Dehydrogenase Pattern in Bean Seed Embryo*

Oota, Yukito; Yamamoto, Yukio; Fujii, R.

doi:10.1093/oxfordjournals.jbchem.a126357

Cited by 29 publications

(10 citation statements)

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“…Our earlier suggestion (18. (18,19,28,29). However, only the EMP patllway anld the glyoxylate cycle will l)e functionial wvith the low value of the TPN+TPNH ,DPN+DPNH ratio.…”

Section: Methodsmentioning

confidence: 99%

“…(1) (11) (1) (111) (1) (20) (1) (77) (1) (76) ( (18,28). Of interest is the fact that in both organs all DPN is in the oxidized form and TPN is partly in the reduced form.…”

Section: Methodsmentioning

confidence: 99%

“…The growing part hlas the protein portions of enizymes of EMP pathway, pentose pliosphate cycle, TCA cycle (18,19,28 It is well known that in the higher plant the organs and tissues of different ages are coexistent on the same individual: the PN levels thus seem to be an ingenious factor for regulating the metabolismii in each part.…”

Section: Methodsmentioning

confidence: 99%

“…

…”

mentioning

confidence: 93%

“…The storage organ will generally be older in physiological age than the growing part. Comparisons between the storage organ and the growing part in metabolic activities (13,18,19,24, 28) …”

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confidence: 99%

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Pyridine Nucleotide Content in the Higher Plant. Effect of Age of Tissue

Yamamoto

1963

Plant Physiol.

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We noticed in previous work (18, 28) that, in the cotyledon of Vigna sesquipedalis in the germination stage, isocitric acid may be metabolized preferentially through the glyoxylate cycle rather than the TCA3 cycle because of the lack of endogenous TPN; whereas in the growing parts such as plumule, hypocotyl. and radicle, it is probably metabolized through the TCA cycle in accordance with an expected high level of TPN. Thus the TPN level was an important factor for selection of the metabolic pattern. However, the importance of this finding will depend upon whether or not it is a general phenomenon in all plants.Recently the domiinancy of the glyoxylate cycle in the storage organ. i.e.. cotyledlons in some kinds of seeds and endosperm in others., has been indlicated for various plants by several workers (2,4,5,6,16,26,27, 28,29). It is, therefore, tempting to compare the endogenous TPN concentration of the storage organ with that of the growing part in various plants.However, further problems have arisen concerning the above.I. Only in cases where the levels of PN are a rate-limiting factor for the plant metabolism, will those levels play a key role. Thus the first problem is whether TPN+TPNH and DPN+DPNH amounts are a rate-limiting factor for the metabolism of various plant tissues.II. The storage organ will generally be older in physiological age than the growing part. Comparisons between the storage organ and the growing part in metabolic activities (13,18,19,24, 28)

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“…Our earlier suggestion (18. (18,19,28,29). However, only the EMP patllway anld the glyoxylate cycle will l)e functionial wvith the low value of the TPN+TPNH ,DPN+DPNH ratio.…”

Section: Methodsmentioning

confidence: 99%

“…(1) (11) (1) (111) (1) (20) (1) (77) (1) (76) ( (18,28). Of interest is the fact that in both organs all DPN is in the oxidized form and TPN is partly in the reduced form.…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…

…”

mentioning

confidence: 93%

“…The storage organ will generally be older in physiological age than the growing part. Comparisons between the storage organ and the growing part in metabolic activities (13,18,19,24, 28) …”

mentioning

confidence: 99%

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Pyridine Nucleotide Content in the Higher Plant. Effect of Age of Tissue

Yamamoto

1963

Plant Physiol.

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Studies on the phytotoxic effects of some organotin(IV) compounds on the germination of the mung bean seed, Phaseolus aureus

Balabaskaran

Tilakavati

Das

1987

Applied Organom Chemis

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A selected range of organotin(1V) compounds of formula R,SnX,-, (x=2 or 3; R=alkyl, cycloalkyl or aryl), as well as the adducts, (p-ZC,H,),SnCI. Ph,PO (Z= H, Me) were examined in vivo for their phytotoxic effects relative to the more powerful s-triazine herbicides against the mung bean seed, Phaseofus aureus. Phytotoxicity was assessed in terms of changes in (a) weights of primary leaves, (b) weights of cotyledons, (c) seedling heights and (d) root morphology. The triorganotin compounds were more phytotoxic than the diorganotins, and within the R,Sn structural class, inhibitory potency was greater for alkyltins than for aryltins. Decreasing the alkyl chain lengths or placing electrondonating substituents on the aromatic rings increased the phytotoxicity. A significant phytotoxic effect, comparable with that of Ph,SnCI, was manifested by tricyclohexyltin chloride, in marked contrast to the well-known low phytotoxicity of tricyclohexyltin hydroxide.Using Ph,SnCI as the model compound, it was further demonstrated that the total chlorophyll content decreased with increasing concentrations of Ph,SnCl, but the ratio of chlorophyll a to chlorophyll b was constant. It was also found that tin uptake in the seedlings was directly proportional to Ph,SnCI test concentrations; the magnesium and iron levels in the treated seedlings, however, were unchanged relative to the control.

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Seed Germination

Copeland¹,

McDonald²

2001

Principles of Seed Science and Technology

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Dehydrogenase Pattern in Bean Seed Embryo*

Cited by 29 publications

References 0 publications

Pyridine Nucleotide Content in the Higher Plant. Effect of Age of Tissue

Pyridine Nucleotide Content in the Higher Plant. Effect of Age of Tissue

Studies on the phytotoxic effects of some organotin(IV) compounds on the germination of the mung bean seed, Phaseolus aureus

Seed Germination

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