Water Stress Response of Conventional and Transgenic Soybean Plants Monitored by Chlorophyll a Fluorescence

被引：14

作者：

Caires, A. R. L. ^{[1
]}

Scherer, M. D. ^{[1
]}

Santos, T. S. B. ^{[1
]}

Pontim, B. C. A. ^{[2
]}

Gavassoni, W. L. ^{[2
]}

Oliveira, S. L. ^{[1
]}

机构：

[1] Fundacao Univ Fed Grande Dourados, Grp Opt Aplicada, BR-79804970 Dourados, MS, Brazil

[2] Fundacao Univ Fed Grande Dourados, Lab Fitopatol, BR-79804970 Dourados, MS, Brazil

来源：

JOURNAL OF FLUORESCENCE | 2010年 / 20卷 / 03期

关键词：

Fluorescence Spectroscopy; Glycine max; Water stress; PHOTOSYNTHETIC GAS-EXCHANGE; VULGARIS L LEAVES; GREEN; BLUE;

D O I：

10.1007/s10895-009-0594-4

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Two soybean cultivars, one conventional and a glyphosate-tolerant (transgenic), were submitted to the water stress and the chlorophyll a fluorescence induced by UV light was monitored daily during 16 days. In this work, 40 pots in total, 20 per cultivar were used in the investigation. Each cultivar was divided in two groups, the control group and the group submitted to the water stress. The stress response of the cultivars was monitored by red to far-red fluorescence ratio. The data indicate that the water stress induced the earliest changes on the fluorescence ratio and chlorophyll content for the conventional cultivar. In addition, a comparative analysis of the fluorescence ratios of the cultivars reveals that conventional plants have higher chlorophyll content than transgenic ones. This result might be useful in the development of methodologies able to distinguish conventional to transgenic apart.

引用

页码：645 / 649

页数：5

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