Overexpression of a Δ1-pyrroline-5-carboxylate synthetase gene and analysis of tolerance to water- and salt-stress in transgenic rice

Bao-cheng, Zhu; Su, Jin; Chang, Maria; Verma, Desh Pal S.; Fan, Yanting; Wü, Ray

doi:10.1016/s0168-9452(98)00175-7

Cited by 330 publications

(157 citation statements)

References 18 publications

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“…These data suggest that N-NH 4 + treatment produces some response mechanism which benefits citrange Carrizo plants to better tolerate exposure to 90 mM NaCl. Salinity is a complex environmental stress that presets three different components: an ionic component linked to the accumulation of ions, mainly Cl -in citrus plants (Brumós et al, 2009); an osmotic component due to compartmentalization of this toxic ion in the vacuole, which triggers accumulation of low molecular-weight osmolytes (Zhu et al, 1998); and increased ROS formation, which is considered the primary event under a variety of stress conditions (Hernandez and Almansa, 2002). N-NH 4 + -treated plants are capable of reduced Cl -leaves accumulation after 14 d of salt exposure.…”

Section: Discussionmentioning

confidence: 99%

Ammonium enhances resistance to salinity stress in citrus plants

Fernández-Crespo

Camañes

García‐Agustín

2012

Journal of Plant Physiology

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In this work, we demonstrate that NH 4 + nutrition in citrange Carrizo plants acts as an inducer of resistance against salinity conditions. We investigated its mode of action and provide evidence that NH 4 + confers resistance by priming abscisic acid and polyamines, just as enhancing H 2 O 2 and proline basal content. Moreover it observed a diminished Cl -uptake as well as an enhanced PHGPx expression after salt stress. Control and N-NH 4 + plants have shown optimal growth, however it was observed that N-NH 4 + plants have displayed greater dry weight and total lateral roots than control plants, but that differences are not seen for primary roots length. Our results reveal that N-NH 4 + treatment induces a similar phenotypical response to the recent stress-induced morphogenetic response (SIMRs). The hypothesis is that N-NH 4 + treatment triggers mild chronic stress in citrange Carrizo plants, which might explain the SIMR observed. Moreover, we observed modulators of stress signaling, such as H 2 O 2 in N-NH 4 + plants, which could acts as an intermediary between stress and the development of the SIMR phenotype. This observation suggests that NH 4 + treatments induce a mild stress condition that primes the citrange Carrizo defense response by stress imprinting and confers protection against a subsequent salt stress.

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Section: Discussionmentioning

confidence: 99%

Ammonium enhances resistance to salinity stress in citrus plants

Fernández-Crespo

Camañes

García‐Agustín

2012

Journal of Plant Physiology

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“…A study performed by Zhu and coworkers on transgenic rice overexpressing P5CS showed an enhanced tolerance to osmotic stress caused by salinity and drought. Transgenic Acta Physiol Plant (2014) 36:1-19 5 plants demonstrated an increase of biomass under salt and water stress in comparison with non-transformed plants (Zhu et al 1998). It was also demonstrated that proline overproduction in transgenic tobacco led to lower reduction of leaf osmotic potentials during drought, when comparing with the wild plants.…”

Section: Osmolyte Biosynthetic Enzymesmentioning

confidence: 95%

Influence of abiotic stresses on plant proteome and metabolome changes

et al. 2013

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Plant responses to abiotic stresses are very complex phenomena with individual characteristics for various species. Abiotic stresses (e.g. drought, salinity, flooding, cold, heat, UV radiation, heavy metals, etc.) strongly affect plant growth and development. It is estimated that they are the cause of more than 50 % of crop yield losses. Abiotic stresses are known to activate a multigene response resulting in the changes in various proteins and primary and secondary metabolite accumulation. Therefore, proteomic and metabolomic approaches are becoming very important and powerful tools used in studying plants' reaction to various stimuli. Precise analysis of proteome and metabolome is essential for understanding the fundamentals of stress physiology and biochemistry. In this review, we focus on recent reports concerned to the influence of abiotic stresses on changes in the level of different protein groups and metabolite classes. Basic information about physicochemical methods applied to qualitative and quantitative analyses of biopolymers and natural products is also briefly presented.

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“…Nearly 20% of the world's cultivated area and nearly half of the world's irrigated lands are affected by salinity (Zhu 2001). Salinity adversely affects almost all stages of growth and development, flowering and fruit set, ultimately causing low economic yield and poor quality of production (Ashraf and Harris 2004).…”

mentioning

confidence: 99%

Halopriming improves vigor, metabolism of reserves and ionic contents in wheat seedlings under salt stress

Afzal¹,

Rauf²,

Murtaza³

2008

Plant Soil Environ.

114

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The present study was conducted to investigate whether salt tolerance may be induced in wheat at germination stage by halopriming with different inorganic salts (CaCl 2 , NaCl and CaSO 4 ), and how far these salts affect the mobilization of different nutrients to different parts of seedlings. Seeds of two wheat cultivars (Inqlab-91 and SARC-1) were primed in 50 mmol solutions of CaCl 2 , NaCl or CaSO 4 for 12 h separately and germinated under non-saline and saline (125 mmol NaCl) conditions. All seed treatments hastened germination under saline and non-saline conditions as compared to those of non-primed seeds. However, priming with CaSO 4 enhanced germination of both cultivars under saline conditions more than any other treatment. Maximum root length and fresh and dry weights were obtained in plants raised from seeds primed with CaSO 4 followed by CaCl 2 . Concentrations of Na + and K + in seedlings obtained after priming changed significantly. However, Na + was highest in seedlings raised from seeds primed with NaCl whereas the concentration of K + was highest in the seedlings primed with CaSO 4 . Maximum total sugars and reducing sugars were observed when seeds were treated with CaCl 2 followed by CaSO 4 . In addition, SARC-1 overcame Inqlab-91 in all growth parameters of the seedlings. In conclusion, different salts used for priming in wheat seeds improved the salt stress tolerance; however, CaSO 4 and CaCl 2 proved to be the most effective priming agents in inducing salt tolerance in both wheat cultivars whereas NaCl was a less effective priming agent.

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Overexpression of a Δ1-pyrroline-5-carboxylate synthetase gene and analysis of tolerance to water- and salt-stress in transgenic rice

Cited by 330 publications

References 18 publications

Ammonium enhances resistance to salinity stress in citrus plants

Ammonium enhances resistance to salinity stress in citrus plants

Influence of abiotic stresses on plant proteome and metabolome changes

Halopriming improves vigor, metabolism of reserves and ionic contents in wheat seedlings under salt stress

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