Effects of irradiance-sulphur interactions on enzymes of carbon, nitrogen, and sulphur metabolism in maize plants

被引：12

作者：

Astolfi, S ^{[1
]}

De Biasi, MG ^{[1
]}

Passera, C ^{[1
]}

机构：

[1] Univ Tuscia, Dipartimento Agrobiol & Agrochim, I-01100 Viterbo, Italy

来源：

PHOTOSYNTHETICA | 2001年 / 39卷 / 02期

关键词：

o-acetylserine sulphydrylase; ATP sulphurylase; chlorophyll; dry mass; glutamine synthetase; NAD-dependent glutamate dehydrogenase; nitrate reductase; phosphoenolpyruvate carboxylase; proteins; ribulose-1,5-bisphosphate carboxylase;

D O I：

10.1023/A:1013762605766

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effect of sulphur deprivation and irradiance (180 and 750 mu mol m(-2) s(-1)) on plant growth and enzyme activities of carbon, nitrogen, and sulphur metabolism were studied in maize (Zea mays L. Pioneer cv. Latina) plants over a 15-d-period of growth. Increase in irradiance resulted in an enhancement of several enzyme activities and generally accelerated the development of S deficiency. ATP sulphurylase (ATPs; EC 2.7.7.4) and o-acetylserine sulphydrylase (OASs; EC 4.2.99.8) showed a particular and different pattern as both enzymes exhibited maximum activity after 10 d from the beginning of deprivation period. Hence in maize leaves the enzymes of C, N, and S metabolism were differently regulated during the leaf development by irradiance and sulphur starvation.

引用

页码：177 / 181

页数：5

共 22 条

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