Hydrogen Peroxide Signaling in Plant Development and Abiotic Responses: Crosstalk with Nitric Oxide and Calcium

Niu, Lijuan; Liao, Weibiao

doi:10.3389/fpls.2016.00230

Cited by 284 publications

(188 citation statements)

References 129 publications

Supporting

Mentioning

184

Contrasting

Order By: Relevance

“…Intracellular Ca 2+ increases were reported to be a consequence of an uptake from the extracellular space or due to Ca 2+ liberation from intracellular stores. Therefore, NO Results of the present study show that NO and H 2 O 2 mediate SO 2 toxicity via Ca 2+ -dependent pathway, which is consistent with previous reports showing that NO and H 2 O 2 act via Ca 2+ signaling pathways in plants responding to abiotic stress (Pei et al 2000;Qiao and Fan 2014;Niu and Liao 2016). These results will broaden our understanding on how plants respond to environmental stress.…”

Section: Discussionsupporting

confidence: 92%

NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

Bai

Xue

et al. 2017

Environ Sci Pollut Res

View full text Add to dashboard Cite

NO and H 2 O 2 have been implicated as important signals in biotic and abiotic stress responses of plants to the environment. Previously, we have shown that SO 2 exposure increased the levels of NO and H 2 O 2 in plant cells. We hypothesize that, as signaling molecules, NO and H 2 O 2 mediate SO 2 -caused toxicity. In this paper, we show that SO 2 hydrates caused guard cell death in a concentration-dependent manner in the concentration range of 0.25 to 6 mmol L −1 , which was associated with elevation of intracellular NO, H 2 O 2 , and Ca 2+ levels in Vicia faba guard cells. NO donor SNP enhanced SO 2 toxicity, while NO scavenger c-PTIO and NO synthesis inhibitors L-NAME and tungstate significantly prevented SO 2 toxicity. ROS scavenger ascorbic acid (AsA) and catalase (CAT), Ca 2+ chelating agent EGTA, and Ca 2+ channel inhibitor LaCl 3 also markedly blocked SO 2 toxicity. In addition, both c-PTIO and AsA could completely block SO 2 -induced elevation of intracellular Ca 2+ level. Moreover, c-PTIO efficiently blocked SO 2 -induced H 2 O 2 elevation, and AsA significantly blocked SO 2 -induced NO elevation. These results indicate that extra NO and H 2 O 2 are produced and accumulated in SO 2 -treated guard cells, which further activate Ca 2+ signaling to mediate SO 2 toxicity. Our findings suggest that both NO and H 2 O 2 contribute to SO 2 toxicity via Ca 2+ signaling.

show abstract

Section: Discussionsupporting

confidence: 92%

NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

Bai

Xue

et al. 2017

Environ Sci Pollut Res

View full text Add to dashboard Cite

show abstract

“…Polyamine oxidase catalyses Spd or Spm oxidation for production of H 2 O 2 . H 2 O 2 is signalling to regulate expression of numerous genes relative to stress responses (Niu & Liao, ). H 2 O 2 is accumulated as a result of induced PAO activity that leads to Spd and Spm oxidation in MfSAMS1 transgenic tobacco plants and induces gene expression with enhanced activities of antioxidant enzymes (Guo et al, ).…”

Section: Discussionmentioning

confidence: 99%

A cold responsive ethylene responsive factor from Medicago falcata confers cold tolerance by up-regulation of polyamine turnover, antioxidant protection, and proline accumulation

et al. 2018

View full text Add to dashboard Cite

Ethylene responsive factor (ERF) subfamily transcription factors play an important role in plant abiotic and biotic stress tolerance. A cold responsive ERF, MfERF1, was isolated from Medicago falcata, an important forage legume that has great cold tolerance. Overexpression of MfERF1 resulted in an increased tolerance to freezing and chilling in transgenic tobacco plants, whereas down-regulation of the ortholog of MfERF1 in Medicago truncatula resulted in reduced freezing tolerance in RNAi plants. Higher transcript levels of some stress responsive genes (CHN50, OSM, ERD10C, and SAMS) and those involved in spermidine (Spd) and spermine (Spm) synthesis (SAMDC1, SAMDC2, SPDS1, SPDS2, and SPMS) and catabolism (PAO) were observed in transgenic plants than in wild type. However, neither Spd nor Spm level was accumulated in transgenic plants as a result of promoted polyamine oxidase activity. Transgenic plants had higher activities of antioxidants associated with the induced encoding genes including Cu, Zn-SOD, CAT1, CAT2, CAT3, and cpAPX and accumulated more proline associated with induced P5CS and reduced PROX2 transcription as compared with wild type. The results suggest that MfERF1 confers cold tolerance through promoted polyamine turnover, antioxidant protection, and proline accumulation.

show abstract

“…Our previous work also showed that heat shock could improve the resistance of maize seedlings to heat, chilling, salt, and drought stress (Gong et al, 2001). Numerous studies found that the acquisition of stress tolerance including cross-adaptation was involved in a complex signal network consisting of many second messengers such as Ca 2+ , abscisic acid (ABA), hydrogen peroxide (H 2 O 2 ) and nitric oxide (NO), as well as their crosstalk (Knight, 2000; Pandey, 2015; Li and Gu, 2016; Li and Jin, 2016; Niu and Liao, 2016; Wang et al, 2016). In tobacco, mechanical stimulation can successively trigger H 2 O 2 and NO signaling (Li and Gong, 2011, 2013), heat shock can induce Ca 2+ and ABA signaling one after the other (Gong et al, 1998a,b), which in turn induce cross-adaptation to heat and chilling stress, similar results were reported by Gong et al (2001) in maize seedlings.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Sulfide: A Signal Molecule in Plant Cross-Adaptation

2016

View full text Add to dashboard Cite

For a long time, hydrogen sulfide (H2S) has been considered as merely a toxic by product of cell metabolism, but nowadays is emerging as a novel gaseous signal molecule, which participates in seed germination, plant growth and development, as well as the acquisition of stress tolerance including cross-adaptation in plants. Cross-adaptation, widely existing in nature, is the phenomenon in which plants expose to a moderate stress can induce the resistance to other stresses. The mechanism of cross-adaptation is involved in a complex signal network consisting of many second messengers such as Ca2+, abscisic acid, hydrogen peroxide and nitric oxide, as well as their crosstalk. The cross-adaptation signaling is commonly triggered by moderate environmental stress or exogenous application of signal molecules or their donors, which in turn induces cross-adaptation by enhancing antioxidant system activity, accumulating osmolytes, synthesizing heat shock proteins, as well as maintaining ion and nutrient balance. In this review, based on the current knowledge on H2S and cross-adaptation in plant biology, H2S homeostasis in plant cells under normal growth conditions; H2S signaling triggered by abiotic stress; and H2S-induced cross-adaptation to heavy metal, salt, drought, cold, heat, and flooding stress were summarized, and concluded that H2S might be a candidate signal molecule in plant cross-adaptation. In addition, future research direction also has been proposed.

show abstract

Hydrogen Peroxide Signaling in Plant Development and Abiotic Responses: Crosstalk with Nitric Oxide and Calcium

Cited by 284 publications

References 129 publications

NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

NO and H2O2 contribute to SO2 toxicity via Ca2+ signaling in Vicia faba guard cells

A cold responsive ethylene responsive factor from Medicago falcata confers cold tolerance by up-regulation of polyamine turnover, antioxidant protection, and proline accumulation

Hydrogen Sulfide: A Signal Molecule in Plant Cross-Adaptation

Contact Info

Product

Resources

About