RETRACTED: Water deficit induced oxidative damage in tea (Camellia sinensis) plants

Jeyaramraja, Pavanasam Rajamanickam; Meenakshi, S.; Kumar, Rajender; Joshi, S.; Ramasubramanian, Balakrishan

doi:10.1016/j.jplph.2004.09.004

Cited by 23 publications

(16 citation statements)

References 19 publications

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“…Chl a was degraded more than Chl b under deficit. These results are in agreement with earlier reports (Alberte et al 1977, Jeyaramraja et al 2005. Such water deficit induced reduction in Chl content has been ascribed to loss of chloroplast membranes, excessive swelling, distortion of the lamellae vesiculation, and the appearance of lipid droplets (Kaiser et al 1981).…”

supporting

confidence: 93%

Effect of water deficit on photosynthetic and other physiological responses in grapevine (Vitis vinifera L. cv. Riesling) plants

Bertamini¹,

Zulini²,

Muthuchelian³

et al. 2006

Photosynt.

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The grapevine (Vitis vinifera L. cv. Riesling) plants subjected to water deficit were studied for changes in relative water content (RWC), leaf dry mass, contents of chlorophyll (Chl), total leaf proteins, free amino acids, and proline, and activities of ribulose-1,5-bisphosphate carboxylase (RuBPC), nitrate reductase (NR), and protease. In water-stressed plants RWC, leaf dry matter, Chl content, net photosynthetic rate (P N ), and RuBPC and NR activities were significantly decreased. The total leaf protein content also declined with increase in the accumulation of free amino acids. Concurrently, the protease activity in the tissues was also increased. A significant two-fold increase in proline content was recorded.Additional key words: amino acids; chlorophyll; net photosynthetic rate; nitrate reductase; proline; protease; relative water content; ribulose-1,5-bisphosphate carboxylase.---Water stress has a multifaceted effect on plant growth and metabolism (Hsiao 1973). Under stress, leaves close their stomata, and this is generally believed to be the cause of reduced carbon gain under periods of drought (Kaiser et al. 1981). Water stress affects not only the carbon metabolism but also nitrogen metabolism. During water stress nitrate reductase (NR) activity is lost more rapidly than most enzymes (Huffaker et al. 1970). The other enzymes of the pathway of nitrate assimilation, nitrite reductase and glutamine synthetase (Taylor et al. 1982), are relatively unaffected. Huffaker et al. (1970) suggested that a rapid loss of NR activity could be part of a biochemical adaptation to water deficit; shutting off the nitrate assimilation pathway at the first step would reduce energy requirements during periods of stress and prevent accumulation of nitrite and ammonium.Water stress is the most important factor limiting grapevine growth in the Mediterranean area (Gomez del Campo et al. 2000, Flexas et al. 2002. Previous studies on the photosynthetic response to drought under field conditions showed that stomatal closure is an early response, which is almost matched by decreases in CO 2 assimilation. This response becomes progressively greater through summer, as soil water availability decreases and also non-stomatal effects appear (Escalona et al. 1997). The purpose of the present study was the investigation of the effects of water deficit on physiological responses in grapevine.One-year-old grapevine (Vitis vinifera L. cv. Riesling) plants were grown in 20 000-cm 3 pots containing soil : sand : peat : vermiculite (3 : 1 : 3 : 3) in glasshouse [26/30-16/20 o C day/night temperature, photosynthetic photon flux density (PPFD) of 1 200-1 500 µmol m -2 s -1 , 14/10 h light/dark cycle, and relative humidity between 65 and 70 %], and then divided into two uniform groups of ten pots each. The first group (control) continued to receive daily irrigation in order to maintain the soil water at the field capacity while in the second group (water deficit) irrigation was stopped. Measurements were made 10 d after the irrigation was stopped...

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supporting

confidence: 93%

Effect of water deficit on photosynthetic and other physiological responses in grapevine (Vitis vinifera L. cv. Riesling) plants

Bertamini¹,

Zulini²,

Muthuchelian³

et al. 2006

Photosynt.

