By Christine Foyer, Hanma Zhang
Nitrogen Metabolism in vegetation presents a normal heritage and evaluation of nitrogen acquisition in crops and provides a complete description of contemporary advances in our knowing of either nitrogen assimilation and nitrogen fixation utilizing new applied sciences. this crucial new publication covers many very important features, together with shipping structures, regulatory and signaling mechanisms, plant improvement and senescence, and metabolic cross-talk among nitrogen assimilation and different metabolic pathways. a part of Wiley-Blackwell's hugely acclaimed and profitable Annual Plant stories, this new quantity is a necessary buy for all plant scientists.
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Additional info for Nitrogen Metabolism in Plants in the Post-genomic Era
Bellucci et al. (2004) used an NH4 + -dependent AS gene from E. coli to transform L. corniculatus. Those plants that expressed the gene were also characterized by reduced growth and premature flowering. , 2004). Good et al. (2007) transformed canola (Brassica napus) with an alanine dehydrogenase cDNA under the control of a root-specific promoter. The transgenic plants had increased biomass and seed yield, both in the laboratory and the field, under low N conditions, whereas no differences were observed under high N.
1978; Murray & Kennedy, 1980; Chang & Farnden, 1981). Sodek et al. (1980) then described an asparaginase in both the testa and maturing cotyledons of peas that was totally dependent on the presence of potassium (K+ ) ions. The asparaginase in developing soybean cotyledons was also shown to be K+ dependent (Gomes & Sodek, 1984; Tonin & Sodek, 1990). , 1988). , 1978; Sodek & Lea, 1993). Lough et al. (1992a) went on to show that when asparaginase was purified from Lupinus arboreus seeds, although the native molecular mass was 75 kDa, three polypeptides in the range 14–19 kDa were present following SDS gel electrophoresis.
Recently, Miyashita and Good (2008), using the same mutant stocks, have constructed the double mutant gdh1/gdh2 and studied this as well as the single mutants separately. The double mutant has no detectable GDH protein or activity. They grow and reproduce under normal growth conditions without a visible phenotype. The mutations have no effect on the ability of the plants to grow on inorganic N, but the gdh2 and gdh1/gdh2 mutants are impaired in their ability to grow on glutamate as an N source.
Nitrogen Metabolism in Plants in the Post-genomic Era by Christine Foyer, Hanma Zhang