Water deficit and recovery response of Medicago truncatula plants expressing the ELIP-like DSP22

被引：18

作者：

Araujo, S. S. ^{[1
,2
]}

Duque, A. S. ^{[1
]}

Silva, J. M. ^{[3
,4
]}

Santos, D. ^{[2
]}

Silva, A. B. ^{[3
,4
]}

Fevereiro, P. ^{[1
,3
]}

机构：

[1] Univ Nova Lisboa, Inst Tecnol Quim & Biol, P-2781901 Oeiras, Portugal

[2] Fac Med Vet, Inst Invest Cient & Trop, P-1300477 Lisbon, Portugal

[3] Univ Lisbon, Fac Ciencias, Dept Biol Vegetal, P-1749016 Lisbon, Portugal

[4] Univ Lisbon, Fac Ciencias, BioFIG, P-1749016 Lisbon, Portugal

来源：

BIOLOGIA PLANTARUM | 2013年 / 57卷 / 01期

关键词：

abiotic stress; barrel medic; chlorophyll content; chlorophyll fluorescence; relative water content; transgenic plants; CHLOROPHYLL FLUORESCENCE; TRANSGENIC PLANTS; LIGHT; PROTEINS; DROUGHT; MODEL; GENE; DESICCATION; CAROTENOIDS; TOLERANCE;

D O I：

10.1007/s10535-012-0235-7

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

In this article, we present the response of Medicago truncatula Gaert. cv. Jemalong plants expressing constitutively the Dsp22 gene from Craterostigma plantagineum to water stress and rehydration. The Dsp22 gene encodes an ELIP-like protein thought to protect the chloroplast against photooxidative damage during the dehydration and rehydration. The Dsp22 transgenic homozygous M. truncatula plants showed higher amount of chlorophyll (Chl), lower Chl a/Chl b ratio and higher actual efficiency of energy conversion in photosystem 2 (I broken vertical bar(PSII)) after rehydration, when compared to the wild type. The combined data from the Chl a fluorescence analysis, pigment quantification and biomass accumulation showed that transgenic M. truncatula plants are able to recover from water deprivation better than wild type plants.

引用

页码：159 / 163

页数：5

共 31 条

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