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1
Role of peroxidases and glycosidases in regulation of sink size in developing seeds of Hibiscus esculentum
100%
Thaker V. S.
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1998
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tom 20
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nr 2
EN
Changes in peroxidases and glycosidases activities in cytoplasmic and ionically wall-bound fraction of developing seed of Hibiscus esculentum were studied. In both fractions, the activity of peroxiases assayed with ferulic acid and caffeic acid as a hydrogen donors, showed inverse correlation with the cell enlargement (sink size development phase). Activities of glycosidases, on the other hand, showed positive correlation with the sink development and sink filling period of the developing seed. The role of both the enzymes, glycosidases and peoxidase in seed development is discussed.
2
Turnover of cell wall components during sink development in seeds of three cotton genotypes
63%
Sharma R. K. , Thaker V. S.
Plant Breeding and Seed Science
|
2006
|
tom 53
3
Turnover of cell wall components during internode growth in Merremia emarginata
63%
Patel D. , Thaker V. S.
Acta Physiologiae Plantarum
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2004
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tom 26
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nr 3
4
Physiological and biochemical changes associated with cotton fiber development. VIII. Wall components
63%
Gokani S. J. , Thaker V. S.
|
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nr 4
5
Studies on cell wall loosening enzymes in hormone treated internodes of Merremia emarginata
63%
Patel D. , Thaker V. S.
Acta Physiologiae Plantarum
|
2004
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tom 26
|
nr 3
6
Influence of flowering time and fruiting pattern on yield components of three cotton genotypes
51%
Rabadia V. S. , Thaker V. S. , Singh Y. D.
Plant Breeding and Seed Science
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2006
|
tom 53
7
Physiological and biochemical changes associated with cotton fibre development. VII. Carbohydrate metabolism
51%
Thaker V. S. , Rabadia V. S. , Singh Y. D.
Acta Physiologiae Plantarum
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1999
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tom 21
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nr 1
EN
The relationship between growth and some enzymes of carbohydrate metabolism in developing cotton fibre were studied. Two respiratory pathways of glucose oxidation i.e. oxidative pentose phosphate pathway (OPPP) and glycolysis operates in the elongating cotton fibres and the extent of their operation varies with the demand for respiratory products. In this respect, hexokinase, G-6-PDH, 6PGDH, and MDH show increased activities during the period of rapid cell elongation and decreased activities when rate slows down. The conversion of PEP to malate and/or via a transhydrogenase system consisting of enzymes PEPC, MDH and NADP-MDH(d) may play a significant role in carbohydrate compartmentation of developing cotton fibre. As the rate of fibre growth slows down, a decline in enzyme activities, points to a shift in metabolic priorities.
8
Light and nitrate induction of nitrate reductase in kinetin- and gibberellic acid-treated mustard cotyledons
51%
Saroop S. , Thaker V. S. , Chanda S. V. , Singh Y. D.
|
|
nr 4
EN
Nitrate reductase activity in gibberellic acid and kinetin treated mustard (Brassica juncea Coss. cv. T-59 ‘Varuna’) seedlings, grown in the presence or absence of light and/or NO₃ was investigated. While both light and NO₃, alone could induce NR activity, their combination showed additive effects. Kinetin treatment significantly promoted both light- and NO₃- induced NR activities, assayed by either in vivo or in vitro techniques, whereas, gibberellic acid was almost ineffective. In the absence of both light and NO₃, however, phytohormones alone could not induce NR activity. Both light-induced and NO₃ induced NR fractions had a pH optima of 7.5, preferred NADH as an electron donor (NADH: NADPH ratio 2.5) and Km values for NO₃ was 0.2 mM. Actinomycin D, cycloheximide and tungstate were equally effective in suppressing the development of NR activity after exposure to light or NO₃. These results indicate that two independent NR fractions operate, with apparently identical properties but separate control mechanisms.
9
Physiological and biochemical changes associated with cotton fibre development. VI. Acid and alkaline phosphatases
51%
Thaker V. S. , Saroop S. , Vaishnav P. P. , Singh Y. D.
|
1996
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tom 18
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nr 2
10
Physiological and biological changes associated with sink development in cotton seeds. I. Glycosidases and water content
51%
Rabadia V. S. , Thaker V. S. , Singh Y. D.
|
2002
|
tom 46
|
nr 1
11
Physiological and biochemical changes associated with cotton fiber development. V. Acid invertase and sugars
51%
Thaker V. S. , Saroop S. , Vaishnav P. P. , Singh Y. D.
Acta Physiologiae Plantarum
|
1992
|
tom 14
|
nr 1
12
Influence of gibberellic acid on auxin biosynthesis and their effects on coleoptile elongation in garlic
51%
Sata S. J. , Gokani S. J. , Thaker V. S.
|
|
tom 24
|
nr 4
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