חיפוש מתקדם
Journal of Insect Physiology
Raccah, B., Israel Institute for Biological Research, Ness-Ziona, Israel
Applebaum, S.W., The Hebrew University-Rehovot Campus, Rehovot, Israel
Tahori, A.S., Israel Institute for Biological Research, Ness-Ziona, Israel
The rôle of folic acid in wing formation was studied using amino-pterin-a folic acid antagonist. The effects of this antivitamin are acute: larviposition ceases in adults and wing formation is depressed in developing larvae. At lower concentrations graded responses are obtained. Omission of methionine and histidine had no effect on wing formation but thymidine did ameliorate the depression of wing formation by aminopterin. Aminopterin is known to inhibit dihydrofolate reductase-thereby inhibiting tetrahydrofolate production. Tetrahydrofolate is known to be involved in thymidine biosynthesis. The activity of dihydrofolate reductase in presumptive alates was 42 per cent higher than in larvae destined to develop as apterates. The significance of folic acid metabolism in wing formation is discussed. © 1973.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
The rôle of folic acid in the appearance of alate forms in Myzus persicae
19
Raccah, B., Israel Institute for Biological Research, Ness-Ziona, Israel
Applebaum, S.W., The Hebrew University-Rehovot Campus, Rehovot, Israel
Tahori, A.S., Israel Institute for Biological Research, Ness-Ziona, Israel
The rôle of folic acid in the appearance of alate forms in Myzus persicae
The rôle of folic acid in wing formation was studied using amino-pterin-a folic acid antagonist. The effects of this antivitamin are acute: larviposition ceases in adults and wing formation is depressed in developing larvae. At lower concentrations graded responses are obtained. Omission of methionine and histidine had no effect on wing formation but thymidine did ameliorate the depression of wing formation by aminopterin. Aminopterin is known to inhibit dihydrofolate reductase-thereby inhibiting tetrahydrofolate production. Tetrahydrofolate is known to be involved in thymidine biosynthesis. The activity of dihydrofolate reductase in presumptive alates was 42 per cent higher than in larvae destined to develop as apterates. The significance of folic acid metabolism in wing formation is discussed. © 1973.
Scientific Publication
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