Effects of water deficit on growth and proline metabolism in Sesuvium portulacastrum

Slama, Inès; Messedi, Dorsaf; Ghnaya, Tahar; Savouré, Arnould; Abdelly, Chédly

doi:10.1016/j.envexpbot.2005.02.007

Cited by 85 publications

(50 citation statements)

References 26 publications

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“…plant water uptake decreases due to changes in soil water potential. Under such conditions, accumulation of compatible solutes like soluble sugars, proline, glycine betaine and many other such organic solutes, takes place in the plant body that plays an important role to protect the plant from the stress induced deleterious effects by osmotic adjustment, limiting water loss and diluting the concentration of toxic ions (Slama et al, 2006). The plant with the increase in soluble sugar and maintaining the osmotic potential in stress conditions, will be able to store their carbohydrate metabolism of the cell is kept at an optimum level (Gibson, 2005).…”

Section: Soluble Sugarsmentioning

confidence: 99%

Effect of Zinc and Bio Fertilizers on Antioxidant Enzymes Activity, Chlorophyll Content, Soluble Sugars and Proline in Triticale Under Salinity Condition

Arough

Sharifi

Sedghi

et al. 2016

Not Bot Horti Agrobo

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In order to study the effects of bio fertilizers and zinc fertilizer on antioxidant enzymes activity, chlorophyll content, soluble sugars and proline in triticale under salinity condition, a factorial experiment was conducted based on randomized complete block design with three replications under greenhouse condition. Experiment factors were included salinity in four levels [no-salt (control or S 0 ), salinity 20 (S 1 ), 40 (S 2 ) and 60 (S 3 ) mM NaCl) equivalent of 1.85, 3.7 and 5.55 dS m −1 respectively], four bio fertilizers levels (no bio fertilizer (F 0 ), application of mycorrhiza (F 1 ), PGPR (F 2 ), both application PGPR and mycorrhiza (F 3 ) and three nano zinc oxide levels (without nano zinc oxide as control (Zn 0 ), application of 0.4 (Zn 1 ) and 0.8 (Zn 2 ) g lit -1 ). Results showed that salinity severe stress (60 mM) decreased chlorophyll a, chlorophyll b, total chlorophyll, carotenoid and grain yield of triticale, whereas soluble sugars and proline content, the activities of Catalase (CAT), Peroxidase (POD) Polyphenol Oxidase (PPO) enzymes increased. Results showed that both application of bio fertilizer and 0.8 g lit -1 nano zinc oxide (F 3 Zn 2 ) increased about 39% from grain yield in comparison with F 0 Zn 0 under the highest salinity level. Based on the results, it was concluded that bio fertilizers and nano zinc oxide application can be recommended for profitable triticale production under salinity condition.

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Section: Soluble Sugarsmentioning

confidence: 99%

Effect of Zinc and Bio Fertilizers on Antioxidant Enzymes Activity, Chlorophyll Content, Soluble Sugars and Proline in Triticale Under Salinity Condition

Arough

Sharifi

Sedghi

et al. 2016

Not Bot Horti Agrobo

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“…Proline accumulation in stress conditions was not only dependent on the type of stressor but also the plant species. In addition, the ornithine-δ-aminotransferase (δ-OAT), glutamate dehydrogenase (GDH), and proline-5-carboxylase reductase (P5CR) in the proline biosynthesis pathway in drought-stressed mulberry (Chaitanya et al, 2009) and Sesuvium portulacastrum (Slama et al, 2006) have been investigated. In this study, REL in oil palm seedlings was increased under PEG-and mannitol-induced osmotic stress, as was proline accumulation.…”

Section: Growth Performancementioning

confidence: 99%

Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Cha–um

Takabe

Kirdmanee

2012

Plant Production Science

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“…Though these organic compounds are species-specific their role is not clearly defined, but it is generally accepted that they contribute to ameliorating stress in plants. [2][3][4] Most stress-related organic compounds are secondary plant metabolites, and tea (Camellia sinensis) contains large amounts of polyphenols, mainly catechins, that belong to the flavan-3-ol class. Flavonoids play a key role in quality determination in black tea, 5) and in fruits, 6) but their role as indicators of desiccation tolerance in tea has not been explored.…”

mentioning

confidence: 99%

Shoot Epicatechin and Epigallocatechin Contents Respond to Water Stress in Tea [Camellia sinensis(L.) O. Kuntze]

