Effects of drought on soluble protein content and protective enzyme system in cotton leaves

Li, Dongxiao; Li, Cundong; Sun, Hong; Wang, Wenxin; Liu, Liantao; Zhang, Yongjiang

doi:10.1007/s11703-010-0102-2

Cited by 48 publications

(38 citation statements)

References 9 publications

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“…Stress adaptability reveals constitutively enhanced levels of several stress-related proteins subsequently associated with soluble protein. Hence, the soluble protein and cellular protection enzymes increase under abiotic stress [21,24]. Our study exhibited a similar pattern of hike in the total soluble protein content with an increase in Al-mediated stress.…”

Section: Discussionsupporting

confidence: 74%

Antioxidant responses against aluminum metal stress in Geitlerinema amphibium

et al. 2020

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In the current scenario, aluminum is one of the major metals that cause environmental pollution and has ill impact on organism health. As around 40% of bauxite deposits of India are available in Odisha, aluminum toxicity in the soil has impacted as an intimidating problem of Odisha. This aluminum metal pollution is regarded as a primary factor for limiting crop productivity in acidic soils of tropic and subtropic countries. The presence of a high degree of aluminum metal in the soil leads to loss of beneficial microflora, i.e., nitrogen-fixing cyanobacteria that play a key role in soil fertility. Hence, this investigation was performed on a filamentous non-heterocystous cyanobacterium Geitlerinema amphibium isolated from the aluminum-polluted sites, i.e., NALCO, Ash pond, Angul to uncover the defense mechanism of the strain exhibited under such stress. The strain was treated with different doses of AlCl 3 (0-100 µM), and we observed redox imbalance leading to oxidative stress. Post-treatment of AlCl 3 , a remarkable decline in growth was evident with possible modifications in pigments associated with the phenomena. Further to combat against the stress under the redox environment, the organism activated antioxidant enzymes CAT, APX, GR, GPX, and SOD which were measured to identify the key responses involved in it. All the stress responsive enzymes were analyzed to demonstrate the interlink between the induction of stress and their detoxification through cellular response. The outcome of the work explored the multifaceted role of oxidative upset caused by AlCl 3 pollutants and the cellular antioxidative strategies deployed by G. amphibium to nullify them.

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Section: Discussionsupporting

confidence: 74%

Antioxidant responses against aluminum metal stress in Geitlerinema amphibium

et al. 2020

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“…These results are in consistent with the result of NPQ, which indicate that with the increase of drought stress, the PSII reaction center was damaged by ROS. Several studies have reported on the association between the activity of the antioxidant enzyme system and drought tolerance in plants but with variable and inconsistent results (Li et al, 2010. This variation may be caused by the activity of the antioxidant enzyme system and antioxidant concentration, among many other factors.…”

Section: Discussionmentioning

confidence: 99%

Effects of Drought Stress on Photosynthetic and Physiological Parameters of Tomato

Liang¹,

Liu²,

Zhang³

et al. 2020

J. Amer. Soc. Hort. Sci.

119

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Drought has become an important factor limiting crop yields in China. As an important greenhouse horticultural crop in China, the research of tomato (Solanum lycopersicum L. cv. Jinpeng No.10) is of great theoretical and practical significance. In the study, four different relative soil moisture contents (74% to 80%, 55% to 61%, 47% to 52%, and 25% to 30%) were used to induce drought stress. We investigated changes in photosynthetic gas exchange, chlorophyll fluorescence, and other related physiological parameters in response to different relative soil moisture contents. Drought inhibited the photosynthesis of tomato significantly, as shown by a clear decline in the net photosynthetic rate. Our results indicated stomatal limitation and nonstomatal limitation were responsible for the photosynthesis reduction.

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“…The high content of soluble protein can help maintain a relatively low y S in plant cells and further alleviate damages that result from salt stress (Du et al, 2007). Exogenous Spd treatment could help produce new induced proteins and/or accelerate the synthesis process of some original proteins and, thus, adjust y S of cells to keep a certain turgor and further to ensure the normal proceeding of a series of physiological and biochemical processes under stress conditions (Li et al, 2010b). Salt stress is also known to affect the free amino acid contents in plants (Surabhi et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Beneficial Role of Exogenous Spermidine on Nitrogen Metabolism in Tomato Seedlings Exposed to Saline-alkaline Stress

Zhang¹,

Hu²,

Shi³

et al. 2013

J. Amer. Soc. Hort. Sci.

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We studied the effects of exogenous spermidine (Spd) on plant growth and nitrogen metabolism in two cultivars of tomato (Solanum lycopersicum) that have differential sensitivity to mixed salinity-alkalinity stress: ‘Jinpeng Chaoguan’ (salt-tolerant) and ‘Zhongza No. 9’ (salt-sensitive). Seedling growth of both tomato cultivars was inhibited by salinity-alkalinity stress, but Spd treatment alleviated the growth reduction to some extent, especially in ‘Zhongza No. 9’. Exogenous Spd may help reduce stress-induced increases in free amino acids, ammonium (NH4+) contents, and NADH-dependent glutamate dehydrogenase (NADH-GDH) activities; depress stress-induced decreases in soluble protein and nitrate content; and depress nitrate reductase, nitrite reductase, glutamine synthetase (GS), NADH-dependent glutamate synthase (NADH-GOGAT), glutamate oxaloacetate transaminase (GOT), and glutamate pyruvate transaminase (GPT) activities, especially for ‘Zhongza No. 9’. Based on our results, we suggest that exogenous Spd promotes the assimilation of excess toxic NH4+ by coordinating and strengthening the synergistic action of NADH-GDH, GS/NADH-GOGAT, and transamination pathways, all during saline-alkaline stress. Subsequently, NH4+ and its related enzymes (GDH, GS, GOGAT, GOT, and GPT), in vivo, are maintained in a proper and balanced state to enable mitigation of stress-resulted damages. These results suggest that exogenous Spd treatment can relieve nitrogen metabolic disturbances caused by salinity-alkalinity stress and eventually promote plant growth.

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Effects of drought on soluble protein content and protective enzyme system in cotton leaves

Cited by 48 publications

References 9 publications

Antioxidant responses against aluminum metal stress in Geitlerinema amphibium

Antioxidant responses against aluminum metal stress in Geitlerinema amphibium

Effects of Drought Stress on Photosynthetic and Physiological Parameters of Tomato

Beneficial Role of Exogenous Spermidine on Nitrogen Metabolism in Tomato Seedlings Exposed to Saline-alkaline Stress

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