Alleviation of Drought Stress by Hydrogen Sulfide Is Partially Related to the Abscisic Acid Signaling Pathway in Wheat

Ma, Dongyun; Ding, Haidong; Wang, Chenyang; Qin, Hong‐Yan; Han, Qinghua; Hou, Jingbo; Lü, Hongfang; Xie, Yingxin; Guo, Tao

doi:10.1371/journal.pone.0163082

Cited by 111 publications

(51 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In contrast to no S supply, application of S fertilizers considerably (P < 0.001) increased the activities of CAT, GPX and SOD (Suppl. Table 2), which was consistent with the maintenance of photosynthetic capacity following S supplementation under drought stress as reported by Ma et al 77 in wheat. Adequate S supply helps to counteract the drastic effects of ROS on nucleic acids and proteins through upregulation of antioxidant enzymes such as CAT, GPX and SOD 78 .…”

Section: Discussionsupporting

confidence: 91%

Sulfate-mediated Drought Tolerance in Maize Involves Regulation at Physiological and Biochemical Levels

Usmani

Nawaz

Majeed³

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Restriction in nutrient acquisition is one of the primary causes for reduced growth and yield in water deficient soils. Sulfur (S) is an important secondary macronutrient that interacts with several stress metabolites to improve performance of food crops under various environmental stresses including drought. Increased S supply influences uptake and distribution of essential nutrients to confer nutritional homeostasis in plants exposed to limited water conditions. The regulation of S metabolism in plants, resulting in synthesis of numerous S-containing compounds, is crucial to the acclimation response to drought stress. Two different experiments were laid out in semi-controlled conditions to investigate the effects of different S sources on physiological and biochemical mechanisms of maize (Zea mays L. cv. P1574). Initially, the rate of S application in maize was optimized in terms of improved biomass and nutrient uptake. The maize seedlings were grown in sandy loam soil fertigated with various doses (0, 15, 30 and 45 kg ha −1) of different S fertilizers viz. K 2 So 4 , feSo 4 , cuSo 4 and na 2 So 4. The optimized S dose of each fertilizer was later tested in second experiment to determine its role in improving drought tolerance of maize plants. A marked effect of S fertilization was observed on biomass accumulation and nutrients uptake in maize. In addition, the optimized doses significantly increased the gas exchange characteristics and activity of antioxidant enzymes to improve yield of maize. Among various S sources, application of K 2 So 4 resulted in maximum photosynthetic rate (43%), stomatal conductance (98%), transpiration rate (61%) and sub-stomatal conductance (127%) compared to no S supply. Moreover, it also increased catalase, guaiacol peroxidase and superoxide dismutase activities by 55, 87 and 65%, respectively that ultimately improved maize yield by 33% with respect to control under water deficit conditions. These results highlight the importance of S fertilizers that would likely be helpful for farmers to get better yield in water deficient soils. Maize (Zea mays L.) is one of the major cereal crops that provide food for humans and feed for livestock. The demand for maize seed has increased significantly during past few decades due to its consumption in poultry feed and wet milling industry. The importance of maize as a food crop is well recognized and is used as a staple food in many parts of the world 1. Maize seed is an abundant source of energy as 100 g seed provides 365 kilocalories of energy 2. However, it is an extensive nutrient crop and excessive use of fertilizers to obtain high yield has resulted in the depletion of nutrients particularly sulfur (S) in soils 3. Moreover, water shortage due to climate change may induce further losses in maize production in future. Adaptation of maize to limited water conditions has received great interest from farmers, researchers and policy makers considering its importance in nutritional food security. Since maize requires large quantities of water to...

show abstract

Section: Discussionsupporting

confidence: 91%

Sulfate-mediated Drought Tolerance in Maize Involves Regulation at Physiological and Biochemical Levels

Usmani

Nawaz

Majeed³

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…3A) was found, indicating the accumulation of ABA stimulated by nitrate was not associated with de novo ABA synthesis. Then, the expression of a set of genes involved in ABA biosynthesis and metabolism (Lee et al, 2006;Seiler et al, 2011;Xu et al, 2012b;Ma et al, 2016) was examined. As shown in Figure 3D, only the transcription levels of TaBG1 and TaBG2, responsible for deconjugation of ABA-GE, were affected by nitrate.…”

