Aluminium induced acid phosphatase activity in roots of Al-sensitive and Al-tolerant barley varieties

Huttová, Jana; Tamás, Ladislav; Mistrı́k, Igor

doi:10.17221/4412-pse

Cited by 7 publications

(6 citation statements)

References 21 publications

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“…Therefore, our study upholds the view that one of the initial responses of plants to P deficiency stress is an increase in root acid phosphatase activity (Goldstein et al 1988, Duff et al 1994 because its function is the hydrolysis of inorganic phosphorous (Pi) from orthophosphate monoesters used for plant nutrition in the soil (Huttová et al 2002). Further, the findings of the present study is in accordance with Sukhada (1992) who reported higher acid phosphatase activity in comparison to alkaline phosphatase activity in roots of 4-month-old papayas inoculated with Glomus mosseae (Nicol.…”

Section: Discussionsupporting

confidence: 84%

Arbuscular mycorrhizal status and root phosphatase activities in vegetative Carica papaya L. varieties

2009

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The arbuscular mycorrhizal (AM) status and root phosphatase activities were studied in four vegetative Carica papaya L. varieties viz., CO-1, CO-2, Honey Dew and Washington. Standard techniques were used to ascertain information on spore density and species diversity of AM fungi. Although in case of estimation of root colonization and root phosphatase activities, the existing methods were slightly modified. Root colonization and spore density of AM fungi along with root phosphatase (acid and alkaline) activities varied significantly in four papaya varieties. The present study recorded higher acid root phosphatase activity when compared with alkaline root phosphatase activity under P-deficient, acidic soil conditions. The present study revealed that the root colonization of AM fungi influenced acid root phosphatase activity positively and significantly under P-deficient, acidic soil conditions. A total of 11 species of AM fungi belonging to five genera viz., Acaulospora, Dentiscutata, Gigaspora, Glomus and Racocetra were recovered from the rhizosphere of four papaya varieties.

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Section: Discussionsupporting

confidence: 84%

Arbuscular mycorrhizal status and root phosphatase activities in vegetative Carica papaya L. varieties

2009

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“…Supernatant was taken for enzyme assay. A standard curve was prepared with the known enzyme samples, and absorbances were taken at 322 nm following Huttova' et al (2002). The data presented were the average of 20 readings for each plant of each location, and standard errors were also depicted in the Figures.…”

Section: 2)mentioning

confidence: 99%

Protein and enzymes regulations towards salt tolerance of some Indian mangroves in relation to adaptation

Dasgupta

Nandy

Sengupta

et al. 2011

Trees

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Elevated substrate salinity and anthropogenic impulse are the major threat to the mangrove ecosystem. In the Indian subcontinent, Sundarbans have the richest mangrove species diversity. Due to geomorphic characteristics and unplanned management, the elevated salinity prevails in the western part and that has direct impact on vegetation. Seven mangrove taxa were examined, of which four (Aegialitis rotundifolia, Heritiera fomes, Xylocarpus granatum, and X. mekongensis) were considered as degrading and three (Bruguiera gymnorrhiza, Excoecaria agallocha, and Phoenix paludosa) were considered as natural control. The targeted taxa were collected from five different islands and were selected on the basis of increasing salinity gradient. As salinity increased from site I to V (11.76-15.2 ppt), the amount of total leaf proteins decreased in all the targeted species and ranged between 5.67 and 25.23%. The percentage of protein depletion was less in Aegialitis, Heritiera, and Xylocarpus than the other three taxa in higher salinity that pointed out their less adaptability, as degradation of protein may be essential for efficient stress management. Two antioxidative (peroxidase and superoxide dismutase) and two hydrolyzing (acid phosphatase and esterase) enzymes showed a positive correlation with salinity. In four degrading taxa, the percentage of enzyme increment was less than those of their natural control taxa. Salinity imposed increment of antioxidant enzymes facilitate ROS scavenging, which is an inevitable elevated byproduct during photo-inhibition. Lower amount and number of isoforms in higher salinity indicated towards less suitability of Aegialitis rotundifolia, Heritiera fomes, Xylocarpus granatum, and X. mekongensis in increased salinity level of western Sundarbans.

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“…Glucosidase, phosphatase and protease activity was found mainly in the protein bodies and spherosomes of ungerminated seeds (Adams and Novellie 1975), however phosphatase and esterase activity was reported also from the testa of ungerminated wheat grains (Price and Ey 1970). In our previous work we reported the significant increase in acid phosphatase in barley roots during Al treatment (Huttová et al 2002). In contrast Al at 8mM concentration markedly inhibited the release of acid phosphatase from imbibiting barley grains.…”

Section: Toxic Effects Of Aluminium On Plants As Well As Mechanisms Omentioning

confidence: 86%

Activity of some enzymes in barley caryopses during imbibition in aluminium presence

Šimonovičová¹,

Tamás²,

Huttová³

et al. 2004

PLANT SOIL ENVIRON

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Peroxidase, superoxide dismutase, acid and alkaline phosphatase, esterase and glucosidase activities were studied during imbibition of barley caryopses in the presence of aluminium. Antioxidative enzymes (peroxidase, superoxid dismutase) showed elevated activity already 2 h a�er the onset of imbibition in the presence of Al. In contrast hydrolytic enzymes (phosphatases, glucosidase, esterase) were only moderately activated at low Al concentrations (1-2mM), while strong inhibition was observed at higher Al concentrations (4-8mM). In in vitro conditions 8mM Al had no effect on the activity of acid phosphatase, moderately inhibited alkaline phosphatase and glucosidase and strongly esterase activity. During imbibition of caryopses in solution without Al an increase of the pH value of the imbibition solution from 4 to 6 has occurred, while in the presence of Al the shi� in pH value was less expressive and dependent on Al concentration. At 8mM Al concentration no change in the pH value of imbibition solution was observed. The SDS-PAGE analysis of polypeptides released to the imbibition solution in the presence of Al revealed the accumulation of two polypeptides with relative molecular mass of 35 and 18 kDa. The release of 96 and 27.5 kDa polypeptides was completely inhibited at 8mM Al concentration. These results confirmed that Al is able to influence different physiological processes already during seed imbibition and early growth phases of barley seedlings.

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Aluminium induced acid phosphatase activity in roots of Al-sensitive and Al-tolerant barley varieties

Cited by 7 publications

References 21 publications

Arbuscular mycorrhizal status and root phosphatase activities in vegetative Carica papaya L. varieties

Arbuscular mycorrhizal status and root phosphatase activities in vegetative Carica papaya L. varieties

Protein and enzymes regulations towards salt tolerance of some Indian mangroves in relation to adaptation

Activity of some enzymes in barley caryopses during imbibition in aluminium presence

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