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Gasotransmitters in Plants: Physiological Functions and Potential Applications
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Gasotransmitters in Plants: Physiological Functions and Potential Applications

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: 31 December 2024 | Viewed by 4511

Special Issue Editors

Prof. Dr. Wenbiao Shen

E-Mail Website1 Website2
Guest Editor
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
Interests: physiological functions and potential applications of gasotransmitters in plants
Prof. Dr. Hua Zhang

E-Mail Website
Guest Editor
School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
Interests: hydrogen sulfide signaling pathway; postharvest storage biology; fruit ripening and senescence

Special Issue Information

Dear Colleagues,

The term “gasotransmitters” is used to define small gaseous molecules that perform signaling functions in animals, plants, and microbes. Gasotransmitters can be generated via enzymatic and non-enzymatic pathways and exert their physiological functions at relatively low levels. In plants, the main gasotransmitters are nitric oxide (NO), hydrogen sulfide (H2S), and carbon monoxide (CO). Moreover, progress in recent decades has provided evidence that molecular hydrogen (H2) and methane (CH4) are two potential gasotransmitters. Gaseous phytohormone ethylene (C2H4) is also regarded as a classical gasotransmitter due to its broad roles in regulating both growth and senescence.

In recent decades, the functions of gasotransmitters have been actively researched in plants through exogenous supply and genetic manipulation. Furthermore, the endogenous roles and emissions of gasotransmitters have been explored by constructing mutants related to the enzymatic synthesis of gasotransmitters. Previous studies have provided considerable evidence to show that gasotransmitters including NO, H2S, CO, and H2 in plants play a crucial role in influencing tolerance to biotic and abiotic stresses, growth and development, senescence, autophagy, etc. Several gasotransmitters, such as NO, H2S, and H2, are normally used to delay the postharvest senescence of multiple horticultural products. However, more physiological functions and potential applications remain to be discovered. This Special Issue of Plants will highlight the functions and applications of gasotransmitters in model plants, crop plants, trees, aquatic plants, etc. In particular, the positive results of field trials related to the application of gasotransmitters in agriculture are welcomed.

Prof. Dr. Wenbiao Shen
Prof. Dr. Hua Zhang
Guest Editors

Manuscript Submission Information

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • gasotransmitters
  • plants
  • physiological functions
  • potential applications
  • signaling mechanism
  • biotic and abiotic stresses
  • plant growth and development
  • postharvest senescence
  • ripening
  • gene regulation

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Published Papers (3 papers)

