Effect of nitrate and humic substances of different molecular size on kinetic parameters of nitrate uptake in wheat seedlings

EurJOC around the Clock

“…The LMW had a post‐transcriptional effect on polypeptide synthesis, which could affect overall plant nutrition. This mechanism is in line with older and more recent studies that showed that HS (both HMW and LMW fractions) stimulated NO $ _3^ - $ uptake by promoting the expression of nitrate carrier proteins and modifying some kinetic parameters ( Cacco et al, 2000). Moreover, Nardi et al (2000a) showed that maize seedlings treated with a LMW also increased nitrate uptake and strongly inhibited H + extrusion and ATPase in maize microsomes.…”

Breeding for increased nitrogen‐use efficiency: a review for wheat (T. aestivum L.)

“…In addition, it has also to be considered that under agronomic conditions, both efficiency and the regulation of NO 3 − ‐uptake systems may be enhanced by the presence of mycorrhizal associations (Hawkins and George ), humic substances (Cacco et al. ), allelopathic compounds such as coumarin (Abenavoli et al. ) and plant root growth‐promoting bacteria (Mantelin and Touraine ) or inhibited when the CO 2 concentration is rising in the atmosphere (Bloom et al.…”

“…In addition, it has also to be considered that under agronomic conditions, both efficiency and the regulation of NO 3 À -uptake systems may be enhanced by the presence of mycorrhizal associations (Hawkins and George 2001), humic substances (Cacco et al 2000), allelopathic compounds such as coumarin (Abenavoli et al 2001) and plant root growth-promoting bacteria (Mantelin and Touraine 2004) or inhibited when the CO 2 con-centration is rising in the atmosphere (Bloom et al 2014). Therefore, when studying the genetic basic of inorganic N uptake, environmental interactions must be taken into account together with the capacity of the plant to capture and transport NO 3 À or NH 4 + .…”

Influence of Foliar Fertilization with Amino Acids and Humic Acids on Productivity and Quality of Asparagus

“…In this respect, there are effects on uptake of macronutrients and micronutrients (Albuzio et al, 1986;Lobartoni & Orioli, 1988;Mishra & Srivastava, 1988;Rzaev et al, 1989;Chen & Aviad, 1990;Piccolo et al, 1993;Mackowiak et al, 2001), photosynthesis (Zimmerman, 1981;Vaughan & Malcolm, 1985;Nardi et al, 1991) protein and nucleic acid synthesis (Vaughan & Malcolm, 1985;Maggioni et al, 1987;Durante et al, 1992), and enzyme activities such as phosphatase (Malcolm & Vaughan, 1979a, 1979b, invertase (Concheri et al, 1992) peroxidase (Concheri et al, 1992;Retta et al, 1992) and nitrate reductase (Albuzio et al, 1986;Cacco et al, 2000). Humic matter may also modulate the activity of H+ -ATPase of both plasmalema and tonoplast H+-ATPases.…”