A systems biology study unveils the association between a melatonin biosynthesis gene, O-methyl transferase 1 (OMT1) and wheat (Triticum aestivum L.) combined drought and salinity stress tolerance

Shamloo‐Dashtpagerdi, Roohollah; Aliakbari, Massume; Lindlöf, Angelica; Tahmasebi, Sirus

doi:10.1007/s00425-022-03885-4

Cited by 18 publications

(16 citation statements)

References 78 publications

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“…In plants, a lower Na + /K + ratio aids salt-tolerant genotypes in performing well in saline environments and sustaining cellular metabolism by boosting protein synthesis, controlling enzyme activation, photosynthetic activity, osmoregulation and enhanced cell turgor [57]. In the current study, wheat plants treated with methyl jasmonate had higher K + levels in their shoots than those not treated with methyl jasmonate, as previously reported [58]. This elevated K + concentration can be attributable to a rise in root plasma membrane H-ATPase pumps when methyl jasmonate is applied.…”

Section: Methyl Jasmonate Provision Considerably Reduces Thesupporting

confidence: 84%

Exogenous Methyl Jasmonate Acclimate Morpho-Physiological, Ionic and Gas Exchange Attributes of Wheat Genotypes (<i>Triticum aestivum</i> L.) under Salt Stress

Ahmed¹,

Abbasi²,

Jamil³

et al. 2022

Pol. J. Environ. Stud.

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Salinity is a serious menace that has a significant influence on sustainability of agriculture and threatens food security of the world. Methyl jasmonate appeared to be an important modulator with different specific functions in plants and increase the resistance against different abiotic stresses. A hydroponic study was performed with three salt (control, 100 mM and 200 mM NaCl) and two methyl jasmonate concentrations (50 µM and 100 µM) applied in sole and integrate form. Methyl jasmonate treated plants exhibits improved growth mass and antioxidant safeguard. The imposition of salt in growth medium drastically reduced the plant growth, physiological, gas exchange, ionic and biochemical attributes. Application of methyl jasmonate significantly alleviated the deleterious effects of salinity by depicting the improvement in plant biomass, RWC, MSI, transpiration rate, photosynthetic rate, stomatal conductance, internal CO 2 concentration, chlorophyll contents, oxidative stress indicators, activity of antioxidant enzymes (POD, CAT, APX and SOD) and K + /Na + ratio. The results also disclose that response of wheat genotypes against methyl jasmonate application under saline condition show a concentration effect and varietal diversity. Moreover, the application of 100µM methyl jasmonate under low and elevated salt concentration shows prominent response towards wheat genotype Faislabad-2008 while least response was observed in wheat genotype Victoria.

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Section: Methyl Jasmonate Provision Considerably Reduces Thesupporting

confidence: 84%

Exogenous Methyl Jasmonate Acclimate Morpho-Physiological, Ionic and Gas Exchange Attributes of Wheat Genotypes (<i>Triticum aestivum</i> L.) under Salt Stress

Ahmed¹,

Abbasi²,

Jamil³

et al. 2022

Pol. J. Environ. Stud.

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“…Moreover, to reestablish the redox homeostasis, melatonin also enhanced the expression of genes encoding antioxidant enzymes (such as APX1 , APX2 , CAT1 , FSD1 , CuZnSOD , and MnSOD ), and improved the activities of APX, SOD, CAT, POD, Δ1-pyrroline-5-carboxylate synthesis (P5CS), as well as the levels of antioxidants (ASC, GSH, proline, and total soluble carbohydrates) [ 12 , 35 , 36 , 40 , 42 , 47 , 54 , 55 , 56 , 57 , 58 , 59 ] ( Table 1 ). Similarly, it was well established that melatonin boosted the activities of many antioxidant enzymes (including SOD, POD, APX, CAT, DHAR, GST, GR, MDHAR, and PPO) and the levels of antioxidants (including ASC, DHA, GSH, proline, flavonoid, carotenoid, and phenolic compounds), thus reducing ROS levels and improving tolerance to drought stress in plants, such as maize, tomato, citrus, soybean, Malus , or kiwifruit plants [ 14 , 39 , 60 , 61 , 62 , 63 , 64 ] ( Table 1 ). Melatonin also acted as a priming agent to improve Medicago sativa tolerance to drought stress via the nitro-oxidative homeostasis [ 65 ].…”

Section: Melatonin Acts As An Antioxidant To Establish Redox Homeosta...mentioning

confidence: 99%

Crosstalk between Melatonin and Reactive Oxygen Species in Plant Abiotic Stress Responses: An Update