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“…that might be abundant in wheat species. Drought stress-induced decrease in chlorophyll contents has been reported in several plants (Alberte et al 1977;Singh and Usha 2003;Jeyaramraja et al 2005). In a typical case, the reduction in chlorophyll contents due to osmotic stress has been ascribed to the strong damage and loss of chloroplast membranes (Kaiser et al 1981).…”

Section: Impacts Of Drought Stress On Growth and Physiological Paramementioning

confidence: 98%

Changes in the water status and osmotic solute contents in response to drought and salicylic acid treatments in four different cultivars of wheat (Triticum aestivum)

et al. 2011

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Salicylic acid (SA) controls growth and stress responses in plants. It also induces drought tolerance in plants. In this paper, four wheat (Triticum aestivum L.) cultivars with different drought responses were treated with SA in three levels of drain (90, 60, 30% of maximum field capacity) to examine its interactive effects on drought responses and contents of osmotic solutes that may be involved in growth and osmotic adjustment. Under drought condition, the cultivars Geza 164 and Sakha 69 had the plant biomass and leaf relative water content (LRWC) greater than the cultivars Gemaza 1 and Gemaza 3. In all cultivars, drought stress decreased the biomass, LRWC, and the contents of inorganic solutes (Ca, K, Mg) and largely increased the contents of organic solutes (soluble sugars and proline). By contrast, SA increased the biomass, LRWC and the inorganic and organic solute contents, except proline. Correlation analysis revealed that the LRWC correlated positively with the inorganic solute contents but negatively with proline in all cultivars. SA caused maximum accumulations of soluble sugars in roots under drought. These results indicated that SA-enhanced tolerance might involve solute accumulations but independently of proline biosynthesis. Drought-sensitive cultivars had a trait lowering Ca and K levels especially in shoots. Possible functions of the ions and different traits of cultivars were discussed.

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“…Growth and productivity of tea plants largely depends on their capacity to adapt to abiotic stress, namely temperature, drought, metal, and nutritional disturbances. Although the effects of some individual environmental factors on the tea plant are well documented (Handique and Manivel, 1990;Chakraborty et al, 2002;Panda et al, 2003;Upadhyaya and Panda, 2004a;Jeyaramraja et al, 2005;Sharma and Kumar, 2005;Cheruiyot et al, 2007;Cheruiyot et al, 2008;Upadhyaya et al, 2008;Yadavand Mohanpuria, 2009;Upadhyaya et al, 2011;Upadhyaya et al, 2012;Das et al, 2012;Gupta et al, 2012), the effects of interacting abiotic factors remain poorly investigated.Therefore, the objective of this review is to highlight the effects of drought, heavy metal stress, and their interaction on growth, water relationships, nutrient status, and antioxidative responses during abiotic stress and its recovery in the tea plant.…”

Section: Introductionmentioning

confidence: 99%

“…), and synthesis of protein. Drought stress caused decreased mineral uptake (Fig.3), stomatal conductance, and photosynthetic rate (Jeyaramraja et al, 2005) and ultimately reduced the growth rate of tea plants. There are reports of various physiological and biochemical responses of various tea clones to drought ( Fig.1.…”

Section: Introductionmentioning

confidence: 99%

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ABIOTIC STRESS RESPONSES IN TEA [<i>Camellia sinensis</i> L (O) Kuntze]: AN OVERVIEW

Upadhyaya

Panda

2013

RAS

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RETRACTED: Water deficit induced oxidative damage in tea (Camellia sinensis) plants

Cited by 23 publications

References 19 publications

Effect of water deficit on photosynthetic and other physiological responses in grapevine (Vitis vinifera L. cv. Riesling) plants

Effect of water deficit on photosynthetic and other physiological responses in grapevine (Vitis vinifera L. cv. Riesling) plants

Changes in the water status and osmotic solute contents in response to drought and salicylic acid treatments in four different cultivars of wheat (Triticum aestivum)

ABIOTIC STRESS RESPONSES IN TEA [<i>Camellia sinensis</i> L (O) Kuntze]: AN OVERVIEW

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