Brassinosteroids alleviate high-temperature injury in Ficus concinna seedlings via maintaining higher antioxidant defence and glyoxalase systems

Jin, Shaowei; Li, Xue Qin; Wang, G. Geoff; Zhu, Xiang Tao

doi:10.1093/aobpla/plv009

Cited by 65 publications

(26 citation statements)

References 63 publications

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“…β-aminobutyric acid treatment increased the Gly I and Gly II levels in salt treated rapeseed plants, which induces MG detoxification. However, the glyoxylase system composed of Gly I and Gly II regulates the enhanced production of MG under various environmental stresses including salinity [55,56], drought [20,57,58], toxic metals [59,60] and heat exposure [61,62]. Previously, Reddy and Sopory [63] observed that overexpression of the Gly I gene decreased the endogenous MG and enhanced the tolerance against MG and salt stress.…”

Section: Discussionmentioning

confidence: 99%

β-Aminobutyric Acid Pretreatment Confers Salt Stress Tolerance in Brassica napus L. by Modulating Reactive Oxygen Species Metabolism and Methylglyoxal Detoxification

Mahmud

Hasanuzzaman

Khan

et al. 2020

Plants

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Salinity is a serious environmental hazard which limits world agricultural production by adversely affecting plant physiology and biochemistry. Hence, increased tolerance against salt stress is very important. In this study, we explored the function of β-aminobutyric acid (BABA) in enhancing salt stress tolerance in rapeseed (Brassica napus L.). After pretreatment with BABA, seedlings were exposed to NaCl (100 and 150 mM) for 2 days. Salt stress increased Na content and decreased K content in shoot and root. It disrupted the antioxidant defense system by producing reactive oxygen species (ROS; H2O2 and O2•−), methylglyoxal (MG) content and causing oxidative stress. It also reduced the growth and photosynthetic pigments of seedlings but increased proline (Pro) content. However, BABA pretreatment in salt-stressed seedlings increased ascorbate (AsA) and glutathione (GSH) contents; GSH/GSSG ratio; and the activities of ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), glutathione reductase (GR), glutathione peroxidase (GPX), superoxide dismutase (SOD), catalase (CAT), glyoxalase I (Gly I), and glyoxalase II (Gly II) as well as the growth and photosynthetic pigments of plants. In addition, compared to salt stress alone, BABA increased Pro content, reduced the H2O2, MDA and MG contents, and decreased Na content in root and increased K content in shoot and root of rapeseed seedlings. Our findings suggest that BABA plays a double role in rapeseed seedlings by reducing Na uptake and enhancing stress tolerance through upregulating the antioxidant defense and glyoxalase systems.

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Section: Discussionmentioning

confidence: 99%

β-Aminobutyric Acid Pretreatment Confers Salt Stress Tolerance in Brassica napus L. by Modulating Reactive Oxygen Species Metabolism and Methylglyoxal Detoxification

Mahmud

Hasanuzzaman

Khan

et al. 2020

Plants

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“…In this case, 24-epibrassinolide (1 mg dm -3 ) pre-treatment further enhanced SOD, POD, CAT and APX activities. 24-Epibrassinolide also alleviated the high temperature-induced oxidative stress by increasing the enzymatic and non-enzymatic antioxidant and glyoxalase systems in seedlings of Ficus concinna (Jin et al 2015). On the other hand, no effect of 24-epibrassinolide (1 μM) on the activity of antioxidative enzymes was observed in heat-exposed tomatoes (Mazorra et al 2011), which suggests that the effect of BRs may be species or cultivar dependent.…”

Section: Mobilization Of Cellular Antioxidant Systemmentioning

confidence: 93%

Physiological and molecular mechanisms of brassinosteroid-induced tolerance to high and low temperature in plants

Sadura

Janeczko

2018

Biol Plant

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Brassinosteroids (BRs) are plant hormones that were isolated for the first time in the 1970s. This group currently includes more than 70 compounds that differ in their structure and physiological activity. BRs are present in plants in a free form or in the form of conjugates. BRs are known as plant growth regulators, but they also play a role in the plant response to environmental stresses. In the case of plants that are exposed to low/high temperature, exogenous BRs can counteract growth inhibition and reduce biomass losses as well as increase plant survival. BRs show a multidirectional activity in regulating the metabolism of plants exposed to extreme temperatures. The following BRs actions can be distinguished: changes in membrane physicochemical properties, regulation of the expression of selected genes (including stress-responsive genes), as well as indirect effects on metabolism through other hormones or signalling molecules (such as hydrogen peroxide). This review summarizes the current knowledge about the effects of BRs on the physiological and biochemical processes that occur in plants during exposure to low or high temperatures.

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“…The BR-induced pulse of H 2 O 2 production via NADPH oxidase results in enhanced ABA biosynthesis, which results in further escalation of H 2 O 2 levels leading to prolonged stress tolerance ( Zhou et al, 2014 ). There are many reports showing BR-induced stress tolerance by regulating the activity and expression of antioxidant enzymes ( Cui et al, 2015 ; Jin et al, 2015 ; Sharma et al, 2015 ). This is further supported by the fact that reduced BR biosynthetic mutant plants have reduced ratios of glutathione/glutathione disulfide (GSH/GSSG) and ascorbic acid/dehydroascorbic acid (AsA/DHA), while BR treatment enhances the activity of antioxidant enzymes, expression of various defense-related genes and the GSH/GSSG and AsA/DHA ratios ( Sharma et al, 2012 , 2013a , c ; Zhou et al, 2014 ).…”

Section: Role Of Brs At Physiological and Biochemical Levelmentioning

confidence: 99%

Brassinosteroids: A Promising Option in Deciphering Remedial Strategies for Abiotic Stress Tolerance in Rice

2017

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Rice is an important staple crop as it feeds about a half of the earth’s population. It is known to be sensitive to a range of abiotic stresses which result in significant decline in crop productivity. Recently, the use of phytohormones for abiotic stress amelioration has generated considerable interest. Plants adapt to various environmental stresses by undergoing series of changes at physiological and molecular levels which are cooperatively modulated by various phytohormones. Brassinosteroids (BRs) are a class of naturally occurring steroidal phytohormones, best known for their role in plant growth and development. For the past two decades, greater emphasis on studies related to BRs biosynthesis, distribution and signaling has resulted in better understanding of BRs function. Recent advances in the use of contemporary genetic, biochemical and proteomic tools, with a vast array of accessible biological resources has led to an extensive exploration of the key regulatory components in BR signaling networks, thus making it one of the most well-studied hormonal pathways in plants. The present review highlights the advancements of knowledge in BR research and links it with its growing potential in abiotic stress management for important crop like rice.

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Brassinosteroids alleviate high-temperature injury in Ficus concinna seedlings via maintaining higher antioxidant defence and glyoxalase systems

Cited by 65 publications

References 63 publications

β-Aminobutyric Acid Pretreatment Confers Salt Stress Tolerance in Brassica napus L. by Modulating Reactive Oxygen Species Metabolism and Methylglyoxal Detoxification

β-Aminobutyric Acid Pretreatment Confers Salt Stress Tolerance in Brassica napus L. by Modulating Reactive Oxygen Species Metabolism and Methylglyoxal Detoxification

Physiological and molecular mechanisms of brassinosteroid-induced tolerance to high and low temperature in plants

Brassinosteroids: A Promising Option in Deciphering Remedial Strategies for Abiotic Stress Tolerance in Rice

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