Role of proline under changing environments

Hayat, Shamsul; Hayat, Qaiser; Alyemeni, Mohammed Nasser; Wani, Arif Shafi; Pichtel, John; Ahmad, Aqil

doi:10.4161/psb.21949

Cited by 2,117 publications

(1,392 citation statements)

References 153 publications

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“…Salt stress clearly reduced total chlorophyll content of B. juncea leaves, which is in agreement with earlier findings of Weisany et al (2011), Hayat et al (2012, and Iqbal et al (2015) in different plant species. Salt stress is known to hamper the synthesis of enzymes involved in the generation and protection of photosynthetic pigments (El-Tayeb 2005).…”

Section: Discussionsupporting

confidence: 82%

“…Moreover, upregulated osmolytes' (e.g. proline, glycine betaine, and soluble sugars) synthesis and accumulation protect proteins, enzymes, and other biologically important molecules (Hayat et al 2012;Ahanger and Agarwal 2017). These osmotically active solutes act as antioxidants and contribute to water content maintenance for optimal cellular functioning (Ahanger et al 2014(Ahanger et al , 2015Anjum et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Zinc application mitigates the adverse effects of NaCl stress on mustard [Brassica juncea (L.) Czern & Coss] through modulating compatible organic solutes, antioxidant enzymes, and flavonoid content

Ahmad

Ahanger

Alyemeni

et al. 2017

Journal of Plant Interactions

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Section: Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Zinc application mitigates the adverse effects of NaCl stress on mustard [Brassica juncea (L.) Czern & Coss] through modulating compatible organic solutes, antioxidant enzymes, and flavonoid content

Ahmad

Ahanger

Alyemeni

et al. 2017

Journal of Plant Interactions

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“…Proline prevents the protein denaturation, thereby maintaining the integrity of membranes in heat-induced dehydration stress. Likewise, proline protects photosynthetic machinery of plants, and acts as a source of nitrogen, carbon and energy for plants during recovery from stress (Hayat et al, 2012). Moreover, accumulation of proline in response to HS stress could be attributed to the generation of reactive oxygen species (ROS).…”

Section: Resultsmentioning

confidence: 99%

“…Proline, an amino acid, which is increased in response to diverse types of abiotic stresses (Kaushal et al, 2011), has several roles in turgor generation, osmotic adjustment, storage of carbon and nitrogen, and cellular redox potential. Furthermore, proline could maintain the enzyme structure and activity (Kaushal et al, 2011) and thus protect membrane integrity (Hayat et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Hussain

Ashraf

Rasheed

et al. 2016

International Agrophysics

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A b s t r a c t. The present investigation was conducted to appraise the physiochemical adjustments in contrasting maize cultivars, namely, PakAfgoi (tolerant) and EV-5098 (sensitive) subjected to heat shock. Seven-day-old seedlings were exposed to heat shock for different time intervals (1, 3, 6, 24, 48 and 72 h) and data for various physiochemical attributes determined to appraise time course changes in maize. After 72 h of heat shock, the plants were grown under normal conditions for 5 d and data for different growth attributes and photosynthetic pigments recorded. Exposure to heat shock reduced growth and photosynthetic pigments in maize cultivars. The plants exposed to heat shock for up to 3 h recovered growth and photosynthetic pigments when stress was relieved. A time course rise in the relative membrane permeability, hydrogen peroxide (H 2 O 2 ) and malondialdehyde contents was recorded particularly in the EV-5098 indicating that heat shock-induced oxidative stress. Activities of different enzymatic antioxidants greatly altered due to heat shock. For instance, an increase in superoxide dismutase activity was recorded in both maize cultivars. The activity of ascorbate peroxidase was greater in Pak-Afgoi. However, the peroxidase and catalase activities were higher in plants of . Heat shock caused a significant rise in the proline and decline in the total free amino acids. Overall, the performance of Pak-Afgoi was better in terms of having lesser oxidative damage and greater cellular levels of proline. The results suggested that oxidative stress indicators (relative membrane permeability, H 2 O 2 and malondialdehyde) and proline can be used as markers for heat shock tolerant plants.

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“…A deficiência hídrica afeta os vegetais provocando adequações fisiológicas comuns à planta durante a seca, como a regulação osmótica, que promove a biossíntese e acúmulo de prolina e glicina-betaína (ASHRAF & HARIS, 2004;HAYAT et al, 2012). Para os mesmos autores, as concentração desses metabolitos, ajudam na proteção da planta auxiliando na manutenção da turgescência celular, por meio do ajustamento osmótico das células e resguardando a integridade…”

Section: Fundamentação Teóricaunclassified

Prolina, Glicina-Betaína, Açúcares Redutores E Não Redutores Em Progênies De Cupuaçuzeiro Submetidas À Deficiência Hídrica

Teixeira¹,

Palheta²,

Conceição³

et al. 2017

Políticas Educacionais E Suas Interfaces: Desafios E Perspectivas Na Construção De Sociedades Sustentáveis

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IntroduçãoO cupuaçuzeiro [Theobroma grandiflorum (Willd. ex. Spreng.) Schum.,] é uma árvore nativa da Amazônia pertencente à família Malvaceae, a qual é considerada uma espécie frutífera com alto potencial de expansão, devido a abertura do mercado para frutas exóticas tropicais, especialmente aquela oriunda da floresta Amazônica, sendo encontrada em estado rústico nas florestas tropicais de terra firme e apresenta importância econômica, social e ambiental para a região (ALVES et al., 2012).Atualmente, seu cultivo vem sendo implantado em locais que possuem a ocorrência de períodos secos bem definidos, com aproximadamente seis meses de pluviosidade abaixo de 100 mm com o intuito de prevenir o surgimento de doenças (FERNANDES, 2015). Dessa forma, o comportamento agronômico de plantas de cupuaçuzeiro necessita ser compreendido, uma vez que, entender o mecanismo de resposta dessa espécie em condição de restrição hídrica, é de suma importância ao desenvolvimento agrícola das plantas, ao manejo e a produtividade dessa espécie.Assim, o objetivo foi avaliar o potencial hídrico e os teores de prolina, glicina-betaína, açúcares redutores e não redutores em progênies de cupuaçuzeiro submetidas a deficiência hídrica.] Fundamentação TeóricaA deficiência hídrica afeta os vegetais provocando adequações fisiológicas comuns à planta durante a seca, como a regulação osmótica, que promove a biossíntese e acúmulo de prolina e glicina-betaína (ASHRAF & HARIS, 2004;HAYAT et al., 2012). Para os mesmos autores, as concentração desses metabolitos, ajudam na proteção da planta auxiliando na manutenção da turgescência celular, por meio do ajustamento osmótico das células e resguardando a integridade

show abstract

Role of proline under changing environments

Cited by 2,117 publications

References 153 publications

Zinc application mitigates the adverse effects of NaCl stress on mustard [Brassica juncea (L.) Czern & Coss] through modulating compatible organic solutes, antioxidant enzymes, and flavonoid content

Zinc application mitigates the adverse effects of NaCl stress on mustard [Brassica juncea (L.) Czern & Coss] through modulating compatible organic solutes, antioxidant enzymes, and flavonoid content

Heat shock increases oxidative stress to modulate growth and physico-chemical attributes in diverse maize cultivars

Prolina, Glicina-Betaína, Açúcares Redutores E Não Redutores Em Progênies De Cupuaçuzeiro Submetidas À Deficiência Hídrica

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