Stress Metabolism II. Changes in Proline Concentration in Excised Plant Tissues

Singh, TN; Aspinall, D.; Paleg, L. G.; Boggess, SF

doi:10.1071/bi9730057

Cited by 90 publications

(15 citation statements)

References 6 publications

(14 reference statements)

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“…3). No influence of water deficit on free proline accumulation in roots was found in the earlier studies on barley (Singh et al 1973). Versules and Sharp (1999) showed that free proline accumu-8 lation in roots under water deficit oc-6 curred only in the root tip.…”

Section: • 40mentioning

confidence: 80%

ABA and proline accumulation in leaves and roots of wild (Hordeum spontaneum) and cultivated (Hordeum vulgare ‘Maresi’) barley genotypes under water deficit conditions

Bandurska¹,

Stroiński²

2003

Acta Physiol Plant

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The purpose of the study was to examine water stress-induced changes in the ABA and proline contents in roots and leaves of a potentially more resistant wild accession ofHordeum spontaneum and the modem cultivar Maresi (Hordeum vulgare). Leaves of H. spontaneum had higher contents of constitutive ABA and proline in comparison to those of 'Maresi'. A moderate water deficit resulted only in root dehydration, which was higher in 'Maresi'. Increases of water deficit in roots coincided with an increase of ABA content in roots, followed by that in leaves. The level of proline increased only in leaves and only in the case of H. spontaneum. Under conditions of severe water stress, the root dehydration levels were similar in the both genotypes, whereas leaf dehydration was higher in 'Maresi'. H. spontaneum, as compared to 'Maresi' showed an earlier increase of ABA content in the roots and accumulated more ABA in the leavesl Free proline levels in the roots increased in both genotypes but H. spontaneurn exhibited a 2-fold higher proline accumulation than 'Maresi'. In 1t. spontaneum the accumulation of proline in the leaves occurred noticeably earlier and to a higher extent than in 'Maresi'. A possible connection of these modifications with water stress resistance of the investigated genotypes is discussed in this paper.

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Section: • 40mentioning

confidence: 80%

ABA and proline accumulation in leaves and roots of wild (Hordeum spontaneum) and cultivated (Hordeum vulgare ‘Maresi’) barley genotypes under water deficit conditions

Bandurska¹,

Stroiński²

2003

Acta Physiol Plant

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“…Intracellular accumulation of proline is found in a variety of organisms, including algae, bacteria, and higher plants as a response to 1) osmotically stressful conditions such as high salinity, changed osmolarity of growth medium, and drought (Singh et al 1973, Csonka 1988; 2) temperature shock (Guy 1990); or 3) air pollution (Jäger andGrill 1975, Anbazhagan et al 1988). The function of proline accumulation seems to be manifold.…”

mentioning

confidence: 99%

ROLE OF PROLINE ACCUMULATION IN RESPONSE TO TOXIC COPPER IN CHLORELLA SP. (CHLOROPHYCEAE) CELLS

Wu¹,

Hsieh²,

Kow³

1998

Journal of Phycology

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The green alga Chlorella sp. (strain 2350) was found to accumulate proline, up to a maximum of 0.027 fmol·cell Ϫ1 , under stressful concentrations of cupric ions. The function of the accumulated proline was studied with respect to its effect on copper (Cu) uptake. By induction with salt stress, cells with various levels of intracellular proline were used for this study. It is shown that the amount of Cu taken up by the cells was reduced when the intracellular proline levels were enhanced. When proline was exogenously supplied prior to Cu treatment, the adsorption of Cu was markedly reduced. When exogenous proline was supplied after Cu treatment, it resulted in a remarkable desorption of the adsorbed Cu immediately after the addition of proline. The results of the present study indicate that proline may exert some action on the cell surface and suggest that one function of accumulated proline is to reduce the uptake of metal ions. The accumulation of proline may be related to a tolerance mechanism for dealing with Cu stress.

