Multiple roles of proline in plant stress tolerance and development

Trovato, Maurizio; Mattioli, Roberto; Costantino, Paolo

doi:10.1007/s12210-008-0022-8

Cited by 266 publications

(144 citation statements)

References 115 publications

(154 reference statements)

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“…Table 6. The effect of NaCl, proline and their interaction on the height (cm) (A) and leaf number (B) of Citrus sinensis (L.) Osbeck plantlet (Abbas et al, 2012 Physiological role of proline Proline at optimum level has several roles such as osmoprotectant, turgor generation, storage of carbon and nitrogen, maintenance of the structure of proteins, maintenance of cytosolic pH, balance of redox status,acting as a part of stress signal, an inhibitor of lipid membrane peroxidation and antioxidant as effective quencher of ROS formed under stress conditions in plants (Maggio et al, 2002;Ashraf and Foolad, 2007;Trovato et al, 2008;Hayat et al, 2012).…”

Section: Effective Doses Of Prolinementioning

confidence: 99%

Influence of osmoregulators on plant tolerance to water stress

2016

Sci. Agric

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CitationDawood MG. 2016. Influence of osmoregulators on plant tolerance to water stress, 13 (1), 42-58. Retrieved from www.pscipub.com (DOI: 10.15192/PSCP. SA.2016.13.1.4258) This article highlights on some recent researches, which studied the impact of osmoregulator compounds and their application on the plant in order to increase the plant tolerance to water stress. Water stress limits the growth, productivity and quality of agricultural crops in the world. Water Stress is not only due to the scarcity of water but also due other factors such as salinity, high temperatures and severe cold that make plants not able to absorb enough water from soil to grow well and this is called physiological drought that leads to a series of disorders in physiological and biochemical processes mainly due to lack of osmotic (internal water content of the plant deficiency), and the toxicity of salt ions. One way to overcome the negative impact of water stress on plants is the use of osmoregulators compounds formed by the plant when exposed to stress such as glycinebetaine, proline and trehalose. Osmoregulator compounds mainly regulate osmotic pressure within the plant to be able to absorb water and also have influential and effective roles on a lot of vital processes in the plant. they protect membranes of chloroplasts and thus increase the photosynthesis efficiency and have the ability to protect cell walls and membranes, which leads to stability and the organization of permeability and play an important role in scavenging the free radicals thus lead to mitigate the adverse impact of stress and improve growth, productivity and quality of plants. It can be concluded from this article that the best material used to increase plant tolerance to water stress is glycinebetaine where it can be obtained in large quantities and at low prices, making use it appropriately in economic terms as well as effective impact on increasing the tolerance of plants to water stress and reflected in increasing crop quantity and quality. Moreover, the use of proline has also an influential and effective role in increasing plant tolerance to water stress, but more expensive than glycinebetaine. Trehalose is an efficient protectant against water deficit conditions, and it is also effective in reducing oxidative stress but trehalose considered the most expensive, until now. We must intensify efforts to study and understand more of the physiological and biochemical changes played by these substances within the plant under stress conditions to improve plant productivity under water stress with modest economic cost.

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Section: Effective Doses Of Prolinementioning

confidence: 99%

Influence of osmoregulators on plant tolerance to water stress

2016

Sci. Agric

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“…Furthermore, during flower, embryo and other developmental processes it may support the energetic needs of rapidly dividing or elongating cells. 3,19 Proline was found to be the most abundant amino acid in mature and germinated Arabidopsis pollen, accounting for 60-65% of the free amino acid pool. 20 Water stress at maize tassel initiation showed a greater influence on proline, ABA levels and yield than that at anthesis.…”

Section: Resultsmentioning

confidence: 99%

“…However the expansion of oxidative stress research has given many new insights into the role of proline in plants. Today it is clear that proline is a multifunctional amino acid [1][2][3][4] with many metabolism pathways being revealed. [5][6][7] The proline concentrations of cells, tissues and plant organs are regulated by the interplay of biosynthesis, degradation and intra-as well as intercellular transport processes.…”

