Contribution of putrescine degradation to proline accumulation in soybean leaves under salinity

Guo-xing, SU; Bai, Xin

doi:10.1007/s10535-008-0156-7

Cited by 38 publications

(29 citation statements)

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“…The role of PGR on proline content had also been reported earlier (Khan et al 2013;Gupta and Huang 2014). Su and Bai (2008) demonstrated negative correlation between accumulation of proline and endogenous Put content in soyabean leaves grown under stress condition. Water soluble, stress proteins play an important role in plants to tolerate stress (Wahid 2007).…”

Section: Discussionsupporting

confidence: 69%

Effects of exogenously applied plant growth regulators in combination with PGPR on the physiology and root growth of chickpea (Cicer arietinum) and their role in drought tolerance

Khan

Bano

Zandi

2018

Journal of Plant Interactions

138

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Both the plant growth promoting rhizobacteria (PGPR) and plant growth regulators (PGR) exert beneficial effects on plant growth even under stress, but combined effect of both of them has not been evaluated yet. Present investigation was aimed to determine the responses of 2 chickpea varieties (differing in drought tolerance) to 3 PGPR viz. Bacillus subtilis, Bacillus thuringiensis and Bacillus megaterium and PGR (SA and Putrescine) on physiology of chickpea grown in sandy soil. The PGR, Salicylic acid (SA) and Putrescine (Put) were sprayed on the seedling 20 days after germination. Results revealed, synergistic effects of PGPR and PGR on chlorophyll, protein and sugar contents. Addition of PGR to PGPR inoculated plants assisted the plant in osmoregulation and amelioration of oxidative stresses and in induction of new proteins. Combined application of PGR and PGPR decreased lipid peroxidation more effectively but increased the leaf area. It is inferred that PGPR and PGR work synergistically to promote growth of plants under moisture and nutrient deficit condition of sandy soil. Since, SA induces Systemic Acquired Resistance (SAR) in plants hence the addition of SA along with PGPR may render the plant more productive and better tolerant to diseases/pathogen attack. ARTICLE HISTORY

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Section: Discussionsupporting

confidence: 69%

Effects of exogenously applied plant growth regulators in combination with PGPR on the physiology and root growth of chickpea (Cicer arietinum) and their role in drought tolerance

Khan

Bano

Zandi

2018

Journal of Plant Interactions

138

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“…A utilização da putrescina exógena em plantas de soja e citros submetidas a estresse salino aumenta os teores foliares de prolina e contribui para uma resposta positiva das plantas aos efeitos da salinidade (Su & Bai, 2008;Sharma et al, 2011). No presente trabalho, entretanto, o tratamento com 0,5 mmol L -1 de putrescina não foi efetivo em minimizar a redução do crescimento da parte aérea e das raízes das plântulas de guandu submetidas à restrição hídrica (Figura 3).…”

Section: Figura 1 Teores De Prolina (µMol Gunclassified

“…Su & Bai (2008), por exemplo, investigaram a atividade da enzima diamina oxidase, envolvida na degradação da putrescina e fornecedora de substratos para a síntese de prolina. Apesar de não terem sido capazes de proteger as plântulas dos estresses estudados, os conteúdos de prolina podem ser considerados indicadores bioquímicos e fisiológicos efetivos dos efeitos da restrição hídrica e da salinidade, em guandu.…”

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Crescimento e conteúdo de prolina em plântulas de guandu submetidas a estresse osmótico e à putrescina exógena

