Induction of Drought Tolerance in Maize (Zea mays L.) due to Exogenous Application of Trehalose: Growth, Photosynthesis, Water Relations and Oxidative Defence Mechanism

Ali, Shafaqat; Ashraf, Muhammad

doi:10.1111/j.1439-037x.2010.00463.x

Cited by 232 publications

(181 citation statements)

References 62 publications

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“…In addition they observed that decrease of t-ferulic acid was around 35 and 31% after drought treatment in the studied hybrids which is in the range of the present study. Ali and Ashraf (2011) studied the effect of drought treatment on the secondary metabolites of maize leaves and they found decreasing levels around 27 and 25% in total phenols for ʽEV-1098ʼ and ʽAgaiti-2002ʼ maize cultivars, being these results lower than the current data. Alvarez et al (2008) analysed xylem sap of ʽFR697ʼ maize cultivar after 12 days of drought treatment and they observed the same pattern of hydroxycinnamic acids composition of the present study, reporting that t-ferulic acid was the predominant with a decreasing of 46% of this compound after drought treatment and this result was higher than the current experiment, in addition p-coumaric acid increased 286% which is a different behaviour comparing with the current results.…”

Section: Total Phenols and Hydroxycinnamic Acidscontrasting

confidence: 69%

Water Stress Effect on Cell Wall Components of Maize (<i>Zea mays</i>) Bran

et al. 2016

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In México, around 82% of the total production of maize is grown under rainfed conditions leading to a water stress environmen affects physiologic and biochemical process of the plant. Maize bran is a composited plant material consisting mainly in al and pericarp; the cell walls of these tissues are composed of proteins, non potential bioactive substances for human nutrition. In this research the bran of three genotypes of maize phenols and phenolic acids was performed in the bran of development stage increased protein levels of content, water stress increase increased in water stress treatment at levels of 1.28, 2.26 and 3.66% in treatment decreased the levels of total phenols and hydroxycinnamic acids in the three maize hybrids analysed. Reduction of t was 35.34, 5.59 and 31.57% for acids decreased 17. 74, 23.93, 29.83% in

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Section: Total Phenols and Hydroxycinnamic Acidscontrasting

confidence: 69%

Water Stress Effect on Cell Wall Components of Maize (<i>Zea mays</i>) Bran

et al. 2016

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“…Ali and Ashraf (2011) mentioned that trehalose is an efficient protectant against water deficit conditions. Exogenous trehalose application was also effective in reducing oxidative stress (Ma et al, 2013).…”

Section: Role Of Trehalose In Mitigating Water Stressmentioning

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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“…These defense mechanisms are employed to overcome the stress and restore normal metabolism (Soares;Machado, 2007, Ali;Ashraf, 2011;Karuppanapandian et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Photosynthetic and enzymatic metabolism of Schinus terebinthifolius Raddi seedlings under water deficit

et al. 2017

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Schinus terebinthifolius Raddi is a tree species that can be used in the recovery of degraded areas, as it exhibits rapid growth and has a very expansive root system, facilitating water uptake from the deeper layers of the soil. The objective of this study was to evaluate photosynthesis and enzymatic activity in S. terebinthifolius seedlings under conditions of water deficit and their potential to recover following re-irrigation. The experiment was conducted in a greenhouse under a plastic covering where plants were distributed into two groups: Group 1 -control plants, where irrigation was maintained at 70% of the water retention capacity, and Group 2 -stressed plants, where irrigation was suspended until the photosynthetic rate neared zero, followed by rehydration for 12 days, then a further suspension of irrigation. At the beginning of the experiment and during the suspension of irrigation and rehydration, plants were evaluated for gas and antioxidant enzyme exchanges. Hydric stress significantly reduced photosynthesis, stomatal transpiration conductance, carboxylation efficiency of Rubisco, and the chlorophyll content of the S. terebinthifolius plants. Following rehydration, plants recovered the carboxylation efficiency of Rubisco, but not the photosynthetic rate. Antioxidant enzyme activity increased in both the aerial part and the root in response to water deficit.Index terms: Gas exchanges; antioxidant enzyme; stress deficit. RESUMOSchinus terebinthifolius Raddi é uma espécie arbórea que pode ser utilizada em recuperação de áreas degradas, sendo uma espécie de rápido crescimento com um sistema radicular bem expansivo o que facilita captar águas nas camadas mais profundas do solo. O objetivo deste trabalho foi avaliar o metabolismo fotossintético e enzimático das mudas de S. terebinthifolius sob condições de déficit hídrico e seu potencial de recuperação após a retomada de irrigação. O experimento foi realizado em casa de vegetação sob cobertura plástica onde os vasos foram distribuídos em dois lotes sendo: 1 -Controle, onde a irrigação das plantas foi mantida a 70% da capacidade de retenção de água e o lote 2 -Estresse, onde a suspensão da irrigação foi mantida até que a taxa fotossintética apresentasse níveis próximos de zero seguida de reidratação por 12 dias e nova suspensão da irrigação. No início do experimento e na suspensão da irrigação e reidratação, as plantas foram avaliadas quanto as trocas gasosas e enzimas antioxidantes. O estresse hídrico reduz significativamente a fotossíntese, a transpiração condutância estomática, a eficiência de carboxilação da rubisco e os teores de clorofila das plantas de S. terebinthifolius. As enzimas antioxidantes aumentaram tanto na parte aérea quanto na raiz em resposta ao déficit hídrico.Termos para indexação: Trocas gasosas; enzimas antioxidantes; estresse hídrico.

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Induction of Drought Tolerance in Maize (Zea mays L.) due to Exogenous Application of Trehalose: Growth, Photosynthesis, Water Relations and Oxidative Defence Mechanism

Cited by 232 publications

References 62 publications

Water Stress Effect on Cell Wall Components of Maize (<i>Zea mays</i>) Bran

Water Stress Effect on Cell Wall Components of Maize (<i>Zea mays</i>) Bran

Influence of osmoregulators on plant tolerance to water stress

Photosynthetic and enzymatic metabolism of Schinus terebinthifolius Raddi seedlings under water deficit

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