Transgenic plants with improved dehydration-stress tolerance: Progress and future prospects

Cherian, Sam; Reddy, M. Venkat Ram; Ferreira, Ricardo B.

doi:10.1007/s10535-006-0141-y

Cited by 49 publications

(28 citation statements)

References 134 publications

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“…Both external application of GB and plant transformation with the aim of manipulation in GB biosynthesis pathway have been shown to increase the tolerance of the plants to adverse environment (for review see, Cherian et al 2006). Some data suggest that GB also protects the photosynthetic apparatus from damage under stress condition (Xing et al 1999, Zhao et al 2001, Allakhverdiev et al 2003.…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

“…It is likely that GB could protect membrane against oxidative stress by stimulation of anti-oxidative enzymes (Ma et al 2004(Ma et al , 2006, or GB could eliminate ROS directly (Smirnoff et al 1989, Shen et al 1997. Additionally, there is some evidence for the involvement of GB in the protection of the transcription and translation machinery under stress conditions (Rajendrakumar et al 1997, Allard et al 1998, for review see Cherian et al 2006).…”

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

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Effect of glycinebetaine on function of thylakoid membranes in wheat flag leaves under drought stress

Zhao¹,

Ma²,

Liang³

et al. 2007

Biologia plant.

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Two wheat cultivars, HF9703(drought tolerant)and SN215953 (drought sensitive) were used to examine the effects of glycinebetaine (GB, 100 mM) on lipid composition and function of thylakoid membranes under drought stress. GB application mitigated negative effect of drought on Ca 2+ -ATPase and Hill reaction activities, chlorophyll content, gas exchange and photosynthesis. These positive effects of GB application maybe, in part, correlated with improving the lipid composition of the thylakoid membranes.

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Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Section: ⎯⎯⎯⎯mentioning

confidence: 99%

Effect of glycinebetaine on function of thylakoid membranes in wheat flag leaves under drought stress

Zhao¹,

Ma²,

Liang³

et al. 2007

Biologia plant.

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“…To date, various approaches have been used to produce drought tolerant plants. One of the approaches is the engineering of transgenic cultivars expressing osmolyte biosynthesis genes involved in the biosynthesis of glycinebetaine, proline, polyamine, mannitol or trehalose (for a review, see Cherian et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Effects of drought on water content and photosynthetic parameters in potato plants expressing the trehalose-6-phosphate synthase gene of Saccharomyces cerevisiae

Stiller

Dulai

Kondrák

et al. 2007

Planta

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Two transgenic potato lines, T1 and T2, expressing the trehalose-6-phosphate synthase (TPS1) gene of yeast were isolated. In our experimental approach, we applied two novelties, namely the fusion of the drought-inducible promoter StDS2 to TPS1 and a marker-free transformation method. In contrast to the expected drought-induced expression, only a very low constitutive TPS1 expression was detected in the transgenic lines, probably due to chromosomal position effects. The observed expression pattern, however, was sufficient to alter the drought response of plants. Detached leaves of T1 and T2 showed an 8 h delay in wilting compared to the non-transformed control. Potted plants of T1 and T2 kept water 6 days longer than control plants and maintained high stomatal conductance and a satisfactory rate of net photosynthesis. During drought treatment, CO2 assimilation rate measured at saturating CO2 level was maintained at maximum level for 6-9 days in transgenic plants while it decreased rapidly after 3 days in the wild type plants. Under optimal growth conditions, lower CO2 fixation was detected in the transgenic than in the control plants. Stomatal densities of T1 and T2 leaves were reduced by 30-40%. This may have contributed to the lower CO2 fixation rate and altered drought response.

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“…Accumulation of proline and betaine under salt stress and their relative role in osmotic adjustment have mostly been studied in terrestrial plants (McCue and Hanson 1992, Ishitani et al 1993, Colmer et al 1996, Wood et al 1996, Khan et al 1998, Aziz et al 1999, Hien et al 2003, Demir and Ozturk 2004, Niknam et al 2004, Cherian et al 2006, although salinity tolerance is more prevalent in aquatic plants. Besides, mostly pure NaCl has been used as a salinity stress in the experiments while in the natural environment many salts remain present together with NaCl.…”

Section: Introductionmentioning

confidence: 99%

Salinity induced changes in proline and betaine contents and synthesis in two aquatic macrophytes differing in salt tolerance

Tripathi¹,

Gurumurthi²,

Panigrahi³

et al. 2007

Biologia plant.

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The present work investigated the effect of NaCl and seawater salinity (SWS) on accumulation of proline and glycinebetaine (betaine) and expression of two key enzymes of their biosynthetic pathway, betainealdehyde dehydrogenase (BADH) and Δ 1 -pyrroline-5-carboxylate synthetase (P5CS) in two aquatic macrophytes, salt-tolerant Najas gramenia and moderately-salt-tolerant Najas indica. N. gramenia did not show any accumulation of betaine or expression of BADH in response to NaCl or SWS treatments. The content of proline increased significantly in response to the salt treatments. High expression of P5CS was also observed, however, the transcript abundance did not correlate with the amount of proline. N. indica, exhibited significantly greater accumulation of proline in response to SWS, which contained Ca 2+ in addition to NaCl, than in response to NaCl alone.Additional key words: betaine aldehyde dehydrogenase, NaCl, Najas gramenia, Najas indica, Δ 1 -pyrroline-5-carboxylate synthetase, seawater salinity.

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Transgenic plants with improved dehydration-stress tolerance: Progress and future prospects

Cited by 49 publications

References 134 publications

Effect of glycinebetaine on function of thylakoid membranes in wheat flag leaves under drought stress

Effect of glycinebetaine on function of thylakoid membranes in wheat flag leaves under drought stress

Effects of drought on water content and photosynthetic parameters in potato plants expressing the trehalose-6-phosphate synthase gene of Saccharomyces cerevisiae

Salinity induced changes in proline and betaine contents and synthesis in two aquatic macrophytes differing in salt tolerance

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