Search Results

15 results

  1. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 35

    Genetic mapping and characterization of the pale yellow (Py) locus responsible for accelerated senescence in dark tobacco

    PRAMOD S.; ADAMS A.; DAVIS G.; LUSSO M.; FREDERICK J.; XU D.
    Altria Client Services LLC, Product Design & Maintenance, Richmond, VA, U.S.A.
    In commercial dark tobacco varieties (Nicotiana tabacum L.), accelerated senescence trait not only helps reduce TSNAs that are otherwise accumulated during the yellowing process associated with traditional dark varieties but also, could benefit growers in ...
  2. CORESTA Meeting, Agronomy/Phytopathology, 2019, Victoria Falls, AP 49 (also presented at TSRC 2019)

    Nicotine variability of low nicotine cultivars versus normal nicotine cultivars

    LION K.; ADAMS A.; MORRIS W.; BROWN E.; IRVING B.; LUSSO M.; XU D.
    Altria Client Services LLC, Product Design & Maintenance, Richmond, VA, U.S.A.
    Nicotine is the most abundant alkaloid in cultivated tobacco (Nicotiana tabacum), typically constituting more than 90 % of total alkaloids. Recently, the U.S. Food and Drug Administration (FDA) issued an Advance Notice of Proposed Rulemaking (ANPRM) to ...
  3. TSRC, Tob. Sci. Res. Conf., 2019, 73, abstr. 071 (also presented at CORESTA SSPT2019)

    Nicotine variability of low nicotine cultivars versus normal nicotine cultivars

    LION K.; ADAMS A.; MORRIS W.; BROWN E.; IRVING B.; LUSSO M.; XU D.
    Altria Client Services, Richmond, VA, USA
    Nicotine is the most abundant alkaloid in cultivated tobacco (Nicotiana tabacum), typically constituting more than 90% of total alkaloids. Recently, the U.S. Food and Drug Administration (FDA) issued an Advance Notice of Proposed Rulemaking (ANPRM) to ...
  4. CORESTA Congress, Kunming, 2018, Agronomy/Phytopathology Groups, AP 25

    2017 stable reduced converter (SRC) dark tobacco crop

    LION K.; LUSSO M.; ADAMS A.; MORRIS W.; XU D.; WAREK U.; STRICKLAND J.A.
    Altria Client Services LLC, Research, Development & Regulatory Affairs, Richmond, VA, U.S.A.
    On January 23, 2017, FDA published “Tobacco Product Standard for N-nitrosonornicotine Level in Finished Smokeless Tobacco Products” in which they proposed an NNN ceiling of 1.0 ppm (DWB) through the end of product shelf life. During the past several ...
  5. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 07

    NNN levels in stable reduced converter (SRC) and low converter (LC) lines cured under conditions that favor NNN formation

    LUSSO M.F.; LION K.E.; ADAMS A.; MORRIS W.; WAREK U.; STRICKLAND J.A.
    Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.
    N-nitrosonornicotine (NNN), a tobacco specific nitrosamine (TSNA) found in cured leaf, filler and smoke, is formed by nornicotine nitrosation. We previously demonstrated a ~75 % reduction of cured leaf NNN content in Burley and dark tobaccos having stable ...
  6. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 08

    N-nitrosonornicotine reduction in dark tobacco varieties and smokeless product prototypes

    LUSSO M.F.; ADAMS A.; LEWIS B.; POYNER T.; LION K.E.; DELOACH L.; DANIELSON T.; FRANKE J.E.; WAREK U.; STRICKLAND J.A.
    Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.
    During the past decades there has been a substantial effort to reduce the level of the tobacco specific nitrosamine N-nitrosonornicotine (NNN) and its precursor nornicotine in tobacco and tobacco products. Research on the mechanism of nornicotine ...
  7. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, AP 26

    Combining gene expression, metabolomics, and conventional breeding to increase the nitrogen use efficiency of Burley tobacco

    KUDITHIPUDI C.; FREDERICK J.; XU D.; ADAMS A.; PRAMOD S.; WAREK U.; STRICKLAND J.A.
    Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.
    High rates of nitrogen fertilization are required currently for cultivation of Burley tobacco to achieve the desired leaf yields and qualities. However, Maryland type tobaccos are grown using a nitrogen fertilization rate that is ~60-70 % lower than that ...
  8. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 071

    NNN levels in stable reduced converter (SRC) and LC lines cured under conditions that favor NNN formation

    LUSSO M.F.; LION K.E.; ADAMS A.; MORRIS W.; WAREK U.; STRICKLAND J.A.
    Altria Client Services, Richmond, VA, USA
    N-nitrosonornicotine (NNN), a tobacco specific nitrosamine (TSNA) found in cured leaf, filler and smoke, is formed by nornicotine nitrosation. We previously demonstrated a ~75% reduction of cured leaf NNN content in burley and dark tobaccos having stable ...
  9. TSRC, Tob. Sci. Res. Conf., 2017, 71, abstr. 072

    N-nitrosonornicotine reduction in dark tobacco varieties and smokeless product prototypes

    LUSSO M.; ADAMS A.; LEWIS B.; POYNER T.; LION K.E.; DELOACH L.; DANIELSON T.; FRANKE J.E.; WAREK U.; STRICKLAND J.A.
    Altria Client Services, Richmond, VA, USA
    During the past decades there has been a substantial effort to reduce the level of the tobacco specific nitrosamine N-nitrosonornicotine (NNN) and its precursor nornicotine in tobacco and tobacco products. Research on the mechanism of nornicotine ...
  10. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 19

    Discovery of the Nic1 locus in Nicotiana tabacum L.

    ADAMS A.; PRAMOD S.; LUSSO M.; XU D.
    Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.
    In Nicotiana tabacum L., four major alkaloids, including nicotine, are synthesized. It has been known for some time that two independent loci, Nic1 and Nic2, are key biosynthetic regulators and that the effect of the Nic1 locus is about two-fold greater ...