Effect of drought and combined drought and heat stress on polyamine metabolism in proline-over-producing tobacco plants

Cvikrová, Milena; Gemperlová, Lenka; Martincová, Olga; Vaňková, Radomı́ra

doi:10.1016/j.plaphy.2013.08.005

Cited by 133 publications

(67 citation statements)

References 51 publications

(60 reference statements)

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“…72 Similarly, the relationship of PA and proline in drought and heat stress tolerance responses in proline overproducing transgenic tobacco (Nicotiana tabacum) plants was explained: increased Spm level was one factor that imparted stress tolerance. 73 These studies indicate that manipulation of proline synthesis also affects the level of PA by developing stress tolerance and adaptation. Stress induced accumulation of proline and different PAs were known to improve osmotic stress tolerance and maintaining ionic balances in cellular environment.…”

Section: Metal Stressmentioning

confidence: 94%

Polyamines in response to abiotic stress tolerance through transgenic approaches

2014

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The distribution, growth, development and productivity of crop plants are greatly affected by various abiotic stresses. Worldwide, sustainable crop productivity is facing major challenges caused by abiotic stresses by reducing the potential yield in crop plants by as much as 70%. Plants can generally adapt to one or more environmental stresses to some extent. Physiological and molecular studies at transcriptional, translational, and transgenic plant levels have shown the pronounced involvement of naturally occurring plant polyamines (PAs), in controlling, conferring, and modulating abiotic stress tolerance in plants. PAs are small, low molecular weight, non-protein polycations at physiological pH, that are present in all living organisms, and that have strong binding capacity to negatively charged DNA, RNA, and different protein molecules. They play an important role in plant growth and development by controlling the cell cycle, acting as cell signaling molecules in modulating plant tolerance to a variety of abiotic stresses. The commonly known PAs, putrescine, spermidine, and spermine tend to accumulate together accompanied by an increase in the activities of their biosynthetic enzymes under a range of environmental stresses. PAs help plants to combat stresses either directly or by mediating a signal transduction pathway, as shown by molecular cloning and expression studies of PA biosynthesis-related genes, knowledge of the functions of PAs, as demonstrated by developmental studies, and through the analysis of transgenic plants carrying PA genes. This review highlights how PAs in higher plants act during environmental stress and how transgenic strategies have improved our understanding of the molecular mechanisms at play.

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Section: Metal Stressmentioning

confidence: 94%

Polyamines in response to abiotic stress tolerance through transgenic approaches

2014

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“…Esse acúmulo fornece um importante parâmetro para a seleção de plantas resistentes (Verbruggen & Hermans, 2008). Além disso, é comum a constatação de que teores aumentados de prolina atenuam os efeitos do estresse hídrico (Cvikrová et al, 2013;Filippou et al, 2014). Segundo os autores, o acúmulo ocorre pela síntese "de novo" ou pela inibição do processo de oxidação da prolina.…”

Section: Introductionunclassified

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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“…In contrast, Cvikrová et al (2013) demonstrated the possible involvement of proline in the protection of tobacco plants from drought and heat stress combination, possibly by modulating polyamine biosynthesis.…”

Section: Stressmentioning

confidence: 94%

“…Although past and current research on plants subjected to a single abiotic stress condition such as water deficit or heat, have provided important information over the last decades, many of these results cannot be used to infer the effects of a combination of two or more different stresses on plants . Recently, significant progress has been made in understanding the physiological, metabolic and molecular responses of several plant species to a combination of different abiotic stress conditions , Barnabás et al 2008, Rasmussen et al 2013, Ahmed et al 2013, Rivero et al 2013, Cvikrová et al 2013, Zinta et al 2014, Perdomo et al 2014, Zandalinas et al 2016a, Zandalinas et al 2016b). These studies have concluded that each combination of two or more stress conditions imposes a specific set of requirements on the plant.…”

Section: The Importance Of Investigating Abiotic Stress Combinationmentioning

confidence: 99%

“…These environmental challenges lead to a wide range of responses in plants, including morphological, physiological, biochemical and molecular changes that adversely affect plant growth and productivity. Plant cells perceive stress stimuli via various sensors that in turn activate signaling pathways involving secondary messengers, plant hormones, signal transducers and transcriptional regulators (Cvikrová et al 2013, Gilroy et al 2014. Multiple signals, therefore, converge to regulate stress-inducible Introduction 6 environmental cues are stress-response transcription factors (TFs).…”

Section: Introductionmentioning

confidence: 99%

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Plant strategies to deal with a combination of drought and high temperatures

Zandalinas¹

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Effect of drought and combined drought and heat stress on polyamine metabolism in proline-over-producing tobacco plants

Cited by 133 publications

References 51 publications

Polyamines in response to abiotic stress tolerance through transgenic approaches

Polyamines in response to abiotic stress tolerance through transgenic approaches

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

Plant strategies to deal with a combination of drought and high temperatures

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