Sugar regulates mRNA abundance of H(+)-ATPase gene family members in tomato

Plant Physiology
N MitoA B Bennett

Abstract

The plant plasma membrane H(+)-ATPase energizes the secondary uptake of nutrients and may facilitate cell expansion by acidifying the cell wall. In yeast, Glc stimulates the accumulation of H(+)-ATPase mRNA, and the growth rate supported by various sugars is correlated with H(+)-ATPase protein abundance. Expression of three H(+)-ATPase genes, LHA1, LHA2, and LHA4, was previously detected in tomato (Lycopersicon esculentum). We have characterized the sequence of the LHA4 gene and examined the expression of these three tomato H(+)-ATPase genes in growing tissues and in response to exogenous sugars. LHA4 is a member of the H(+)-ATPase subfamily, including the Arabidopsis thaliana genes AHA1, AHA2, and AHA3. The 5' untranslated region of the deduced LHA4 cDNA contains a short, open reading frame very similar to that in the Nicotiana plumbaginifolia gene PMA1. LHA4 transcript abundance in seedlings is correlated with cell growth, being 2.5 times greater in hypocotyls of dark- versus light-grown plants. The accumulation of both LHA4 and LHA2 mRNAs is induced by the addition of exogenous sugars and this induction appears to be dependent on sugar uptake and metabolism, because mannitol and 3-O-methylglucose do not stimulate mRNA accumu...Continue Reading

References

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Citations

Feb 29, 2000·Biochimica Et Biophysica Acta·F Portillo
Jan 17, 2003·Plant Physiology·Rossitza AtanassovaSerge Delrot
Apr 1, 2010·The Plant Cell·Jörg KudlaKenji Hashimoto
Apr 7, 2007·FEBS Letters·Roberto A GaxiolaKarin Schumacher
Jan 1, 1997·Surgery·R P Lanza, W L Chick
Oct 24, 2001·Plant & Cell Physiology·T FuruichiS Muto
Mar 27, 2021·Frontiers in Plant Science·Heidi Kaulfürst-SobollAntje von Schaewen
May 22, 1998·Plant Physiology·Y KanayamaA B Bennett
Apr 5, 2000·Biochimica Et Biophysica Acta·P Morsomme, M Boutry
Apr 5, 2000·Biochimica Et Biophysica Acta·S DelrotL Maurousset

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