Section: Genes In Wheat Rootsmentioning

confidence: 99%

TaANR1-TaBG1 and TaWabi5-TaNRT2s/NARs Link ABA Metabolism and Nitrate Acquisition in Wheat Roots

et al. 2020

View full text Add to dashboard Cite

Nitrate is the preferred form of nitrogen for most plants, acting both as a nutrient and a signaling molecule. However, the components and regulatory factors governing nitrate uptake in bread wheat (Triticum aestivum), one of the world's most important crop species, have remained unclear, largely due to the complexity of its hexaploid genome. Here, based on recently released whole-genome information for bread wheat, the high-affinity nitrate transporter2 (NRT2) and the nitrateassimilation-related (NAR) gene family are characterized. We show that abscisic acid (ABA)-Glc ester deconjugation is stimulated in bread wheat roots by nitrate resupply following nitrate withdrawal, leading to enhanced root-tissue ABA accumulation, and that this enhancement, in turn, affects the expression of root-type NRT2/NAR genes. TaANR1 is shown to regulate nitrate-mediated ABA accumulation by directly activating TaBG1, while TaWabi5 is involved in ABA-mediated NO 3 2 induction of NRT2/NAR genes. Building on previous evidence establishing ABA involvement in the developmental response to high-nitrate stress, our study suggests that ABA also contributes to the optimization of nitrate uptake by regulating the expression of NRT2/NAR genes under limited nitrate supply, offering a new target for improvement of nitrate absorption in crops.

show abstract

“…Several studies have demonstrated that drought stress induces H 2 S production in Arabidopsis thaliana [2,27] (Figure 1). Meanwhile, abscisic acid (ABA) application improved the endogenous H 2 S content in wheat under drought stress [28]. In addition, increasing evidence has indicated that temperature stress also induces the release of H 2 S in grape [29] and cucumber [30].…”

Section: Hydrogen Sulfide (H 2 S)mentioning

confidence: 99%

“…H 2 S has been reported to reduce the transcriptional expression of ABA receptors in A. thaliana under drought stress conditions, thereby enhancing drought tolerance [94] (Table 2). In addition, the exogenous application of an H 2 S donor (NaHS) improved ABA biosynthesis and ABA reactivation gene expression levels in wheat leaves and enhanced the plant and relative water content of wheat seedlings leaves [28]. Meanwhile, H 2 S was found to increase the survival rates of A. thaliana seedlings and significantly reduce the stomatal pore size under drought stress [27].…”

Section: Drought Stressmentioning

confidence: 99%

Research Progress on the Functions of Gasotransmitters in Plant Responses to Abiotic Stresses

Yao

Yang

et al. 2019

Plants

View full text Add to dashboard Cite

Abiotic stress is one of the major threats affecting plant growth and production. The harm of abiotic stresses includes the disruption of cellular redox homeostasis, reactive oxygen species (ROS) production, and oxidative stress in the plant. Plants have different mechanisms to fight stress, and these mechanisms are responsible for maintaining the required homeostasis in plants. Recently, the study of gasotransmitters in plants has attracted much attention, especially for abiotic stress. In the present review, abiotic stressors were mostly found to induce gasotransmitter production in plants. Meanwhile, these gasotransmitters can enhance the activity of several antioxidant enzymes, alleviate the harmfulness of ROS, and enhance plant tolerance under various stress conditions. In addition, we introduced the interaction of gasotransmitters in plants under abiotic stress. With their promising applications in agriculture, gasotransmitters will be adopted in the near future.Plants 2019, 8, 605 2 of 23 unique and regulate specific biological functions. Gasotransmitters have long been of great interest in a wide range of fields. Over the past few decades, the roles of these signaling molecules have been extensively studied for their biological applications. Recently, the emissions of endogenous gasotransmitters in plants have been widely studied and analyzed, thereby providing information to facilitate our understanding of new gasotransmitter signaling pathways. Previous studies found that in response to abiotic stressors, plants usually produce these gasotransmitters [12][13][14]. In addition, there is now considerable evidence to show that gasotransmitters can play a pivotal role in enhancing plant tolerance [2,15,16]. Subsequently, biological gases from complex extra and intracellular pathways and gas mediators may regulate many processes in an antagonistic or synergistic way.In the present review, we introduce the production of gasotransmitters in plants under abiotic stress. Meanwhile, we focused on the recent advances in the roles of gasotransmitters under abiotic stresses and their interaction with other gasotransmitters.

show abstract

Alleviation of Drought Stress by Hydrogen Sulfide Is Partially Related to the Abscisic Acid Signaling Pathway in Wheat

Cited by 111 publications

References 33 publications

Sulfate-mediated Drought Tolerance in Maize Involves Regulation at Physiological and Biochemical Levels

Sulfate-mediated Drought Tolerance in Maize Involves Regulation at Physiological and Biochemical Levels

TaANR1-TaBG1 and TaWabi5-TaNRT2s/NARs Link ABA Metabolism and Nitrate Acquisition in Wheat Roots

Research Progress on the Functions of Gasotransmitters in Plant Responses to Abiotic Stresses

Contact Info

Product

Resources

About