TY - JOUR
T1 - Alfalfa saponins and microbial transformations of nitrogen in peat
AU - Levanon, Dan
AU - Henis, Yigal
AU - Okon, Yaacov
AU - Dovrat, Amos
PY - 1982
Y1 - 1982
N2 - Alfalfa saponins, their sugar fraction or glucose, but not their sapogenin fraction, favored nitrogen immobilization and denitrification and inhibited proteolysis and ammonification in both peatinoculated and Pseudomonas sp.-inoculated media. Alfalfa root saponins and sapogenins significantly reduced the fungal peat population, but did not affect the bacterial population. The inhibition of N mineralization in peat by saponins and by their sapogenin fraction during dry and wet cycles was mostly due to their fungistatic activity. The inhibitory effect of the sugar fraction of alfalfa roots on mineral-N accumulation in peat is mainly under moist conditions.
AB - Alfalfa saponins, their sugar fraction or glucose, but not their sapogenin fraction, favored nitrogen immobilization and denitrification and inhibited proteolysis and ammonification in both peatinoculated and Pseudomonas sp.-inoculated media. Alfalfa root saponins and sapogenins significantly reduced the fungal peat population, but did not affect the bacterial population. The inhibition of N mineralization in peat by saponins and by their sapogenin fraction during dry and wet cycles was mostly due to their fungistatic activity. The inhibitory effect of the sugar fraction of alfalfa roots on mineral-N accumulation in peat is mainly under moist conditions.
UR - http://www.scopus.com/inward/record.url?scp=0020384196&partnerID=8YFLogxK
U2 - 10.1016/0038-0717(82)90110-9
DO - 10.1016/0038-0717(82)90110-9
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:0020384196
SN - 0038-0717
VL - 14
SP - 501
EP - 504
JO - Soil Biology and Biochemistry
JF - Soil Biology and Biochemistry
IS - 5
ER -