NADK2 positively modulates abscisic acid-induced stomatal closure by affecting accumulation of H 2 O 2 , Ca 2+ and nitric oxide in Arabidopsis guard cells

Sun, Lina; Li, Yaping; Miao, Wenwen; Piao, Tingting; Yang, Hao; Hao, Fushun

doi:10.1016/j.plantsci.2017.06.003

Cited by 43 publications

(23 citation statements)

References 32 publications

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“…This hypothesis is corroborated by the increase observed in g wmax in the abaxial face of the leaves. Therefore, it is interesting to note that although NO is usually associated only with the control of stomatal opening and closure (Joudoi et al 2013, Sun et al 2017, the results of this study suggest that NO may also be involved with the development and formation of guard cells in BR16 on stress conditions and thus may influence the distribution of stomata in the leaf. These results are in accordance with recent studies that indicated that NO promotes the formation of guard mother cells and the consequent stomatal development by activating the expression of specific genes in NO-treated wild-type Arabidopsis plants (Fu et al 2016).…”

Section: No Is Able To Induce Alterations In Stomatal Morpho-anatomicmentioning

confidence: 78%

Improving water use efficiency by changing hydraulic and stomatal characteristics in soybean exposed to drought: the involvement of nitric oxide

Sousa

Menezes‐Silva

Lourenço

et al. 2019

Physiologia Plantarum

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A variety of cellular responses is needed to ensure the plants survival during drought, but little is known about the signaling mechanisms involved in this process. Soybean cultivars (EMBRAPA 48 and BR 16, tolerant and sensitive to drought, respectively) were exposed to the following treatments: control conditions (plants in field capacity), drought (20% of available water in the soil), sodium nitroprusside (SNP) treatment (plants irrigated and treated with 100‐µM SNP [SNP–nitric oxide (NO) donor molecule], and Drought + SNP (plants subjected to drought and SNP treatment). Plants remained in these conditions until the reproductive stage and were evaluated for physiological (photosynthetic pigments, chlorophyll a fluorescence and gas exchange rates), hydraulic (water potential, osmotic potential and leaf hydraulic conductivity) and morpho‐anatomical traits (biomass, venation density and stomatal characterization). Exposure to water deficit considerably reduced water potential in both cultivars and resulted in decrease in photosynthesis and biomass accumulation. The addition of the NO donor attenuated these damaging effects of water deficit and increased the tolerance index of both cultivars. The results showed that NO was able to reduce plant's water loss, while maintaining their biomass production through alteration in stomatal characteristics, hydraulic conductivity and the biomass distribution pattern. These hydraulic and morpho‐anatomical alterations allowed the plants to obtain, transport and lose less water to the atmosphere, even in water deficit conditions.

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Section: No Is Able To Induce Alterations In Stomatal Morpho-anatomicmentioning

confidence: 78%

Improving water use efficiency by changing hydraulic and stomatal characteristics in soybean exposed to drought: the involvement of nitric oxide

Sousa

Menezes‐Silva

Lourenço

et al. 2019

Physiologia Plantarum

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“…Furthermore, NAD kinase-2 (NADK2) mutation impaired ABA-induced stomatal closure and ABA inhibition of light-promoted stomatal opening. NADK2 disruption also impaired the ABA-stimulated accumulation of H 2 O 2 [167,168]. Elevation of SOD activity due to Se supplementation evolved in the quick transformation of the superoxide radicals into H 2 O 2 , which was produced at the chloroplast and mitochondrial electron transport chain.…”

Section: Se-mediated Improvement In the Upregulation Of Enzymatic Andmentioning

confidence: 99%

An Overview of Hazardous Impacts of Soil Salinity in Crops, Tolerance Mechanisms, and Amelioration through Selenium Supplementation

Kamran

Parveen

Ahmar

et al. 2019

IJMS

369

200

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Soil salinization is one of the major environmental stressors hampering the growth and yield of crops all over the world. A wide spectrum of physiological and biochemical alterations of plants are induced by salinity, which causes lowered water potential in the soil solution, ionic disequilibrium, specific ion effects, and a higher accumulation of reactive oxygen species (ROS). For many years, numerous investigations have been made into salinity stresses and attempts to minimize the losses of plant productivity, including the effects of phytohormones, osmoprotectants, antioxidants, polyamines, and trace elements. One of the protectants, selenium (Se), has been found to be effective in improving growth and inducing tolerance against excessive soil salinity. However, the in-depth mechanisms of Se-induced salinity tolerance are still unclear. This review refines the knowledge involved in Se-mediated improvements of plant growth when subjected to salinity and suggests future perspectives as well as several research limitations in this field.

