Interplay between gasotransmitters and potassium is a K+ey factor during plant response to abiotic stress

Lana, Luísa Gouveia; Araújo, Lara Matos de; Silva, Thamara Ferreira; Modolo, Luzia V.

doi:10.1016/j.plaphy.2021.11.023

Cited by 10 publications

(4 citation statements)

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“…It was reported that in plants K + deficiency may act as a stress signal, since K + fluxes in the plants affect the normal functioning of many metabolic processes as well as ROS homeostasis [ 3 , 62 , 63 ], and may hence induce many adaptive responses to withstand the lack of K + in the medium. K + must trigger cellular signaling alone or in association with other signaling molecules and phytohormones [ 3 , 5 ]. In our case, the estimation of the cellular K + concentration, a crucial parameter for the evaluation of K + status inside the plant cell, demonstrated a significant decrease upon K + deprivation in both leaves and roots.…”

Section: Discussionmentioning

confidence: 99%

“…In a soil solution K + concentration is about 0.01 to 20 mM [ 1 ], whereas this nutrient needs to be maintained within a range of 100–200 mM in the plant cell cytosol [ 2 ]. Multiple functions are ascribed to this macronutrient and have been recently reviewed [ 3 , 4 , 5 ]. K + availability for plants depends on the complex dynamics of the soil which are strongly influenced by root–soil interactions [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

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Potassium (K+) Starvation-Induced Oxidative Stress Triggers a General Boost of Antioxidant and NADPH-Generating Systems in the Halophyte Cakile maritima

et al. 2022

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Potassium (K+) is an essential macro-element for plant growth and development given its implication in major processes such as photosynthesis, osmoregulation, protein synthesis, and enzyme function. Using 30-day-old Cakile maritima plants as halophyte model grown under K+ deprivation for 15 days, it was analyzed at the biochemical level to determine the metabolism of reactive oxygen species (ROS), key photorespiratory enzymes, and the main NADPH-generating systems. K+ starvation-induced oxidative stress was noticed by high malondialdehyde (MDA) content associated with an increase of superoxide radical (O2•−) in leaves from K+-deficient plants. K+ shortage led to an overall increase in the activity of hydroxypyruvate reductase (HPR) and glycolate oxidase (GOX), as well as of antioxidant enzymes catalase (CAT), those of the ascorbate-glutathione cycle, peroxidase (POX), and superoxide dismutase (SOD), and the main enzymes involved in the NADPH generation in both leaves and roots. Especially remarkable was the induction of up to seven CuZn-SOD isozymes in leaves due to K+ deficiency. As a whole, data show that the K+ starvation has associated oxidative stress that boosts a biochemical response leading to a general increase of the antioxidant and NADPH-generating systems that allow the survival of the halophyte Cakile maritima.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Potassium (K+) Starvation-Induced Oxidative Stress Triggers a General Boost of Antioxidant and NADPH-Generating Systems in the Halophyte Cakile maritima

et al. 2022

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“…Interestingly, for synthetic biology purposes, FpsC is regio‐selective for the ortho‐3′,4′‐dihydroxy moiety of catechol‐containing structures, such as luteolin and quercetin, to produce phosphate conjugates at C‐4′ or C‐3′ of B‐ring (Hsu et al, 2023 ). Another enzyme metabolizing quercetin, the dioxygenase QdoI(YxaG), cleaves two carbon–carbon bonds, generating carbon monoxide (Bowater et al, 2004 ), a plant gasotransmitter involved in potassium‐related stress signalling (Lana et al, 2021 ).…”

Section: Developments In the Metabolism Of Bacillus Subtilismentioning

confidence: 99%

A model industrial workhorse: Bacillus subtilis strain 168 and its genome after a quarter of a century

Bremer

Calteau

Danchin

et al. 2023

Microbial Biotechnology

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The vast majority of genomic sequences are automatically annotated using various software programs. The accuracy of these annotations depends heavily on the very few manual annotation efforts that combine verified experimental data with genomic sequences from model organisms. Here, we summarize the updated functional annotation of Bacillus subtilis strain 168, a quarter century after its genome sequence was first made public. Since the last such effort 5 years ago, 1168 genetic functions have been updated, allowing the construction of a new metabolic model of this organism of environmental and industrial interest. The emphasis in this review is on new metabolic insights, the role of metals in metabolism and macromolecule biosynthesis, functions involved in biofilm formation, features controlling cell growth, and finally, protein agents that allow class discrimination, thus allowing maintenance management, and accuracy of all cell processes. New 'genomic objects' and an extensive updated literature review have been included for the sequence, now available at the International Nucleotide Sequence Database Collaboration (INSDC: AccNum AL009126.4).

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“…The demand for the different environmental abiotic factors is determined by the genotype's reaction to these surrounding abiotic elements and these abiotic elements as a collective [33][34][35]. The internal seed's response to overlapping external abiotic variables defines the success of the propagation [36].…”

Section: Introductionmentioning

confidence: 99%

Effect of Abiotic Stresses from Drought, Temperature, and Density on Germination and Seedling Growth of Barley (Hordeum vulgare L.)

Tarnawa

Kende

Sghaier

et al. 2023

Plants

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Seed germination and seedling growth are highly sensitive to deficit moisture and temperature stress. This study was designed to investigate barley (Hordeum vulgare L.) seeds’ germination and seedling growth under conditions of abiotic stresses. Constant temperature levels of 5, 10, 15, 20, 25, 30, and 35 °C were used for the germination test. Drought and waterlogging stresses using 30 different water levels were examined using two methods: either based at 1 milliliter intervals or, on the other hand, as percentages of thousand kernel weight (TKW). Seedling density in a petri dish and antifungal application techniques were also investigated. Temperature significantly impacted germination time and seedling development with an ideal range of 15–20 °C, with a more comprehensive range to 10 °C. Higher temperatures reversely affected germination percentage, and the lower ones affected the germination and seedling growth rate. Germination commenced at 130% water of the TKW, and the ideal water range for seedling development was greater and more extensive than the range for germination, which means there is a difference between the starting point for germination and the seedling development. Seed size define germination water requirements and provides an objective and more precise basis suggesting an optimal range supply of 720% and 1080% of TKW for barley seedling development. A total of 10 seeds per 9 cm petri dish may be preferable over greater densities. The techniques of priming seeds with an antifungal solution (Bordóilé or Hypo) or antifungal application at even 5 ppm in the media significantly prevented fungal growth. This study is novel regarding the levels and types of abiotic stresses, the crop, the experimental and measurement techniques, and in comparison to the previous studies.

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Interplay between gasotransmitters and potassium is a K+ey factor during plant response to abiotic stress

Cited by 10 publications

References 145 publications

Potassium (K+) Starvation-Induced Oxidative Stress Triggers a General Boost of Antioxidant and NADPH-Generating Systems in the Halophyte Cakile maritima

Potassium (K+) Starvation-Induced Oxidative Stress Triggers a General Boost of Antioxidant and NADPH-Generating Systems in the Halophyte Cakile maritima

A model industrial workhorse: Bacillus subtilis strain 168 and its genome after a quarter of a century

Effect of Abiotic Stresses from Drought, Temperature, and Density on Germination and Seedling Growth of Barley (Hordeum vulgare L.)

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