Comparison of growth of flacca and wild-type tomato grown under conditions diminishing their differences in stomatal control

Chen, G.; Shi, Qinghua; Lips, S. H.; Sagi, Moshe

doi:10.1016/s0168-9452(03)00060-8

Cited by 16 publications

(16 citation statements)

References 26 publications

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“…The stimulatory effects of ABA on shoot growth might be the result of a combination of improved cell extensibility and stimulated cell division attributable to arrest at the G1 phase of the cell cycle since cell development in the G1 phase is closely linked to shoot growth (Finkelstein et al 2002). The inhibited root length may be because ABA produces more ethylene (Chen et al 2003). Exogenous ABA increased the formation of lateral roots.…”

Section: Discussionmentioning

confidence: 99%

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Effect of exogenous abscisic acid on the level of antioxidants in Atractylodes macrocephala Koidz under lead stress

Wang

Chen

Pan

2012

Environ Sci Pollut Res

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This study hypothesized that the positive or negative effects of exogenous abscisic acid (ABA) on oxidative stress caused by lead were dose dependent. The effects of different levels of ABA (2.5, 5, and 10 mg L −1 ) on lead toxicity in the leaves of Atractylodes macrocephala were studied by investigating plant growth, soluble sugars, proteins, lipid peroxidation, and antioxidative enzymes. Excess Pb inhibited root dry weight, root length, and the number of lateral roots, but increased shoot growth. In addition, lead stress significantly decreased the levels of chlorophyll pigments, protein, and activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and peroxidase (POD). Different levels of ABA significantly increased SOD, CAT, POD, and APX activities, but decreased the level of hydrogen peroxide and malondialdehyde in nonstressed plants. Exogenous application of 2.5 mg L −1 ABA detoxified the stress-generated damages caused by Pb and also enhanced plant growth, soluble sugars, proteins, and all four antioxidant enzyme activities but reduced Pb uptake of lead-stressed plant compared to lead treatment alone. However, the toxic effects of Pb were further increased by the applications of 5 and 10 mg L −1 ABA. The levels of antioxidants caused by a low concentration of exogenous ABA might be responsible for minimizing the Pb-induced toxicity in A. macrocephala.

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Section: Discussionmentioning

confidence: 99%

“…In China, Pb content in the A-horizon of natural soils varies from 0.68 to 1,143 mg kg −1 (Chen 2004). Thus, there is an urgent need to study the mechanism of Pb tolerance of A. macrocephala plants.…”

Section: Introductionmentioning

confidence: 99%

Effect of exogenous abscisic acid on the level of antioxidants in Atractylodes macrocephala Koidz under lead stress

Wang

Chen

Pan

2012

Environ Sci Pollut Res

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“…Abscisic acid (ABA) also plays important roles in stomatal regulation (Gibson et al 1991;Chen et al 2003;Sirichandra et al 2009), gene expression (Alamillo and Bartels 2001;Wheeler et al 2009), and metabolic changes (Agarwal et al 2005). ABA can enhance stress tolerance (Seki et al 2007;Parent et al 2009) either as a result of its endogenous concentration (Nagel et al 1994;Wang et al 2007) or through exogenous application (Trouverie et al 2003;Haisel et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Physiological responses of kiwifruit plants to exogenous ABA under drought conditions

Wang

et al. 2010

Plant Growth Regul

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We studied the physiological responses to abscisic acid (ABA) when 2-year-old potted plants of kiwifruit (Actinidia deliciosa) were grown under moisture stress. Leaves treated with 60 lM exogenous ABA through various means had less severe damage when water was limiting, and sprayed plants showed relatively greater drought resistance. This indicates that ABA improves tolerance in kiwifruit, reducing membrane permeability and enhancing the activities of antioxidant enzymes, e.g., peroxidase (POD), catalase (CAT), superoxide dismutase (SOD), ascorbate peroxidase (APX), and glutathione reductase (GR). Exposure to ABA led to higher levels of antioxidants, such as ABA and glutathione (GSH), while altering the amounts of endogenous hormones-ABA, indole-3-acetic acid (IAA), and Gibberellin (GA)-and organic oxalate, malate, and citrate in the leaves. Although daily applications of ABA were more effective than a single spray event, the effect of treatment, i.e., avoiding tissue damage and increasing plant resistance, was more apparent on Day 4 than on Day 6. No difference in response was apparent between control plants (regular irrigation) and those sprayed with ABA on Day 4 of the drought period.

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“…These metabolites accumulate under drought-stress and function as osmolytes, antioxidants or scavengers that help plants to avoid and/or tolerate stresses. There is accumulating evidence that abscisic acid (ABA) plays important roles in stomatal regulation (Chen et al 2003;Gibson et al 1991), gene expression (Alamillo and Bartels 2001;Shinozaki and Yamaguchi-shinozaki 2000) and metabolic changes (Agarwal et al 2005). Many studies have shown that ABA can enhance tolerance of plants to multiple environmental stresses (Seki et al 2007) from measurement of the endogenous ABA concentrations (Nagel et al 1994;Wang et al 2007) and from the use of exogenous ABA applied to plants (Haisel et al 2006;Trouverie et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Morphological and physiological responses of two contrasting Malus species to exogenous abscisic acid application

et al. 2008

Plant Growth Regul

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This study characterized morphological and physiological responses of two Malus species to exogenous abscisic acid (ABA) application under both well-watered and drought-stressed conditions. Exogenous ABA was sprayed onto the leaves of potted 1-year-old seedlings of M. sieversii and M. hupehensis, originated from regions with low annual rainfall and high annual rainfall, respectively. The results demonstrated that exogenous ABA application significantly decreased height growth (H), total biomass (TB), total leaf area (LA), net photosynthesis (A) and stomatal conductance (g s ), and significantly increased root/shoot ratio (RS), specific leaf area (SLA), endogenous ABA concentration, water use efficiency (WUE) and carbon isotope composition (d 13 C) under both well-watered and drought-stressed conditions. However, distinct interspecific differences were found in ABA-induced morphological and physiological responses. Compared with M. hupehensis, M. sieversii was more responsive to exogenous ABA application, resulting in larger decreases in H, LA, A and g s , and larger increases in RS, SLA, WUE L , WUE i , ABA and d 13 C. These results suggest strong evidence for different maintenance of fitness under stressful conditions between species of Malus. In addition, application of exogenous ABA appears to enhance the tolerance of two Malus species to drought-stress.

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Comparison of growth of flacca and wild-type tomato grown under conditions diminishing their differences in stomatal control

Cited by 16 publications

References 26 publications

Effect of exogenous abscisic acid on the level of antioxidants in Atractylodes macrocephala Koidz under lead stress

Effect of exogenous abscisic acid on the level of antioxidants in Atractylodes macrocephala Koidz under lead stress

Physiological responses of kiwifruit plants to exogenous ABA under drought conditions

Morphological and physiological responses of two contrasting Malus species to exogenous abscisic acid application

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