Section: Introductionmentioning

confidence: 99%

The relationship of proline content and metabolism on the productivity of maize plants

Špoljarević

Agić

Lisjak

et al. 2011

Plant Signaling & Behavior

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“…In this case, those compatible solutes are often designated as osmoprotectors. Proline and trehalose are some of the main compatible solutes largely studied in the evaluation of plants to detect tolerance to drought, and often used as plant breeding tool to segregate sensible and tolerant genotypes (Trovato et al, 2008;Anami et al, 2009). Although trehalose has been considered as osmoprotector, lately some authors have reported that it should not be regarded only as a protective sugar, and that further investigation is required to elucidate its exact role in the stress tolerance in plants (Paul et al, 2008;Fernandez et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Although trehalose has been considered as osmoprotector, lately some authors have reported that it should not be regarded only as a protective sugar, and that further investigation is required to elucidate its exact role in the stress tolerance in plants (Paul et al, 2008;Fernandez et al, 2010). It is also advocated that trehalose and proline are used as energy sources, and that proline may be metabolized as nitrogen source readily available for plant re-establishment just after the period of water limitation (Kavi Kishor et al, 2005;Trovato et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Proline and trehalose in maize seeds germinating under low osmotic potentials

Queiroz

Cazetta

2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TAlthough it is relatively well known that adult plants tend to accumulate proline and trehalose in their tissues as a physiological mechanism in response to drought, there is scarce information about the development of this physiological response in seeds. Thus, the objective of this research was to verify if maize seeds are able to develop mechanism of osmoprotection, when are germinating under low osmotic potential, and the possibility to use the levels of trehalose and proline in a defined seed part, aiming to differentiate genotypes regarding drought tolerance. The experiment was performed as a factorial arrangement of 2 x 5 (2 hybrids x 5 osmotic potential) within a completely randomized design, with four replicates. It was found that the proline content in the embryo axis of maize seeds germinating under water limitation is directly proportional to the intensity of this stress. Distinct hybrids show different proline levels accumulated in the embryo axis, when seeds are germinating under the same conditions of water limitation. The trehalose content tends to decrease in the embryo axis and in the endosperm of maize seeds germinating under increasing water limitation, but the reduction is not directly proportional to osmotic potential.Prolina e trealose em sementes de milho germinando em baixos potenciais osmóticos R E S U M O Embora seja relativamente bem conhecido que as plantas adultas tendem a acumular prolina e trealose como mecanismo fisiológico em resposta à seca, há pouca informação sobre o desenvolvimento desta resposta em sementes. Assim, esta pesquisa objetivou avaliar se sementes de milho são capazes de desenvolver mecanismos de osmoproteção quando postas para germinar em condições de baixos potenciais osmóticos, bem como a possibilidade de usar os níveis de trealose e prolina como indicadores bioquímicos para diferenciar genótipos quanto à tolerância à seca. O experimento constou de um esquema fatorial de 2 x 5 (2 híbridos x 5 potenciais osmóticos) conduzido em um delineamento inteiramente casualizado com quatro repetições. Observou-se que o teor de prolina no eixo do embrião de sementes de milho postas para germinar sob limitação hídrica, é diretamente proporcional à intensidade do estresse. Híbridos distintos mostram diferentes níveis de prolina no eixo embrionário quando as sementes germinam nas mesmas condições de limitação hídrica. O teor de trealose diminui, tanto no eixo embrionário como no endosperma de sementes de milho postas para germinar sob crescente limitação hídrica mas a redução não é diretamente proporcional à intensidade do estresse.

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Multiple roles of proline in plant stress tolerance and development

Cited by 266 publications

References 115 publications

Influence of osmoregulators on plant tolerance to water stress

Influence of osmoregulators on plant tolerance to water stress

The relationship of proline content and metabolism on the productivity of maize plants

Proline and trehalose in maize seeds germinating under low osmotic potentials

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