Effect of abscisic acid on betacyanin leakage from plant tissues

Pustovoitova, T. N.

doi:10.1007/bf02886610

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…Compared to controls, the germination frequency of desiccation-tolerant embryos was improved after desiccation treatment (Table 2). It has been shown that ABA affects the stabilization of the cell membrane system (Pustovoitova, 1987). This investigation suggests that ABA and/or PEG 6000 also probably promoted the production of peroxidase in desiccation-tolerant somatic embryos, which catalyzed the reduction of H 2 O 2 , and protected the embryos from oxidative damage.…”

Section: Resultsmentioning

confidence: 94%

Peroxidase activity of desiccation-tolerant loblolly pine somatic embryos

Tang

2000

In Vitro Cell.Dev.Biol.-Plant

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Desiccation tolerance can be induced by culturing somatic embryos of loblolly pine (Pinus taeda L.) on medium supplemented with 50 mM abscisic acid (ABA) and/or 8.5% polyethylene glycol (PEG 6000 ). Scanning electron microscopy of desiccated somatic embryos showed that the size and external morphology of the desiccation-tolerant somatic embryos recovered to the pre-desiccation state within 24±36 h, whereas the non-desiccation-tolerant somatic embryos did not recover and remained shriveled, after rehydration. Peroxidase activity of desiccated somatic embryos increased sharply after 1 d of desiccation treatment at 87% relative humidity (RH), and desiccation-tolerant somatic embryos had higher peroxidase activity compared to sensitive somatic embryos. Higher peroxidase activity of desiccation-tolerant somatic embryos may have allowed them to catalyze the reduction of H 2 O 2 produced by drought stress, and protected them from oxidative damage.

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Section: Resultsmentioning

confidence: 94%

Peroxidase activity of desiccation-tolerant loblolly pine somatic embryos

Tang

2000

In Vitro Cell.Dev.Biol.-Plant

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“…Loss of membrane permeability during water stress was related to ABA accumulation in cut camation flowers (Eze et al 1986). Tissue frost-hardened by ABA displayed decreased electrolyte leakage (Zhang and Willison 1989), whereas ABA induced net loss of potassium and betacyanin efflux from leaf cells of Beta vulgaris (Pustovoitova 1987).…”

Section: Introductionmentioning

confidence: 99%

Drought tolerance, abscisic acid and electrolyte leakage in fast- and slow-growing black spruce (Picea mariana) progenies

Tan¹,

Blake²

1993

Physiol Plant

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Tan, W. and Blake, T. J. 1993. Drought tolerance, abscisic acid and electrolyte leakage in fast-and slow-growing black spruce (Picea mariana) progenies. -Physiol. Plant. 89: 817-823.To investigate the role that drought tolerance plays in growth, abscisic acid (ABA) accumulation and electrolyte leakage during water stress were compared in fast-and slow-growing black spruce (Picea mariana [Mill.] B. S. P.) progenies. Changes in the ABA content of the needles were quantified using an indirect enzyme-linked immunosorbent assay validated by gas chromatography electron capture detection. Needle electrolyte leakage was estimated using a conductivity bridge. Seedlings were stressed using (I) osmotic stress, induced by a stepwise increase in concentrations of polyethylene glycol 3 350 (PEG) for ABA study and (2) air drying for electrolyte leakage study. Progenies did not differ in ABA levels under unstressed conditions, but progeny differences were observed under osmotic stress. Needle ABA content increased up to 500% under osmotic stress. Slow-growing black spruce progenies (25 and 46) accumulated more ABA under moderate (18% PEG), but not severe (25% PEG), osmotic stress. The slow-growing progenies also leaked more electrolytes under moderate to severe water stress and lost 50% electrolytes at a higher xylem tension, suggesting they suffered more injury and were less dehydration tolerant. Our previously-published results showed that slow-growing progenies lost their photosynthesis and stomatal conductance more quickly during osmotic stress and recovered more slowly after rehydration. Therefore, tolerance of dehydration leading to a maintenance of physiological integrity during drought stress could explain the fast growth rates of more vigorous black spruce progenies.

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“…This effect does not seem to be a permeabilization of the membrane while ABA thd not change K § efflux (data not shown), as has been shown for other solutes (Harkers ctal. 1986 ;Pustovoitova 1987).…”

Section: Discussionmentioning

confidence: 99%

Influence of Abscisic acid on K<sup>+</sup> absorption by leaf discs ofSolanum tuberosum

Suleiman¹,

Hourmant²,

Penot³

1991

Biologia plant.

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It is shown that, contrary to what is generally found, treatment with abscisic acid (ABA) of potato leaf tissues resulted in an increase of K § uptake. Comparison with other hormones was made: BAP induced an inhibition and GA~ a stimulation of K + uptake. The uptake was sensitive to several metabolic inhibitors, external pH and ATPase inhibitors while p-chloromercuribenzenesulfonic acid (PCMBS) had no effect. Uptake kinetics revealed the presence of both saturable and linear components which were both stimulated by ABA treatment. Our data are consistent with an effect of ABA on the active and passive components of K + uptake. These results are discussed in relation to the action of ABA on foliar senescence and the action on ion partitioning in the whole plant.

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Effect of abscisic acid on betacyanin leakage from plant tissues

Cited by 9 publications

References 9 publications

Peroxidase activity of desiccation-tolerant loblolly pine somatic embryos

Peroxidase activity of desiccation-tolerant loblolly pine somatic embryos

Drought tolerance, abscisic acid and electrolyte leakage in fast- and slow-growing black spruce (Picea mariana) progenies

Influence of Abscisic acid on K<sup>+</sup> absorption by leaf discs ofSolanum tuberosum

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