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Mechanism of male sterility in Petunia - II. Free amino acids in male fertile and male sterile anthers during microsporogenesis
Year:
1973
Source of publication :
Theoretical and Applied Genetics
Authors :
Frankel, Rafael
;
.
Izhar, Shamay
;
.
Volume :
43
Co-Authors:
Izhar, S., Div. of Plant Genetics and Breeding, The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Frankel, R., Div. of Plant Genetics and Breeding, The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Facilitators :
From page:
13
To page:
17
(
Total pages:
5
)
Abstract:
The free amino acid contents in the anthers of male fertile, cytoplasmic male sterile (cms) and genic male sterile (gms) petunia lines were compared at different developmental stages of the male gametophyte. Quantitative differences in the amounts of free amino acids were found between the fertile and male sterile lines and between the cms and gms lines. The differences between the sterile lines were correlated with the different developmental stages at which the breakdown in microsporogenesis occurred. In the Rosy Morn (RM) cms line, where breakdown of microsporogenesis occurred at the end of prophase 1, there was an associated increase in asparagine and decrease in the other amino acids. In the RM gms line, in which breakdown occurred at the tetrad stage, an accumulation of asparagine in the anthers corresponded with an accumulation of glutamine beginning at prophase 1. Compared with fertile anthers, the sterile anthers accumulated much proline at the early meiotic stages, but no γ-aminobutyric acid. Comparison of the free amino acids of the fertile and the male sterile lines indicates that certain biochemical events leading to breakdown of microsporogenesis precede the observed cytological breakdown. The results from adding asparagine and glutamine to extracts of anthers at different developmental stages suggest that the amino acid balance may contribute to the changes in pH in the fertile and male sterile anthers which we observed previously. © 1973 Springer-Verlag.
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DOI :
10.1007/BF00277826
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21099
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:41
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Scientific Publication
Mechanism of male sterility in Petunia - II. Free amino acids in male fertile and male sterile anthers during microsporogenesis
43
Izhar, S., Div. of Plant Genetics and Breeding, The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Frankel, R., Div. of Plant Genetics and Breeding, The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Mechanism of male sterility in Petunia - II. Free amino acids in male fertile and male sterile anthers during microsporogenesis
The free amino acid contents in the anthers of male fertile, cytoplasmic male sterile (cms) and genic male sterile (gms) petunia lines were compared at different developmental stages of the male gametophyte. Quantitative differences in the amounts of free amino acids were found between the fertile and male sterile lines and between the cms and gms lines. The differences between the sterile lines were correlated with the different developmental stages at which the breakdown in microsporogenesis occurred. In the Rosy Morn (RM) cms line, where breakdown of microsporogenesis occurred at the end of prophase 1, there was an associated increase in asparagine and decrease in the other amino acids. In the RM gms line, in which breakdown occurred at the tetrad stage, an accumulation of asparagine in the anthers corresponded with an accumulation of glutamine beginning at prophase 1. Compared with fertile anthers, the sterile anthers accumulated much proline at the early meiotic stages, but no γ-aminobutyric acid. Comparison of the free amino acids of the fertile and the male sterile lines indicates that certain biochemical events leading to breakdown of microsporogenesis precede the observed cytological breakdown. The results from adding asparagine and glutamine to extracts of anthers at different developmental stages suggest that the amino acid balance may contribute to the changes in pH in the fertile and male sterile anthers which we observed previously. © 1973 Springer-Verlag.
Scientific Publication
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