Xiao

Chen

et al. 2022

IJMS

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Melatonin acts as a multifunctional molecule that takes part in various physiological processes, especially in the protection against abiotic stresses, such as salinity, drought, heat, cold, heavy metals, etc. These stresses typically elicit reactive oxygen species (ROS) accumulation. Excessive ROS induce oxidative stress and decrease crop growth and productivity. Significant advances in melatonin initiate a complex antioxidant system that modulates ROS homeostasis in plants. Numerous evidences further reveal that melatonin often cooperates with other signaling molecules, such as ROS, nitric oxide (NO), and hydrogen sulfide (H2S). The interaction among melatonin, NO, H2S, and ROS orchestrates the responses to abiotic stresses via signaling networks, thus conferring the plant tolerance. In this review, we summarize the roles of melatonin in establishing redox homeostasis through the antioxidant system and the current progress of complex interactions among melatonin, NO, H2S, and ROS in higher plant responses to abiotic stresses. We further highlight the vital role of respiratory burst oxidase homologs (RBOHs) during these processes. The complicated integration that occurs between ROS and melatonin in plants is also discussed.

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“…Previous studies indicated that, under normal conditions, melatonin content is relatively constant; however, it strongly increases in response to different abiotic and biotic stresses (Ayyaz et al, 2022). Shamloo‐Dashtpagerdi, Aliakbari, et al (2022) reported a significant increase in endogenous melatonin levels in wheat plants exposed to combined drought and salinity stress. Exposure to salinity and ROS stress also significantly enhanced endogenous melatonin accumulation in rice and barley (Arnao & Hernández‐Ruiz, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Cadmium stress activated the transcription of the OMT1 gene in tomato seedlings leading to melatonin accumulation and cadmium tolerance (Cai et al, 2017). Likewise, combined drought and salinity led to upregulation of the OMT1 gene and enhanced melatonin content (Shamloo-Dashtpagerdi, Aliakbari, et al, 2022). Moreover, a higher transcription of SNAT and ASMT genes led to higher melatonin production under high temperature and dark conditions in rice seedlings (Byeon & Back, 2015).…”

Section: Discussionmentioning

confidence: 99%

Evidence that miR168a contributes to salinity tolerance of Brassica rapa L. via mediating melatonin biosynthesis

Shamloo‐Dashtpagerdi

Lindlöf

Tahmasebi

2022

Physiologia Plantarum

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Melatonin is a master regulator of diverse biological processes, including plant's abiotic stress responses and tolerance. Despite the extensive information on the role of melatonin in response to abiotic stress, how plants regulate endogenous melatonin content under stressful conditions remains largely unknown. In this study, we computationally mined Expressed Sequence Tag (EST) libraries of salinity‐exposed Chinese cabbage (Brassica rapa) to identify the most reliable differentially expressed miRNA and its target gene(s). In light of these analyses, we found that miR168a potentially targets a key melatonin biosynthesis gene, namely O‐METHYLTRANSFERASE 1 (OMT1). Accordingly, molecular and physiochemical evaluations were performed in a separate salinity experiment using contrasting B. rapa genotypes. Then, the association between B. rapa salinity tolerance and changes in measured molecular and physiochemical characteristics was determined. Results indicated that the expression profiles of miR168a and OMT1 significantly differed between B. rapa genotypes. Moreover, the expression profiles of miR168a and OMT1 significantly correlated with more melatonin content, robust antioxidant activities, and better ion homeostasis during salinity stress. Our results suggest that miR168a plausibly mediates melatonin biosynthesis, mainly through the OMT1 gene, under salinity conditions and thereby contributes to the salinity tolerance of B. rapa. To our knowledge, this is the first report on the role of miR168a and OMT1 in B. rapa salinity response.

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A systems biology study unveils the association between a melatonin biosynthesis gene, O-methyl transferase 1 (OMT1) and wheat (Triticum aestivum L.) combined drought and salinity stress tolerance

Cited by 18 publications

References 78 publications

Exogenous Methyl Jasmonate Acclimate Morpho-Physiological, Ionic and Gas Exchange Attributes of Wheat Genotypes (<i>Triticum aestivum</i> L.) under Salt Stress

Exogenous Methyl Jasmonate Acclimate Morpho-Physiological, Ionic and Gas Exchange Attributes of Wheat Genotypes (<i>Triticum aestivum</i> L.) under Salt Stress

Crosstalk between Melatonin and Reactive Oxygen Species in Plant Abiotic Stress Responses: An Update

Evidence that miR168a contributes to salinity tolerance of Brassica rapa L. via mediating melatonin biosynthesis

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