NDLI: Responses of two rice cultivars differing in seedling-stage nitrogen use efficiency to growth under low-nitrogen conditions

Content Provider	Springer Nature Link
Author	Shi, Wei Ming Xu, Wei Feng Li, Su Mei Zhao, Xue Qiang Dong, Gang Qiang
Copyright Year	2009
Abstract	Demand for low-input nitrogen sustainable rice is increasing to meet the need for environmentally friendly agriculture and thus development of rice with high nitrogen use efficiency (NUE) is a major objective. Hence, understanding how rice responds to growth under low-nitrogen conditions is essential to devise new ways of manipulating genes to improve rice NUE. In this study, using two rice varieties with different seedling-stage NUE obtained from previous field experiments, we investigated the physiological and molecular responses of young rice to low-nitrogen conditions. Our results suggest that glutamine synthetase (GS) and NADH-dependent glutamate synthase (NADH-GOGAT) play important roles in N assimilation of seedling rice roots under low-nitrogen conditions; the regulatory mechanisms of GS and NADH-GOGAT in seedling rice roots do not occur at the transcription level, and may be posttranscriptional; OsAMT1;1 play important roles in rice N acquisition by partially regulating N uptake under low-nitrogen conditions; and OsAMT1;1 and OsNRT2;1 also play important roles in rice N acquisition by partially regulating root growth and development under low-nitrogen conditions. The challenge for future studies is to characterize the functional roles of GS, NADH-GOGAT, OsAMT1;1, and OsNRT2;1 in young rice NUE using RNAi and mutant techniques.
Starting Page	291
Ending Page	302
Page Count	12
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	326
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-05-07
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Glutamine synthetase NADH-dependent glutamate synthase Nitrogen use efficiency OsAMT1;1 OsNRT2;1 Seedling-stage rice Ecology Plant Physiology Soil Science & Conservation Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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Mapping of QTLs associated with cytosolic glutamine synthetase and NADH‐glutamate synthase in rice (Oryza sativa L.)

Comparison of contents for cytosolic-glutamine synthetase and NADH-dependent glutamate synthase proteins in leaves of japonica, indica, and javanica rice plants

Nitrate supply affects root growth differentially in two rice cultivars differing in nitrogen use efficiency

Assimilation of ammonium ions and reutilization of nitrogen in rice (Oryza sativa L.)*

Response of glutamine synthetase and glutamate synthase isoforms to nitrogen sources in rice cultivars (1990).

Effect of exogenous ammonium on glutamine synthetase, glutamate synthase, and glutamate dehydrogenase in the root of rice seedling

Effect of different nitrogen sources and plant growth regulators on glutamine synthetase and glutamate synthase activities of radish cotyledons (2002).

Growth, nitrogen fixation and ammonium assimilation in common bean (Phaseolus vulgaris L) subjected to iron deficiency

Inadequate root uptake may represent a major component limiting rice to use urea as sole nitrogen source for growth

Responses of two rice cultivars differing in seedling-stage nitrogen use efficiency to growth under low-nitrogen conditions

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Mapping of QTLs associated with cytosolic glutamine synthetase and NADH‐glutamate synthase in rice (Oryza sativa L.)

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Nitrate supply affects root growth differentially in two rice cultivars differing in nitrogen use efficiency

Assimilation of ammonium ions and reutilization of nitrogen in rice (Oryza sativa L.)*

Response of glutamine synthetase and glutamate synthase isoforms to nitrogen sources in rice cultivars (1990).

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