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Author Sperandio M.V.L., Santos L.A., Bucher C.A., Fernandes M.S., de Souza S.R.
Title Isoforms of plasma membrane H+-ATPase in rice root and shoot are differentially induced by starvation and resupply of NO3- or NH4+
Abstract:
The goal of this study was to evaluate the effects of nitrogen starvation and resupply in 10 PM H+-ATPase isoforms and the expression of NO3- and NH4+ transporters in rice. The net uptake of both forms of NO3--N or NH4+-N was increased with its resupply. Resupply of NO3- resulted in induction of the following PM H+-ATPase isoforms, OsA1, OsA2, OsA5 and OsA7 in the shoots and OsA2, OsA5, OsA7 and OsA8 in the roots. Resupply of NH4+ resulted in the induction of the following OsA1, OsA3 and OsA7 isoforms in the roots while OsA1 was induced in the shoots. It was observed that increased PM H+-ATPase activity also resulted in increased net uptake of NO3- and NH4+. In the roots, OsNRT2.1 and OsNRT2.2 were induced by NO3- resupply, while OsAMT1.1 and OsAMT1.2 were induced by NH4+ deficiency. The results showed that the expression of PM H+-ATPase isoforms is related to NO3- and NH4+ transporters as well as in which section of the plant it takes place. PM H+-ATPase isoforms OsA2 and OsA7 displayed the strongest induction in response to N resupply, therefore indicating that these genes could be involved in N uptake in rice.
Journal Plant Science
Country Brazil
Volume 180
Pages 251-258
Year 2011
PubMed ID -
PubMed Central ID -
DOI -
URL -
Relation
Gene AHA1 AHA10 AHA2 AHA3 AHA4 AHA5 AHA6 AHA8 AHA9 AMT1;1 AMT1;2 AMT1;3 LMPA NRT2.1 NRT2.2
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain 		-
Stages in Each Organ
- Muant Lines (Gene) 		-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
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