Influence of maturity and bagging on the relationship between anthocyanin accumulation and phenylalanine ammonia-lyase (PAL) activity in ‘Jonathan’ apples

Wang, Hongqing; Arakawa, Osamu; Motomura, Yoshie

doi:10.1016/s0925-5214(00)00089-2

Cited by 50 publications

(30 citation statements)

References 15 publications

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“…It has been reported that PAL activity positively correlated with anthocyanin synthesis in fruit of grapes, strawberries and apple (Horbowicz et al 2008). Other authors have demonstrated that when apples ripen, anthocyanin accumulation decreases, even though PAL activity is relatively high (Wang et al 2000). Our results show that UV-B radiation enhanced the production of anthocyanins and flavonols.…”

Section: Discussionsupporting

confidence: 71%

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

2011

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Responses of barley seedlings to water deficit (WD) induced by polyethylene glycol (PEG 6000) and ultraviolet (UV-B; 280-320 nm) radiation and their interaction (UV-B ? WD) were examined. A decrease in dry matter yield and water content of leaves and roots was observed following application of WD and UV-B ? WD, while no changes were found after treating barley plants with UV-B. Proline content was increased in leaves under WD conditions and UV-B ? WD. In contrast, UV-B treatment had no effect on the accumulation of proline in leaves of barley plants. Changes in root proline content showed a varied response: WD induced an increase in the level of this amino acid, while UV-B as well as UV-B ? WD suppressed root proline content. The lipid peroxidation product malondialdehyde (MDA) was increased in leaves under WD and UV-B ? WD stresses. Root MDA content increased in WD-stressed plants, but it decreased in the case of combined application of both stresses. The applied stress factors operated in a variable manner on phenylpropanoid metabolism. Phenylalanine ammonialyase (PAL) activity in leaves and roots was stimulated after exposure to WD and application of UV-B ? WD stresses, while UV-B stress did not affect its activity. On the other hand, UV-B treatment enhanced the activity of 4:coumarate-CoA ligase (4CL) in leaves and this enhancement was positively correlated with the accumulation of anthocyanins and flavonols. However, the combined application of WD and UV-B reduced the positive effect of UV-B on the accumulation of these compounds and the activity of 4CL. Surprisingly, anthocyanins and flavonols were not detected in roots of examined barley seedlings despite increased 4CL activity. The results suggest that UV-B-induced activation of 4CL as well as accumulation of anthocyanin and flavonols in leaves is beneficial for the response to this stress factor. On the other hand, WD-induced reduction of the effect of UV-B on 4CL activity and the contents of anthocyanin and flavonol might be a cause of membrane damage in UV-B-and WDstressed plants. In addition, conversely to what could be expected, the UV-B effect was perceived by the waterstressed roots, which exhibited reduced lipid peroxidation (MDA) and proline accumulation in WD-stressed plants exposed to UV-B.

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Section: Discussionsupporting

confidence: 71%

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

2011

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“…PAL activity is involved in changes in anthocyanin accumulation 33. Our data showed significant positive correlations among PAL, POD and anthocyanins in nectarine peel, but the trend of changes was not consistent during fruit maturation.…”

Section: Discussioncontrasting

confidence: 64%

Discrete and Infinite Cage‐Like Frameworks with Inclusion of Anionic and Neutral Species and with Interpenetration Phenomena

Fan

Zhu

Okamura

et al. 2003

Chemistry A European J

107

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Complex [Ag(tpba)N(3)] (1) was obtained by reaction of novel tripodal ligand N,N',N"-tris(pyrid-3-ylmethyl)-1,3,5-benzenetricarboxamide (TPBA) with [Ag(NH(3))(2)]N(3). While the reactions between 1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene (TITMB) and silver(I) salts with different anions and solvent systems give six complexes: [Ag(3)(titmb)(2)](N(3))(3).CH(3)OH.4 H(2)O (2), [Ag(3)(titmb)(2)](CF(3)SO(3))(2)(OH).5 H(2)O (3), [Ag(3)(titmb)(2)][Ag(NO(3))(3)]NO(3).H(2)O (4), [Ag(3)(titmb)(2)(py)](NO(3))(3).H(2)O (py=pyridine) (5), [Ag(3)(titmb)(2)(py)](ClO(4))(3) (6), and [Ag(3)(titmb)(2)](ClO(4))(3).CHCl(3) (7). The structures of these complexes were determined by X-ray crystallography. The results of structural analysis of complexes 1 and 2, with the same azide anion but different ligands, revealed that 1 is a twofold interpenetrated 3D framework with interlocked cage-like moieties, while 2 is a M(3)L(2) type cage-like complex with a methanol molecule inside the cage. Entirely different structure and topology between 1 and 2 indicates that the nature of organic ligands affected the structures of assemblies greatly. While in the cases of complexes 2-7 with flexible tripodal ligand TITMB, they are all discrete M(3)L(2) type cages. The results indicate that the framework of these complexes is predominated by the nature of the organic ligand and geometric need of the metal ions, but not influenced greatly by the anions and solvents. It is interesting that there is a divalent anion [Ag(NO(3))(3)](2-) inside the cage 4 and an anion of ClO(4)(-) or NO(3)(-) spontaneously encapsulated within the cage of complexes 5, 6 and 7.

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“…The minimum Organoleptic quality of 5.46 and 5.40 (Neither like nor dislike) was obtained in control during both years respectively. Similarly, earlier workers have also reported that the fruit bagging can improves fruit quality mainly by keeping fruit appearance and preferable uniform coloration of the fruit as reported in apples (Wang et al, 2000), and grape (Signes et al, 2007).…”

Section: Resultsmentioning

confidence: 70%

Effect of Pre Harvest Spraying of Nutrients and Bagging with Different Colours of Polythene on Physico-Chemical Quality of Rainy Season Guava (Psidium guajava L.) Fruits cv. L-49

Mishra¹,

Pathak²,

Chaudhary³

2017

Int.J.Curr.Microbiol.App.Sci

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Influence of maturity and bagging on the relationship between anthocyanin accumulation and phenylalanine ammonia-lyase (PAL) activity in ‘Jonathan’ apples

Cited by 50 publications

References 15 publications

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

Response of barley seedlings to water deficit and enhanced UV-B irradiation acting alone and in combination

Discrete and Infinite Cage‐Like Frameworks with Inclusion of Anionic and Neutral Species and with Interpenetration Phenomena

Effect of Pre Harvest Spraying of Nutrients and Bagging with Different Colours of Polythene on Physico-Chemical Quality of Rainy Season Guava (Psidium guajava L.) Fruits cv. L-49

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