Cheruiyot

Mumera

Ng’etich³

et al. 2008

Bioscience, Biotechnology, and Biochemistry

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An experiment was conducted to determine the association of tea catechins to water stress in tea, with the objective of determining their suitability as indicators for predicting drought tolerance in tea (Camellia sinensis). The study consisted of six tea clones (BBK 35, TRFK 6/8, TRFK 76/1, TRFK 395/2, TRFK 31/30, and TRFK 311/287) and four levels of soil water content (38, 30, 22, and 14% v/v), which were arranged in a complete randomized design and replicated 3 times. The treatments were maintained for a period of 12 weeks. Tea shoots were sampled for catechin analysis during the 6th week of water treatment, in which fresh shoots with two leaves and a bud were plucked and steamed for 2 min, and dried at 70 C to constant weight. Subsequently, the samples were ground and analyzed for catechins using an HPLC system. The total catechins showed significant correlation with shoot growth (r ¼ 0:65, P ¼ 0:006), soil water content (r ¼ 0:54, P ¼ 0:0066), and water stress index (r ¼ 0:67, P ¼ 0:0004). The epicatechin (EC) correlated with shoot growth (r ¼ 0:58, P ¼ 0:0032), soil water content (r ¼ 0:62, P ¼ 0:0014), and water stress index (r ¼ 0:63, P ¼ 0:0010). Similarly, epigallocatechin (EGC) correlated with shoot growth (r ¼ 0:65, P ¼ 0:0006), soil water content (r ¼ 0:50, P ¼ 0:0133), and water stress index (r ¼ 0:60, P ¼ 0:0021). However, epigallocatechin gallate (EGCg) and epicatechin gallate (ECG) showed no significant response to changes in soil water content. The shoot contents of EC and EGC in the six clones showed varied responses, with a distinct pattern in the water-stress tolerant clones (TRFK 6/8 and TRFK 31/30). The results suggest a potential use for EC and EGC as indicators in predicting drought tolerance in tea.Key words: catechins; drought stress; flavan-3-ol; free radicals Plants are known to accumulate organic osmolytes such as proline, glycine betaine, non-reducing sugars, and polyols 1,2) in response to stress factors. Though these organic compounds are species-specific their role is not clearly defined, but it is generally accepted that they contribute to ameliorating stress in plants. [2][3][4] Most stress-related organic compounds are secondary plant metabolites, and tea (Camellia sinensis) contains large amounts of polyphenols, mainly catechins, that belong to the flavan-3-ol class. Flavonoids play a key role in quality determination in black tea, 5) and in fruits, 6) but their role as indicators of desiccation tolerance in tea has not been explored. The precursors of most flavonoids are malonyl-CoA, derived from carbohydrate metabolism and p-coumaroyl-CoA, from the phenylpropanoid pathway. 7-9) Phenylpropanoids, which include flavonoids, isoflavonoids, and stilbenes, are derived from deamination of phenylalanine by phenylalanine ammonialyase (PAL). Flavonoid biosynthesis is dependent on structural and regulatory genes; structural genes encode enzymes catalyzing the biosynthesis, while regulatory genes control the expression of the genes. 8,[10][11][12][13][14] This implies that the availab...

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Effects of water deficit on growth and proline metabolism in Sesuvium portulacastrum

Cited by 85 publications

References 26 publications

Effect of Zinc and Bio Fertilizers on Antioxidant Enzymes Activity, Chlorophyll Content, Soluble Sugars and Proline in Triticale Under Salinity Condition

Effect of Zinc and Bio Fertilizers on Antioxidant Enzymes Activity, Chlorophyll Content, Soluble Sugars and Proline in Triticale Under Salinity Condition

Physio-Biochemical Responses of Oil Palm (Elaeis guineensisJacq.) Seedlings to Mannitol- and Polyethylene Glycol-Induced Iso-Osmotic Stresses

Shoot Epicatechin and Epigallocatechin Contents Respond to Water Stress in Tea [Camellia sinensis(L.) O. Kuntze]

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