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“…It might also be that mechanical forces during adhesion of the appressorium over the stoma elicit H 2 O 2 generation in guard cells. In Arabidopsis, it was reported that H 2 O 2 accumulation in guard cells is involved in the signal transduction during ABA-mediated stomatal closing (Sun et al 2017). This could explain that accumulation of H 2 O 2 in guard cells following recognition of leaf rust structures might be involved in stomatal closure, this being supported by the fact that we observed more accumulation of ABA in plants infected with leaf rust (data no shown), It had been reported that appressoria formation of P. triticina also caused stomata closure in wheat leaves (Bolton et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Histopathological aspects of induced resistance byPseudomonas protegensCHA0 and β-aminobutyric acid in wheat againstPuccinia triticina

Bellameche

Jasim

Mauch‐Mani

et al. 2020

Preprint

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8After perception of specific biotic or abiotic stimuli, such as root colonization by rhizobacteria or 9 selected chemicals, plants are able to enhance their basal resistance against pathogens. Due to its 10 sustainability, such induced resistance is highly valuable for disease management in agriculture. Here 11 we study an example of resistance against wheat-leaf rust induced by Pseudomonas protegens CHA0 12 (CHA0) and β-aminobutyric acid (BABA), respectively. Seed dressing with CHA0 reduced the 13 number of sporulating pustules on the leaves and the expression of resistance was visible as necrotic 14 or chlorotic flecks. Moreover, a beneficial effect of CHA0 on growth was observed in wheat 15 seedlings challenged or not with leaf rust. BABA was tested at 10, 15 and 20 mM and a dose-16 dependent reduction of leaf rust infection was observed with the highest level of protection at 20 mM. 17However, BABA treatment repressed plant growth at 20 mM. Balancing between BABA-impact on 18 plant growth and its protective capacity, we selected 15 mM as suitable concentration to protect 19 wheat seedlings against leaf rust with the least impact on vegetative growth. To understand the 20 mechanisms behind the observed resistance, we have studied the histological aspects of the fungal 21 infection process. Our results showed that the p re-entry process was not affected by the two 22 resistance inducers. However, both treatments reduced fungal penetration and haustoria formation. 23The timing and the amplitude of the resistance reactions was different after bacterial or chemical 24 induction, leading to different levels of resistance to leaf rust. During fungal colonization of the 25 tissues, a high deposition of callose and the accumulation of H 2 O 2 in both CHA0-and BABA-treated 26 plants pointed to an important contribution to resistance. 27 Leaf rust, callose deposition, hydrogen peroxide (H 2 O 2 ), plant resistance inducers 29 INTRODUCTION 30 Plants dispose of several layers of sophisticated defense mechanisms to defend themselves against 31 pathogen attack. The first layer is given by preformed physical and chemical barriers that impede the 32 pathogen to penetrate into the plant and to initiate infection (Ferreira et al. 2006). Once the presence 33 of the pathogen has been detected, the plant activates further chemical and physical barriers that 34 block or at least delay the attack (second layer; Jones and Dangl (2006)). Defense success depends 35 on the readiness of the plant to detect the pathogen. In the case of the interaction between wheat and 36 the leaf rust pathogen (Puccinia triticina), the plant can detect specific fungal avirulence factors 37 (elicitors) with leaf rust resistance genes (Lr). This gene-by-gene interaction is a very rapid 38 recognition-reaction event leading to an elevated degree of resistance against the disease. However, 39 the avirulence patterns can change and the pathogen may become undetectable by the plant. This 40 2 resistance breakdown happened recently with yellow rust (Hovmøller ...

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NADK2 positively modulates abscisic acid-induced stomatal closure by affecting accumulation of H 2 O 2 , Ca 2+ and nitric oxide in Arabidopsis guard cells

Cited by 43 publications

References 32 publications

Improving water use efficiency by changing hydraulic and stomatal characteristics in soybean exposed to drought: the involvement of nitric oxide

Improving water use efficiency by changing hydraulic and stomatal characteristics in soybean exposed to drought: the involvement of nitric oxide

An Overview of Hazardous Impacts of Soil Salinity in Crops, Tolerance Mechanisms, and Amelioration through Selenium Supplementation

Histopathological aspects of induced resistance byPseudomonas protegensCHA0 and β-aminobutyric acid in wheat againstPuccinia triticina

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