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18 pages, 11414 KiB  
Article
Strawberry Yield Improvement by Hydrogen-Based Irrigation Is Functionally Linked to Altered Rhizosphere Microbial Communities
by Longna Li, Huize Huang, Zhiwei Jin, Ke Jiang, Yan Zeng, Didier Pathier, Xu Cheng and Wenbiao Shen
Plants 2024, 13(13), 1723; https://doi.org/10.3390/plants13131723 - 21 Jun 2024
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Abstract
Molecular hydrogen (H2) is crucial for agricultural microbial systems. However, the mechanisms underlying its influence on crop yields is yet to be fully elucidated. This study observed that H2-based irrigation significantly increased strawberry (Fragaria × ananassa Duch.) yield [...] Read more.
Molecular hydrogen (H2) is crucial for agricultural microbial systems. However, the mechanisms underlying its influence on crop yields is yet to be fully elucidated. This study observed that H2-based irrigation significantly increased strawberry (Fragaria × ananassa Duch.) yield with/without nutrient fertilization. The reduction in soil available nitrogen (N), phosphorus (P), potassium (K), and organic matter was consistent with the increased expression levels of N/P/K-absorption-related genes in root tissues at the fruiting stage. Metagenomics profiling showed the alterations in rhizosphere microbial community composition achieved by H2, particularly under the conditions without fertilizers. These included the enrichment of plant-growth-promoting rhizobacteria, such as Burkholderia, Pseudomonas, and Cupriavidus genera. Rhizobacteria with the capability to oxidize H2 (group 2a [NiFe] hydrogenase) were also enriched. Consistently, genes related to soil carbon (C) fixation (i.e., rbcL, porD, frdAB, etc.), dissimilar nitrate reduction (i.e., napAB and nrfAH), and P solublization, mineralization, and transportation (i.e., ppx-gppA, appA, and ugpABCE) exhibited higher abundance. Contrary tendencies were observed in the soil C degradation and N denitrification genes. Together, these results clearly indicate that microbe-mediated soil C, N, and P cycles might be functionally altered by H2, thus increasing plant nutrient uptake capacity and horticultural crop yield. Full article
(This article belongs to the Special Issue Gasotransmitters in Plants: Physiological Functions and Potential Applications)
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12 pages, 2681 KiB  
Article
Hydrogen Peroxide Promotes Tomato Leaf Senescence by Regulating Antioxidant System and Hydrogen Sulfide Metabolism
by Yue Yu, Siyue Wang, Wentong Guo, Meihui Geng, Ying Sun, Wanjie Li, Gaifang Yao, Danfeng Zhang, Hua Zhang and Kangdi Hu
Plants 2024, 13(4), 475; https://doi.org/10.3390/plants13040475 - 7 Feb 2024
Cited by 2 | Viewed by 1302
Abstract
Hydrogen peroxide (H2O2) is relatively stable among ROS (reactive oxygen species) and could act as a signal in plant cells. In the present work, detached tomato leaves were treated with exogenous H2O2 at 10 mmol/L for [...] Read more.
Hydrogen peroxide (H2O2) is relatively stable among ROS (reactive oxygen species) and could act as a signal in plant cells. In the present work, detached tomato leaves were treated with exogenous H2O2 at 10 mmol/L for 8 h to study the mechanism of how H2O2 regulates leaf senescence. The data indicated that H2O2 treatment significantly accelerated the degradation of chlorophyll and led to the upregulation of the expression of leaf senescence-related genes (NYC1, PAO, PPH, SGR1, SAG12 and SAG15) during leaf senescence. H2O2 treatment also induced the accumulation of H2O2 and malondialdehyde (MDA), decreased POD and SOD enzyme activities and inhibited H2S production by reducing the expression of LCD1/2 and DCD1/2. A correlation analysis indicated that H2O2 was significantly and negatively correlated with chlorophyll, the expression of leaf senescence−related genes, and LCD1/2 and DCD1/2. The principal component analysis (PCA) results show that H2S showed the highest load value followed by O2•−, H2O2, DCD1, SAG15, etc. Therefore, these findings provide a basis for studying the role of H2O2 in regulating detached tomato leaf senescence and demonstrated that H2O2 plays a positive role in the senescence of detached leaves by repressing antioxidant enzymes and H2S production. Full article
(This article belongs to the Special Issue Gasotransmitters in Plants: Physiological Functions and Potential Applications)
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18 pages, 3366 KiB  
Article
Hydrogen Fertilization with Hydrogen Nanobubble Water Improves Yield and Quality of Cherry Tomatoes Compared to the Conventional Fertilizers
by Min Li, Guanjie Zhu, Ziyu Liu, Longna Li, Shu Wang, Yuhao Liu, Wei Lu, Yan Zeng, Xu Cheng and Wenbiao Shen
Plants 2024, 13(3), 443; https://doi.org/10.3390/plants13030443 - 2 Feb 2024
Cited by 3 | Viewed by 1767
Abstract
Although hydrogen gas (H2)-treated soil improves crop biomass, this approach appears difficult for field application due to the flammability of H2 gas. In this report, we investigated whether and how H2 applied in hydrogen nanobubble water (HNW) improves the [...] Read more.
Although hydrogen gas (H2)-treated soil improves crop biomass, this approach appears difficult for field application due to the flammability of H2 gas. In this report, we investigated whether and how H2 applied in hydrogen nanobubble water (HNW) improves the yield and quality of cherry tomato (Lycopersicon esculentum var. cerasiforme) with and without fertilizers. Two-year-long field trials showed that compared to corresponding controls, HNW without and with fertilizers improved the cherry tomato yield per plant by 39.7% and 26.5% in 2021 (Shanghai), respectively, and by 39.4% and 28.2% in 2023 (Nanjing), respectively. Compared to surface water (SW), HNW increased the soil available nitrogen (N), phosphorus (P), and potassium (K) consumption regardless of fertilizer application, which may be attributed to the increased NPK transport-related genes in roots (LeAMT2, LePT2, LePT5, and SlHKT1,1). Furthermore, HNW-irrigated cherry tomatoes displayed a higher sugar–acid ratio (8.6%) and lycopene content (22.3%) than SW-irrigated plants without fertilizers. Importantly, the beneficial effects of HNW without fertilizers on the yield per plant (9.1%), sugar–acid ratio (31.1%), and volatiles (20.0%) and lycopene contents (54.3%) were stronger than those achieved using fertilizers alone. In short, this study clearly indicated that HNW-supplied H2 not only exhibited a fertilization effect on enhancing the tomato yield, but also improved the fruit’s quality with a lower carbon footprint. Full article
(This article belongs to the Special Issue Gasotransmitters in Plants: Physiological Functions and Potential Applications)
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