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“…The accumulation of proline in barley leaves subjected to water stress has recently been recognized by and in leaf discs floated on distilled water by Singh, Aspinall, Paleg & Boggess (1973). The high concentrations of proline and the high accumulation of 14C in the amino acid, observed in citrus leaves, may be due to similar causes.…”

Section: Labelled Branch Of a Treementioning

confidence: 87%

The Distribution of Carbon‐14 in Plants Labelled as a Source of Food for Red Scale

Robertson

Slowiak

1974

Entomologia Exp Applicata

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Citrus leaves, banana squash and lemon fruit, labelled by photosynthesis, have been used as a source of 14C for red scale, Aonidiella aurantii (Mask.). The distribution of the isotope amongst the constituents of these plants has been studied using chemical methods of separation and chromatography. In citrus leaves, whether they were labelled as discs in the laboratory or in situ in the field, activity occurred as sucrose initially, but within 5 days a comparable amount was present in the amino acid, proline, and also in the insoluble carbohydrates, the proportions remaining fairly stable for long periods. Although the total activity of the leaf discs did not decrease with time, the activity of successive groups of newly hatched red scale larvae which fed on these discs for 10 days, fell significantly. It is suggested that due to the interaction of the insects' saliva with plant tissue, areas where red scale fed became depleted in activity. Sap obtained from the labelled discs contained activity in the form of sucrose and proline, but the body fluid from the mature female red scale contained activity in sucrose only. In banana squash and in lemons most of the activity occurred in the form of sugars, principally sucrose, with glucose taking up a greater proportion in the lemons; there was no appreciable activity in amino acids and a much smaller fraction in the insoluble carbohydrates. Résumé LA DISTRIBUTION DU CARBON‐14 DANS DES PLANTES MARQUEES, SOURCE DE NOURRITURE DE LA COCHENILLE ROUGE. On a utilisé des feuilles de citronnier, des courges (*) et des fruits de citronnier, marqués par photosynthèse, camme source de 14C pour la cochenille rouge, Aonidiella aurantii. La distribution de l'isotope parmi les constituants des tissus végétaux, c'est‐à‐dire, les Sucres, les acides aminés et les hydrates de carbone insolubles, a éTÉ étudiée en utilisant des méthodes chimiques de séparation et de chromatographie. Les feuilles de citronnier furent marquées soit sous forme de disques au laboratoire, soit à l'état de feuilles intactes sur une branche d'arbre vivant. Dans les deux cas la radioactiviTÉ était présente d'abord sous forme de sucrose, mais après 5 jours une quantiTÉ comparable était présente dans un acide aminé, la proline, et dans les hydrates de carbone insolubles, et cela dans des proportions restant assez stables pendant de longues périodes. Le sue extrait des disques marqués, sur lesquels se sont nourries les cochenilles rouges, montre une radioactiviTÉ du sucrose et de la proline, mais le liquide de l'hémocoele de la femelle mûre de la Cochenille rouge ne se révèle radioactif que sous forme de sucrose. Bien que la radioactiviTÉ totale des disques de feuilles de citronnier ne diminue que très lentement à la longue, l'activiTÉ moyenne obtenue par des groupes successifs de larves de cochenilles rouges récemment écloses, se nourrissant sur ces disques pendant 10 jours, diminue beaueoup plus rapidement. La différence ne peut être expliquée ni par le transport de l'isotope des fractions solubles aux fractions inso...

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Stress Metabolism II. Changes in Proline Concentration in Excised Plant Tissues

Cited by 90 publications

References 6 publications

ABA and proline accumulation in leaves and roots of wild (Hordeum spontaneum) and cultivated (Hordeum vulgare ‘Maresi’) barley genotypes under water deficit conditions

ABA and proline accumulation in leaves and roots of wild (Hordeum spontaneum) and cultivated (Hordeum vulgare ‘Maresi’) barley genotypes under water deficit conditions

ROLE OF PROLINE ACCUMULATION IN RESPONSE TO TOXIC COPPER IN CHLORELLA SP. (CHLOROPHYCEAE) CELLS

The Distribution of Carbon‐14 in Plants Labelled as a Source of Food for Red Scale

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