Abstract
Taking into account all information about GABA in different plants we tried to find out some of the fundamental roles of GABA in grapevines: Its dynamic in different plant organs including vegetative and generative ones as well as dependencies on exogenous factors. AA dynamic in one year old wood was confirmed according former findings; N nutritional status of the vine has an important influence on stored amounts of Arg, Gln, Glu and GABA. Shoots shows relatively low contents of all determined AAs; highest amounts are found with Ala, Gln and Glu. Fertilization increases Gln and Glu. Highest amounts of al AAs are found in emerging and developing leaves; GABA has highest amounts besides Glu. The influence of N fertilization is obvious. In developing fruits main AA is Gln; role of GABA is just unclear. GABA synthesis seems to be dependent on GDD and on N nutritional status of the grapevine. In further research work more emphasis has to be laid on the influence of exogenous factors like water, light and also diseases. The relationship on wine quality is still open but the by-products of GABA-shunt should be shifted in the focus of wine makers and wine microbiologists.
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Claims 9
Claim · model-written summary
Nitrogen nutritional status influences stored Arg, Gln, Glu and GABA in one-year-old vine wood.
VitisNot reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N nutritional status of the vine has an important influence on stored amounts of Arg, Gln, Glu and GABA.”
t0“Grapevines”
Claim · model-written summary
Shoots had relatively low contents of all measured amino acids.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Shoots shows relatively low contents of all determined AAs; highest amounts are found with Ala, Gln and Glu.”
t0“Grapevines”
Claim · model-written summary
Ala, Gln and Glu had the highest amounts in shoots.
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest amounts are found with Ala, Gln and Glu.”
t0“Grapevines”
Claim · model-written summary
Fertilization increased Gln and Glu.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilization increases Gln and Glu.”
t0“Grapevines”
Claim · model-written summary
Emerging and developing leaves had the highest amounts of all amino acids.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest amounts of al AAs are found in emerging and developing leaves; GABA has highest amounts besides Glu.”
t0“Grapevines”
Claim · model-written summary
GABA and Glu were most abundant in emerging and developing leaves.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GABA has highest amounts besides Glu.”
t0“Grapevines”
Claim · model-written summary
Nitrogen fertilization influenced amino acid amounts in leaves.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The influence of N fertilization is obvious.”
t0“Grapevines”
Claim · model-written summary
Gln was the main amino acid in developing fruits.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In developing fruits main AA is Gln; role of GABA is just unclear.”
t0“Grapevines”
Claim · model-written summary
GABA synthesis appears dependent on GDD and nitrogen nutritional status.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“GABA synthesis seems to be dependent on GDD and on N nutritional status of the grapevine.”