Vergleichende Physiologie löslicher Stickstoff-Speicherstoffe

Reinbothe, H.

doi:10.1007/978-3-642-94837-4_2

Cited by 11 publications

(2 citation statements)

References 69 publications

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“…Durmishidze and Khachidze (5) found that 15 to 40% of the total N in grapevines roots was represented by free amino acids and amides. Oland (13) reported that 80 to 90% of the soluble N in woody parts of apple trees is accounted for by arginine and amides, and that there is increasing evidence that arginine serves as the main form of storage N in many different types of woody plants (11,13,15). Correlations generally were higher between the amount of arginine in woody tissues and the level of N in the nutrient solution than between total free amino acids and the N level.…”

Section: Discussionmentioning

confidence: 99%

“…Limitations in using the level of total N or of nitrate N in a tissue for estimating the N needs of grapevines have been reported by Ulrich (16) and by Cook (4). Perennial woody plants recently have been shown to store much of their reserve N in soluble, low-molecular-wt compounds, especially amino acids and amides, in the bark and wood of roots and in above ground woody tissues (1,9,13,15). Kliewer (9) found that arginine is the main form of storage N in the grapevine, accounting for about 50 to 70% of the soluble N in roots, trunk, and canes just prior to budbreak.…”

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Arginine and Total Free Amino Acids As Indicators of the Nitrogen Status of Grapevines1

Kliewer

Cook

1971

J. Amer. Soc. Hort. Sci.

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Growth and composition of ‘Thompson Seedless’ rootings grown in a perelite-vermiculite mixture (1:1 v/v), and receiving Hoagland nutrient solutions containing 0, ½, 1, 2, 4, or 8 mM NO3 were investigated over a 3-year period. Dry wt, no. of nodes, and total leaf area per vine, trunk circumference, and chlorophyll concn in leaves increased linearily with increasing concn of NO3 from 0 to 4 mM, and then remained relatively constant at 4 and 8 mM. Control vines (no NO3) had significantly less area per leaf blade and dry wt per unit leaf area than vines receiving ½ to 8 mM NO3. However, among vines irrigated with ½ to 8 mM NO3 differences in leaf area and leaf wt were not statistically significant. Highly significant linear (correlation coefficients 0.76 to 0.98) and 4th degree polynomial (correlation coefficients 0.92 and 0.99) regression equations were obtained between the levels of NO3 in the nutrient solution and the concn of arginine in canes, trunk, and roots at 3 different stages of vine development; i.e., mid-dormancy, budbreak, and bloom. Total free amino acids and NO3 in petioles and leaf blades were also positively correlated with the level of N in the Hoagland solutions, and with each other. The increases in concn of arginine and total free amino acids (relative to the control) in various parts of vines irrigated with different levels of NO3 were greatest at bloom, followed by budbreak and then dormancy, and were generally in the order of roots>trunk>canes>leaves. The relative increases of arginine reserves in vines following budbreak was first from canes, then from trunk, and lastly from roots.

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