Monteiro¹,

Cruz

Nardin

et al. 2014

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi verificar o efeito da aplicação da poliamina putrescina no acúmulo de prolina e no crescimento inicial de plântulas de guandu cultivadas sob estresse hídrico ou salino, e avaliar se esta poliamina pode ser usada como atenuadora desses estresses. Sementes de duas cultivares de guandu, BRS Mandarim e Caqui, foram germinadas em caixas gerbox forradas com papel de filtro umedecido com 0,0, -0,2, -0,3, -0,4, -0,5 MPa de PEG 6000 ou 0, 20, 40, 60, 80 e 120 mmol L -1 de NaCl, na ausência (0 mmol L -1 ) ou na presença (0,5 mmol L -1 ) de putrescina. Utilizou-se o delineamento inteiramente casualizado, em arranjo fatorial 2x5x2 e 2x6x2 (duas cultivares, cinco níveis de deficiência hídrica ou seis níveis de estresse salino, e presença ou ausência de putrescina), com quatro repetições. O crescimento das plântulas é acentuadamente reduzido pelas condições de restrição hídrica e salinidade. A putrescina exógena incrementa, sob ambos os estresses, os teores de prolina nas plântulas de guandu, especialmente na cultivar BRS Mandarin, e atenua os efeitos da deficiência hídrica moderada nas cultivares estudadas. Os estresses de restrição hídrica e de salinidade causam acúmulo de prolina na parte aérea e nas raízes de ambas as cultivares. A prolina pode ser considerada um bom indicador bioquímico e fisiológico desses estresses em plântulas de guandu.Termos para indexação: Cajanus cajan, indicador bioquímico, poliamina, restrição hídrica, salinidade, solutos compatíveis.Growth and proline content in pigeon pea seedlings subjected to osmotic stress and to exogenous putrescine Abstract -The objective of this work was to verify the effect of the application of the polyamine putrescine on the accumulation of proline and on the early seedling growth of pigeon pea subjected to water or salt stress, and to evaluate whether this polyamine can be used to alleviate these stresses. Seeds of two cultivars of pigeon pea, BRS Mandarim and Caqui, were germinated in gerbox boxes lined with filter papers soaked with 0.0, -0.2, -0.3, -0.4, -0.5 MPa PEG 6000 or 0, 20, 40, 60, 80, and 120 mmol L -1 NaCl, in the absence (0 mmol L -1 ) or presence (0.5 mmol L -1 ) of putrescine. A completely randomized design was used, in a 2x5x2 and 2x6x2 factorial arrangement (two cultivars, five levels of drought or six levels of salt stress, and presence or absence of putrescine), with four replicates. Seedling growth is highly reduced by water restriction and salinity conditions. Exogenous putrescine increases, under both stresses, the proline contents in pigeon pea seedlings, especially in the cultivar BRS Mandarin, and alleviates the effects of moderate water deficiency on the studied cultivars. Water restriction and salinity stresses cause accumulation of proline content in shoots and roots of both cultivars. Proline can be considered a good biochemical and physiological indicator of these stresses in pigeon pea seedlings.Index terms: Cajanus cajan, biochemical indicator, polyamine, water restriction, salinity, compatible so...

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“…Interesting studies demonstrate that under salt stress Put catabolism via DAO contributes to Pro accumulation and provides about one third of the total GABA content [9,[20][21][22][23]. It has been shown that in response to salt stress, DAO and polyamine oxidase (PAO; EC 1.5.3.11) activity is prompted in tomato leaves, soybean roots, and in rice roots and shoots [9,21,24].…”

Section: Digital Signaturementioning

confidence: 99%

“…There is only limited information on the rates of PA degradation and Pro accumulation under salt stress. To date, in a few cases only, such as tomato leaf discs [9], Fraxinus angustifolia callus [20], and soybean leaves [21,22] subjected to salt stress, it was shown that polyamine degradation promoted a proline accumulation.…”

Section: Digital Signaturementioning

confidence: 99%

Putrescine catabolism via DAO contributes to proline and GABA accumulation in roots of lupine seedlings growing under salt stress

et al. 2017

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The levels of polyamines (PAs), proline (Pro), and γ-aminobutyric acid (GABA) as well as the activity of diamine oxidase (DAO; EC 1.4.3.6) were studied in the roots of 2-day-old lupine (Lupinus luteus L. 'Juno') seedlings treated with 200 mM NaCl for 24 h. The effect of adding 1 mM aminoguanidine (AG), an inhibitor of DAO activity, was also analyzed. It was found that in roots of lupine seedlings growing under salt stress, a negative correlation between Pro accumulation and putrescine (Put) content takes place. Pro level increased in roots by about 160% and, at the same time, Put content decreased by about 60%, as a result of ca. twofold increase of DAO activity. The AG added to the seedlings almost totally inhibited the activity of DAO, increased Put accumulation to control level, decreased Pro content by about 25%, and reduced GABA level by about 22%. Addition of 50 mM GABA to the lupine seedlings growing in the presence of AG and NaCl restored Pro content in roots to its level in NaCl-treated plants. In this research, the clear correlation between Put degradation and GABA and Pro accumulation was shown for the first time in the roots of seedlings growing under salt stress. This could be considered as a short-term response of a plant to high salt concentration. Our findings indicate that during intensive Pro accumulation in roots induced by salt stress, the pool of this amino acid is indirectly supported by GABA production as a result of Put degradation.

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Contribution of putrescine degradation to proline accumulation in soybean leaves under salinity

Cited by 38 publications

References 19 publications

Effects of exogenously applied plant growth regulators in combination with PGPR on the physiology and root growth of chickpea (Cicer arietinum) and their role in drought tolerance

Effects of exogenously applied plant growth regulators in combination with PGPR on the physiology and root growth of chickpea (Cicer arietinum) and their role in drought tolerance

Crescimento e conteúdo de prolina em plântulas de guandu submetidas a estresse osmótico e à putrescina exógena

Putrescine catabolism via DAO contributes to proline and GABA accumulation in roots of lupine seedlings growing under salt stress

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