Effect of aluminium on metabolism of starch and sugars in growing rice seedlings

• Autorzy: Mishra P. , Dubey R. S.
• Języki publikacji: EN

Abstrakty

EN

The effect of increasing concentrations of Al2(SO4)3 in situ on the content of starch, sugars and activity behaviour of enzymes related to their metabolism were studied in growing seedlings of two rice cvs. Malviya- 36 and Pant-12 in sand cultures. Al2(SO4)3 levels of 80 and 160 μM in the growth medium caused an increase in the contents of starch, total sugars as well as reducing sugars in roots as well as shoots of the rice seedlings during a 5–20 days growth period. The activities of the enzymes of starch hydrolysis α-amylase, β-amylase and starch phosphorylase declined in Al-exposed seedlings, whereas the activities of sucrose hydrolyzing enzymes sucrose synthase and acid invertase increased in the seedlings due to Al3+ treatment. The enzyme of sucrose synthesis, sucrose phosphate synthase showed decreased activity in Al3+ treated seedlings compared to controls. Results suggest that Al3+ toxicity in rice seedlings impairs the metabolism of starch and sugars and favours the accumulation of hexoses by enhancing the activities of sucrose hydrolyzing enzymes.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2008
• Tom: 30
• Numer: 3
• Opis fizyczny: p.265-275,fig.,ref.

Twórcy

autor

Mishra P.

• Department of Biochemistry, Faculty of Science, Banaras Hindu University, 221005 Varanasi, India

autor

Dubey R. S.

• Department of Biochemistry, Faculty of Science, Banaras Hindu University, 221005 Varanasi, India

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