Growth, biochemical modifications and proline metabolism in Helianthus annuus L. as induced by drought stress

Manivannan, P.; Jaleel, Cheruth Abdul; Sankar, B.; Kishorekumar, A.; Somasundaram, R.; Lakshmanan, Ganapathy Murugan Alagu; Panneerselvam, R.

doi:10.1016/j.colsurfb.2007.05.002

Cited by 301 publications

(186 citation statements)

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“…Accumulation of amino acids may be due to the hydrolysis of protein and may occur in response to the change in osmotic adjustment of cellular contents (GREENWAY and MUNNS, 1980), an important mechanism that alleviates some of the detrimental effects of water-deficit stress (MORGAN, 1984). Accumulation of free amino acids under water deficit stress indicates the possibility of their involvement in osmotic adjustment, as reported earlier (YADAV et al, 2005;MANIVANNAN et al, 2007;ANJUM et al, 2008). The content of proline, a protective solute in teak leaves increased due to drought treatment in both the clones studied.…”

Section: Discussionmentioning

confidence: 64%

“…Proline is an amino acid and known to act as an osmolyte, protecting the plasma membrane integrity (MANSOUR, 1998), as a sink of energy or reducing power (VERBRUGGEN et al, 1996), as a scavenger of ROS and their derivatives (HONG et al, 2000;BASHIR et al, 2007) and as a source for carbon and nitrogen (PENG et al, 1996), and thereby helping the plants to tolerate stress effects (MANIVANNAN et al, 2007). In the present teak clonal materials proline accumulation thus appears to be related to mechanisms associated with tolerance to desiccation (MANIVANNAN et al, 2007). Drought treatment also enhanced the accumulation of other compatible solute such as total soluble sugars in both clones.…”

Section: Discussionmentioning

confidence: 99%

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Growth Characteristics, Physiological and Metabolic Responses of Teak (Tectona Grandis Linn. f.) Clones Differing in Rejuvenation Capacity Subjected to Drought Stress

Husen

2010

Silvae Genetica

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Summary Four-year old clones (FG1 and FG11) of teak (Tectona grandis Linn. f.), differing in rejuvenation capacity were grown in glazed earthenware pots. Drought treatments were imposed by withholding water for 20 days and rewatered to the field capacity daily for 5 days and the possible role of biochemical alteration and antioxidant metabolism in conferring photosynthetic capacity was determine by measuring photosynthetic traits, cellular damage and assaying activities of the superoxide dismutase (SOD) and peroxidase (PER) enzymes. Growth, relative water content (RWC), net photosynthetic rate (Pn), stomatal conductance (gs), chlorophyll fluorescence (Fv/Fm) and chlorophyll a, b, total chlorophyll and soluble protein content decreased significantly with increasing drought treatments from 5 to 20 days. Droughtinduced stress significantly increased the carotenoids content, relative electrolyte leakage and malondialdehyde (MDA) content, and, at the same time, accumulated free proline, free amino acid and soluble sugars in both clones. After re-watered to the field capacity daily for 5 days, both clones were shown significant recovery in the studied parameters. As compared with the FG11, the FG1 clone was more tolerant to drought as indicated by higher level of antioxidant enzyme activities as well as lower MDA content and electrolyte leakage. Similarly, drought stress caused less pronounced inhibition of Pn in FG1 than in FG11 clone. After re-hydration, the recovery was relatively quicker in FG1 than in FG11 clone. FG1 clone showed significant recovery in maximum quantum yield or photochemical efficiency of PSII (Fv/Fm) after 5 days of re-watering. The FG11 compared to the FG1, the former clone was less tolerant to drought than the latter. These results demonstrated that the different physiological strategies including antioxidative enzymes employed by the FG1 and FG11 clones of T. grandis to protect photosynthetic apparatus and alleviate drought stress. Furthermore, this study also provides ideas for teak improvement programmes and may be useful in breeding or genetic engineering for their tolerance to drought stress.

