Exogenously supplied amino acids and water deficits inZea mays cultivars

Fertilizer Efficiency of Some Plant Growth Promoting Rhizobacteria for Plant Growth

“…Similar findings were reported in previous studies showing that application of PGPR may stimulate yield, growth and nutrient element uptake from soil in different plant species under stress plant growth conditions for different crops. Proline, alanine, serine and asparagine also delayed wilting of maize under stress conditions, proline, glycine, alanine, leucine, threonine, lysine, arginine, tryptophan and phenylalanine inhibited stomatal opening while histidine, methionine, aspartic acid, glutamic acid, asparagine and glutamine promoted stomatal opening of Vicia faba, histidine, proline, glutamine, methionine and glycine promoted calcium uptake in Phaseolus seedlings, proline relieved salt toxicity in barley plant lets by changing salt transport from root to shoot and increasing proline content increased K content and alleviated salt + stress effects on growth of Vigna radiate cultures (Thakur and Rai, 1985;Rai and Sharma, 1991;Rai and Rana, 1996;Lone et al, 1987;Kumar and Sharma, 1989).…”

Effects of amino acids on the growth and flowering of Eustoma grandiflorum under autotoxicity in closed hydroponic culture

“…When plants experience autotoxicity, ion uptake and hydraulic conductivity are inhibited since root is the first organ to come into contact with autotoxins in the rhizosphere (Blum et al, 1999). Several researchers found positive impacts of amino acids as foliar spray under stress condition for example, Pro to wheat, Pro, Ala, Ser and Asp to maize under osmotic stress (Rajagopal and Sinha, 1980;Thakur and Rai, 1985) and Pro, Phe to maize and board bean under salinity stress (Abd El-Samad et al, 2011). Pro is the most widely studied because of its considerable importance in the stress tolerance as compatible osmolyte (McCue and Hanson, 1990;Samaras et al, 1995;Delauney and Verma, 1993).…”

Role of proline under changing environments

“…73 Subsequently Rajagopal 72 showed that in Vicia faba exogenous proline decreased stomatal conductance and also increased uptake of exogenous proline into leaves. However, Thakur and Rai 152 observed that exogenous application of alanine, serine and asparagine also delayed wilting under stress conditions in maize. Exogenous proline inhibited stomatal opening in Vicia faba whereas other amino acids such as histidine, methionine, aspartic acid, glutamic acid, asparagine and gutamine promoted stomatal opening.…”