Katsuhisa Furuhashi

Nitrogen sources for the growth of rice callus tissue

Abstract In the preceding paper (1) the authors described the effect of some conditions on the growth of rice callus tissue. These included the effects of various kinds of sugars, 2, 4-D and yeast extract. In this paper, the availability of different types of nitrogen sources are discussed.

Amino acid composition of rice callus tissue grown with different kinds of nitrogen sources

Abstract There have been several papers dealing with the difference in chemical composition between callus tissue and normal parent tissue. WEINSTEIN, TULECKE, NICKELL, and LAURENCOT (1–3) revealed, in a series of papers, that the contents of amino acids, sugars, and nucleic acids often differed strikingly between callus and normal tissue of Agave toumeyana Trel. (1), Ginkgo biloba, L. (2), and PAULs scarlet rose (3). STEWARD, THOMPSON, and POLLARD (4) also reported that the content of some amino acids of rapidly growing and randomly proliferating tissue is outstandingly different from that of normal tissue.

Utilization of arginine dy rice callus tissue

Abstract Arginine is widespread in the plant kingdom, sometimes accumulated in high concentrations. Information on the accumulation of arginine has been obtained with ammonium-excess rice plants (9), potassium-deficient rice plants (8), phosphorus-deficient mulberry leaves (4), and loblolly pines grown with urea (14). The amount of arginine in plants varies widely. In young apple trees arginine is the most important compound to store nitrogen. However it is reduced when new growth occurrs (13). Vernalized wheat loses its arginine content, a major constituent of the soluble amino acid content of untreated wheat (18). On germination, beans decreases the amount of arginine (1). In tulips the nitrogen economy revolves around arginine (20).

The effect of ornithine and citrulline on tile utilization of arginine in rice callus tissue

Abstract There are many reports on the effect of arginine on the growth of cultivated tissues or organs. Arginine usually enhances the growth of tissues and organs (1-9).

Availability of several kinds of nitrogenous compounds for the growth of callus tissues from Daucus Carota L., Datura Stramonium L., Pelargonium Inquinans Ait., and Oryza Sativa L.

Abstract Plants frequently accumulate or reserve some organic nitrogenous substances of small molecules, when supplied with inorganic nitrogenous compounds in excess. It is well known that rice plants in the field accumulate asparagine when supplied with ammonium salts in excess. This phenomenon is effectively utilized as a criteria for adequate supply of nitrogen fertilizers in the field (1). Accumulation of asparagine has also been generally recognized among seedlings of various plant species grown with excess ammonium, nitrate or urea (2). With rye grass, glutamine was reported to be accumulated in leaves and sometimes excreted when ammonium sulfate was supplied in excess (3). Arginine is a major free amino acid accumulating in nitrogen fertilized apple trees (4), phosphate-deficient mulberries (5), and potassium deficient rice plants (6). Allantoin is known to be a reserve form of nitrogen in some families of higher plants, notably the Aceraceae, Leguminosae and Boraginaceae (7,8). Thus the form of re...