High temperature and drought stress cause abscisic acid and reactive oxygen species accumulation and suppress seed germination growth in rice

Liu, Juan; Hasanuzzaman, Mirza; Wen, Huili; Zhang, Jing; Peng, Ting; Sun, Huwei; Zhao, Quanzhi

doi:10.1007/s00709-019-01354-6

Cited by 142 publications

(86 citation statements)

References 71 publications

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“…The damage caused by drought stress to seed germination is mainly due to decrease in water intake and reduced energy supply to seeds, inducing a series of changes in metabolism, including ROS accumulation, antioxidant defense system, hormone signal transduction, and the production of osmotic regulatory substances (Hussain, Farooq & Lee, 2017;Shu et al, 2018;Sharma & Zheng, 2019). Numerous studies have demonstrated that drought stress significantly inhibits seed germination in various plant species (Liu et al, 2018;Lou et al, 2017;Liu et al, 2016a;Liu et al, 2016b;Liu et al, 2019). Our experiments showed complementary evidence that the germination rate of cotton seeds was inhibited by the application of 10% PEG-6000 ( Fig.…”

Section: Discussionmentioning

confidence: 99%

Melatonin improves the germination rate of cotton seeds under drought stress by opening pores in the seed coat

Bai

Xiao

Zhang

et al. 2020

PeerJ

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The germination of cotton (Gossypium hirsutum L.) seeds is affected by drought stress; however, little is known about the physiological mechanism affecting germination and the effect of melatonin (MT) on cotton seed germination under drought stress. Therefore, we studied the effects of exogenous MT on the antioxidant capacity and epidermal microstructure of cotton under drought stress. The results demonstrated a retarded water absorption capacity of testa under drought stress, significantly inhibiting germination and growth in cotton seeds. Drought stress led to the accumulation of reactive oxygen species (ROS), malondialdehyde (MDA), and osmoregulatory substances (e.g., proline, soluble protein, and soluble sugars); it also decreased the activity of antioxidant enzymes and α-amylase. Drought stress inhibited gibberellin acid (GA3) synthesis and increased abscisic acid (ABA) content, seriously affecting seed germination. However, seeds pre-soaked with MT (100 µM) showed a positive regulation in the number and opening of stomata in cotton testa. The exogenous application of MT increased the germination rate, germination potential, radical length, and fresh weight, as well as the activities of superoxide dismutase (SOD), peroxidase (POD), and α-amylase. In addition, MT application increased the contents of organic osmotic substances by decreasing the hydrogen peroxide (H2O2), superoxide anion (O2-), and MDA levels under drought stress. Further analysis demonstrated that seeds pre-soaked with MT alleviated drought stress by affecting the ABA and GA3 contents. Our findings show that MT plays a positive role in protecting cotton seeds from drought stress.

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Section: Discussionmentioning

confidence: 99%

Melatonin improves the germination rate of cotton seeds under drought stress by opening pores in the seed coat

Bai

Xiao

Zhang

et al. 2020

PeerJ

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“…According to Kumar et al [149], the activity of APX and GR was significantly suppressed in sensitive chickpea genotypes (ICC14183 and ICC5912) with increasing almost 2-fold H 2 O 2 under HT conditions in comparison with tolerant genotypes (ICCV07110 and ICCV92944). Liu et al [93] reported decreased SOD and CAT activities with corresponding suppressed OsSOD, OsCAT, and OsAPX2 expression, resulting in higher accumulation of H 2 O 2 (1.27-fold) in germinating rice seeds under HT stress. Sarkar et al [198] found elevated activity of CAT and POX in wheat genotypes under HT stress (30 • C).…”

Section: Antioxidant Defense In Plants Under High Temperaturementioning

confidence: 99%

“…Nipponbare Osmotic stress (20% PEG-6000), 5 d Decreased SOD, APX, and CAT activities, but POD activity increased by 59% compared to control. [93] S. lycopersicum cv. Login 935 Drought stress (60% FC), 20 d…”

Section: Antioxidant Defense In Plants Under Floodingmentioning

confidence: 99%

Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

et al. 2020

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Global climate change and associated adverse abiotic stress conditions, such as drought, salinity, heavy metals, waterlogging, extreme temperatures, oxygen deprivation, etc., greatly influence plant growth and development, ultimately affecting crop yield and quality, as well as agricultural sustainability in general. Plant cells produce oxygen radicals and their derivatives, so-called reactive oxygen species (ROS), during various processes associated with abiotic stress. Moreover, the generation of ROS is a fundamental process in higher plants and employs to transmit cellular signaling information in response to the changing environmental conditions. One of the most crucial consequences of abiotic stress is the disturbance of the equilibrium between the generation of ROS and antioxidant defense systems triggering the excessive accumulation of ROS and inducing oxidative stress in plants. Notably, the equilibrium between the detoxification and generation of ROS is maintained by both enzymatic and nonenzymatic antioxidant defense systems under harsh environmental stresses. Although this field of research has attracted massive interest, it largely remains unexplored, and our understanding of ROS signaling remains poorly understood. In this review, we have documented the recent advancement illustrating the harmful effects of ROS, antioxidant defense system involved in ROS detoxification under different abiotic stresses, and molecular cross-talk with other important signal molecules such as reactive nitrogen, sulfur, and carbonyl species. In addition, state-of-the-art molecular approaches of ROS-mediated improvement in plant antioxidant defense during the acclimation process against abiotic stresses have also been discussed.

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“…When seeds are germinated in non-optimal conditions there is a positive correlation between ROS scavenging ability through antioxidant systems and germination rate. For example, among only recent studies, seed antioxidant enzyme activities have been demonstrated to increase in response to high temperature and drought stress [43,80], low temperature [81], salt stress [82,83] or mutagen agents [38]. In those cases, the activation of antioxidant enzymes is necessary to prevent excessive ROS accumulation and related oxidative damage.…”

Section: Ros Production In Seedsmentioning

confidence: 99%

The signalling role of ROS in the regulation of seed germination and dormancy

Bailly

2019

Biochemical Journal

232

185

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Reactive oxygen species (ROS) are versatile compounds which can have toxic or signalling effects in a wide range living organisms, including seeds. They have been reported to play a pivotal role in the regulation of seed germination and dormancy but their mechanisms of action are still far from being fully understood. In this review, we sum-up the major findings that have been carried out this last decade in this field of research and which altogether shed a new light on the signalling roles of ROS in seed physiology. ROS participate in dormancy release during seed dry storage through the direct oxidation of a subset of biomolecules. During seed imbibition, the controlled generation of ROS is involved in the perception and transduction of environmental conditions that control germination. When these conditions are permissive for germination, ROS levels are maintained at a level which triggers cellular events associated with germination, such as hormone signalling. Here we propose that the spatiotemporal regulation of ROS production acts in concert with hormone signalling to regulate the cellular events involved in cell expansion associated with germination.

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High temperature and drought stress cause abscisic acid and reactive oxygen species accumulation and suppress seed germination growth in rice

Cited by 142 publications

References 71 publications

Melatonin improves the germination rate of cotton seeds under drought stress by opening pores in the seed coat

Melatonin improves the germination rate of cotton seeds under drought stress by opening pores in the seed coat

Reactive Oxygen Species and Antioxidant Defense in Plants under Abiotic Stress: Revisiting the Crucial Role of a Universal Defense Regulator

The signalling role of ROS in the regulation of seed germination and dormancy

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