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Section: Discussionmentioning

confidence: 64%

Section: Discussionmentioning

confidence: 99%

Growth Characteristics, Physiological and Metabolic Responses of Teak (Tectona Grandis Linn. f.) Clones Differing in Rejuvenation Capacity Subjected to Drought Stress

Husen

2010

Silvae Genetica

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“…Bonanza. Possible cause for reduction in plant height of Abelmoschus esculentus under water stress conditions might be linked with the reduction in cell expansion as well as leaves senescence (Manivannan et al, 2007). Likewise, water stress effect decreased stem size in Albizzia seedlings (Nautiyal et al, 2002;Sundaravalli et al, 2005).…”

Section: Resultsmentioning

confidence: 99%

“…Under water stress, the lower amount of total chlorophyll suggests a dropped capacity for light harvesting thus effecting photosynthesis (Herbinger et al, 2002). In sunflower varieties, drought stress caused the reduction in the chlorophyll a, b and total chlorophyll content (Manivannan et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Screening of marigold (Tagetes erecta L.) cultivars for drought stress based on vegetative and physiological characteristics

Younis

Riaz

Qasim

et al. 2018

IJFAAS

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Drought tolerance is an important genotypic character to be exploited for the plant cultivar selection under water deficit conditions. In the recent study, we examined the response of two marigold cultivars (Inca and Bonanza) under different regimes of drought stress. The aim was to determine the best performing cultivar under water/drought stress. Three irrigation treatments include; 4 days (T 1 ), 6 days (T 2 ) and 8 days (T 3 ) in comparison to control 1 day (T 0 ) interval were imposed. Response characters under study were morphological, physiological and anatomical. Complete Randomized Design (CRD) with four replications in two factorial arrangements was followed for experiment layout. The results revealed that increasing water stress adversely affect plant height, in both cultivars. Both cultivars showed a decreasing trend to the number of flowers under water stress. Total chlorophyll contents including a, b were also showed reduction under prolonged drought treatment in both cultivars from (2.7 mg g -1 FW) to (1 mg g -1 FW). Overall, the performance of cultivar (cv.) Inca was satisfactory under water stress regimes. These results are helpful for selecting drought tolerant marigold cultivars in water scarce areas.

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“…Chemical treatment and agronomical crop management practices have been tried to alleviate the water deficit effects, but the application of CaCl 2 to stressed plants have attracted little attention (Jaleel et al, 2007). One possible approach to reduce the effect of water deficit on plant productivity is through the addition of calcium supplements to irrigation water (Manivannan et al, 2007). Supplementing the medium with Ca 2+ alleviates growth inhibition by salt in glycophyte plants (Yan et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

Response of Caper Plant to Drought and Different Ratios of Calcium and Sodium Chloride1

2016

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-Caper (Capparis spinosa) is used as multipurpose and adaptable plant which provides a valuable opportunity to enhance greenery in harsh climatic areas. This plant like the others is affected by drought and sodium chloride stresses as the most common abiotic stresses worldwide. This study was carried out to determine the interaction between drought and different ratios of sodium and calcium chloride on caper. Droughts stress were two levels of 100 and 75% of field capacity and were applied based on the daily weighting method of pots. Salt treatments were four different ratios of calcium chloride: sodium chloride (1:0, 1:1, 1:3, 1:5]. Treatments started when the plants were sown in the pots. Results indicated that higher ratios of calcium chloride than sodium chloride which caused salinity stress have destructive effect on water relationships and contents of the caper. This stress affected growth, morphological, and physiological function related traits in a negative way. Growth and other traits decreased under water deficit conditions. It seems that interaction between salinity and drought had the most destructive effect on this plant and decreasing its quality and quantity of its traits.Keywords: salt stress, chlorophyll index, water content. Palavras-chave: estresse salino, índice de clorofila, teor de água. RESUMO -A alcaparra (Capparis

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Growth, biochemical modifications and proline metabolism in Helianthus annuus L. as induced by drought stress

Cited by 301 publications

References 31 publications

Growth Characteristics, Physiological and Metabolic Responses of Teak (Tectona Grandis Linn. f.) Clones Differing in Rejuvenation Capacity Subjected to Drought Stress

Growth Characteristics, Physiological and Metabolic Responses of Teak (Tectona Grandis Linn. f.) Clones Differing in Rejuvenation Capacity Subjected to Drought Stress

Screening of marigold (Tagetes erecta L.) cultivars for drought stress based on vegetative and physiological characteristics

Response of Caper Plant to Drought and Different Ratios of Calcium and Sodium Chloride1

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