPPO-D1a). These results suggested that variation in introns may influence the transcription of TaPPO-A1 and TaPPO-D1 in immature seeds of wheat.
    Euphytica 01/2007; 154(1):181-193. · 1.64 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Fourteen wheat cultivars were identified into six types of Wx proteins combinations using 6% SDS-PAGE. PCR primers were designed according to the three Wx genes sequences and their mutants, respectively. A 327 bp-band was amplified from the Wx-A1 mutant,while the band was absent for the normal alleles at the Wx-A1 locus,as well as the presence or absence of a 187 bp PCR fragment at the Wx-B1 locus and a 700 bp PCR fragment at the Wx-D1 locus, respectively, corresponding to the normal and mutant alleles. Compared with the former studies, shorter and more different PCR products at three loci, amplified by the primers designed for Wx-B1 gene can be separated in 2% agarose gel, which enables screening breeding lines for noodle use faster and effectively.
    Acta Genetica Sinica 02/2004; 31(1):81-6.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Random amplified polymorphic DNA (RAPD) analysis was performed on common wheat Chinese Spring, H. villosa, addition lines of H. villosa chromosome in CS, substitution line 3V of H. villosa chromosome in Triticum aestivum. A genome specific polymorphic DNA segment from H. villosa, OPF02757, was obtained. On the basis of cloning and sequencing of OPF02757, two PCR primers were designed and a genome specific PCR marker for H. villosa was established. The PCR marker including 677 bp was localized on all the seven pairs of H. villosa chromosomes. The result of PCR amplification by the primers indicated that there was a specific band of 677 bp in the materials containing H. villosa Chromosome such as T. aestivum-H. villosa addition, T. aestivum-H. villosa substitution, T. aestivum-H. villosa amphidiploid, T. durum-H. villosa amphidiploid and H. villosum from different accessions, and there was no specific band of 677 bp if the materials did not contain H. villosa chromosome, such as T. aestivum, T. durum, Secale cereale, Hordeum vulgare, Thinopyrum elongatum, Thinopyrum intermedium. Therefore, the PCR maker of 677 bp is specific to H. villosa genome, and could be used as molecular marker for detection of chromosomes of H. villosa in wheat.
    Acta Genetica Sinica 05/2003; 30(4):350-6.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Random amplified polymorphic DNA (RAPD) analysis was performed on common wheat of Chinese Spring, addition lines of H. villosa chromosome in CS and H. villosum from different accessions with 100 random 10-base primers. A chromosome-specific polymorphic DNA segment for H. villosa, OPF02(750), was obtained from all addition lines of H. villosa chromosome in CS and H. villosum which belong to different accessions. The result amplified by primer OPF02 of all addition lines of H. villosa chromosome in CS indicated that all the seven pairs of H. villosa chromosomes contain OPF02(750) segment. There was no OPF02(750) in all Triticum aestivum and T. durum tested. Using OPF02, We confirmed that NAU302, an addition line of H. villosa chromosome 3V, had lost its chromosome 3V of H. villosa. Therefore, OPF02(750) is specific to chromosomes of H. villosa, and could be used as a molecular marker for detection of chromosome of H. villosa in wheat.
    Acta Genetica Sinica 06/2002; 29(5):453-7.

Publication Stats

13 Citations
1.64 Total Impact Points

Top Journals

Institutions

  • 2002–2014
    • China Agricultural University
      • Department of Plant Breeding and Genetics
      Peping, Beijing, China